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Analysis of heart rate variability to assess hemodynamic alterations following induction of anesthesia.

Journal of cardiothoracic and vascular anesthesia

Estafanous FG, Brum JM, Ribeiro MP, Estafanous M, Starr N, Ferrario C.
PMID: 1361865
J Cardiothorac Vasc Anesth. 1992 Dec;6(6):651-7. doi: 10.1016/1053-0770(92)90045-9.

Extensive changes in hemodynamics and cardiac rhythm during induction of anesthesia may be mediated by altered responses of the autonomic nervous system to anesthetic agents. Analysis of the power spectrum of the heart rate (PSHR) variability can supply information...

Patency of foramen ovale--does it influence haemodynamics in newborn infants?.

Early human development

Hannu H, Pentti K, Henrik E, Markku S, Ilkka V.
PMID: 2691234
Early Hum Dev. 1989 Dec;20(3):281-7. doi: 10.1016/0378-3782(89)90013-3.

Colour-coded Doppler ultrasound examination was carried out in 37 healthy newborns at 24 h of age to determine the patency of the foramen ovale. In addition, Doppler-derived cardiac output was measured 5 times during the first 2 days of...

Long-term in vivo study of gas diffusion in bilaminar compliance chambers.

ASAIO transactions

Sakakibara N, Navarro RR, Nasu M, Fujimoto LK, Kiraly RJ, Nosé Y.
PMID: 2512969
ASAIO Trans. 1989 Jul-Sep;35(3):478-80. doi: 10.1097/00002480-198907000-00099.

The problem of gas diffusion from compliance chambers in long-term pulsatile blood pump implantation continues. To evaluate and predict gas diffusion at the intrathoracic tissue interface, eight air-filled static bilaminar compliance chambers were implanted in four calves for a...

Ventricular function during supine bicycle exercise in univentricular connection with absent right atrioventricular connection.

The American journal of cardiology

Akagi T, Benson LN, Green M, De Souza M, Harder JR, Gilday DL, Freedom RM.
PMID: 1709775
Am J Cardiol. 1991 Jun 01;67(15):1273-8. doi: 10.1016/0002-9149(91)90940-m.

Fourteen patients with univentricular connection, absent right connection (tricuspid valve atresia) and normally related great arteries underwent rest and supine bicycle exercise equilibrium radionuclide blood pool studies. Ejection fraction, heart rate, systemic blood pressure and oxygen saturation (ear oximetry)...

Importance of hemodynamic response to therapy in predicting survival with ejection fraction less than or equal to 20% secondary to ischemic or nonischemic dilated cardiomyopathy.

The American journal of cardiology

Stevenson LW, Tillisch JH, Hamilton M, Luu M, Chelimsky-Fallick C, Moriguchi J, Kobashigawa J, Walden J.
PMID: 2244566
Am J Cardiol. 1990 Dec 01;66(19):1348-54. doi: 10.1016/0002-9149(90)91166-4.

To identify patients with left ventricular ejection fractions less than 20% who are likely to survive on tailored medical therapy after referral to transplantation, this study of 152 patients addressed the hypotheses that (1) severely elevated filling pressures initially...

Lack of influence of atrioventricular delay on stroke volume at rest in patients with complete atrioventricular block and dual chamber pacing.

Pacing and clinical electrophysiology : PACE

Occhetta E, Piccinino C, Francalacci G, Magnani A, Bolognese L, Devecchi P, Rognoni G, Rossi P.
PMID: 1695749
Pacing Clin Electrophysiol. 1990 Jul;13(7):916-26. doi: 10.1111/j.1540-8159.1990.tb02129.x.

Dual chamber pacing (DDD) maintains atrioventricular (AV) sequence; AV delay programmability modifies the relationship between atrial and ventricular contraction. To evaluate the hemodynamic effects of such a modification, ten patients with a DDD unit for complete AV block were...

Developmental modulation of myocardial mechanics: age- and growth-related alterations in afterload and contractility.

Journal of the American College of Cardiology

Colan SD, Parness IA, Spevak PJ, Sanders SP.
PMID: 1538019
J Am Coll Cardiol. 1992 Mar 01;19(3):619-29. doi: 10.1016/s0735-1097(10)80282-7.
Free Article

Somatic growth is associated with alterations in myocardial mechanics in children with heart disease and in most animal models of congenital heart disease. However, the effect of age and body size on myocardial contractility and loading conditions in normal...

Isometric exercise testing and echocardiography at rest in aortic valve incompetence.

Nuclear medicine communications

Groundstroem K, Huikuri H, Korhonen U, Ikäheimo M, Heikkilä J, Torniainen P, Linnaluoto M, Takkunen J.
PMID: 2362740
Nucl Med Commun. 1990 Apr;11(4):279-87. doi: 10.1097/00006231-199004000-00004.

Thirty patients with aortic valve incompetence and 21 control subjects were examined by M-mode echocardiography at rest and radionuclide ventriculography during submaximal handgrip exercise. The patients had greater left ventricular dimensions and end-systolic wall stress values but peak systolic...

Comparison of preload recruitable stroke work, end-systolic pressure-volume and dP/dtmax-end-diastolic volume relations as indexes of left ventricular contractile performance in patients undergoing routine cardiac catheterization.

Journal of the American College of Cardiology

Feneley MP, Skelton TN, Kisslo KB, Davis JW, Bashore TM, Rankin JS.
PMID: 1593048
J Am Coll Cardiol. 1992 Jun;19(7):1522-30. doi: 10.1016/0735-1097(92)90613-r.
Free Article

The end-systolic pressure-volume relation, the relation between stroke work and end-diastolic volume, termed the preload recruitable stroke work relation, and the relation between the peak of the first derivative of left ventricular pressure (dP/dtmax) and end-diastolic volume have been...

The contraction of stunned myocardium: isovolumetric bulging and wasted ejection shortening in dog heart.

Cardiovascular research

Chen G, Askenase AD, Chen K, Horowitz LN, Segal BL.
PMID: 1571931
Cardiovasc Res. 1992 Feb;26(2):115-25. doi: 10.1093/cvr/26.2.115.

OBJECTIVE: The aim of the study was to assess the contraction of myocardium stunned by repetitive brief coronary occlusions by examining the response to alterations in loading and inotropy of systolic contraction on isovolumetric and ejection phase shortening.METHODS: Fourteen...

Diurnal variations of cardiac output in healthy young people.

Progress in clinical and biological research

Jin GY, Yang J, Shen YL, Sun GQ, Shi ZD.
PMID: 2217350
Prog Clin Biol Res. 1990;341:613-7.

No abstract available.

Standardized informal exercise testing for programming rate adaptive pacemakers.

Pacing and clinical electrophysiology : PACE

Hayes DL, Von Feldt L, Higano ST.
PMID: 1721173
Pacing Clin Electrophysiol. 1991 Nov;14(11):1772-6. doi: 10.1111/j.1540-8159.1991.tb02764.x.

It is essential that patients with pacemakers capable of rate modulation undergo some form of exercise testing to assure appropriate rate modulation. Informal exercise testing is a reasonable and less expensive alternative to formal treadmill testing. Empiric adjustment of...

Showing 1 to 12 of 11435 entries