ventricular pacemaker

ventricular pacemaker

Single chamber pacemaker Cardiology A pacemaker with formal mode designations of VVIR–ventricular pacing, ventricular sensing, inhibition response, rate-adaptive. See PSE. Cf Dual chamber.
References in periodicals archive ?
Naccarelli, "Subacute right ventricular pacemaker lead perforation: often talked about in consent forms but very rarely seen," Journal of Innovations in Cardiac Rhythm Management, vol.
However, third-degree atrioventricular (AV) block developed during the procedure necessitating in brief cardiopulmonary resuscitation and the insertion of a temporary ventricular pacemaker (VVI pacing mode, set frequency 80/min).
"Leadless pacing technology is a critical advancement for patients in need of a single-chamber ventricular pacemaker, and we are optimistic that today's discussion is an important step toward offering patients leadless pacing technology in the United States."
A 12-lead electrocardiograph (Figure 1) showed atrial fibrillation with ventricular pacemaker spikes associated with right bundle-branch block, rather than the typical pattern of left bundle-branch block.
Scenario: A 68-year-old woman with a ventricular pacemaker was admitted to the telemetry unit for exacerbation of congestive heart failure.
A transesophageal echocardiogram showed thickening of the left coronary aortic valve, and thrombotic material was seen on the ventricular pacemaker lead.
Studying new treatments such as the ventricular pacemaker is very important, if we are to provide some relief and improve the lives of people with CHF."
Cardiac rhythm management devices (including implantable defibrillators and bi ventricular pacemakers) are used to manage heart rhythm problems such as bradycardia and tachycardia.
Graded exercise stress testing to further define risk is not effective in many patient populations: including some women, patients with mobility problems, and patients with underlying conduction issues such as pre-excitation syndromes, left bundle branch blocks, and ventricular pacemakers. Stress echocardiography is a reasonable alternative for such patients.
Ventricular pacemakers placed in the left and right ventricles in patients with bundle branch block and a QRS interval greater than 140 milliseconds have been shown to reorganize that ventricular contractility.
As may be anticipated, patients with single-chamber ventricular pacemakers are most at risk--particularly those patients with intact ventriculoatrial conduction (when atria and ventricles contract together).

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