Right ventricular pressure dynamics during exercise: relationship to stress echocardiography
نویسندگان
چکیده
منابع مشابه
Right ventricular pressure/volume relationship at rest and during exercise in patients with chronic lung disease.
In most circumstances in health, efficient alveolar ventilation and alveolar-to-arterial exchange of 02 and CO2 are among the strongest of links in the gas-transport chain during maximal exercise. Indeed, in most instances, the metabolic cost of ventilation represents the only significant contribution ofthe pulmonary system to the limitation of 02 transport to locomotor muscles and thus to the ...
متن کاملEvaluation of right ventricular systolic pressure during incremental exercise by Doppler echocardiography in adults with atrial septal defect.
STUDY OBJECTIVES Pulmonary hypertension is the most important complication in patients with atrial septal defect (ASD), but its role in limiting exercise has not been examined. This study sought to evaluate exercise performance in adults with ASD and determine the contribution of elevated pulmonary artery pressure in limiting exercise capacity. DESIGN We used Doppler echocardiography during e...
متن کاملRight Ventricular Ejection Fraction During Exercise
The response of right ventricular ejection fraction (RVEF) during exercise and its relationship to the location and extent of coronary artery disease are not fully understood. We have recently developed and validated a new method for scintigraphic evaluation of RVEF using rapid multiple-gated equilibrium scintigraphy and multiple right ventricular regions of interest. The technique has been app...
متن کاملSafety of contrast agent use during stress echocardiography in patients with elevated right ventricular systolic pressure: a cohort study.
BACKGROUND Microbubble safety concerns led to changes in product recommendations for patients with pulmonary hypertension. Noninvasive estimation of right ventricular systolic pressure (RVSP) is equivalent to pulmonary artery systolic pressure in the absence of pulmonary outflow obstruction. We analyzed the short- and long-term outcomes of patients who received microbubble contrast and those wh...
متن کاملDiastolic stress echocardiography: hemodynamic validation and clinical significance of estimation of ventricular filling pressure with exercise.
OBJECTIVES Our study attempted to validate a Doppler index of diastolic filling (E/E') during exercise with simultaneously measured left ventricular diastolic pressure (LVDP), investigate its association with exercise capacity, and understand which patients to select for testing. BACKGROUND The ratio of early diastolic transmitral velocity to early diastolic tissue velocity approximates LVDP ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Equine Veterinary Journal
سال: 2010
ISSN: 0425-1644,2042-3306
DOI: 10.1111/j.2042-3306.2002.tb05468.x