The major risk factors were hypokalemia, and severe arrhythmias including intraventricular block, ventricular parasystole and ventricular premature beats.
分析猝死的诱因主要有血清钾浓度降低，严重心律失常，包括室内传导阻滞、室性并行心律、室性早搏等。
Conclusion Biventricular pacing can improve cardiopulmonary function, exercise tolerance and quality of life in patients with congestive heart failure and intraventricular block.
结论双心室起搏能有效改善慢性心衰患者心肺功能，增加运动能量，提高生活质量。
Conclusion Biventricular pacing can improve cardiopulmonary function, exercise tolerance and quality of life in patients with congestive heart failure and intraventricular block.
结论双心室起搏能有效改善慢性心衰患者心肺功能，增加运动能量，提高生活质量。
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