These tools will no longer be maintained as of December 31, 2024. Archived website can be found here. PubMed4Hh GitHub repository can be found here. Contact NLM Customer Service if you have questions.


Pubmed for Handhelds

PUBMED FOR HANDHELDS

Search MEDLINE/PubMed

  • Title: [Additional right pectoral leads].
    Author: Daskalov M.
    Journal: Vutr Boles; 1980; 19(4):47-56. PubMed ID: 7415160.
    Abstract:
    A total of 476 subjects were examined. The control group was of 220 (170 healthy males and 50 females) and 256 cardiac patients (180 males and 76 females); with right ventricle loading -- 106 (6-70 years), left ventricle - 35 (average age 38), disturbed intraventricular conductivity -- 76, and myocardial infarction -- 39 patients. The additional right pectoral leads (ARPL) -- V3R--V8R are included in the extended ECG programme for investigation (routine 12 ECG leads, left precordial -- V7--V9 and Nehb). In normal cases, the auricular wave P is positive in V3R--V6R, biphasic in V7R--V8R, rarely isoelectric in V8R. The form of ventricular complex in ARPL depends closely on the electric cardiac position. The forms rS are present in horizontal position -- in V3R--V8R; in vertical -- the forms rSin V3R--V5R and qr, Qr in V6R--V8R. In the direction form V3R to V8R, a reduced amplitude of ventricular complex is established. In right ventricular hypertrophy, the characteristic changes in V1--V2 (high R deflection and negative T waves) are more distinctly manifested in V3R--V5R. In advanced cases of chronic pulmonary heart high amplitude qR predominates in V3R--V7R. Contrary to the physiological type syndrome S1S2S3, where no deviations are found in ARPL, in the pathological variety -- pathologically changed ventricular complexes are present. In myocardial infarction of the posterior wall, the presence of high elevation of the segment ST and QS in V3R--V4R is an indication for the involvement of the interventricular septum as well and is a prognostic unfavourable sign.
    [Abstract] [Full Text] [Related] [New Search]