[Assessment of induced noninvasively postextrasystolic potentiation on the right ventricular function in patients with cor pulmonale].

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.

• Authors: F Liu
• Journal: Zhonghua jie he he hu xi za zhi = Zhonghua jiehe he huxi zazhi = Chinese journal of tuberculosis and respiratory diseases (Zhonghua Jie He He Hu Xi Za Zhi) Vol. 14 Issue 5 Pg. 280-2, 319 (Oct 1991) ISSN: 1001-0939 [Print] China
• PMID: 1726422 (Publication Type: English Abstract, Journal Article)

Topics

• Aged
• Aged, 80 and over
• Cardiac Complexes, Premature (physiopathology)
• Cardiac Pacing, Artificial (methods)
• Female
• Humans
• Lung Diseases, Obstructive (physiopathology)
• Male
• Middle Aged
• Myocardial Contraction
• Pulmonary Heart Disease (physiopathology)
• Ventricular Function, Right