trimethoprim--sulfamethoxazole-drug-combination and Thrombocytopenia

Pulmonary toxoplasmosis (PT) is an infectious disease that can be fatal if reactivation occurs in the recipients of hematopoietic stem cell transplantation (HSCT) who were previously infected with Toxoplasma gondii. However, whether the toxoplasmosis reactivation is an actual risk factor for patients receiving immunosuppressive therapies without HSCT remains unclear. Therefore, reactivated PT is not typically considered as a differential diagnosis for pneumonia other than in patients with HSCT or human immunodeficiency virus (HIV).. A 77-year-old man presented with fever and nonproductive cough for several days. He was hospitalized due to atypical pneumonia that worsened immediately despite antibiotic therapy. Before 4 months, he was diagnosed with immune thrombocytopenia (ITP) and received corticosteroid therapy. Trimethoprim-sulfamethoxazole (ST) was administered to prevent pneumocystis pneumonia resulting from corticosteroid therapy.. The serological and culture test results were negative for all pathogens except T. gondii immunoglobulin G antibody. Polymerase chain reaction, which can detect T. gondii from frozen bronchoalveolar lavage fluid, showed positive results. Therefore, he was diagnosed with PT.. ST, clindamycin, and azithromycin were administered. Pyrimethamine and sulfadiazine could not be administered because his general condition significantly worsened at the time of polymerase chain reaction (PCR) examination.. The patient died of acute respiratory distress syndrome despite anti-T. gondii treatment. An autopsy revealed a severe organizing pneumonia and a small area of bronchopneumonia.. PT should be considered as a differential diagnosis in patients with pneumonia, particularly in seropositive patients who receive immunosuppressive therapies even for other than HSCT or HIV.

Topics: Adrenal Cortex Hormones; Aged; Humans; Male; Pneumonia, Pneumocystis; Purpura, Thrombocytopenic, Idiopathic; Symptom Flare Up; Thrombocytopenia; Toxoplasma; Toxoplasmosis; Trimethoprim, Sulfamethoxazole Drug Combination

Decrease of blood cells may be induced by either components of co-trimoxazole. Side effects of the trimethoprim component are much more frequent, particularly in risk groups. They are dose dependent, usually not severe, only rarely of clinical significance and easily treated or prevented by folate supplementation. In contrast, side effects of the sulfamethoxazole component seem to be extremely rare. They are similar to the hematological side effects of other sulfonamide drugs. They are idiosyncratic, nonpredictable and mostly mediated by the immune-system. They may be of life-threatening severity and no therapy is known except termination of exposure and supportive measures such as substitution of blood cells and antiinfectious therapy by non-related antibiotics.

Topics: Anemia; Anti-Infective Agents; Blood Cells; Drug Combinations; Humans; Leukopenia; Risk; Sulfamethoxazole; Thrombocytopenia; Trimethoprim; Trimethoprim, Sulfamethoxazole Drug Combination

Neutropenia is the most frequent side effect of cotrimoxazole in sub-Saharan Africa. We estimated the incidence of haematological disorders during the first 6 months of a zidovudine-containing highly active antiretroviral therapy (HAART) regimen in sub-Saharan African adults receiving cotrimoxazole.. Prospective cohort study in Abidjan, with blood cell count measurement at baseline (HAART initiation), month 1, month 3 and month 6.. A total of 498 adults [baseline: 80% currently on cotrimoxazole prophylaxis; median CD4 count 237/mm3 [interquartile range (IQR) 181;316]; median neutrophil count 1647/mm3 (IQR 1221;2256); median haemoglobin 113 g/l (IQR 102;122)] started zidovudine (AZT)/lamivudine/efavirenz. During follow-up, 118 patients had a grade 3-4 neutropenia [(56.3/100 person-years (PY)], 23 had a grade 3-4 anaemia (9.6/100 PY) and no cases of grade 3-4 thrombocytopenia. Of the 118 patients with grade 3-4 neutropenia, 86 (73%) had to stop cotrimoxazole because neutropenia persisted, and one (<1%) had to stop AZT because of persistent neutropenia after cotrimoxazole was stopped (neutropenia-related HAART modification: 0.4/100 PY). Of the 23 patients with grade 3-4 anaemia, 11 had to stop AZT (anaemia-related HAART modification: 4.4/100 PY). In patients who stopped cotrimoxazole but not AZT, the median gain in neutrophils at 1 month was +540/mm3 (IQR +150;+896).. At baseline, most patients had a normal neutrophil count and 80% of them were already receiving cotrimoxazole. An unexpectedly high rate of grade 3-4 neutropenia occurred shortly after introduction of AZT. Almost all of the persistent severe neutropenia disappeared after cotrimoxazole was stopped. This suggests an accentuated drug interaction between the two drugs in these sub-Saharan African individuals. Grade 3-4 anaemia was much less frequent, but remained the first cause of AZT discontinuation.

Topics: Adult; Anemia; Anti-HIV Agents; Anti-Infective Agents; Antiretroviral Therapy, Highly Active; Blood Cell Count; Blood Platelets; Cohort Studies; Cote d'Ivoire; Drug Therapy, Combination; Female; HIV Infections; Humans; Male; Neutropenia; Prospective Studies; Thrombocytopenia; Trimethoprim, Sulfamethoxazole Drug Combination; Zidovudine

Sudden conjunctivitis, lymphopenia, and rash combined with hemodynamic changes (SCoRCH) is a recently described hypersensitivity reaction to trimethoprim-sulfamethoxazole. To date, only 1 case of histologic findings in SCoRCH has been reported, revealing a superficial perivascular dermatitis. In this article, we present a 53-year-old woman with a four-day history of a widespread, confluent, erythematous, and dusky rash after exposure to trimethoprim-sulfamethoxazole. Histologic examination revealed a vacuolar interface dermatitis with several apoptotic keratinocytes at multiple levels of the epidermis, similar to an erythema multiforme-like presentation. As described in SCoRCH, our patient's clinical findings rapidly improved within 48 hours of presentation without treatment. This case adds to the current literature by identifying a newly described histopathological presentation of SCoRCH.

Topics: Conjunctivitis; Dermatitis; Exanthema; Female; Humans; Lymphopenia; Middle Aged; Thrombocytopenia; Trimethoprim, Sulfamethoxazole Drug Combination

Trimethoprim-sulfamethoxazole, otherwise known as Bactrim or Septra, is a commonly prescribed antibiotic for soft tissue infections. Drug-induced thrombocytopenia is a rare but serious adverse reaction to sulfonamide antibiotics like Bactrim/Septra. A 34-year-old active duty marine male with no significant past medical history presented with a chief complaint of a rash on his lower extremities. The patient stated that 2 weeks earlier, he was prescribed Bactrim for cellulitis at the site of a new tattoo. The intern noted a petechial rash that was pathognomonic for thrombocytopenia. Laboratory testing confirmed the patient's thrombocytopenia with platelets of 2,000/μL on initial complete blood count, without pancytopenia or other coagulopathies. The blood smear indicated a profound lack of platelets but otherwise normal cell counts and morphology. In the emergency department, the patient was typed and crossed, platelets were ordered, and hematology-oncology was consulted. Once admitted to the internal medicine ward, he was administered glucocorticoids as well as platelet transfusions. He was monitored for 3 days and discharged with a diagnosis of resolved drug-induced thrombocytopenia. This case illustrates the importance of conducting a thorough review of systems and physical examination in stable and otherwise healthy patients. In this case, the seemingly benign rash was one of the only clinical signs of severe thrombocytopenia, with a high risk of spontaneous bleeding in clinically significant organ systems. It is important to recognize immune thrombocytopenic purpura as a potential complication of Bactrim/Septra, as this antibiotic is widely used by military providers in operational settings.

Topics: Adult; Anti-Bacterial Agents; Exanthema; Humans; Male; Purpura, Thrombocytopenic, Idiopathic; Tattooing; Thrombocytopenia; Trimethoprim, Sulfamethoxazole Drug Combination

Objective Hemorrhagic pneumonia due to Stenotrophomonas maltophilia (SM) in severely immunocompromised patients has a very poor prognosis. However, the risk factors for hemorrhagic pneumonia are not clear. Methods This study assessed the predictive factors of hemorrhagic pneumonia caused by SM. The medical records of patients admitted to Osaka City University Hospital with SM bacteremia between January 2008 and December 2017 were retrospectively reviewed. Patients All patients who had positive blood cultures for SM were included in this study. They were categorized into two groups: the SM bacteremia with hemorrhagic pneumonia group and the SM bacteremia without hemorrhagic pneumonia group. The clinical background characteristics and treatments were compared between these groups. Results The 35 patients with SM bacteremia included 4 with hemorrhagic pneumonia and 31 without hemorrhagic pneumonia. Hematologic malignancy (p=0.03) and thrombocytopenia (p=0.04) as well as the prior use of quinolone within 30 days (p=0.04) were more frequent in the SM bacteremia patients with hemorrhagic pneumonia than in those without hemorrhagic pneumonia. The mortality of the SM bacteremia patients with hemorrhagic pneumonia was higher than that of those without hemorrhagic pneumonia group (p=0.02). Conclusion Patients with SM bacteremia who have hematologic malignancy, thrombocytopenia, and a history of using quinolone within the past 30 days should be treated with deliberation.

Topics: Adult; Female; Gram-Negative Bacterial Infections; Hematologic Neoplasms; Hemoptysis; Hemorrhage; Humans; Immunocompromised Host; Male; Middle Aged; Pneumonia, Bacterial; Prognosis; Quinolones; Retrospective Studies; Risk Factors; Stenotrophomonas maltophilia; Thrombocytopenia; Trimethoprim, Sulfamethoxazole Drug Combination

Drug-induced immune hemolytic anemia (DIIHA) and drug-induced immune thrombocytopenia (DIIT) are rare but dangerous complications of pharmacotherapy that may be underrecognized in hematopoietic stem cell transplant (HSCT) patients due to overlap of signs and symptoms with those of more common disease processes.. A 61-year-old woman with NK-cell deficiency and GATA-2-associated myelodysplastic syndrome, status post-recent allogeneic HSCT (Day +58), presented with 3 days of acute-onset severe back pain, muscle cramps, and increasingly dark urine. She was found to be anemic, thrombocytopenic, and in acute renal failure. On admission, the direct antiglobulin test was positive for complement (C3) only. After careful review of her medication list, the possibility of DIIHA was raised. She had started taking trimethoprim-sulfamethoxazole (TMP-SMX) for Pneumocystis jiroveci pneumonia prophylaxis 24 days prior on a weekend dose schedule. Serologic tests on peripheral blood samples were performed using standard methods. Drug studies were performed at an immunohematology reference laboratory.. The patient's serum showed hemolysis of donor red blood cells in the presence of TMP-SMX and also TMP-SMX-induced platelet antibodies. The patient was treated with transfusions, hemodialysis, and immunosuppressive agents. Her clinical condition improved and she was discharged after 8 days in stable condition.. This case describes the first reported concurrent DIIHA and DIIT due to TMP-SMX-induced antibodies in an HSCT patient. DIIHA and DIIT can present a diagnostic challenge in the setting of intermittent medication dosing.

Topics: Anemia, Hemolytic; Blood Transfusion; Female; Humans; Immunosuppressive Agents; Middle Aged; Renal Dialysis; Thrombocytopenia; Transfusion Reaction; Treatment Outcome; Trimethoprim, Sulfamethoxazole Drug Combination

Patients with HIV are at risk of both primary and secondary haematological disorders. We report two cases of patients with HIV and cryptococcal meningitis who developed severe haemolytic anaemia, thrombocytopenia, renal failure and lactic acidosis while on treatment with amphotericin B and co-trimoxazole.

Topics: Acidosis, Lactic; Adult; AIDS-Related Opportunistic Infections; Amphotericin B; Anemia, Hemolytic; Antifungal Agents; Cryptococcus neoformans; Drug Therapy, Combination; Female; Humans; Male; Meningitis, Cryptococcal; Renal Insufficiency; Thrombocytopenia; Treatment Outcome; Trimethoprim, Sulfamethoxazole Drug Combination

Topics: Adolescent; Anti-Infective Agents; Child; Drug-Related Side Effects and Adverse Reactions; Female; Flow Cytometry; Humans; Infant; Male; Prognosis; Thrombocytopenia; Trimethoprim, Sulfamethoxazole Drug Combination

Drug-induced immune thrombocytopenia (DITP) is a rare clinical disorder characterized by accelerated platelet (PLT) clearance in the presence of drug-dependent antibodies. Distinguishing DITP from other immune-mediated disorders such as posttransfusion purpura (PTP) and autoimmune thrombocytopenia can represent a clinical challenge.. A 68-year-old male with no prior transfusion history presented to the emergency department (ED) with dyspnea, epistaxis, and severe thrombocytopenia (<10 × 10(9)/L) 12 days after discharge from a hospital admission for a coronary artery bypass graft. Evaluation of the degree of thrombocytopenia and the temporal association between the peri- and postoperative receipt of multiple transfusions and the acute decrease in PLT count indicated PTP as a possible cause of the severe thrombocytopenia. Treatment with 1 g/kg intravenous immunoglobulin (IVIG) was initiated and followed by a rapid 48-hour increase in the PLT count. PLT antibodies lacking serologic specificity were subsequently identified in a sample collected upon presentation. Two weeks later he again presented to the ED with epistaxis and severe thrombocytopenia (<10 × 10(9)/L). Clinical history now revealed that the patient had been treated with trimethoprim-sulfamethoxazole by his primary care physician after his first hospitalization for a "cellulitic-appearing" leg and again before his final presentation for surgical site erythema and edema. IVIG was administered again with a rapid return of PLT count to baseline. Sulfamethoxazole-dependent PLT antibodies were subsequently identified in the original patient sample.. This case report documents a case of IVIG-responsive DITP initially misdiagnosed as PTP, highlighting the clinical overlap of these immunologic-mediated phenomena.

Topics: Aged; Humans; Male; Platelet Transfusion; Purpura, Thrombocytopenic; Sulfamethoxazole; Thrombocytopenia; Transfusion Reaction; Trimethoprim, Sulfamethoxazole Drug Combination

Topics: Anti-Infective Agents; Humans; Thrombocytopenia; Trimethoprim, Sulfamethoxazole Drug Combination

This case report details the second described case of Whipple's disease-related thrombocytopenia in the medical literature. Whipple's disease is a rare multisystem infection caused by the actinomycete Tropheryma whipplei, first described by George Whipple in 1907. The key clinical manifestations are weight loss, diarrhoea and malabsorption, but arthralgia and endocarditis are also well described.. A 62-year-old Caucasian female presented with weight loss, anaemia and behavioural changes but denied any abdominal symptoms. Thrombocytopenia subsequently developed rapidly. Bone marrow examination showed abundant megakaryocytes in keeping with peripheral platelet sequestration. In addition, there was significant polyclonal plasmacytosis. She was also found to have a 1.6 cm tricuspid vegetation. The diagnosis was confirmed by presence of foamy macrophages on duodenal biopsy, positive periodic acid-Schiff staining and visualisation of T whipplei actinomycetes on electron microscopy. Tissue PCR performed mid-treatment showed traces of T whipplei DNA. The infection was treated with a 2-week intravenous course of ceftriaxone followed by 12 months of oral co-trimoxazole. The thrombocytopenia and anaemia resolved rapidly with antibiotic therapy, her behaviour returned to normal and she remains clinically well.. This report confirms the association of thrombocytopenia with Whipple's disease, likely due to peripheral platelet sequestration, which resolves rapidly with treatment. In patients with a long history of unintended weight loss, Whipple's disease is a rare but important differential diagnosis as it is ultimately fatal if left untreated.

Topics: Anti-Bacterial Agents; Ceftriaxone; Endocarditis, Bacterial; Female; Humans; Middle Aged; Predictive Value of Tests; Risk Factors; Thrombocytopenia; Time Factors; Treatment Outcome; Trimethoprim, Sulfamethoxazole Drug Combination; Tropheryma; Whipple Disease

Drug-induced immune thrombocytopenia (DITP) can be caused by numerous drugs. When this condition develops, platelet destruction results from binding of antibodies to normal platelets only in the presence of a sensitizing drug. A recently proposed model suggests that these drug-dependent antibodies are derived from a pool of naturally occurring antibodies with weak affinity for specific epitopes on certain platelet membrane glycoproteins. We describe here a case of DITP secondary to cotrimoxazole exposure in the immediate posttransplantation phase in a renal transplant recipient. Apart from heparin-induced thrombocytopenia, DITP posttransplantation has to the best of our knowledge never been described, perhaps because of its immune-mediated origin. Our case demonstrates that DITP can occur posttransplantation, that cotrimoxazole due to its intensive use in the transplanted population is one of the most likely causative agents and that a timely recognition and treatment might have important consequences for both graft and patient.

Topics: Adult; Humans; Kidney Neoplasms; Male; Thrombocytopenia; Trimethoprim, Sulfamethoxazole Drug Combination

Two patients, a girl and a boy, both aged 8.5 years, presented with serious side effects caused by ceftriaxone and co-trimoxazole, respectively. The first patientwas treated with ceftriaxone (100 mg/kg/day with a body weight of 35.6 kg) on suspicion of a neuroborreliosis, but developed an acute cholecystitis with cholelithiasis 3 weeks after the antibiotic had been withdrawn. He underwent a laparoscopic cholecystectomy. Ceftriaxone binds calcium in the biliary tract, forming biliary sludge or stones. The second patient developed thrombocytopenia during treatment with co-trimoxazole (58 mg/kg/day with a body weight of 25.4 kg) because of a urinary-tract infection. After discontinuation of the co-trimoxazole the thrombocytopenia resolved spontaneously. The pathophysiological mechanism involved may be either a direct toxic effect of trimethoprim or an immune-mediated reaction to sulfamethoxazole. According to current guidelines, the dosage of the drug was too high in both cases. It is important to ensure a correct dosage in children, since side effects are potentially dose-related.

Topics: Anti-Bacterial Agents; Body Weight; Ceftriaxone; Child; Cholelithiasis; Dose-Response Relationship, Drug; Female; Humans; Male; Thrombocytopenia; Trimethoprim, Sulfamethoxazole Drug Combination; Urinary Tract Infections

Haematological anomalies are frequent during HIV infection, and can be the fact of virus and or bone marrow toxicity of antiretroviral drugs. In order to analyze the evolution of the haematological parameters during HAART this work was carried out in the internal medicine department of the national teaching hospital Yalgado-Ouédraogo in Ouagadougou. So 107 patients receiving for the first time HAART and followed regularly were retained. The immunological efficacy at the end of the first six months was 60, 75% with an average gain of 119 CD4/mm3. The haematological changes at the end of these first six months showed: --an anaemia in 51.4% of the cases at month 6 versus 80.3% at baseline (p=0.0001). The average rate of haemoglobin was 11.8 versus 11.2 g/dl at baseline in the AZT containing HAART regimen (p=0.014) and 12.2 versus 10.7 g/dl at baseline in the group without AZT (p=0.00006). --a neutropenia in 35.5% of the cases at month 6 versus 31.7% at baseline (p=0.6). The average rate of neutrophil was 1908/mm3 versus 2267.1/mm3 at baseline in the AZT containing HAART regimen and 2150.7/mm3 versus 2001.9/mm3 at baseline in the group without AZT These results show that the therapeutic efficacy measured on the immunological answer is accompanied by a reduction of haematological anomalies. They also suggest the necessity to evaluate the cotrimoxazole impact before deciding the interruption of AZT.

Topics: Adolescent; Adult; Anemia; Anti-Infective Agents; Antiretroviral Therapy, Highly Active; Burkina Faso; Female; Follow-Up Studies; Hematologic Diseases; Hemoglobins; HIV Infections; Humans; Lymphopenia; Male; Middle Aged; Neutropenia; Retrospective Studies; Thrombocytopenia; Trimethoprim, Sulfamethoxazole Drug Combination; Zidovudine

Trimethoprim-sulfamethoxazole (TMP-SMX) is a combination chemotherapeutic agent, a commonly used antibiotic. Adverse drug reactions occur in 6-8% of patients. Although, the most common adverse reactions include mild gastrointestinal distress and cutaneous events, also a wide range of hematological abnormalities have been ascribed to TMP-SMX. We report a 40-year-old male patient who developed an early onset neutropenia, thrombocytopenia, generalised rash and oral candidiasis after 5 days long TMP-SMX therapy. Although generalised rash may seen more and improves with discontinuation of the therapy; severe neutropenia, thrombocytopenia and oral candidiasis are seen very rare and rarely leads to fatality as it was in our case. Despite thrombocyte transfusions, whole blood transfusions, red cell concentrates and filgrastim therapy we lost our patient. We want to underline that although the TMP-SMX combination is usually well tolerated it can also lead to fatal complications.

Topics: Adult; Anti-Infective Agents; Anti-Inflammatory Agents; Candidiasis, Oral; Cefepime; Cephalosporins; Chlorhexidine; Drug Eruptions; Escherichia coli; Escherichia coli Infections; Exanthema; Fatal Outcome; Filgrastim; Granulocyte Colony-Stimulating Factor; Humans; Male; Meropenem; Neutropenia; Nystatin; Platelet Transfusion; Prednisolone; Recombinant Proteins; Thienamycins; Thrombocytopenia; Trimethoprim, Sulfamethoxazole Drug Combination

Antiphospholipid syndrome is an autoimmune disease that is characterised by tendency to thrombosis, obstetrical and hematological complications. Corticosteroids may be useful for therapy of some features of this syndrome, such as thrombocytopenia. Nocardia is an important opportunistic infectious agent in immunocompromised hosts, i.e. in patients taking corticosteroids. It is important to be aware of these rare complications, which are correlated with the prognosis. In this paper, we report a patient with primary anti-phospholipid syndrome treated by corticosteroid, who developed disseminated nocardiosis.

Topics: Adult; Anti-Infective Agents; Anti-Inflammatory Agents; Antiphospholipid Syndrome; Antirheumatic Agents; Ceftriaxone; Chloroquine; Female; Humans; Immunocompromised Host; Methylprednisolone; Nocardia Infections; Thrombocytopenia; Trimethoprim, Sulfamethoxazole Drug Combination

Drug-induced immune thrombocytopenia, excluding heparin-induced thrombocytopenia, is a rare adverse drug reaction for which the evidence about frequency, relative risk and risk factors mainly originates from case reports and case studies. This study aims to quantify the risk for thrombocytopenia following exposure to drugs that are most often reported to cause thrombocytopenia in the general population.. A retrospective, case-control study was conducted within the PHARMO record linkage system. Cases were defined as patients hospitalised for thrombocytopenia in the period 1 January 1990 to 31 December 2002. For each case, up to four controls were matched based on age, sex and geographical area. Exposure on the index date to anticonvulsants, beta-lactam antibacterials, cinchona alkaloids, disease modifying antirheumatic drugs (DMARDs), diuretics, NSAIDs, sulfonamide antibacterials and tuberculostatics was assessed and categorised into mutually exclusive groups of current, recent, past and non-use. The risk was quantified with multivariate conditional logistic regression analysis.. The study population comprised 705 cases and 2658 controls. Current use of beta-lactam antibacterials was associated with an increased risk for thrombocytopenia (adjusted odds ratio 7.4, 95% CI 1.8, 29.6). Increased risk estimates, although not significant, were found for current exposure to DMARDs and the sulfonamide antibacterial cotrimoxazole (trimethoprim/sulfamethoxazole). No increased risk was found for anticonvulsants, cinchona alkaloids, diuretics, NSAIDs or tuberculostatics.. More evidence for an increased risk for thrombocytopenia in current use of beta-lactam antibacterials in the general population was provided. The expected increase in risk could not be confirmed for the other drugs investigated, which is possibly a result of the limited statistical power. Future studies including more patients and with laboratory data should confirm our findings before drawing definite conclusions.

Topics: Anti-Infective Agents; Antirheumatic Agents; beta-Lactams; Case-Control Studies; Drug-Related Side Effects and Adverse Reactions; Female; Humans; Male; Medical Records Systems, Computerized; Middle Aged; Netherlands; Odds Ratio; Retrospective Studies; Risk Factors; Thrombocytopenia; Trimethoprim, Sulfamethoxazole Drug Combination

Trimethoprim-sulfamethoxazole is a commonly used medication. Side effects are numerous and include drug hypersensitivity syndrome. The case of a 24-year-old woman with severe liver failure is presented. Erythema multiforme and thrombocytopenia developed after the acute onset of hepatotoxicity and after all medications had been stopped. Clinical resolution of all features occurred over weeks but laboratory abnormalities persisted up to eight months later. A causal link with sulfamethoxazole was supported by timing, liver biopsy and lymphocyte toxicity test. This case illustrates one presentation and the possible severity of the drug hypersensitivity syndrome associated with trimethoprim-sulfamethoxazole.

Topics: Adult; Anti-Infective Agents; Diagnosis, Differential; Drug Hypersensitivity; Erythema Multiforme; Hepatitis A; Humans; Liver Failure; Male; Syndrome; Thrombocytopenia; Trimethoprim, Sulfamethoxazole Drug Combination

To report a case of possible severe, life-threatening thrombocytopenia associated with trimethoprim/sulfamethoxazole (TMP/SMX) therapy.. A 54-year-old white woman received a 10-day course of TMP/SMX for treatment of chronic sinusitis. One day after finishing the course of TMP/SMX therapy, the presented to the emergency department because of the development of scattered petechiae on both hands and blood blisters in her mouth. On admission, her complete blood cell count results revealed a severely low platelet count of 2 x 10(3)/mm3. Other laboratory test results were normal, except for elevated blood glucose (nonfasting blood glucose). TMP/SMX was believed to be the most likely cause of thrombocytopenia. She was treated successfully with a transfusion of 2 units of platelets and oral prednisone. Her platelet count increased to 110 x 10(3)/mm3 4 days after discontinuation of TMP/SMX. She was discharged on hospital day 5. On follow-up (2 wk after hospital discharge), her platelet count was normal (351 x 10(3)/mm3).. TMP/SMX has been implicated as a cause of thrombocytopenia, which is defined as platelet count < 150 x 10(3)/mm3. Although it is uncommon, spontaneous severe bleeding may occur when platelet count decreases to < or = 10 x 10(3)/mm3. Thrombocytopenia associated with TMP/SMX appears to be an immune-mediated process resulting in platelet destruction by drug-dependent platelet antibodies. Treatment of thrombocytopenia associated with TMP/SMX therapy includes discontinuation of the offending drug and the use of corticosteroids. Platelet transfusion and intravenous immunoglobulin may be required in some patients.. Thrombocytopenia associated with TMP/SMX therapy can be serious or life threatening because it may result in significant bleeding complications. This hematologic adverse effect of TMP/SMX may occur even with the usual recommended dosage and duration of therapy. Careful monitoring of complete blood cell count, including platelet count, before and during TMP/SMX therapy is suggested.

Topics: Anti-Infective Agents; Blood Cell Count; Chronic Disease; Female; Humans; Middle Aged; Platelet Count; Sinusitis; Thrombocytopenia; Trimethoprim, Sulfamethoxazole Drug Combination

Topics: Anti-Infective Agents; Bipolar Disorder; Chronic Disease; Clozapine; Drug Synergism; Female; Humans; Middle Aged; Neutropenia; Panic Disorder; Selective Serotonin Reuptake Inhibitors; Thrombocytopenia; Trimethoprim, Sulfamethoxazole Drug Combination

The objective of this study was to quantify the risk of serious blood and skin disorders associated with co-trimoxazole.. We conducted a population-based cohort study of serious blood and skin disorders requiring hospitalization among otherwise healthy users of co-trimoxazole at Group Health Cooperative and Puget Sound (GHC).. During the years 1987 to 1993 we found six cases of co-trimoxazole-associated blood disorders and three cases of co-trimoxazole-associated skin disorders yielding risks of 5.6/100,000 (95% CI 2.6-12.2) and 2.8/100,000 (95% CI 0.9-8.2) respectively. In all cases found there was prompt recovery after discontinuation of co-trimoxazole. We found no cases of toxic epidermal necrolysis.. We conclude that the risk of blood and skin disorders associated with the use of co-trimoxazole leading to hospitalization is low.

Topics: Adult; Aged; Anti-Infective Agents; Child, Preschool; Cohort Studies; Erythema Multiforme; Female; Hematologic Diseases; Hospitalization; Humans; Leukopenia; Longitudinal Studies; Male; Middle Aged; Neutropenia; Pancytopenia; Risk Assessment; Skin Diseases; Stevens-Johnson Syndrome; Thrombocytopenia; Trimethoprim, Sulfamethoxazole Drug Combination

To quantify the risk of serious blood and skin disorders requiring hospitalization among otherwise healthy users of co-trimoxazole.. We conducted a population-based cohort study at Group Health Cooperative of Puget Sound (GHC).. During the years 1987 to 1993 we found six cases of co-trimoxazole-associated blood disorders and three cases of co-trimoxazole-associated skin disorders yielding risks of 5.6/100,000 (95% CI 2.6-12.2) and 2.8/100,000 (95% CI 0.9-8.2) respectively. In all cases found there was prompt recovery after discontinuation of co-trimoxazole. We found no cases of toxic epidermal necrolysis.. We conclude that the risk of blood and skin disorders associated with the use of co-trimoxazole leading to hospitalization is low.

Topics: Adult; Aged; Anti-Infective Agents; Child, Preschool; Cohort Studies; Erythema Multiforme; Female; Hematologic Diseases; Hospitalization; Humans; Leukopenia; Longitudinal Studies; Male; Middle Aged; Neutropenia; Pancytopenia; Product Surveillance, Postmarketing; Risk Assessment; Skin Diseases; Stevens-Johnson Syndrome; Thrombocytopenia; Trimethoprim, Sulfamethoxazole Drug Combination

To analyse the distribution of noncytotoxic drugs reported as cause of thrombocytopenia during a 24-year period, and to draw attention to the most commonly involved drugs in modern clinical practice.. Retrospective study of spontaneous case reports from the Danish reporting system on adverse drug reactions.. A total of 309 critically reviewed cases of drug-induced thrombocytopenia reported during the period from 1968 to the end of 1991.. Sodiumaurothiomalate and the combination sulfamethoxazole with trimethoprim were the most commonly reported single drugs, and nonsteroid anti-inflammatory drugs were the most frequently reported category of drugs. A pronounced shift in the spectrum of causal drugs was observed due to the introduction of new drugs and alterations in drug consumption. At present, valproic acid and measlesmumps-rubella vaccine are most numerously reported. The still-growing list of thrombocytopenia-inducing agents contained 110 different drugs. At present, 20% of reported cases concern drugs not previously registered as causing thrombocytopenia in Denmark. Twenty-five per cent of all cases were caused by drugs which appeared only sporadically in the material.. The spectrum of drugs reported as causing drug-induced thrombocytopenia is broadening and changing progressively, reflecting changes in drug consumption. The most frequently reported drugs at present are valproic acid and measlesmumps-rubella vaccine.

Topics: Adolescent; Adult; Adverse Drug Reaction Reporting Systems; Age Distribution; Aged; Aged, 80 and over; Anti-Infective Agents; Anti-Inflammatory Agents, Non-Steroidal; Antirheumatic Agents; Child; Child, Preschool; Denmark; Female; Gold Sodium Thiomalate; Humans; Incidence; Infant; Male; Middle Aged; Retrospective Studies; Sex Distribution; Thrombocytopenia; Trimethoprim, Sulfamethoxazole Drug Combination; Valproic Acid; Viral Vaccines

Topics: Adult; Aerospace Medicine; Anti-Infective Agents, Urinary; Female; Humans; Military Personnel; Thrombocytopenia; Trimethoprim, Sulfamethoxazole Drug Combination; United States; Urinary Tract Infections

Topics: Drug Eruptions; Female; Fever; Humans; Leukopenia; Liver Function Tests; Middle Aged; Pruritus; Thrombocytopenia; Trimethoprim, Sulfamethoxazole Drug Combination

Topics: Adult; Blood Component Transfusion; Female; Humans; Immunoglobulins, Intravenous; Thrombocytopenia; Trimethoprim, Sulfamethoxazole Drug Combination; Urinary Tract Infections

During the 10-year period 1976-1985, a total of 154 cases of blood dyscrasia were reported in Sweden which were evaluated as having a probable or possible causal relationship with trimethoprim-sulphamethoxazole (T-SM). There were 61 cases of leucopenia (of which 16 had agranulocytosis), 28 cases of thrombocytopenia, and two of non-haemolytic anaemia. There were also 32 cases of bicytopenia and 31 cases of tricytopenia. The median age varied from 38 years in the leucopenia group to 81 years in those with tricytopenia. The overall fatality rate was 17%, ranging from 2% in the group with mild leucopenia to 52% in the group with tricytopenia. In relation to sales and prescription data, the overall incidence of reported T-SM blood dyscrasias was 5.3 per million defined daily doses, and among out-patients the incidence was one case per 18,000 prescriptions. Thus the overall incidence of any blood reaction to T-SM appears to be low. In relation to prescription data, elderly people were overrepresented among the serious reactions.

Topics: Adult; Aged; Aged, 80 and over; Agranulocytosis; Female; Hematologic Diseases; Humans; Incidence; Leukopenia; Male; Middle Aged; Registries; Sweden; Thrombocytopenia; Trimethoprim, Sulfamethoxazole Drug Combination

A case of life-endangering post-operative haemorrhage due to thrombocytopenia resulting from administration of trimethoprim-sulphamethoxazole is described. Withdrawal of the drug led to complete recovery. This side effect should be kept in mind, especially in patients scheduled for surgical intervention. As thrombocytopenia may develop insidiously and gradually, it is highly recommended to perform full blood tests immediately prior to surgery and repeat them in the post-operative period.

Topics: Aged; Ameloblastoma; Humans; Male; Mandibular Neoplasms; Oral Hemorrhage; Postoperative Complications; Thrombocytopenia; Trimethoprim, Sulfamethoxazole Drug Combination

Cyclophosphamide has proved to be the most effective therapy for Wegener's granulomatosis, but mortality remains high at many medical centers, and the necessity for giving this toxic agent for many years to prevent relapses remains a major problem. Successful treatment of this disease with sulfamethoxazole-trimethoprim has been reported by DeRemee et al, and experience in a series of ten patients at Thomas Jefferson University Hospital, Philadelphia, confirms its effectiveness. Nine patients are in remission, and the condition of one patient improved. Relapses occurred in four patients after intervals of remission ranging from four to 30 months, but responded to increased doses of trimethoprim in two patients, while two patients required resumption of therapy with cytotoxic agents. Although the effects of sulfamethoxazole-trimethoprim are suppressive rather than curative, its use represents a major advance in treatment of Wegener's granulomatosis, permitting successful treatment of many patients without high toxic doses of cyclophosphamide and prednisone.

Topics: Adolescent; Adult; Aged; Chemical and Drug Induced Liver Injury; Drug Combinations; Female; Granulomatosis with Polyangiitis; Humans; Male; Middle Aged; Recurrence; Sulfamethoxazole; Thrombocytopenia; Trimethoprim; Trimethoprim, Sulfamethoxazole Drug Combination

12 AIDS/ARC patients with or suspected of Pneumocystis carinii pneumonia were treated with co-trimoxazole and received supplementary folic or folinic acid to avoid peripheral blood cytopenia. Most patients developed decreased numbers of neutrophils and hemoglobin while receiving co-trimoxazole. Supplementary folate/folinate could not abolish the drug-induced cytopenia. Routine prescription of folinic acid is not recommended. Folic acid is cheap and may be beneficial and should be prescribed.

Topics: Acquired Immunodeficiency Syndrome; AIDS-Related Complex; Anemia; Drug Combinations; Folic Acid; Hematologic Diseases; Humans; Leucovorin; Leukopenia; Pneumonia, Pneumocystis; Prospective Studies; Sulfamethoxazole; Thrombocytopenia; Time Factors; Trimethoprim; Trimethoprim, Sulfamethoxazole Drug Combination

Topics: Aged; Anti-Infective Agents, Urinary; Drug Combinations; Escherichia coli Infections; Female; Hematuria; Humans; Melena; Sulfamethoxazole; Thrombocytopenia; Trimethoprim; Trimethoprim, Sulfamethoxazole Drug Combination; Urinary Tract Infections

Topics: Agranulocytosis; Child; Drug Combinations; Humans; Leukemia, Lymphoid; Neutropenia; Pulmonary Fibrosis; Sulfamethoxazole; Thrombocytopenia; Trimethoprim; Trimethoprim, Sulfamethoxazole Drug Combination

Cotrimoxazole administration is occasionally associated with thrombocytopenia. Interference with folate metabolism has been postulated. The drug has also been postulated to induce an autoantibody by acting as a hapten, but proof has not been forthcoming. A case is reported in which the serum has been shown to contain an anti-platelet autoantibody requiring sulphamethoxazole or cotrimoxazole for activity.

Topics: Adult; Autoantibodies; Autoimmune Diseases; Blood Platelets; Drug Combinations; Female; Humans; Sulfamethoxazole; Thrombocytopenia; Trimethoprim; Trimethoprim, Sulfamethoxazole Drug Combination