Results 11 to 20 of about 1,566,571 (229)

Echocardiographic estimation of acute haemodynamic response during optimization of multisite pace-maker using different pacing modalities and atrioventricular delays [PDF]

open access: yesVojnosanitetski Pregled, 2009
Background/Aim. Cardiac resynchronization therapy (CRT) improves ventricular dyssynchrony and is associated with an improvement in symptoms, quality of life and prognosis in patients with severe heart failure and intraventricular conduction delay ...
Šalinger-Martinović Sonja   +7 more
doaj   +1 more source

Artificial Pacemakers [PDF]

open access: yesCirculation, 1973
The development of artificial pacemakers for the electrical control of the cardiac rhythm has greatly enhanced the physician's ability to treat cardiac dysrhythmias. Pacemakers have been useful in treating Stokes-Adams syndrome and symptomatic bradyeardias; they have helped control the occurrence of tachyarrhythmias and have played an important role in
Henry D. Mcintosh, Kinsman E. Wright
openaire   +3 more sources

Investigating the flow dynamics in the obstructed and stented ureter by means of a biomimetic artificial model. [PDF]

open access: yes, 2014
Double-J stenting is the most common clinical method employed to restore the upper urinary tract drainage, in the presence of a ureteric obstruction. After implant, stents provide an immediate pain relief by decreasing the pressure in the renal pelvis (P)
Carugo, Dario   +5 more
core   +11 more sources

Experimental analysis and computational modeling of interburst intervals in spontaneous activity of cortical neuronal culture [PDF]

open access: yes, 2011
Rhythmic bursting is the most striking behavior of cultured cortical networks and may start in the second week after plating. In this study, we focus on the intervals between spontaneously occurring bursts, and compare experimentally recorded values with
Feber, J. le   +3 more
core   +2 more sources

Early experience with permanent pacemaker implantation at a tertiary hospital in Nigeria

open access: yesThe Pan African Medical Journal, 2020
INTRODUCTION: Artificial pacemakers generate electrical impulses and regulate the heart´s conduction system. They are often used to treat individuals with bradycardia. Permanent pacemaker implantation is a lifesaving procedure especially in patients with
Uvie Ufuoma Onakpoya   +4 more
doaj   +1 more source

The effects of repetitive electric cardiac stimulation in dogs with normal hearts, complete heart block and experimental cardiac arrest [PDF]

open access: yes, 1955
Direct cardiac stimulation was conducted in the open chest. In normal animals, auricular stimulation at frequencies faster than the spontaneous rate caused little change in vascular pressures or cardiac output.
GAERTNER, RA, STARZL, TE, WEBB, RC
core   +1 more source

Ressincronização ventricular: comparando os marcapassos biventriculares com os marcapassos bifocais de ventrículo direito Ventricular resynchronization: comparing biventricular and bifocal right ventricular pacemakers

open access: yesArquivos Brasileiros de Cardiologia, 2007
OBJETIVO: Realizar uma análise da estimulação biventricular convencional (BV), da estimulação bifocal (BF) de ventrículo direito (VD) e uma análise comparativa das duas técnicas, em relação aos parâmetros clínicos, funcionais e ecocardiográficos, em uma ...
Eduardo Arrais Rocha   +10 more
doaj   +1 more source

The Total Artificial Heart and the Dilemma of Deactivation [PDF]

open access: yes, 2016
It is widely believed to be permissible for a physician to discontinue any treatment upon the request of a competent patient. Many also believe it is never permissible for a physician to intentionally kill a patient.
Bronner, Ben
core   +1 more source

Circadian clocks in health and disease: Dissecting the roles of the biological pacemaker in cancer

open access: yesF1000Research, 2023
In modern society, there is a growing population affected by circadian clock disruption through night shift work, artificial light-at-night exposure, and erratic eating patterns.
B. Fortin   +4 more
semanticscholar   +1 more source

Analysis of predictors of sick sinus syndrome after open surgical treatment of atrial fibrillation

open access: yesКардиоСоматика, 2021
Aim. To identify and analyze predictors of the development of sick sinus syndrome in patients with atrial fibrillation. Material and methods. We include 847 patients with paroxysmal (121) and permanent (726) form of atrial fibrillation in our research.
Vadim A. Karnakhin   +3 more
doaj   +1 more source

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