Iatrogenic Pneumopericardium in a Male Full-Term Newborn with Spontaneous Pneumothorax

Neonatal pneumopericardium, a collection of air in the pericardial sac, is less common form of air leak syndrome, but unfortunately with high mortality rate. We report a rare case of male full-term newborn who soon after birth presented with respiratory distress. Chest radiograph showed spontaneous bilateral pneumothorax after which a chest drain was placed between anterior and midaxillary line in the 5^th right intercostal space. The infant soon presented with tachypnea, dyspnea, muffled heart sounds, acidosis indicating cardiorespiratory worsening. On chest radiograph ‘’Halo’’ sign appeared indicating pneumopericardium. We believe that spontaneous reposition of a chest drain damaged the pericardial sac which combined with ventilation mechanism (‘’Macklin effect’’) most likely led to pneumopericardium. After partial chest drain extraction the infant showed signs of improvement, but had to be closely monitored due to risk of tension pneumopericardium. Careful thoracal drain placement and fixation is crucial to prevent iatrogenic pneumopericardium, which can lead to deadly tension pneumopericardium.