Effect of Acyclovir Therapy on the Outcome of Ventilated Patients With Lower Respiratory Tract Infection and Detection of Herpes Simplex Virus in Bronchoalveolar Lavage

What this Trial Is About

Herpes simplex viruses HSV are very common, affecting nearly 90 of people, and stay in the body for life in a dormant state. When the immune system is weakened, HSV can reactivate and cause infections like cold sores or more serious conditions such as meningitis. In intensive care patients on mechanical ventilation with pneumonia, HSV is often detected in the respiratory tract. This research aims to determine whether treating HSV with acyclovir improves survival in these critically ill patients. The study randomly assigns 616 ventilated ICU patients with pneumonia and HSV detected in their lung fluid to receive either acyclovir treatment or no antiviral therapy. Acyclovir is given intravenously at a dose of 10 mg per kg of body weight every 8 hours for up to 10 days or until ICU discharge if earlier. The trial compares survival rates after 30 days between the two groups and also looks at ventilation-free days, vasopressor-free days, and safety outcomes. Participants will be closely monitored during the study with regular assessments including organ function scores, kidney function tests, microbiological cure, length of ICU and hospital stay, and quality of life measures up to 180 days. Safety will be tracked by recording serious adverse events. This comprehensive evaluation will help clarify whether antiviral therapy benefits ventilated patients with pneumonia and HSV in their lungs.

Acyclovir in Ventilated Patients With Pneumonia and HSV-1 in BAL