Results 231 to 240 of about 43,390 (300)

Determinants of Abnormal Pulmonary Vasodilatory Response With Exercise in HFpEF: Pulmonary Vascular‐Left Atrial Axis Abnormalities

open access: yesComprehensive Physiology, Volume 16, Issue 4, August 2026.
Compared to traditional cardiometabolic comorbidities, COPD and atrial fibrillation are uniquely linked to pulmonary vascular remodeling in HFpEF. The impact of these two comorbidities on pulmonary vascular‐left atrial axis is highlighted by the shared biventricular morphology among HFpEF subgroups.
Mariana Garcia‐Arango   +20 more
wiley   +1 more source

Assessment of Pulmonary Vascular Impedance in Patients With Severe Pulmonary Arterial Hypertension

open access: yesComprehensive Physiology, Volume 16, Issue 4, August 2026.
Pulmonary vascular impedance (PVZ) was calculated from clinical PA pressure and RVOT flow velocity profiles. Participants with increased pulmonary vascular resistance have increased PVZ, afterload, and diastolic stiffness. The characteristic impedance (ZC) to mean PA pressure relationship models the effect of proximal vasculature remodeling on ZC for a
Keeley Shea Ravellette   +7 more
wiley   +1 more source

In‐Depth optimization and characterization of prostatic and penile vessel imaging with Ferumoxytol‐enhanced magnetic resonance imaging

open access: yesMedical Physics, Volume 53, Issue 8, August 2026.
Abstract Background Vasculogenic erectile dysfunction (ED) arises from impairment of the vascular supply to the penis and requires reliable quantitative imaging for diagnosis, management, and longitudinal monitoring, particularly after pelvic surgery or radiotherapy.
Darren Fang   +8 more
wiley   +1 more source

Simultaneous Assessment of Intracranial Artery and Paravascular CSF Pulsation Using 3D Whole‐Brain Diffusion‐Prepared Cine bSSFP (DECAF) MRI

open access: yesMagnetic Resonance in Medicine, Volume 96, Issue 2, Page 727-740, August 2026.
ABSTRACT Purpose To propose a noninvasive and quantitative MRI approach to simultaneously assessing intracranial artery pulsation and paravascular cerebrospinal fluid (CSF) pulsation in the human brain. Methods We developed a 3D whole‐brain Diffusion‐prepared Cine bSSFP (DECAF) MRI technique, with improved motion‐sensitized driven‐equilibrium providing
Chang Ni   +8 more
wiley   +1 more source

Impact of Higher Versus Lower Blood Pressure Targets on Pulmonary Vascular Hemodynamics During Intensive Care After Out‐of‐Hospital Cardiac Arrest

open access: yesActa Anaesthesiologica Scandinavica, Volume 70, Issue 7, August 2026.
ABSTRACT Background Hemodynamic management after out‐of‐hospital cardiac arrest (OHCA) is critical, yet the impact of vasopressor‐driven mean arterial pressure (MAP) targets on pulmonary circulation and right ventricular (RV) function remains unclear.
Shira K. Hendin   +10 more
wiley   +1 more source

Diagnosis of Growth Hormone Deficiency in Children: Comparative Performance of Arginine Versus Glucagon as the First Stimulation Test

open access: yesClinical Endocrinology, Volume 105, Issue 2, Page 213-219, August 2026.
ABSTRACT Objective Growth hormone deficiency (GHD) diagnosis typically requires the performance of two sequential stimulation tests. Glucagon stimulation test (GST) and arginine stimulation test (AST) are widely used. This study aimed to determine the most suitable order of tests.
David Shaki   +6 more
wiley   +1 more source

Reference Values for Pulse Oximetry Testing in Permanent Teeth: A Systematic Review and Meta‐Analysis

open access: yesInternational Endodontic Journal, Volume 59, Issue 8, Page 1557-1585, August 2026.
ABSTRACT Background Pulse oximetry is an accurate diagnostic method for assessing the condition of the dental pulp; however, the normal oxygen saturation levels for each tooth type are yet to be clearly defined. Objectives This systematic review and meta‐analysis aims to answer the question: What are the reference values for pulse oximetry testing in ...
Lilian Tietz   +3 more
wiley   +1 more source

Pulsatile flow in rigid tubes [PDF]

open access: yesJournal of Applied Physiology, 1965
The purpose of this study was to examine critically the theoretical equations derived for pulsatile laminar flow in rigid straight tubes. These equations, presented in their most useful form by J. R. Womersley in 1955, give the fluid flow rate as a function of the pressure gradient-time relationship, pulse frequency, fluid properties, and tube radius,
R G, Linford, N W, Ryan
openaire   +3 more sources

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