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: [Characteristics of 24-hour ECG and the regulation of cardiac rhythm in adolescents].
    Author: Makarov LM, Belokon' NA, Belozerov IuM, Kalachanova EP.
    Journal: Kardiologiia; 1990 Feb; 30(2):37-42. PubMed ID: 2348617.
    Abstract:
    Holter 24-hour monitoring was performed in 50 healthy subjects aged 11-15 years. Daily changes and standard values of heart rate (HR), P-R and Q-T intervals, P, R, T wave amplitudes, ST segment displacement were determined. All the patients under study exhibited sinus arrhythmia, pacemaker migration periods, short cardiac rhythm pauses (up to 1.5 s). Three adolescents were recorded to have Degree I atrioventricular block at night, 3 presented with rare (up to 2 per min) supraventricular contraction beats, 1 had a nocturnal transient Wolff-Parkinson-White syndrome. Despite HR at night, there were periods of Q-T interval prolongation. Daily changes in the neurohumoral regulation of the heart and its relation to the occurrence of various electrocardiographic events were determined.
    [Abstract] [Full Text] [Related] [New Search]