[Sonographic diagnostics in operative intensive care medicine : Pericardial hematoma after cardiac surgery].

These two case reports describe the use of transthoracic echocardiography in cardiac surgery patients during postoperative intensive care, when a pericardial hematoma developed. A focused echocardiographic examination was performed, which in both cases led to the correct diagnosis and revealed the cause for hemodynamic instability. Following additional computed tomography (CT) scans, cardiac surgery was performed on one patient, while in the other, bedside sonography was used for controlled pleural puncture and drainage of the pericardial hematoma. The case reports demonstrate that intrathoracic bleeding after cardiac surgery may develop with a latency of days to weeks, which can become hemodynamically relevant and require an intervention. Bedside point of care echocardiography opens the way for securing the diagnosis by means of CT or magnetic resonance imaging (MRI) if the circulatory state of the patient allows this prior to hematoma drainage or evacuation.