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Valsalva Maneuver

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1121. Levator co-activation is a significant confounder of pelvic organ descent on Valsalva maneuver. (Full text)

Levator co-activation is a significant confounder of pelvic organ descent on Valsalva maneuver. 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.Fifty nulliparous women at 36-38 weeks' gestation received 3D/4D translabial ultrasound investigation in the dorsal resting (...) position after bladder emptying. Valsalva maneuvers were recorded initially and after repeated attempts with visual biofeedback both during the maneuver and after, with the operator demonstrating findings on the ultrasound monitor, in order to abolish levator co-activation. Offline analysis was subsequently undertaken.Significant differences between first and optimal Valsalva maneuver were found for bladder neck position, bladder neck descent, hiatal sagittal diameter and hiatal area on Valsalva

2007 Ultrasound in Obstetrics and Gynecology PubMed

1122. Trendelenburg position, simulated Valsalva maneuver, and liver compression do not alter the size of the right internal jugular vein in patients with a bidirectional Glenn shunt. (Full text)

Trendelenburg position, simulated Valsalva maneuver, and liver compression do not alter the size of the right internal jugular vein in patients with a bidirectional Glenn shunt. Ultrasound is increasingly used to facilitate right internal jugular vein (RIJV) cannulation in children. In children without cardiac disease, position changes and enhancement maneuvers increase RIJV cross-sectional area (CSA) and further facilitate cannulation. We investigated the effect of these maneuvers on RIJV CSA (...) in children with a bidirectional Glenn (BDG) shunt presenting for a Fontan procedure.The CSA (cm(2)) of the RIJV in 21 children with a BDG shunt presenting for a Fontan procedure was assessed by ultrasonic planimetry (SonoSite). Two positions, supine (S) and 15 degrees Trendelenburg (T); and two enhancements maneuvers, manual liver compression (L) and a simulated Valsalva maneuver (V) were utilized in combination. Eight separate measurements (S, S + L, S + V, S + L + V, T, T + L, T + V, T + L + V) were

2007 Anesthesia and Analgesia PubMed

1123. The Valsalva maneuver: a bedside "biomarker" for heart failure. (PubMed)

The Valsalva maneuver: a bedside "biomarker" for heart failure. Accurate assessment of volume status remains an important clinical goal in the management of patients with heart failure. Although physical examination can provide clues to volume status, its sensitivity and reproducibility are limited. Other noninvasive methods, such as measurement of natriuretic peptides or the use of impedance cardiography, are not well validated. The cardiovascular response to the Valsalva maneuver had been (...) proposed as a simple, inexpensive bedside test for estimating filling pressures in patients with heart failure. Our objective was to summarize and critically evaluate the evidence for the use of the Valsalva maneuver in evaluating volume status in patients with heart failure. Studies have demonstrated a significant correlation between the cardiovascular response to the Valsalva maneuver and invasively measured ventricular filling pressures in patients with clinical heart failure. Although often

2006 American Journal of Medicine

1124. Cluster headache: orbital hemodynamic changes during Valsalva maneuver. (PubMed)

Cluster headache: orbital hemodynamic changes during Valsalva maneuver. The clinical features of cluster headache (CH) disclose some vascular changes in the symptomatic region, but few instrumental studies have assessed orbital hemodynamics in patients with this disorder.Orbital blood flow reactivity elicited by Valsalva maneuver (VM) was studied with ophthalmic artery eco-Doppler in 16 patients (14 men and 2 women; mean age: 41.2) suffering from episodic CH and in 18 healthy controls. Patients (...) amount of blood at the end of Valsalva. During remission, there might be some latent vascular changes that lead to supersensitive vasodilator responses and/or opening of arteriovenous shunts under certain circumstances such as Valsalva. These phenomena could be relevant in the pathophysiology of CH.

2006 Headache

1125. Cerebral hemodynamics during the Valsalva maneuver: insights from ganglionic blockade. (Full text)

Cerebral hemodynamics during the Valsalva maneuver: insights from ganglionic blockade. The aim of this study was to differentiate the mechanical effects of the Valsalva maneuver (VM) from the effects of changes in autonomic neural activity on cerebral hemodynamics in humans.Nine healthy subjects performed the VM before and after autonomic ganglionic blockade with trimethaphan. Blood pressure (BP) was measured in the radial artery with an indwelling catheter or at the finger by Finapres

2004 Stroke PubMed

1126. Use of Valsalva's maneuver to detect early recurrence of congestive heart failure in a randomized trial of furosemide withdrawal in older patients. (PubMed)

Use of Valsalva's maneuver to detect early recurrence of congestive heart failure in a randomized trial of furosemide withdrawal in older patients. 10573455 1999 12 07 2013 11 21 0002-8614 47 11 1999 Nov Journal of the American Geriatrics Society J Am Geriatr Soc Use of Valsalva's maneuver to detect early recurrence of congestive heart failure in a randomized trial of furosemide withdrawal in older patients. 1384-5 van Kraaij D J DJ Jansen R W RW Bouwels L H LH Go R I RI Verheugt F W FW (...) Valsalva Maneuver Ventricular Pressure physiology 1999 11 26 1999 11 26 0 1 1999 11 26 0 0 ppublish 10573455

1999 Journal of the American Geriatrics Society

1127. Reduced time for femoral venipuncture by simple bedside application of Valsalva maneuver (the poor cardiologist's smart needle). (PubMed)

Reduced time for femoral venipuncture by simple bedside application of Valsalva maneuver (the poor cardiologist's smart needle). 8184843 1994 06 16 2004 11 17 0002-9149 73 13 1994 May 15 The American journal of cardiology Am. J. Cardiol. Reduced time for femoral venipuncture by simple bedside application of Valsalva maneuver (the poor cardiologist's smart needle). 1023-4 Bombardini T T Istituto di Fisiologia Clinica, CNR, Pisa, Italy. Picano E E Magagnini E E eng Clinical Trial Journal Article (...) Randomized Controlled Trial United States Am J Cardiol 0207277 0002-9149 AIM IM Adult Aged Bloodletting methods Catheterization methods Femoral Vein Humans Male Middle Aged Valsalva Maneuver 1994 5 15 1994 5 15 0 1 1994 5 15 0 0 ppublish 8184843 0002-9149(94)90165-1

1994 The American journal of cardiology

1128. Effect of position on cardiovascular response during the Valsalva maneuver. (PubMed)

Effect of position on cardiovascular response during the Valsalva maneuver. Sudden cardiac death (SCD) has frequently been associated with the Valsalva maneuver (VM), which is characterized by sudden intense changes in systolic blood pressure (SBP) and heart rate (HR). The purpose of this study was to examine the effect of manipulating body position on the intensity of SBP and HR changes during the VM. Thirty-two men and 32 women (35-55 years) without a history or signs of cardiovascular

1990 Nursing research

1129. Effects of hypovolemia and posture on responses to the Valsalva maneuver. (PubMed)

Effects of hypovolemia and posture on responses to the Valsalva maneuver. We tested the hypotheses that hypovolemia would result in attenuated elevation in blood pressure, greater baroreflex-mediated tachycardia, and reduced capacity for vasoconstriction during a Valsalva maneuver (VM).Heart rate (HR) and mean arterial pressure (MAP) were measured beat-by-beat before strain, during a 15-s VM strain at 30 mmHg expiratory pressure, and post-strain. Eight subjects performed three VM trials in each (...) ), but not by circulating blood volume. Therefore, our results did not support our hypothesis that hypovolemia would result in attenuated elevation in blood pressure, greater baroreflex-mediated tachycardia, and reduced capacity for vasoconstriction during a Valsalva maneuver. However, moderate hypovolemia can be specifically predicted by the phase I response to a VM performed in the standing posture.

1996 Aviation, space, and environmental medicine

1130. Comparison of treatment of supraventricular tachycardia by Valsalva maneuver and carotid sinus massage. (PubMed)

Comparison of treatment of supraventricular tachycardia by Valsalva maneuver and carotid sinus massage. To compare the efficacy of the Valsalva maneuver with that of carotid sinus massage (CSM) in terminating paroxysmal supraventricular tachycardia (SVT) in the ED.This prospective, randomized case study was performed in the ED of a tertiary care institution. Patients were at least 10 years of age with regular narrow complex tachycardia and had an ECG diagnosis of SVT. Patients with regular (...) narrow complex tachycardia were randomly assigned to undergo either the Valsalva maneuver or CSM. If the tachycardia was not terminated by the method chosen by randomization, then the alternative method of vagal maneuver was used. If the tachycardia was not converted by both methods of vagal stimulation, patients would undergo either synchronized electrical cardioversion or a pharmacologic method of conversion at the discretion of the treating physician, depending on the patient's hemodynamic

1998 Annals of Emergency Medicine

1131. A noninvasive evaluation of baroreceptor sensitivity with the Valsalva maneuver and phenylephrine methods. (PubMed)

A noninvasive evaluation of baroreceptor sensitivity with the Valsalva maneuver and phenylephrine methods. In a double-blind crossover study, we compared baroreceptor sensitivity (BS) and latency, derived from the phenylephrine method with BS and latency derived from phase IV of the Valsalva maneuver (VM), using the Finapres, a noninvasive blood pressure monitor. Ten healthy volunteers were enrolled in the study and BS was determined with placebo, atropine (0.03 mg/kg) and atenolol (10 mg (...) by the Valsalva maneuver with placebo and atropine, but not with atenolol, suggests a parasympathetically influenced vasodilation, and sympathetically medicated tachycardia during phase IV of the VM.

1996 Methods and findings in experimental and clinical pharmacology

1132. Contrast transcranial Doppler ultrasound in the detection of right-to-left shunts: comparison of Echovist-200 and Echovist-300, timing of the Valsalva maneuver, and general recommendations for the performance of the test. (PubMed)

Contrast transcranial Doppler ultrasound in the detection of right-to-left shunts: comparison of Echovist-200 and Echovist-300, timing of the Valsalva maneuver, and general recommendations for the performance of the test. Cardiac right-to-left shunts (RLS) can be identified by transesophageal echocardiography (TEE) as well as by transcranial Doppler ultrasound (TCD) using contrast agents, such as Echovist-200 or Echovist-300 in conjunction with a Valsalva maneuver (VM) as provocation procedure

2002 Cerebrovascular diseases (Basel, Switzerland)

1133. Lack of accentuation by the Valsalva maneuver of the murmur of idiopathic hypertrophic subaortic stenosis: importance of monitoring the pulse. (Full text)

Lack of accentuation by the Valsalva maneuver of the murmur of idiopathic hypertrophic subaortic stenosis: importance of monitoring the pulse. 7199371 1982 05 12 2018 11 13 0008-4409 126 1 1982 Jan 01 Canadian Medical Association journal Can Med Assoc J Lack of accentuation by the Valsalva maneuver of the murmur of idiopathic hypertrophic subaortic stenosis: importance of monitoring the pulse. 48-50 LeJemtel T H TH Ribner H S HS Strom J A JA Jordan A A Sonnenblick E H EH eng HL 07071-03 HL (...) NHLBI NIH HHS United States Case Reports Journal Article Research Support, U.S. Gov't, P.H.S. Canada Can Med Assoc J 0414110 0008-4409 AIM IM Cardiomyopathy, Hypertrophic diagnosis physiopathology Electrocardiography Female Heart Auscultation Heart Murmurs Humans Middle Aged Phonocardiography Pulse Valsalva Maneuver 1982 1 1 1982 1 1 0 1 1982 1 1 0 0 ppublish 7199371 PMC1862801 Am J Med. 1965 Dec;39(6):923-33 5853043 Am J Cardiol. 1976 Jan;37(1):89-92 942679 Circulation. 1964 Mar;29:422-31 14128830

1982 Canadian Medical Association Journal PubMed

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