Effect of coronary artery bypass grafting on blood pressure response to head-up tilting

Blood pressure response to head-up tilt (HUT) in 7 healthy subjects and 9 patients before and after coronary artery bypass grafting (CABG) was measured during supine and 15-min 60° HUT. Stroke volume (SV) and ejection fraction (EF) were assessed by echocardiography. Baseline mean arterial pressure (...

Full description

Saved in:
Bibliographic Details
Published in:The journal of physiological sciences 2020-03, Vol.70 (1), p.21-21, Article 21
Main Authors: Hori, Shinnosuke, Kamijo, Yoshi-Ichiro, Yuzaki, Mitsuru, Kawabe, Tetsuya, Minami, Kohei, Umemoto, Yasunori, Yokoyama, Mao, Uenishi, Hiroyasu, Nishimura, Yoshiharu, Kouda, Ken, Mikami, Yukio, Tajima, Fumihiro
Format: Article
Language:English
Subjects:
Aged
Angina pectoris
Blood Pressure
Body weight
Bypass
Cardiac function
Cardiac Output - physiology
Cardiac patients
Cardiovascular disease
Case-Control Studies
Coronary artery
Coronary artery bypass
Coronary Artery Bypass - methods
Coronary Artery Disease - physiopathology
Coronary heart disease
Coronary vessels
Cross-Sectional Studies
Echocardiography
Echocardiography - methods
Endothelium
Fainting
Female
Heart attacks
Heart beat
Heart rate
Heart Rate - physiology
Heart surgery
Humans
Male
Middle Aged
Original Paper
Orthostatic hypotension
Permeability
Posture - physiology
Rehabilitation
Stroke Volume - physiology
Surgery
Tilt-Table Test
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Blood pressure response to head-up tilt (HUT) in 7 healthy subjects and 9 patients before and after coronary artery bypass grafting (CABG) was measured during supine and 15-min 60° HUT. Stroke volume (SV) and ejection fraction (EF) were assessed by echocardiography. Baseline mean arterial pressure (MAP) and heart rate (HR) in patients before CABG were similar to healthy subjects. MAP in patients decreased by 6 (4-9) mmHg [median (1st-3rd quartiles)] during 7-12 mmHg of HUT with decreased cardiac output (CO = SV × HR) while HR remained unchanged. MAP in healthy subjects remained unchanged during HUT with increased HR. Body weight decreased by 3.5 (2.5-3.7) kg and MAP decreased by 6 (2-13) mmHg during the last 3-min HUT while HR increased after CABG. Decreases in SV and CO during HUT disappeared after CABG. Blood pressure decreased during HUT in patients before and after CABG regardless of HR response.
ISSN:1880-6546
1880-6562
DOI:10.1186/s12576-020-00746-1