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Topic: Valsalva manoeuvre

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Valsalva maneuver

Antonio Maria Valsalva

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	Valsva manoeuvre. Who is Valsva manoeuvre? What is Valsva manoeuvre? Where is Valsva manoeuvre? Definition of Valsva ...
		A Valsalva maneuver is a forced expiration against the nose and mouth held closed.
		The Valsalva maneuver is used as a pressure equalisation technique by scuba divers and aeroplane passengers to avoid barotrauma and discomfort inside their ears when they move to or from a higher pressure breathing environment.
		Some cardiologists measure the Valsalva ratio which is the maximum heart rate in phase II over the minimum heart rate in phase IV of the Valsalva Maneuver.
	www.knowledgerush.com /kr/encyclopedia/Valsva_manoeuvre (323 words)

	Center for Hyperbaric Oxygen Theraphy - Brussels
		By injecting agitated saline during the strain phase of this Valsalva manoeuvre, and releasing the strain when the first saline microbubbles are seen arriving in the right atrium, these bubbles may be swept through a PFO and thus reveal its presence.
		The Valsalva manoeuvre consists of a manual blockage of the nostrils, followed by a forced expiration against closed mouth and nose, to provoke an augmentation of the pressure in the nasopharyngeal cavity.
		We conclude that manoeuvres other than the usual “Divers' Valsalva manoeuvre” are more likely to cause post-release central blood shift, both by the higher levels of ITP reached and by the time during which these ITP's are sustained, thus causing "pooling" of blood beneath the diaphragm and subsequent release when the ITP falls.
	users.swing.be /hyperbare/frdive2pr.htm (2138 words)

	proj16ing
		Valsalva was devoted to teaching and scientific research, as well as to the practice of medicine.
		Valsalva noted that motor paralysis is on the opposite side to the cerebral lesion both in stroke and in cases of cranial injury.
		Valsalva was an extremely skilled anatomist and pathologist, a fine physician, and an excellent surgeon for a quarter-century in the Bolognese hospitals.
	www.ipct.pucrs.br /microg/projetos/antoniovalsalva.html (958 words)

	Tachycardia: Valsalva manoeuvre was not clearly better than carotid sinus massage.
		Tachycardia: Valsalva manoeuvre was not clearly better than carotid sinus massage.
		Valsalva manoeuvre was supervised by an emergency physician or medicine resident.
		As the alternative, the Valsalva manoeuvre was successful in 13 out of 77 patients, and carotid sinus massage was successful in 7 out of 50.
	www.eboncall.org /CATs/251.html (334 words)

	Human Biology Final Year Project (Site not responding. Last check: 2007-10-17)
		The purpose of this study was to use echocardiography as a means to examine cardiac dimensions and beat to beat changes in response to the Valsalva manoeuvre in twelve normal healthy female volunteers.
		It was found that at the end of the strain phase of the Valsalva manoeuvre, left ventricular dimensions had decreased by 13.6% (+5.19%) for end-diastole and a corresponding 11.1% (+6.78%) for end-systole.
		The conclusions drawn from the data are that echocardiography successfully demonstrated the effects of the Valsalva manoeuvre on left ventricular dimensions and heart rate responses.
	www.lboro.ac.uk /departments/hu/projects/abstracts/91hb0077.htm (301 words)

	Valsalva Project (Site not responding. Last check: 2007-10-17)
		The Valsalva maneuver is a common test of the autonomic nervous system in humans.
		Valsalva maneuver consist of straining against a closed glottis for a limited time.
		Therefore a control of the breathing pattern before and after a Valsalva maneuver, the timing of straining, and the pressure level during straining is very important.
	www.bme.vanderbilt.edu /king/valsalva_project.htm (301 words)

	A short biography on the life of the dedicated anatomist -Valsalva Kazi Rehan, Triaridis S, Rhys-Evans P - J Postgrad ... (Site not responding. Last check: 2007-10-17)
		Valsalva observed that the serum produced by gangrene was so acrid that, after tasting it, its extreme sourness irritated the papillae of his tongue for an entire day.
		Valsalva was an extremely skilled anatomist and pathologist, a fine physician, and an excellent surgeon for over a quarter of a century in the Bolognese hospitals.
		Valsalva has a place in the history of psychiatry for having been among the first to call for, and in part to implement, the humanitarian treatment of the insane, preceding Vincenzo Chiarugi and Philippe Pinel.
	www.jpgmonline.com /article.asp?issn=0022-3859;year=2004;volume=50;issue=4;spage=314;epage=315;aulast=Kazi (941 words)

	Interaction between cardiovascular responses to sustained handgrip and Valsalva manoeuvre -- Ewing et al. 38 (5): 483 ...
		Interaction between cardiovascular responses to sustained handgrip and Valsalva manoeuvre -- Ewing et al.
		Interaction between cardiovascular responses to sustained handgrip and Valsalva manoeuvre
		Interactions between the cardiovascular responses to the Valsalva manoeuvre
	heart.bmjjournals.com /cgi/content/abstract/38/5/483 (200 words)

	Valsalva maculopathy » Clinical and Experimental Optometry
		The Valsalva manoeuvre comprises forcible exhalation against the closed glottis, thereby creating a sudden increase in the intrathoracic or intra-abdominal pressure.
		Valsalva maculopathy is an isolated and self-limited event.
		A case of Valsalva maculopathy in a young healthy male attributable to an incontrovertible Valsalva stress associated with weightlifting is presented.
	www.optometrists.asn.au /ceo/backissues/vol85/no1/593 (113 words)

	Untitled Document
		The term valsalva (or abdominal) leak point pressure (VLPP) represents a measure of the intravesical pressure that is required to overcome urethral resistance during a stress manoeuvre such as coughing or straining.
		In the absence of leakage during a progressive valsalva manoeuvre the patient is requested to cough.
		As with the progressive valsalva manoeuvre the patient is asked to cough with increasing force so as to record the lowest possible intra-abdominal pressure to cause leakage.
	www.brazjurol.com.br /pdf/lane_420_425.html (3142 words)

	[No title]
		The Valsalva manoeuvre is a useful bedside test of autonomic function.
		Their response to the Valsalva manoeuvre returns to normal after removal of the aldosterone-secreting tumour.
		Blood pressure rises, remains high throughout the manoeuvre, and returns to its previous level at the end.
	www.frca.co.uk /article.aspx?articleid=100372 (295 words)

	Echocardiography
		The Valsalva maneuver was evaluated by echocardiography in three groups: A) 10 normal volunteers, B) 10 patients with no history of heart failure and normal ejection fractions, and C) 10 patients with heart failure and depressed ejection fractions.
		We defined arterial pressure ratio as the ratio of systolic blood pressure of the final beat during the strain phase of the Valsalva manoeuvre to that during apnoea before the manoeuvre, and tested the accuracy of arterial pressure ratio in predicting pulmonary capillary wedge pressure.
		Pulmonary capillary wedge pressure was then measured during a brief period of apnoea and the Valsalva manoeuvre was performed by application of pressure to the reservoir bag.
	www2.umdnj.edu /~shindler/valsalva.html (2250 words)

	BBC News \| Health \| Forgettable sex
		Instead, according to the doctors "bearing down" - also known in medicine as a Valsalva manoeuvre - had helped to create intense pressure in the brain's blood vessels resulting in temporary lack of blood flow to the central part of the brain.
		The Valsalva manoeuvre is thought to cause global amnesia in one person in 10,000.
		In one reported case, the manoeuvre lead to a ruptured blood vessel in a patient's neck.
	news2.thdo.bbc.co.uk /1/hi/health/208596.stm (293 words)

	UKDivers.net - The Ear
		When performing the Valsalva manoeuvre it is possible to rupture the round window if effort is prolonged and excessive.
		If then excessive and prolonged pressure is applied with the Valsalva manoeuvre the blood pressure momentarily increases causing the perilymph pressure to increase, which can then rupture the round window.
		Frenzel manoeuvre is like the Valsalva manoeuvre in that the diver blows air against the pinched nose, but the frenzel manoeuvre does not use the diaphragm to blow the air, into the eustachian tube, it uses the throat muscles to compress the air in the pharynx instead.
	www.ukdivers.net /physiology/ear.htm (1360 words)

	Baroreflex sensitivity and responses to the Valsalva manoeuvre in subjects with diabetes mellitus -- Bennett et al. 39 ...
		Baroreflex sensitivity and responses to the Valsalva manoeuvre in subjects with diabetes mellitus -- Bennett et al.
		Baroreflex sensitivity and responses to the Valsalva manoeuvre in subjects with diabetes mellitus
		response to Valsalva's manoeuvre was assessed in the same subjects.
	jnnp.bmjjournals.com /cgi/content/abstract/39/2/178 (214 words)

	KhmerConnection > Community > Academics and Student Life
		(2002) Influence of microgravity on astronauts’ sympathetic and vagal responses to Valsalva’s manoeuvre.
		Valsalva straining triggers a greater increase in muscle sympathetic nerve activity in microgravity, and the stimulus, falling arterial pressure, is also greater.
		The Neurolab mission found that responses to Valsalva straining is greater in space, but that the arterial pressure changes that stimulated this response is also greater.
	www.khmer.cc /community/t.c?b=3&t=1305 (1315 words)

	Methods
		In the Valsalva manoeuvre the blowing pressure was monitored and only steadily maintained blowings were accepted.
		In the Valsalva manoeuvre, the ratio on the longest RR interval after blowing (at 40 mm Hg or at least 50% of the subject’s maximum blowing power for 15 seconds) to the shortest one during blowing was calculated.
		In the tilting test, the ratio of the longest RR interval at approximately beat 30 (between beats 20 to 40) to the shortest RR interval at approximately beat 15 (between beats 10 to 20) after quick passive upright tilting (2 seconds, 80˚) was used as the ”30:15 ratio”.
	herkules.oulu.fi /isbn9514259637/html/x707.html (2545 words)

	CardioValens.com:Matters of the Heart (Site not responding. Last check: 2007-10-17)
		The study is to evaluate the effectiveness of the Valsalva manoeuvre compared to other provocation tests by simultaneous haemodynamic measurements of the right and left atrial pressure.
		The gold standard for the detection of a PFO is transoesophageal echocardiography (TEE) and the mostly used provocation test is the Valsalva manoeuvre.
		During the Valsalva manoeuvre a significant pressure gradient could be observed in 84% of the patients, followed by an expiration pressure of 60 mmHg (82%), inspiration (78%), expiration pressure of 40 mmHg (76%), coughing (75%) and an expiration pressure of 20 mmHg (62%).
	www.cardiovalens.com /pickofthemonth/pm-interventional/pmnewsdisplay.asp?newsid=1939 (253 words)

	Abnormal blood pressure pulse
		To achieve an abnormal pressure pulse, the blood pressure is manipulated by performing the so-called Valsalva manoeuvre.
		In the Valsalva manoeuvre the volunteer exhales against a pressure of 40 mmHg for 10 seconds.
		The blood pressure signal and the reconstructed Doppler spectrogram from the corresponding pulses during the exhalation phase of the Valsalva manoeuvre are shown in Fig.
	herkules.oulu.fi /isbn951426973X/html/x1107.html (361 words)

	Journal,Indian Academy of Clinical Medicine (Site not responding. Last check: 2007-10-17)
		Valsalva manoeuvre was performed by the patient in the sitting position under continuous ECG monitoring.
		The patient was asked to blow into a manometer tube with the glottis open to a constant pressure of 40 mmHg for a period of 10 seconds.
		Valsalva ratio was calculated by dividing duration of longest RR after the end of the strain by the shortest RR during the Valsalva strain.
	www.indegene.com /jiacm/indJIACMQTc.html (2415 words)

	Antonio Maria Valsalva (www.whonamedit.com)
		The preparation of the drawings was probably influenced by Eustachi’s plates, which Valsalva greatly admired.
		Valsalva was deeply interested in pathology throughout his life, and Morgagni's great work, De sedibus, contains much material collected by Valsalva.
		Antonio Maria Valsalva, der vergessene Begründer der klinischen Pathologie.
	www.whonamedit.com /doctor.cfm/2053.html (1236 words)

	Eur J Appl Physiol Occup Physiol 1994;68(4):336-40 (Site not responding. Last check: 2007-10-17)
		There was an immediate and significant shortening of the R-R intervals during exercise [mean (SE): 790 (20) to 642 (20) ms] that was not modified when Valsalva manoeuvre was added [783 (28) to 654 (21) ms].
		When exercise was performed simultaneously with Valsalva manoeuvre, Pa increased significantly [13.6 (0.4) to 15.8 (0.5) kPa] and of similar magnitude during Valsalva alone [13.2 (0.4) to 15.3 (0.7) kPa].
		A concomitant Valsalva manoeuvre had no effect on the R-R interval response but caused a marked increase in Pa. From these findings, it is suggested that respiratory influences should be controlled in studies concerned with the cardiovascular responses at the onset of dynamic exercise.
	www.clinimex.com.br /informacao/publicacao_cg/artigo_resumo_publicacao/Abstract_PCI_13.htm (197 words)

	The Christchurch Radiology Group
		We have added a valsalva manoeuvre to this technique to demonstrate abnormalities caused by damage to the pelvic floor musculature.
		Longitudinal scanning during valsalva demonstrates the posterior motion of the bladder.
		The valsalva manoeuvre has added important information pertaining to abnormalities of the pelvic floor musculature.
	www.crg.co.nz /pages/Bulletins/Bulletin_10.html (1505 words)

	Cardio Varia TF4 - Valsalva Manoeuvre (Site not responding. Last check: 2007-10-17)
		The Valsalva Manoeuvre is a standard test made by most medics to test the autonomic nervous system.
		It requires the patient to take a deep breath and whilst pinching their nose and keeping the mouth closed, trying to exhale against a resistance of 40mm Hg for 15 seconds.
		This instrument can therefore be used to measure in detail the Valsalva Manoeuvre, which is one of the cardiologists “Gold Standards” in testing the autonomic nervous system.
	www.mie-uk.com /tf4/software/7.htm (96 words)

	Speed - Acceleration Techniques and Speed Development (Site not responding. Last check: 2007-10-17)
		The body is designed for the Valsalva manoeuvre and needs to be trained how and when to deploy the technique.
		One occurrence is reported in the literature where this technique was responsible for bursting a tiny blood vessel in the eye of an athlete during heavy maximal lifting.
		It is easy to observe that the Valsalva manoeuvre is frequently used safely as a natural function of the body to increase strength, but it is only held for two to three seconds naturally.
	www.brianmac.demon.co.uk /articles/scni15a7.htm (1791 words)

	Pulsatile ocular blood flow: the effect of the Valsalva manoeuvre in open angle and normal tension glaucoma: a case ...
		Pulsatile ocular blood flow: the effect of the Valsalva manoeuvre in open angle and normal tension glaucoma: a case report and prospective study -- Khan et al.
		Pulsatile ocular blood flow: the effect of the Valsalva manoeuvre in open angle and normal tension glaucoma: a case report and prospective study
		to a mercury manometer (30 mm Hg) (Valsalva manoeuvre).
	bjo.bmjjournals.com /cgi/content/abstract/86/10/1089 (318 words)

	Re: Valsalva Manoeuvre (Site not responding. Last check: 2007-10-17)
		As regards these various followup questions (ie alpha-block, beta-block, heart transplant) that could occur in a viva covering the Valsalva manoeuver: These are all very late follow-up questions and to reach this stage you must have done pretty well.
		I have asked the Valsalva manouuvre numerous times in Practive Vivas and it is extremely unusual for the registrar to reach the stage you might think about asking these difficult questions.
		Also, a Valsalva occurs during Anaesthesia either on purpose (eg a neurosurgeon may request it to check haemostasis) or accidentally (forget to open expiratory valve when patient changed from ventilator to spon resps and rebreathing bag becomes quite balloon-like).
	www.qldanaesthesia.com /bulletin/_disc7/00000199.htm (507 words)

	Influence of microgravity on astronauts' sympathetic and vagal responses to Valsalva's manoeuvre -- Cox et al. 538 (1): ...
		Influence of microgravity on astronauts' sympathetic and vagal responses to Valsalva's manoeuvre -- Cox et al.
		Influence of microgravity on astronauts' sympathetic and vagal responses to Valsalva's manoeuvre
		We studied brief autonomic and haemodynamic transients provoked by graded Valsalva manoeuvres in astronauts on Earth and in space, and tested the hypothesis that exposure to microgravity impairs sympathetic as well as vagal baroreflex responses.
	jp.physoc.org /cgi/content/abstract/538/1/309 (837 words)

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