نتایج جستجو برای: valsalva ratio

تعداد نتایج: 505412  

Journal: :Ultrasound in obstetrics & gynecology : the official journal of the International Society of Ultrasound in Obstetrics and Gynecology 2007
A K Ornö H P Dietz

OBJECTIVE A Valsalva maneuver is used clinically and on imaging in order to determine female pelvic organ prolapse. We have examined the potential confounding effect of levator co-activation at the time of a Valsalva maneuver and the impact of repetition with biofeedback instruction. METHODS Fifty nulliparous women at 36-38 weeks' gestation received 3D/4D translabial ultrasound investigation ...

Journal: :medical journal of islamic republic of iran 0
mh bagheri from the department of anesthesiology. shiraz university of medical sciences. shiraz. l.r. iran h kamalipour department of anesthesiology, faghihi hospital, zip code 71344, shiraz,i.r.iran m javdani

in order to determine the effect of valsalva maneuver and head rotation on the internal jugular vein (ijv) diameter and cross-sectional area and overlap with the carotid artery (ca) and find the best technique for safe cannulation of the ijv and decrease the risk of ca puncture, the diameter of both the ijv and the ca and percentage of overlap between the two vessels and cross-sectional area of...

Journal: :Journal of applied physiology 2010
Scott L Davis Craig G Crandall

The Valsalva maneuver can be used as a noninvasive index of autonomic control of blood pressure and heart rate. The purpose of this investigation was to test the hypothesis that sympathetic mediated vasoconstriction, as referenced by hemodynamic responses during late phase II (phase IIb) of the Valsalva maneuver, is inhibited during whole body heating. Seven individuals (5 men, 2 women) perform...

Journal: :Diabetes Care 2008
Seung-Hyun Ko Shin-Ae Park Jae-Hyoung Cho Ki-Ho Song Kun-Ho Yoon Bong-Yun Cha Ho-Young Son Ki-Dong Yoo Keon-Woong Moon Yong-Moon Park Yu-Bai Ahn

OBJECTIVE We investigated whether cardiovascular autonomic dysfunction was associated with glycemic control status over time in patients with type 2 diabetes. RESEARCH DESIGN AND METHODS From 1999 to 2000, cardiovascular autonomic nerve function testing (AFT) was performed on patients with type 2 diabetes (n = 1,021) and was followed-up in 2006 and February 2008. Tests for cardiovascular auto...

2011
Virendra C. Patil Harsha V. Patil Sanjay Kshirsagar Bhupal Pujari

We describe a case of ruptured aneurysm of the left coronary sinus of Valsalva diagnosed by transthoracic two-dimensional echocardiography. A very few cases with ruptured left sinus of Valsalva have been reported. We are reporting a rupture of the left sinus of Valsalva into the main pulmonary artery in a 40-year-old male diagnosed by transthoracic echocardiography.

Journal: :The Chinese journal of physiology 2015
Shu-Chun Huang Alice M K Wong Ching-Wen Ho Tzu-Pin Weng Shu-Chuan Cheng Jong-Shyan Wang

Sleep deprivation (SD) leads to cardiovascular risk by disturbing autonomic nervous system (ANS). Whether sex or menstrual cycle influences cardiac ANS interfered by SD remained unclear. This investigation was to further clarify the effects of different menstrual phases on cardiac autonomic nervous activity disturbed by SD. Methodologically, cardiac autonomic modulation before and after 30 h of...

Journal: :Japanese journal of medicine 1989
Y Shizukuda S Yonekura K Tsuchihashi S Tanaka S Komatsu O Iimura

Since the natural history of a coronary artery to left ventricle fistula is not well known, a case of such a fistula in 36-year-old female patient, followed for 20 years is presented. Two-dimensional echocardiography performed as a follow-up examination revealed enlargement of the right coronary artery and the right Valsalva sinus. Two-dimensional color flow mapping showed the jet flow to the a...

Journal: :European journal of cardio-thoracic surgery : official journal of the European Association for Cardio-thoracic Surgery 2006
Daniele Maselli Gaetano Minzioni

Sinotubular junction reconstruction in reimplantation type of valve-sparing aortic procedure can present some problem when a Valsalva graft is used. Since in the Valsalva graft the sinotubular junction height is predetermined, correct matching with native commissures height can be difficult. We propose a method by which it is possible to create a new sinotubular junction in Valsalva graft witho...

2012
Tayfun Sahin Umut Celikyurt Teoman Kilic Goksel Kahraman Güliz Kozdag Aysen Agacdiken Ertan Ural Dilek Ural

BACKGROUND The left ventricular filling pattern may show changes during respiration, which are generally used in the diagnosis of diastolic dysfunction. The clinical importance of the respiratory E/A wave pattern change has been investigated in a limited number of studies. The aim of the present study was to assess the diastolic function of hypertensive patients with respiratory changes in mitr...

Bicuspid aortic valve is traditionally considered an innocuous congenital anomaly. Due to a better and widespread availability of non-invasive imaging techniques, it has come to the fore that 30% of these cases develop complications, viz., valve abnormality (aortic regurgitation and stenosis), and aneurysm of aortic root and ascending aorta. Sinus of Valsalva aneurysm is an uncommon complicatio...

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