[Perioperative monitoring of the QT interval].

The feasibility of routine perioperative monitoring of the QT interval is demonstrated for the first time in two patients suffering from acquired long QT syndrome. These cases demonstrate that automatic perioperative monitoring of the QT interval is simple and easy to achieve. Besides sufficient premedication, normalized electrolytes, a calm and quiet atmosphere, avoiding QT prolonging drugs and the possibility of immediate defibrillation, monitoring of the QT interval should be considered in the perioperative treatment of these cardiac risk patients.