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  • Title: [Sinus node in patients with atrioventricular and interventricular blocks. Electrophysiologic evaluation].
    Author: Kaźmierczak J, Kornacewicz-Jach Z, Gil R.
    Journal: Kardiol Pol; 1992 Dec; 37(12):369-74. PubMed ID: 1293345.
    Abstract:
    To assess the function of the sino-atrial node, electrophysiological study with pharmacological autonomic blockade was performed in 3 groups of patients: group I with a-v III zero or II zero type 2 heart block, group II with bifascicular interventricular blocks and group III-controls. Sino-atrial node electrogram was recorded in 81% of patients. Obtained results show, that sino-atrial node dysfunction is uncommon in patients with atrioventricular or interventricular blocks (8.6% and 15% respectively). Electrophysiological assessment of sino-atrial node function seems to be important in the consideration of patients with a-v or interventricular blocks for appropriate type of permanent pacing.
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