Babuty D, Fauchier L, Cosnay P
Cardiology B Department, Hospital Trousseau, 37044 Tours, France.
Heart. 1999 Jan;81(1):94-6. doi: 10.1136/hrt.81.1.94.
Two cases are reported (both men, one 72 and one 54 years old) of inappropriate shocks delivered by an implantable cardiac defibrillator (ICD) device, which oversensed the myopotentials induced by deep breathing and Valsalva manoeuvre. No damage to leads was associated with the oversensing of myopotentials. The mechanism of the inappropriate shocks was determined using real time electrograms. Modification of the duration of ventricular detection and decrease in sensitivity made it possible to avoid the oversensing of myopotentials and to deliver ICD treatment.
报告了两例植入式心脏除颤器（ICD）不恰当电击的病例（均为男性，一例72岁，另一例54岁），该设备过度感知了深呼吸和瓦尔萨尔瓦动作诱发的肌电位。肌电位过度感知未伴有导线损伤。通过实时心电图确定了不恰当电击的机制。调整心室检测时长并降低灵敏度，从而避免了肌电位的过度感知并实现了ICD治疗。
