摘要:

Dual-chamber pacing has been available since the early 1980s, yet it is a topic with which critical care nurses consistently have difficulty. New advances in pacemaker technology have built on the principles inherent in dual-chamber pacing, making it imperative that practitioners have a basic understanding of dual-chamber pacemaker function. With dwindling clinical resources, the responsibility of the bedside nurse to evaluate appropriate pacemaker function and identify the patient's response to pacemaker therapy has increased

ISSN:1046-7467    

出版商:OVID    

年代:1991

数据来源: OVID

摘要:

Advances in cardiac electrophysiology have clarified some of the mechanisms of tachydysrhythmias and have characterized tachycardias that are amenable to pace termination. Tachydysrhythmias most likely to be terminated by pacing techniques tend to be slow, re-entrant tachycardias. Although single extrastimulation can be effective, its yield is relatively low. Delivery of multiple extrastimuli or burst pacing are more effective than single extrastimulation at the expense of a higher risk of tachycardia acceleration or transformation of the rhythm to fibrillation. The use of pacing for the termination of tachydysrhythmias has primarily been limited to the acute care setting, although permanently implantable antitachycardia pacemakers are being used in increasing numbers. While these devices have been approved by the Food and Drug Administration (FDA) for the treatment of supraventricular tachydysrhythmias, their use to treat ventricular tachydysrhythmias has produced mixed results and remains investigational. In some cases of sustained ventricular tachycardia, automatic cardioverter/defibrillators have been implanted along with antitachycardia pacemakers to provide high-energy shock back-up in case of tachycardia acceleration by the pacemaker. Soon, devices will be available which will combine, in a single unit, antitachycardia pacing and high-energy cardioversion/defibrillation

ISSN:1046-7467    

出版商:OVID    

年代:1991

数据来源: OVID

摘要:

Pacemaker technology continues to advance in the direction of restoring a normal hemodynamic response under varying physiologic conditions. Rate responsive pacemakers meet this challenge by adjusting the pacing rate in response to a sensed physiologic variable other than sinus node activity. In an effort to design the ideal rate-responsive system, various physiologic cues have been tested. To translate shifts in the sensed physiologic indicator into an appropriate pacing rate, specialized sensor systems also have been developed and include mechanical, chemical, thermal, and electrical sensors. Although each sensor system offers advantages and disadvantages, continued research and clinical experience will determine the future of this exciting new form of cardiac pacing

ISSN:1046-7467    

出版商:OVID    

年代:1991

数据来源: OVID

摘要:

Advances in pacemaker technology over the last 25 years have made cardiac pacing in infants and children a safe and practical therapy. Some of the technical challenges encountered with the first permanent pacemaker implantation in children during the early 1960s have been solved with miniaturized generators, lithium batteries, noninvasive programmability, and improved placement techniques.1-3This chapter reports common causes of bradydysrhythmias in children, reviews the indications for permanent pacemaker implantation in children, describes current pacing systems appropriate for children, and identifies nursing implications and potential pacemaker complications unique to children

ISSN:1046-7467    

出版商:OVID    

年代:1991

数据来源: OVID

摘要:

1. Identify the common causes of bradydysrhythmias in children2. List indications for permanent pacemaker implantation in children3. Identify nursing implications and potential pacemaker complications unique to children

ISSN:1046-7467    

出版商:OVID    

年代:1991

数据来源: OVID

摘要:

The interpretation of electronic pacemaker rhythm strips requires attention to detail to determine the appropriate function of a pacemaker. Often the clinician is faced with the admission of a patient who is either unknown to have a pacemaker, or the type of pacemaker is not immediately available to the practitioner. In such a situation, the practitioner must be able to use pre-existing skills to determine the proper function of the pacemaker as well as any abnormalities in its pattern. This evaluation requires review of the inherent or underlying patient rhythm, the presenting pacemaker rhythm, and the relationship of the two. Additionally, in more sophisticated pacemakers, the relationship between the functions of the pacemaker also must be assessed. A variety of pacemaker rhythm examples are used to delineate the process involved in the determination of proper pacemaker function

ISSN:1046-7467    

出版商:OVID    

年代:1991

数据来源: OVID

摘要:

The automatic implantable cardioverter defibrillator (AICD) is becoming the treatment of choice for patients with ventricular tachycardia and ventricular fibrillation. The widespread use of the AICD is requiring nurses in a variety of settings to become familiar with the device and device-patient interactions. This article attempts to define specific issues and nursing interventions relative to the AICD

ISSN:1046-7467    

出版商:OVID    

年代:1991

数据来源: OVID

ISSN:1046-7467    

出版商:OVID    

年代:1991

数据来源: OVID