Blood Flow of the Common Carotid Artery and Cardiovascular Responses during Head-up Tilt in Patients with Cerebrovascular Accidents.

Autor: IDO, HISANORI, WATANABE, MASAHIRO, KAWADA, SHOUGO, ADACHI, MASAHIDE, ENISHI, KAZUNARI
Zdroj: Rigakuryoho Kagaku; 2013, Vol. 28 Issue 4, p441-445, 5p
Abstrakt: [Purpose] We investigated cardiovascular responses and blood flow of the common carotid artery during head-up tilt (HUT) in patients with cerebrovascular accidents (CVA). [Subjects] Ten male patients with CVA and 9 healthy elderly males participated in the present study. [Method] Blood pressure, heart rate, and common carotid artery (CCA) blood flow values were measured every 1 min before and during 10 min of 60-degree HUT. [Result] Mean blood pressure in CVA patients fell in the first minute of HUT with increased heart rate, but subsequently blood pressure returned to the level at rest after 2 minutes of HUT. The CVA group showed a significantly larger CCA diameter with a significant decrease in mean blood flow velocity, but showed no significant difference in blood flow volume compared with healthy elderly subjects. Although CCA blood flow diameter and volume tended to be lower in the CVA patients during HUT, there was no significant difference between the two groups. [Conclusion] With this understanding of cardiovascular and CCA blood flow responses during orthostatic stress in CVA patients, we conclude that getting such patients to stand erect in their treatment is safe and should proceed smoothly. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index