Ventilatory anaerobic threshold before and after cardiac valve surgery.
نویسندگان
چکیده
منابع مشابه
Ventilatory efficiency before and after lung volume reduction surgery.
BACKGROUND Lung volume reduction surgery (LVRS) has been shown to improve the clearance of carbon dioxide and minute ventilation (V̇E) in select patients with COPD. One variable often assessed in COPD is ventilatory efficiency (V̇E/V̇CO2 ). METHODS We compared 55 LVRS subjects with 25 controls from the National Emphysema Treatment Trial. V̇E/V̇CO2 was calculated from cardiopulmonary exercise testi...
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We have recently demonstrated that exercise training can induce important hemodynamic and metabolic adaptations in patients with chronic heart failure due to severe left ventricular dysfunction. This study examines the accompanying changes in submaximal exercise performance and the ventilatory response to exercise in these patients. Before and after 16-24 weeks of exercise training, subjects un...
متن کاملEndoscopic mitral and tricuspid valve surgery after previous cardiac surgery.
BACKGROUND The purpose of this study was to evaluate the feasibility and effectiveness of a right video-assisted approach for atrioventricular valve disease after previous cardiac surgery. METHODS AND RESULTS Between December 1st 1997 and May 1st 2006, 80 adults (mean age 65+/-12 years; 56% female) underwent reoperative surgery using a video-assisted approach without rib spreading. Previous c...
متن کاملPostural control after a prolonged treadmill run at individual ventilatory and anaerobic threshold.
The objective of the study was to verify whether young males' balance was affected by 30min prolonged treadmill running (TR) at individual ventilatory (IVT) and anaerobic (IAT) thresholds in recovery time. The VO2max, IAT and IVT during an incremental TR were determined. Mean displacement amplitude (Acp) and velocity (Vcp) of center of pressure were recorded before (pre) and after (0min post; 5...
متن کاملValidity of the 6 min walk test in prediction of the anaerobic threshold before major non-cardiac surgery.
BACKGROUND For perioperative risk stratification, a robust, practical test could be used where cardiopulmonary exercise testing (CPET) is unavailable. The aim of this study was to assess the utility of the 6 min walk test (6MWT) distance to discriminate between low and high anaerobic threshold (AT) in patients awaiting major non-cardiac surgery. METHODS In 110 participants, we obtained oxygen...
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ژورنال
عنوان ژورنال: Japanese Circulation Journal
سال: 1993
ISSN: 0047-1828,1347-4839
DOI: 10.1253/jcj.57.208