Innervation of the human cardiac conduction system at birth.
نویسندگان
چکیده
منابع مشابه
Innervation of the human cardiac conduction system at birth.
OBJECTIVE To study the pattern of innervation of the conduction system of the neonatal heart in humans. DESIGN A prospective analysis based on immunohistochemical and enzyme histochemical examination of newborn human hearts. SETTING A general district hospital. MAIN OUTCOME MEASURES Fresh necropsy tissue. MATERIAL Hearts of three neonatal humans with no cardiac anomaly, freshly taken at...
متن کاملInnervation of the human cardiac conduction system. A quantitative immunohistochemical and histochemical study.
BACKGROUND Cardiac conduction is influenced by peptidergic mechanisms as well as classic neurotransmitters. The distribution of peptide-containing nerves has not been well defined. METHODS AND RESULTS Immunofluorescence and histochemical techniques were used to visualize the innervation of the human conduction system and to distinguish nerve subpopulations according to their peptide and enzym...
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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 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...
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ژورنال
عنوان ژورنال: Heart
سال: 1993
ISSN: 1355-6037
DOI: 10.1136/hrt.69.5.430