acyclovir and Hypoxia

The work-up and initial management of a critically ill neonate is challenging and anxiety provoking for the Emergency Physician. While sepsis and critical congenital heart disease represent a large proportion of neonates presenting to the Emergency Department (ED) in shock, there are several additional etiologies to consider. Underlying metabolic, endocrinologic, gastrointestinal, neurologic, and traumatic disorders must be considered in a critically ill infant. Several potential etiologies will present with nonspecific and overlapping signs and symptoms, and the diagnosis often is not evident at the time of ED assessment.. We present the case of a neonate in shock, with a variety of nonspecific signs and symptoms who was ultimately diagnosed with tachycardia-induced cardiomyopathy secondary to a resolved dysrhythmia. WHY SHOULD AN EMERGENCY PHYSICIAN BE AWARE OF THIS?: This case highlights the diagnostic and therapeutic approach to the critically ill neonate in the ED, and expands the differential diagnosis beyond sepsis and critical congenital heart disease. Knowledge of the potential life-threatening etiologies of shock in this population allows the Emergency Physician to appropriately test for, and empirically treat, several potential etiologies simultaneously. Additionally, we discuss the diagnosis and management of supraventricular tachycardia and Wolff-Parkinson-White syndrome in the neonatal and pediatric population, which is essential knowledge for an Emergency Physician.

Topics: Acidosis; Acyclovir; Adenosine; Ampicillin; Anti-Arrhythmia Agents; Anti-Bacterial Agents; Antiviral Agents; Cardiomyopathies; Cefotaxime; Electrocardiography; Emergency Service, Hospital; Feeding Behavior; Fluid Therapy; Glucose; Humans; Hypoglycemia; Hypotension; Hypoxia; Infant, Newborn; Lethargy; Male; Propanolamines; Propranolol; Shock; Tachycardia; Tachycardia, Supraventricular; Vomiting; Wolff-Parkinson-White Syndrome

We describe a rare case of a 79-year-old woman who developed herpes simplex virus pneumonia after mitral valve replacement. The patient showed persistent hypoxemia with bilateral glass-like shadows on chest radiography. Cytopathology examination of intratracheal secretions revealed herpes simplex virus infection. The patient, who improved gradually after acyclovir administration, was taken off the ventilator completely. Physicians should consider viral pulmonary infection to be a potential cause of unexplained hypoxemia that does not respond to conventional antibiotic treatment in critically ill, immunocompromised patients.

Topics: Acyclovir; Aged; Antiviral Agents; Female; Heart Valve Prosthesis Implantation; Herpes Simplex; Humans; Hypoxia; Mitral Valve; Mitral Valve Insufficiency; Pneumonia, Viral; Respiration, Artificial; Time Factors; Tomography, X-Ray Computed; Treatment Outcome; Ventilator Weaning

We report seven cases of seven pulmonary varicella occurring in seven adults without any previous history of known immunological deficit. In all the cases the vesicular eruption was diffuse, occurring after contact with a child presenting with benign varicella. The respiratory signs appeared five to seven days after the cutaneous signs. On admission there was significant hypoxaemia (PaO2 = 35 to 47 mmHg on air), requiring positive pressure expiration (10 to 18 cmH2O) on mechanical ventilation (4 times) or spontaneous ventilation (3 times). The pulmonary radiographs showed diffuse nodular interstitial shadowing. Treatment consisted of Acyclovir (10 mg/kg/8 h). Five patients were cured without any sequellae five to six days after ventilation. One patient died (3 months pregnant), 1 patient presented with a superinfection with staphylococcus aureus. The occurrence of respiratory signs in an adult presenting with varicella requires hospitalisation for treatment with Acyclovir and also the prevention of superinfections.

Topics: Acyclovir; Adult; Chickenpox; Female; Herpesvirus 3, Human; Humans; Hypoxia; Male; Pneumonia, Pneumococcal