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Updated: Sep 10, 2026

Chronic Thromboembolic Pulmonary Hypertension and Assessment of Right Ventricular Function in the Piglet
Published on: November 4, 2015
[Assessment of induced noninvasively postextrasystolic potentiation on the right ventricular function in patients
1Cardiovascular Department, First Affiliated Hospital, Wenzhou Medical College.
Abstract:
The indices of postextrasystolic potentiation degree (Rpesp: Rcdz/dt, RHI, delta Q-Zc, delta PEP/RVET) were observed in the patients with cor-pulmonale, chronic obstructive pulmonary disease (COPD) and normal subjects using extrasystole induced by transesophageal atrial pacing combined with differential impedance rheopneumography. The results shows that Rpesp of the patients with cor-pulmonale was larger than that of the patients with COPD and the normal subjects. The positive rates of RCdz/dt, RHI, delta Q-Zc, delta PEP/RVET was detected respectively in 95%, 100%, 85%, 85% of the cor-pulmonale and in 60%, 60%, 70%, 60% in COPD. It suggested that this method be a safe, simple and reliable one to assess right ventricular contraction function and to diagnose early cor-pulmonale.
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