trimethoprim--sulfamethoxazole-drug-combination and Acidosis--Lactic

Propylene glycol (PG) is used as a solvent in numerous medications, including trimethoprim/sulfamethoxazole (TMP/SMX) and lorazepam, and is metabolized in the liver to lactic acid. Cases of lactic acidosis related to PG toxicity have been described and always involved large doses of benzodiazepines and PG. We present the first case of severe lactic acidosis after a 3-day course of TMP/SMX alone, involving allegedly safe amounts of PG.A 31-year-old female with neurofibromatosis and pilocytic astrocytoma, receiving temozolomide and steroids, was admitted to the intensive care unit for pneumonia and acute respiratory failure requiring intubation. Her initial hemodynamic and acid-base statuses were normal. She was treated with intravenous TMP/SMX for possible Pneumocystis jirovecii pneumonia and was successfully extubated on day 2. On day 3, she developed tachypnea and arterial blood gas analysis revealed a severe metabolic acidosis (pH 7.2, PCO2 19 mm Hg, bicarbonates 8 mEq/L) with anion gap of 25 mEq/L and lactate of 12.1 mmol/L. TMP/SMX was discontinued and the lactate decreased to 2.9 mmol/L within 24 hours while her plasma bicarbonates normalized, without additional intervention. The patient never developed hypotension or severe hypoxia, and her renal and liver functions were normal. No other cause for lactic acidosis was identified and it resolved after TMP/SMX cessation alone, suggesting PG toxicity.Although PG-related lactic acidosis is well recognized after large doses of lorazepam, clinicians should bear in mind that TMP/SMX contains PG as well and should suspect PG toxicity in patients developing unexplained metabolic acidosis while receiving TMP/SMX.

Topics: Acidosis, Lactic; Adult; Anti-Bacterial Agents; Dose-Response Relationship, Drug; Drug Administration Schedule; Female; Humans; Pneumocystis carinii; Pneumonia, Pneumocystis; Propylene Glycol; Solvents; Trimethoprim, Sulfamethoxazole Drug Combination

Topics: Acidosis, Lactic; Aged; Dermatomyositis; Female; Humans; Pneumonia, Pneumocystis; Propylene Glycol; Tomography, X-Ray Computed; 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

To describe a case of oral antibiotic-induced D-lactic acidosis in a patient with enteric overgrowth of Lactobacillus acidophilus.. Single case study.. University-affiliated community hospital.. Oral carbohydrate challenge test with 4000 kcal/d.. A patient had several episodes of D-lactic acidosis after receiving oral antibiotics. Stool cultures yielded Lactobacillus acidophilus resistant to the implicated agents. Provocative challenge with dietary carbohydrate alone, in the absence of antibiotics, failed to reproduce the syndrome.. Oral antibiotics may induce D-lactic acidosis in patients with the short-bowel syndrome by promoting the overgrowth of resistant D-lactate-producing organisms. Interactions between carbohydrate intake and antibiotic use are likely determinants in the development of this syndrome. Periodic use of stool cultures with antimicrobial susceptibility testing may assist in the management of these patients by optimizing the selection of antimicrobial agents.

Topics: Acidosis, Lactic; Anti-Bacterial Agents; Doxycycline; Drug Resistance, Microbial; Humans; Lactobacillus acidophilus; Male; Middle Aged; Short Bowel Syndrome; Trimethoprim, Sulfamethoxazole Drug Combination

A 24 year-old patient with a short-bowel syndrome receiving home parenteral nutrition in addition to oral feeding for 32 months was treated by oral trimethoprim-sulfamethoxazole for urinary tract infection. Three days later, he developed neurologic disorders associated with severe hyperchloremic acidosis and high plasma level of D-lactate. This is a rare complication of intestinal malabsorption due to small bowel by-pass or extensive resection due to transient alteration of intestinal microflora induced by the oral antibiotic treatment. Diagnosis requires a high indice of suspicion.

Topics: Acidosis, Lactic; Adult; Humans; Intestine, Small; Lactates; Malabsorption Syndromes; Male; Nervous System Diseases; Syndrome; Trimethoprim, Sulfamethoxazole Drug Combination; Urinary Tract Infections