نتایج جستجو برای: valsalva maneuver

تعداد نتایج: 8903  

Journal: :The journal of physiological sciences : JPS 2006
Fuyou Liang Hao Liu

The Valsalva maneuver is a frequently used physiological test in evaluating the cardiovascular autonomic functions in human. Although a large pool of experimental data has provided substantial insights into different aspects of the mechanisms underlying the cardiovascular regulations during the Valsalva maneuver, so far a complete comprehension of these mechanisms and the interactions among the...

Journal: :Journal of Telenursing (Joting) 2022

This study aims to determine the effectiveness of modified valsalva maneuver in restoring sinus rhythm patients presenting emergency department Harapan Kita National Heart Hospital Jakarta with Supraventricular Tachycardia (SVT). The method used is quantitative a pre-experimental research design. results showed that affected systolic and diastolic blood pressure heart rate, average difference b...

Journal: :Critical care and resuscitation : journal of the Australasian Academy of Critical Care Medicine 2002
R Nagappan S Arora C Winter

Paroxysmal supraventricular tachycardia (PSVT) is a common clinical problem. Valsalva maneuver and adenosine are effective therapies for many patients with PSVT, although any conversion to an irregular or wide complex tachycardia should prompt consideration of a preexcitation syndrome. We report a case where the Valsalva maneuver and adenosine, in a patient with PSVT and previously undiagnosed ...

Journal: :journal of current ophthalmology 0
سیدعلی طباطبایی seyed-ali tabatabaee محمد سلیمانی mohammad solaimani محمدرضا منصوری mohammad-reza mansouri محمود جباروند mahmoud jabarvand مهدی نیلی احمدآبادی mehdi nili-ahmadabadi احمد میرشاهی ahmad mirshahi هوشنگ فقیهی

purpose : to report a case of purtscher retinopathy associated with valsalva retinopathy after car accident methods : a 54-year-old man presented with a sudden visual loss in his left eye after car accident. fundus examination of the left eye showed cotton-wool spots and retinal hemorrhages in the posterior pole associated with subhyaloid hemorrhage in macula. results : fundus examination showe...

Journal: :AJNR. American journal of neuroradiology 2013
R A Bhadelia N Madan Y Zhao M E Wagshul C Heilman J P Butler S Patz

BACKGROUND AND PURPOSE MR imaging is currently not used to evaluate CSF flow changes due to short-lasting physiological maneuvers. The purpose of this study was to evaluate the ability of MR imaging to assess the CSF flow response to a Valsalva maneuver in healthy participants. MATERIALS AND METHODS A cardiac-gated fast cine-PC sequence with ≤15-second acquisition time was used to assess CSF ...

2017
Enfa Zhao Yafei Zhang Chunmiao Kang Hua Niu Jing Zhao Lei Sun Baomin Liu

The purpose of this study was to investigate the influence of the Valsalva maneuver (VM) on cardiac hemodynamics in patients with patent foramen ovale (PFO). Sixty-five patients who were highly suspected to have PFO were included. The changes in E, A, E/A ratio of mitral valve blood flow, E, A, E/A ratio of tricuspid valve blood flow, left ventricular end-diastolic volume, area and right atrial...

2014
Haroo Kim Hwang-Bo Kak Boin Kim

[Purpose] The purpose of this study was to compare the effect of childbirth delivery method on vaginal pressure and abdominal thickness during the Valsalva maneuver (VAL). [Subjects] Thirty healthy female volunteers (26-39 years of age) were selected for this research. Their delivery histories were: nulliparous 10, vaginal delivery 10, and Cesarean delivery 10. None of the participants had a hi...

Journal: :Chest 1989
L Bernardi R Saviolo D H Spodick

In 14 consecutive patients with varying myocardial function, evaluation of the Valsalva maneuver was performed using aortic pulse pressure decay to investigate a possible quantitative relationship between the pattern of response and the degree of myocardial dysfunction. The aortic pulse pressure response during strain correlated with resting left ventricular end-diastolic pressure and pulmonary...

2015
Tainah P. Lima Paulo T.V. Farinatti Ercole C. Rubini Elirez B. Silva Walace D. Monteiro

OBJECTIVE This study investigated the acute hemodynamic responses to multiple sets of passive stretching exercises performed with and without the Valsalva maneuver. METHODS Fifteen healthy men aged 21 to 29 years with poor flexibility performed stretching protocols comprising 10 sets of maximal passive unilateral hip flexion, sustained for 30 seconds with equal intervals between sets. Protoco...

Journal: :Circulation 1954
H D McINTOSH J F BURNUM J B HICKAM J V WARREN

The cardiac output has been measured during the immediate post-Valsalva maneuver recovery period in normal subjects, patients with clinically significant mitral stenosis, and patients with alterations of the autonomic nervous system. When compared with the resting value, it was found that normal subjects had a decrease in cardiac output during the immediate post-Valsalva recovery period, while ...

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