Pacing the Human Cardiac Conduction System During Open-heart Surgery
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چکیده
منابع مشابه
Pacing the human cardiac conduction system during open-heart surgery.
Specialized fiber electrograms were recorded from selected sites along the His bundle and bundle branches during open-heart surgery in 26 patients. The heart was then paced from the same recording sites. Stimuli applied to the proximal His bundle recording site always resulted in His bundle pacing, which was characterized by a stimulus artifact-to-QRS interval which equaled or very nearly equal...
متن کاملConduction intervals and conduction velocity in the human cardiac conduction system. Studies during open-heart surgery.
Specialized fiber electrograms were recorded in 64 patients during open-heart surgery. Intervals were measured from the proximal His bundle, distal His bundle, and right and left bundle branches to the earliest QRS deflection in the limb lead ECG (pH-Q, dH-Q, RB-Q, and LB-Q interval, respectively). There was an increase of pH-Q intervals with increasing age such that at age 3 months the normal ...
متن کاملPacing the Human Cardiac Conduction System
Specialized fiber electrograms were recorded from selected sites along the His bundle and bundle branches during open-heart surgery in 26 patients. The heart was then paced from the same recording sites. Stimuli applied to the proximal His bundle recording site always resulted in His bundle pacing, which was characterized by a stimulus artifact-to-QRS interval which equaled or very nearly equal...
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In this paper the duties of an anesthesiologist and his right of i=;electing patient is discussed. La,ter, we di:=:cuss the <::mergencies cf heart surgery, pre up visit and alsc few dcails of pre up medication cf thei,e pati<mts. We also touch on the stages of anesthPsia and point to our preference for the use cf artery and vein for arterial and venous cannulation. In this paper we discuss in b...
متن کاملHeart failure during cardiac pacing.
BACKGROUND Right ventricular apical (RVA) pacing creates abnormal left ventricular contraction, hypertrophy, and reduced pump function. The adverse effects of ventricular desynchronization may explain the association of RVA pacing with an increased risk of heart failure hospitalization (HFH) in clinical trials. METHODS AND RESULTS Baseline and postimplantation variables were used to predict H...
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ژورنال
عنوان ژورنال: Circulation
سال: 1974
ISSN: 0009-7322,1524-4539
DOI: 10.1161/01.cir.50.3.499