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Journal of IMAB - Annual Proceeding (Scientific Papers)
Publisher: Peytchinski, Gospodin Iliev
ISSN: 1312-773X (Online)
Issue: Volume 15, book 1, 2009
Subject Collection: Medicine
Page: 16 - 18
DOI: 10.5272/jimab.1512009_16
Online date:June 15, 2009
Changes in the left ventricular muscle mass in
adolescents
Lachezar Marinov
Department of Pediatrics
Medical University “Prof. Dr Paraskev Stoyanov”-Varna, Bulgaria
SUMMARY: In the resent short review are presented
some of the main reasons for development of left ventricular hypertrophy
(LVH). LVH is a multifactor condition caused mainly by arterial hypertension
(AH). The changes in the target organs in AH are a function of the levels
of blood pressure (BP) and the duration of the disease. The primary changes
because of Arterial Hypertension (AH), independently to its etiology,
start in the myocardium of the left ventricle (LV), the arterioles and
small arteries of the systemic circulation. The vascular changes in AH
are two types: expression of morphological adaptation to the increased
BP, observed in the early stages – most often spasm, causing the subsequent
changes in the organs, followed by the complications connected with the
increased development of atherosclerosis in different vascular regions
leading to ischemic heart disease, brain-vessel disease, chronic arterial
insufficiency, arrhythmia, sudden death. As a result to the increased
requirements to the myocardium in AH, starts adaptive hypertrophy, which
at the beginning improves the function of the left ventricle. With the
start of the structural changes and remodeling the compensatory abilities
of the LV lower and develop heart insufficiency. The increased LV pressure
and enlarged muscle mass increase the oxygen needs of the myocardium,
which additionally increase the requirements to the coronary blood stream.
Some other additional factors which influence the LVH are discussed like
physical development of the children, overweight and obesity. The diagnostic
abilities of EKG and EchoCG are discussed for the proving of the LVH.
EchoCG and Doppler EchoCG have significantly more abilities, as most informative
index for LVH is the index of left ventricular muscle mass.
Key words: left ventricular hypertrophy, index of left
ventricular muscle mass, adolescents, EchoCG.
Page: 16-18; FULL TEXT PDF (113 KB)