PubMed Health⌕ Search
Home/Archive/PubMed

PubMed · 6386970

Transcutaneous cardiac pacing.

W Dalsey·S Syverud·A Trott
View original source ↗Export metadata ↓

Abstract

Transvenous cardiac pacing is currently the pacing procedure of choice in patients with severe, life-threatening bradyarrhythmias that do not respond to pharmacotherapy. However, pacing catheters can be difficult to insert and frequently fail to capture in severely hypotensive patients. Therefore, there has been a recent resurgence of interest in external pacing methods. Newer transcutaneous cardiac pacing units are easy to apply and especially suited for unconscious patients with severe, life-threatening bradyarrhythmias. There is no operator danger and, if need be, cardiopulmonary resuscitation can continue while the electrodes are in place and the unit is operating. Human and animal studies to date have shown that there are no significant short-term clinical hazards or pathologic abnormalities when using this technique.

Explore related subjects

BradycardiaElectrodesElectroencephalographyEmergenciesHeart ArrestHumansPacemaker, ArtificialJournal Article

Keep this discovery

Explore connections, maps & timelines

BibTeXRIS

W Dalsey, S Syverud, A Trott. 1984. Transcutaneous cardiac pacing.. https://doi.org/10.1016/0736-4679(84)90072-6

Cite the original work for its findings. Save a collection to share your selection of sources.

KEEP EXPLORING

Related citations

PubMed2007

Sarcoidosis presenting with tachy- and brady-arrhythmias.

We describe a case report of a 49-year-old man admitted to a cardiology unit with a series of arrhythmias with no initially obvious aetiology. Further assessment and the use of cardiac magnetic resonance imaging and histology allowed a diagnosis of cardiac sarcoidosis to be made. Cardiac sarcoidosis is a major cause of death in patients with systemic sarcoidosis. Cardiac magnetic resonance imaging is an additional diagnostic tool for this condition without ionizing radiation exposure.

Bradycardia↗
PubMed2007

Non-sinus bradyarrhythmias in very low birth weight infants.

Transient bradycardias occur frequently in preterm infants with apnea of prematurity. However, occurrence of non-sinus bradyarrhythmias in very low birth weight (VLBW) infants has received very little attention. This case series documents transient bradyarrhythmias in VLBW infants. Most frequently observed arrhythmia was a non-sinus atrial rhythm followed by junctional escape rhythm. Ventricular rhythm with wide QRS complexes occurred rarely. The majority of these episodes occurred in the absence of oxygen desaturation. Increase in vagal tone is presumed to mediate this response.

Bradycardia↗
PubMed2007

QT interval correction in patients with cirrhosis.

INTRODUCTION: QT interval prolongation is a common electrophysiological abnormality in patients with cirrhosis. As QT interval varies with the heart rate, many QT correction formulas have been proposed, the Bazett's one being the most criticized because it over-corrects the QT interval and may be misleading. This study focused on the QT-RR relationship in patients with cirrhosis to derive a population-specific QT correction formula. METHODS: One hundred cirrhotic patients of different etiology and severity and 53 healthy controls comparable for age and sex were enrolled. The QT-RR relationship was analyzed in patients by five regression analysis models to derive the population-specific QT-RR equation. The QTc was calculated and compared with those calculated by four common QT correction formulas (Bazett, Fridericia, Framingham, and Hodges). The correlation coefficient QTc-RR was calculated as a measure of the independence of QTc from the original RR interval. RESULTS: In patients the QT-RR relationship was best described by the power equation "QT = 453.65 x RR1/3.02" (R2 = 0.41), similar to the Fridericia's formula. Bazett's formula led to the longest QTc (P < 0.0001), which was still significantly influenced by the RR interval (R = -0.39; P < 0.0001), while the estimated equation led to a QTc value not influenced by RR (R = -0.014). CONCLUSION: Bazett's correction should be avoided in patients with cirrhosis because it still provides a rate-dependent QTc value and might be misleading, particularly when assessing the overall preoperative cardiac risk and the effect of drugs affecting the QT interval. In its place, our formula or that of Fridericia can be confidently employed.

Bradycardia↗