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valsalva maneuver in coronary artery disease

https://read.qxmd.com/read/11194240/diastolic-dysfunction-in-normotensive-men-with-well-controlled-type-2-diabetes-importance-of-maneuvers-in-echocardiographic-screening-for-preclinical-diabetic-cardiomyopathy
#21
JOURNAL ARTICLE
P Poirier, P Bogaty, C Garneau, L Marois, J G Dumesnil
OBJECTIVE: Because a pseudonormal pattern of ventricular filling has never been considered in studies that reported a prevalence of left ventricular diastolic dysfunction (LVDD) between 20 and 40%, our aim was to more completely evaluate the prevalence of LVDD in subjects with diabetes. RESEARCH DESIGN AND METHODS: We studied 46 men with type 2 diabetes who were aged 38-67 years; without evidence of diabetic complications, hypertension, coronary artery disease, congestive heart failure, or thyroid or overt renal disease; and with a maximal treadmill exercise test showing no ischemia...
January 2001: Diabetes Care
https://read.qxmd.com/read/11175032/can-the-extent-of-change-of-the-left-ventricular-doppler-inflow-pattern-during-the-valsalva-maneuver-predict-an-elevated-left-ventricular-end-diastolic-pressure
#22
Hans-Peter Brunner-La Rocca, Christine Helena Attenhofer, Rolf Jenni
BACKGROUND: The objective of this study was to determine whether analysis of changes in the transmitral filling pattern during the Valsalva maneuver improves the diagnostic accuracy to noninvasively detect an elevated left ventricular end-diastolic pressure (LVEDP). METHODS: We prospectively compared the diagnostic accuracy of the mitral flow velocity indexes at baseline with those obtained during the Valsalva maneuver to detect an elevated LVEDP in 50 patients with coronary artery disease. RESULTS: Moderate correlations were found between LVEDP (mean, 11...
April 1998: Echocardiography
https://read.qxmd.com/read/10979878/cardiac-sympathetic-denervation-in-parkinson-disease
#23
COMPARATIVE STUDY
D S Goldstein, C Holmes, S T Li, S Bruce, L V Metman, R O Cannon
BACKGROUND: In Parkinson disease, orthostatic hypotension can result from L-dopa treatment or from sympathetic neurocirculatory failure. The latter is detected by abnormal blood pressure responses to the Valsalva maneuver and can be associated with loss of functional cardiac sympathetic nerve terminals. OBJECTIVE: To determine the frequency of cardiac sympathetic denervation in Parkinson disease, with or without sympathetic neurocirculatory failure, and its association with disease duration, severity, and L-dopa treatment DESIGN: Intergroup comparisons in resting patients...
September 5, 2000: Annals of Internal Medicine
https://read.qxmd.com/read/10735340/essentials-of-the-diagnosis-of-heart-failure
#24
REVIEW
F Shamsham, J Mitchell
Although heart failure is a common clinical syndrome, especially in the elderly, its diagnosis is often missed. A detailed clinical history is crucial and should address not only current signs and symptoms of heart failure but also signs and symptoms that point to a specific cause of the syndrome, such as coronary artery disease, hypertension or valvular heart disease. It is important to determine whether the patient has had a previous cardiac event, in particular a myocardial infarction. The physical examination should include Valsalva's maneuver, a test that is highly specific and sensitive for the detection of left ventricular systolic and diastolic dysfunction in patients with heart failure...
March 1, 2000: American Family Physician
https://read.qxmd.com/read/10728953/impact-of-left-ventricular-diastolic-dysfunction-on-maximal-treadmill-performance-in-normotensive-subjects-with-well-controlled-type-2-diabetes-mellitus
#25
COMPARATIVE STUDY
P Poirier, C Garneau, P Bogaty, A Nadeau, L Marois, C Brochu, C Gingras, C Fortin, J Jobin, J G Dumesnil
Patients with type 2 diabetes often have impaired exercise capacity compared with nondiabetic subjects. Left ventricular (LV) diastolic dysfunction has been shown to limit exercise performance in nondiabetic subjects. Men with well-controlled type 2 diabetes were divided into 2 groups: normal LV diastolic function (group 1, n = 9) or LV diastolic dysfunction (group 2, n = 10) based on standard echocardiographic criteria using pulmonary veins and transmitral flow recordings. They were matched for age and had no evidence of systemic hypertension, macroalbuminuria, coronary artery disease, congestive heart failure, clinical diabetic complications, and thyroid disease...
February 15, 2000: American Journal of Cardiology
https://read.qxmd.com/read/10451233/decreased-baroreflex-sensitivity-assessed-from-phase-iv-of-valsalva-maneuver-in-mild-congestive-heart-failure
#26
COMPARATIVE STUDY
C Rostagno, M Felici, S Caciolli, G Olivo, M Comeglio, G Galanti, G G Serneri
Decreased sensitivity of cardiopulmonary and arterial baroreceptors has been hypothesized to sustain sympathetic activation in patients with heart failure. In the present investigation the relationship between the impairment of baroreflex sensitivity and clinical severity of congestive heart failure was investigated. The authors studied 58 patients with heart failure (14 in NYHA class I, 22 in NYHA class II, and 22 in NYHA class III), 38 women and 20 men, age range 28-65 years. Thirty-two patients suffered from idiopathic dilated cardiomyopathy and 26 from coronary heart disease...
August 1999: Angiology
https://read.qxmd.com/read/9927007/acute-responses-to-resistance-training-and-safety
#27
REVIEW
N McCartney
Resistance training is widely used in fitness programs for healthy individuals of all ages and has become accepted as part of the exercise rehabilitation process for patients with coronary artery disease. It is only during the past decade that the acute circulatory responses to resistance exercise have been investigated directly, using intra-arterial measurement techniques and two-dimensional echocardiography. This review examines the factors that influence the acute circulatory responses to resistance training...
January 1999: Medicine and Science in Sports and Exercise
https://read.qxmd.com/read/9613801/baroreceptor-sensitivity-response-to-phase-iv-of-the-valsalva-maneuver-in-spinal-cord-injury
#28
JOURNAL ARTICLE
D R Grimm, P L Almenoff, W A Bauman, R E De Meersman
Due to the increased prevalence of ischemic heart disease and hypertension reported in individuals with chronic spinal cord injury (SCI), we investigated whether subjects with low level SCI (paraplegia), without apparent evidence of coronary artery disease, exhibit normal baroreceptor and autonomic function. Eighteen males participated in this study: seven normotensive with paraplegia, five hypertensive with paraplegia and six normotensive non-SCI controls. The Valsalva maneuver was performed by maintaining a pressure of 40 mmHg over 15 s and R-R intervals (RRI) and arterial blood pressure were measured continuously...
April 1998: Clinical Autonomic Research: Official Journal of the Clinical Autonomic Research Society
https://read.qxmd.com/read/9576151/relation-of-heart-rate-variability-and-serum-lipoproteins-in-type-1-diabetes-mellitus-and-chronic-stable-angina-pectoris
#29
RANDOMIZED CONTROLLED TRIAL
A J Burger, A W Hamer, L A Weinrauch, J A D'Elia
This investigation examines whether serum lipoprotein levels in patients with diabetes mellitus and in those with coronary artery disease are associated with lower heart rate variability (HRV). The study group consisted of 58 subjects divided into 3 groups: normal subjects, chronic stable angina, and type 1 diabetes. Twenty-four-hour ambulatory electrocardiographic recordings were analyzed in the time and frequency domains; standard instantaneous autonomic testing was also performed. On 24-hour ambulatory recordings, patients with chronic stable angina had significantly lower HRV than normals, and diabetics had a more marked reduction in HRV than both normals and anginal patients...
April 15, 1998: American Journal of Cardiology
https://read.qxmd.com/read/9403562/on-line-synthesis-of-the-human-ascending-aortic-pressure-pulse-from-the-finger-pulse
#30
JOURNAL ARTICLE
M Karamanoglu, M P Feneley
Although systolic pressure in the ascending aorta (AA) can be determined accurately from the radial arterial waveform using a single generalized transfer function (TF) of the upper limb, a better on-line methods is needed for accurate noninvasive synthesis of the AA pressure contour to characterize left ventricular contractile function and ventricular-vascular coupling. AA, tonometric carotid (CA), and photoplethysmographic finger (FA) arterial pressure waveforms were recorded in 12 subjects (10 male, aged 59...
December 1997: Hypertension
https://read.qxmd.com/read/8299635/valsalva-manoeuvre-in-the-assessment-of-baroreflex-sensitivity-in-patients-with-coronary-artery-disease
#31
COMPARATIVE STUDY
K E Airaksinen, J E Hartikainen, M J Niemelä, H V Huikuri, H M Mussalo, K U Tahvanainen
The overshoot rise in arterial pressure after release of Valsalva strain is a natural challenge for baroreflex regulation of heart rate. To assess the feasibility of the Valsalva manoeuvre in the determination of baroreflex sensitivity (BRS), we measured the slope of the linear relationship between the length of the RR interval and preceding systolic blood pressure value during the overshoot phase after the strain and compared this index of BRS to a standard phenylephrine test in 64 subjects, of whom 58 had coronary artery disease...
November 1993: European Heart Journal
https://read.qxmd.com/read/8227802/silent-myocardial-ischemia-role-of-subclinical-neuropathy-in-patients-with-and-without-diabetes
#32
COMPARATIVE STUDY
B Marchant, V Umachandran, R Stevenson, P G Kopelman, A D Timmis
OBJECTIVES: Silent myocardial ischemia is common in patients with diabetes. This study was designed to assess the role of subclinical autonomic impairment in diabetic patients with silent ischemia. BACKGROUND: Studies have suggested that silent ischemia is more common in diabetic patients with microvascular complications, but this has not been a consistent finding. METHODS: Twenty-two diabetic and 30 nondiabetic patients with proved coronary artery disease and a history of angina and ischemia on treadmill stress testing underwent clinical tests of autonomic function and measurement of 24-h heart rate variability...
November 1, 1993: Journal of the American College of Cardiology
https://read.qxmd.com/read/7842591/induced-right-to-left-cardiac-shunt-during-pulmonary-perfusion-imaging
#33
JOURNAL ARTICLE
J H Rees, J J Sziklas, R P Spencer, G Chalasani
Ventilation-perfusion lung scans are routinely performed using Tc-99m labeled MAA particles administered intravenously which are subsequently trapped in the pulmonary artery capillary bed. In the presence of a right-to-left shunt, activity may be seen in the systemic circulation. Right-to-left shunts may be worsened by inducing hypoxemia which causes pulmonary artery constriction, and also by increasing venous return to the heart. In this case, the authors used various maneuvers to increase right-to-left shunting and thereby demonstrated the presence of fixed pulmonary hypertension...
November 1994: Clinical Nuclear Medicine
https://read.qxmd.com/read/7835362/effect-of-beta-blockade-on-baroreflex-sensitivity-and-cardiovascular-autonomic-function-tests-in-patients-with-coronary-artery-disease
#34
RANDOMIZED CONTROLLED TRIAL
K E Airaksinen, M J Niemelä, H V Huikuri
We wished to assess the effects of beta-blockade on baroreflex sensitivity and standard tests of integrity of autonomic nervous function in patients with coronary artery disease, and to determine whether the effects of lipophilic (metoprolol) and hydrophilic (atenolol) beta-blockers differ. Beta-blocking drugs increase spontaneous heart rate variability in healthy subjects and in patients with coronary heart disease, but little is known about their effects on baroreflex sensitivity and heart-rate based tests of autonomic integrity...
November 1994: European Heart Journal
https://read.qxmd.com/read/7771851/intercostal-lung-hernia-subsequent-to-harvesting-of-the-left-internal-mammary-artery
#35
JOURNAL ARTICLE
E R La Hei, C W Deal
We report a case of an intercostal lung hernia developing subsequent to harvesting of the left internal mammary artery. Intercostal lung hernia is extremely rare, with most cases reported after blunt thoracic trauma. In the absence of symptoms, this was treated conservatively.
June 1995: Annals of Thoracic Surgery
https://read.qxmd.com/read/7308647/-influence-of-left-ventricular-volume-changes-induced-by-valsalva-maneuver-on-r-wave-amplitude-author-s-transl
#36
JOURNAL ARTICLE
S Cuomo, C Vigorito, L De Caprio, S Maione, A Giunta, C Serino, M Romano, F Rengo
Exercise-induced changes of R wave amplitude (delta R) during exercise has been employed to improve the reliability of stress testing in detecting patients with coronary artery disease. Several authors postulated that delta R are related to changes of ventricular volumes. Furthermore Valsalva Maneuver (VM) is able to induce a decrease of left ventricular volumes induced by VM and the variations of R wave. Echocardiographic method was used to determine left ventricular volumes and R wave amplitude changes were evaluated by Frank's lead...
1981: Giornale Italiano di Cardiologia
https://read.qxmd.com/read/7152346/-clinico-experimental-study-of-the-effect-of-intrathoracic-pressure-on-the-blood-flow-in-the-vessels-of-the-greater-and-lesser-circulation
#37
JOURNAL ARTICLE
I I Sivkov, N S Chebyshev, V A Sakharov, V V Goloma, Iu Ia Demchenkov, V P Nevzorov
No abstract text is available yet for this article.
November 1982: Grudnaia Khirurgiia
https://read.qxmd.com/read/6339104/coronary-arterial-spasm-in-ischemic-heart-disease-and-its-pathogenesis-a-review
#38
REVIEW
H Yasue, S Omote, A Takizawa, M Nagao
Coronary arterial spasm plays an important role iun the production not only of variant angina but, also, of resting angina other than variant angina, of some exertional angina, and of some acute myocardial infarction. Coronary arterial spasm is most likely to occur at rest, particularly from midnight to early morning, and is usually not provoked by exercise in the daytime. This is related to the fact that the tone of coronary artery is increased from midnight to early morning, whereas it is decreased in the daytime after physical activities...
February 1983: Circulation Research
https://read.qxmd.com/read/6114803/production-of-left-ventricular-cavitary-obliteration-in-normal-man
#39
COMPARATIVE STUDY
R Grose, C Maskin, H Spindola-Franco, T Yipintsoi
To determine whether left ventricular cavitary obliteration (a finding previously described only in hypertrophic states) can be induced in normal subjects, 16 patients without coronary artery disease or clinical evidence of hypertrophic obstructive cardiomyopathy were studied during cardiac catheterization. Resting left ventricular and aortic pressures and left ventriculography were repeated during the strain phase of Valsalva maneuver after administration of amyl nitrite. Cavitary obliteration during normal sinus rhythm was defined as disappearance of the sinus portion of the left ventricle during systole, and graded as absent, partial or total...
September 1981: Circulation
https://read.qxmd.com/read/5452939/measurement-of-phasic-carotid-artery-flow-velocity-in-man
#40
JOURNAL ARTICLE
A Benchimol, E C Barreto, M R Goldstein, J L Gartlan
No abstract text is available yet for this article.
August 1970: American Journal of Medicine
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