Hypertrophy of a left ventricle
Contents:
Description:
Typical damage of heart at patients with the idiopathic hypertensia (IH) is the hypertrophy of a left ventricle (HLV) which is considered as process of structural adaptation of heart to change of hemodynamic parameters and metabolic requirements of a myocardium.
Symptoms of the Hypertrophy of a left ventricle:
Diagnostic characters of a hypertrophy of a left ventricle:
a) standard leads Deviation of an electrical axis of heart to the left, ∠ α <+5°; RI>10–15 mm;
RII> 20 mm;
RI+SIII> 20 MM;
QRS=0,09–0,11.
Time of intrinsic deflection more than 0,04;
ST depression> 0,5 mm of a kosoniskhodyashchy form;
< 1 мм, TIII>TITI;
b) single-pole assignments
Q(S)avR> 15 mm;
RavL> mm ll;
RavF> 20 mm (at vertical position of heart);
c) chest assignments
Sv1-v2> 15 mm;
transitional zone V 2;
Rv 4> 20 mm;
Rv 5, v 6> Rv 4
Sv 2 + Rv 5.> 30–35 mm (Sokolov-Lyon's index);
kosoniskhodyashchy depression of STv 5, v 6, more than 0,5 mm;
<2мм, R/T>Tv 5, v 6 10.
ECG signs of a hypertrophy of a left ventricle
Reasons of the Hypertrophy of a left ventricle:
The major factors influencing development and progressing of GLZh in patients with AG are: increase in the ABP, exercise stress, activity system renin-angiotenzinovoy, associated diseases of heart, age, body weight, activity of a sympathetic nervous system, sex of the patient.
Treatment of the Hypertrophy of a left ventricle:
The most expressed impact on involution of GLZh is exerted by APF inhibitors. At the same time, in literature there is still only evidence of beneficial effect of medicines of this class on cardiovascular incidence and mortality for people with the raised ABP. It is about research CAPPP in which favorable effects of a single dose of captopril within a day for several years were shown. The research was executed in Scandinavia and is complete in the summer of 1998. At the same time, in the majority of the countries of the world including in Ukraine, captopril for treatment of sick GB is appointed 2 (and sometimes — 3) once a day. The question of whether renders this drug at 2-3-times reception the effects similar to that at single use, remains open and needs further studying.
