Cabo Salvador F J, Rubio Alvarez J, Amaro Cendón A, García-Bengochea J B
Arch Inst Cardiol Mex. 1981 May-Jun;51(3):221-5.
Between March 1974, and November 1979, a total of 244 epicardial electrodes, 29 in the anterior surface and 215 in the right ventricular diaphragmatic surface (RVDS) were implanted using the 212 a left subcostal approach. In 174 consecutive patients (mean age 64 years) a preoperative epicardial electrophysiological study was made (mapping), with measurement of voltage, current, lead impedance and R wave sensing in different zones of right ventricle. A comparative study between two types of sutureless electrodes was realized. In 21 cases, thresholds chronic measurement was made 32 months after implantation. There were one surgical death (0.4%) with a morbidity of 7.4%. The follow-up is 20 months mean. The mapped group has significantly lower thresholds and better sensing than the unmapped group (p 0.001). Chronic thresholds were obtained at pacemaker replacement in 21 cases (average 32 months postimplant) and were much lower in the mapped group. These are in line with the acute studies.
1974年3月至1979年11月期间，采用左肋下入路共植入了244个心外膜电极，其中29个位于前表面，215个位于右心室膈面（RVDS）。对174例连续患者（平均年龄64岁）进行了术前心外膜电生理研究（标测），测量了右心室不同区域的电压、电流、导联阻抗和R波感知。对两种无缝线电极进行了对比研究。在21例患者中，植入后32个月进行了慢性阈值测量。有1例手术死亡（0.4%），发病率为7.4%。平均随访20个月。标测组的阈值明显低于未标测组，感知也更好（p<0.001）。21例患者在更换起搏器时获得了慢性阈值（平均植入后32个月），标测组的慢性阈值要低得多。这些与急性研究结果一致。
