Results 31 to 40 of about 3,322,345 (245)

Cardiovascular Response to Posture Changes: Multiscale Modeling and in vivo Validation During Head-Up Tilt

Frontiers in Physiology, 2022
In spite of cardiovascular system (CVS) response to posture changes have been widely studied, a number of mechanisms and their interplay in regulating central blood pressure and organs perfusion upon orthostatic stress are not yet clear.
Matteo Fois, Simona Vittoria Maule, Marta Giudici, Matteo Valente, Luca Ridolfi, Stefania Scarsoglio   +5 more
doaj   +1 more source

Use of an Android application "clinometer" for measurement of head down tilt given during subarachnoid block

Saudi Journal of Anaesthesia, 2016
Context: Head down tilt is given to patients after sub arachnoid block for adjustment of height of block. However, the amount of tilt given is subjective and cannot be documented.
R B Dixit, M M Neema
doaj   +1 more source

Analogs of microgravity: the function of Schlemm’s canal, intraocular pressure and autonomic nervous during the head-down tilt test in healthy subjects [PDF]

International Journal of Ophthalmology, 2021
AIM: To evaluate the ocular outcomes and to elucidate possible mechanisms underlying intraocular pressure (IOP) change following the head-down tilt (HDT) test.
Wei Chen, Zhi-Qi Chen, Yan Xiang, Chao-Hua Deng, Hong Zhang, Jun-Ming Wang   +5 more
doaj   +1 more source

Sleep Is Compromised in −12° Head Down Tilt Position

Frontiers in Physiology, 2019
Recent studies are elucidating the interrelation between sleep, cranial perfusion, and cerebrospinal fluid (CSF) circulation. Head down tilt (HDT) as a simulation of microgravity reduces cranial perfusion.
Alessa L. Boschert, David Elmenhorst, David Elmenhorst, Peter Gauger, Zhili Li, Maria T. Garcia-Gutierrez, Darius Gerlach, Bernd Johannes, Jochen Zange, Andreas Bauer, Andreas Bauer, Jörn Rittweger, Jörn Rittweger   +12 more
doaj   +1 more source

Comparison of arterial to end-tidal carbon dioxide gradient P (a-ET)CO2 in volume versus pressure controlled ventilation in patients undergoing robotic abdominal surgery in the Trendelenburg position. A randomised controlled study

Indian Journal of Anaesthesia, 2022
Background and Aims: Robotic surgery is increasingly prevalent as an advancement in care. Steep head-down positions in pelvic surgery can increase the ventilation-perfusion mismatch and increase ventilatory requirements to offset carbon dioxide (CO2 ...
Sugashini Veerasamy, Lakshmi Kumar, Anandajith Kartha, Sunil Rajan, Niranjan Kumar, Shyam S Purushottaman   +5 more
doaj   +1 more source

2023-12-05_Bouquin HR-change-TILT-Supplemental_Figures.pdf

, 2023
Heart rate variability during head-up tilt in women and men.
Heidi Bouquin (17563521)
core   +1 more source

The influence of different patient positions during rapid induction with severe regurgitation on the volume of aspirate and time to intubation: a prospective randomised manikin simulation study

BMC Anesthesiology, 2019
Background Aspiration is a main contributor to morbidity and mortality in anaesthesia. The ideal patient positioning for rapid sequence induction remains controversial. A head-down tilt and full cervical spine extension (Sellick) might prevent aspiration
Michael St. Pierre, Frederick Krischke, Bjoern Luetcke, Joachim Schmidt   +3 more
doaj   +1 more source

Effects of head-down tilt on intrapulmonary shunt fraction and oxygenation during one-lung ventilation in the lateral decubitus position

, 2007
OBJECTIVE: During one-lung ventilation, surgical positions significantly affect deterioration of oxygenation, and the lateral decubitus position is superior in preventing dangerous hypoxemia compared with the supine position.
방서욱, 심재광, 최용선, 홍용우, 정경영, 곽영란   +5 more
core   +2 more sources

Intraoperative changes in whole-blood viscosity in patients undergoing robot-assisted laparoscopic prostatectomy in the steep Trendelenburg position with pneumoperitoneum: a prospective nonrandomized observational cohort study

BMC Anesthesiology, 2020
Background The aim of this study was to investigate the effect of the steep Trendelenburg position (STP) with pneumoperitoneum on whole-blood viscosity (WBV) in patients undergoing robot-assisted laparoscopic prostatectomy (RALP). The study also analyzed
Jung-Woo Shim, Hyun Kyung Moon, Yong Hyun Park, Misun Park, Jaesik Park, Hyung Mook Lee, Yong-Suk Kim, Young Eun Moon, Sang Hyun Hong, Min Suk Chae   +9 more
doaj   +1 more source

Dynamic cerebral autoregulation is preserved during acute head-down tilt

, 2003
Complete ganglion blockade alters dynamic cerebral autoregulation, suggesting links between systemic autonomic traffic and regulation of cerebral blood flow velocity.
Pellegrini, Guy, Cooke, William H., Kovalenko, Olga A.   +2 more
core   +1 more source