Background: Hemodynamic stress response to laryngoscopy and intubation produces a significant hemodynamic alteration that may adversely affect patients with cardiac and neurological diseases. Fentanyl before induction attenuates hemodynamic stress response. We compared three different doses of fentanyl so as to find the most appropriate dose which prevents the response without adverse consequen...

Investigating mechanisms of hemodynamic control in the brain Brenda R. Chen Neurovascular coupling is the relationship between neural activity and blood flow that allows the brain to exhibit increases in blood flow to areas of elevated neural activity during sensory stimulation. It is these localized changes in blood flow, collectively known as the hemodynamic response, that are detected by mod...

Rapid-presentation event-related functional MRI (ER-fMRI) allows neuroimaging methods based on hemodynamics to employ behavioral task paradigms typical of cognitive settings. However, the sluggishness of the hemodynamic response and its variance provide constraints on how ER-fMRI can be applied. In a series of two studies, estimates of the hemodynamic response in or near the primary visual and ...

The purpose of this study was to compare hemodynamic and blood analyte responses to reduced central venous pressure (CVP) and pulse pressure (PP) elicited during graded lower body negative pressure (LBNP) to those observed during graded blood loss (BL) in conscious humans. We hypothesized that the stimulus-response relationships of CVP and PP to hemodynamic responses during LBNP would mimic tho...

background:   objective: this study aimed at investigating the side effects and hemodynamic effects of using thiopental sodium and propofal as well as effects of these drugs on pregnancy outcome in art cycles.   materials and methods: in this double blinded) randomized controlled trial, 90 woman candidate for art were randomly divided into two groups. 47 patients received propofol (2.5 mg/kg) a...