Proximal pulmonary emboli modify right ventricular ejection pattern

Proximal pulmonary emboli modify right ventricular ejection pattern.

Analysis of the systolic flow velocity curve (SFVC) in the right ventricular outflow tract is considered as an alternative to the tricuspid valve pressure gradient (TVPG) method for echo-Doppler assessment of pulmonary arterial pressure (P(pa)). The present study checked whether or not SFVC is affected by the cause of pulmonary hypertension. Doppler recordings of 86 patients (39 female, aged 55...

Right 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...

Thermodilution right ventricular ejection fraction. Remaining questions.

Evaluation of right ventricular performance with a right ventricular ejection fraction thermodilution catheter and MRI in patients with pulmonary hypertension.

STUDY OBJECTIVES We sought to compare catheter studies using a right ventricular ejection fraction (REF) catheter together with echocardiography and MRI in patients with pulmonary hypertension. PATIENTS AND METHODS We compared hemodynamic findings, echocardiography, and MRI studies in 16 patients with pulmonary hypertension. Six healthy volunteers served as control subjects for the MRI studie...

Enhanced Pulmonary Vasodilator Reserve and Abnormal Right Ventricular: Pulmonary Artery Coupling In Heart Failure With Preserved Ejection Fraction Andersen et al: Right Ventricular-Pulmonary Artery Coupling in HFpEF

Background—Pulmonary hypertension (PH) and right ventricular (RV) dysfunction are common in patients with advanced HFpEF, yet their underlying mechanisms remain poorly understood. We sought to examine RV-pulmonary artery (PA) functional reserve responses and RV-PA coupling at rest and during -adrenergic stimulation in subjects with earlier-stage HFpEF. Methods and Results—In a prospective trial...