Shul'man V A, Kostiuk F F, Kusaev V V, Matiushin G V, Klemenkov S V
Kardiologiia. 1986 Nov;26(11):84-7.
Forty-five (17.6%) of 256 coronary patients showed inadequately small heart rate augmentation in response to rationed exercise ("chronotropic incompetence"). To assess their sinoatrial node function, esophageal atrial stimulation was done in all patients before and after drug-induced vegetative block, and the adjusted sinoatrial node function time and sinoatrial conduction time were determined. Electrophysiological evidence suggests that "chronotropic incompetence" is in most cases determined by abnormal sinoatrial rhythm. Rationed exercise testing can be used as a screening test for latent weak sinoatrial node syndrome in coronary patients.
256例冠心病患者中有45例（17.6%）在定量运动时心率增加不足（“变时性功能不全”）。为评估其窦房结功能，在药物诱导的自主神经阻滞前后对所有患者进行了食管心房刺激，并测定了校正的窦房结功能时间和窦房传导时间。电生理证据表明，“变时性功能不全”在大多数情况下是由异常的窦房节律决定的。定量运动试验可作为冠心病患者潜在隐匿性窦房结综合征的筛查试验。
