This report highlights the early and unusual detection of a pneumopericardium by echocardiography prior to potential development of cardiocirculatory compromise. It is important to consider pneumopericardium into the differential diagnosis when difficulties arise in the visualization of the heart by conventional echocardiography. Pneumopericardium is associated with a high mortality rate and may be effectively treated by immediate insertion of a pericardial catheter.
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Echocardiography demonstrating pericardial air entrapment
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Case report
A 29 2/7-week-old premature neonate with a birth weight of 1400 g was born by spontaneous vaginal delivery because of maternal vaginal hemorrhage and premature contractions. Apgar scores at 5 and 10 min were 7 and 7.
The infant was given two doses of surfactant because of severe respiratory distress syndrome and due to worsening respiratory function, conventional mechanical ventilation was switched to high frequency oscillatory ventilation. On day 2 of life, an echocardiography was performed for PDA (Patent ductus arteriosus) assessment, demonstrating circular air entrapment surrounding the infant’s heart (Video 1). On chest X‑ray, suspected pneumopericardium was confirmed (Fig. 1a), and a pericardial tube was inserted with continuous drainage for 3 days (Fig. 1b). The following day the neonate developed right-sided pneumothorax (Fig. 2a), which mandated the insertion of a chest drain (Fig. 2b).
Fig. 1
a Chest X-ray demonstrating circular pneumopericardium, b Chest X-ray after insertion of pericardial tube (pigtail)
Fig. 2
a Chest X-ray demonstrating right-sided pneumothorax, b Chest X-ray after insertion of a chest tube (pigtail) catheter
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After 3 days, the tubes were removed, and the infant was extubated on day 9 of life. On cerebral ultrasonography, bilateral grade 2 intraventricular hemorrhage was noted. The infant was discharged home without further sequelae at 37 completed weeks of gestation and a body weight of 2785 g.
This report highlights the early and unusual detection of a pneumopericardium by echocardiography prior to potential development of cardiocirculatory compromise. It is important to take pneumopericardium into the differential diagnosis when difficulties arise in the visualization of the heart by conventional echocardiography. Pneumopericardium is associated with a high mortality rate, and may be effectively treated by immediate insertion of a pericardial catheter [1‐3].
Conflict of interest
S. Meyer, S. Ruffing, M. Geipel, M. Poryo, A. Larsen and S. Nemat declare that they have no competing interests.
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