ST-Segment Elevation Myocardial Infarction and Right Atrial Myxoma.

 Cardiac myxoma is the most common primary cardiac tumor. Although benign, it can cause life-threatening complications due to embolization.  We describe an ST-elevation myocardial infarction (STEMI) involving a giant right atrial myxoma and persisting foramen ovale (PFO) in a 64-year-old male patient and report on emergency percutaneous interventional therapy and subsequent cardiac surgery to remove the right atrial myxoma.

Giant Intramural Right Ventricular Hematoma after PCI in a Patient with Condition after CABG.

Coronary artery perforation secondary to percutaneous coronary intervention (PCI) is a rare, but a potentially life-threatening complication. There is a misconception that cardiac tamponade rarely occurs in patients with prior coronary artery bypass grafting (CABG). We first describe a giant right ventricular intramural hematoma following PCI via a saphenous vein graft to treat a distal stenosis of the right coronary artery, and its successful treatment with redo cardiac surgery.

L-arginine protects the mesenteric vascular circulation against cardiopulmonary bypass-induced vascular dysfunction.

Background: The aim of our study was to determine whether addition of the nitric oxide donor l-arginine at reperfusion may prevent the cardiopulmonary bypass (CPB)-induced vascular alterations in the intestine.

Methods: Twelve dogs underwent 90-minute hypothermic CPB. After 60 minutes, the cardiac arrest-treated group (n = 6) received 40 mg/kg intravenous bolus l-arginine, followed by 3 mg/kg/min infusion for 20 minutes.

Mesenteric complications after hypothermic cardiopulmonary bypass with cardiac arrest: underlying mechanisms.

The aim of this study was to determine the pathophysiological mechanisms of postcardiopulmonary bypass (CPB) intestinal dysfunction using an in vivo canine model of extracorporeal circulation. Six dogs underwent a 90 min hypothermic CPB with continuous monitoring of mean arterial blood pressure (MAP) and mesenteric blood flow (MBF). Reactive hyperemia and vasodilator responses of the superior mesenteric artery to acetylcholine and sodium nitroprusside were determined before and after CPB.