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KMID : 0882419930450010038
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Korean Journal of Medicine
1993 Volume.45 No. 1 p.38 ~ p.44
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The Correlation between 24-hour Ambulatory Blood Pressure and Echocardiographic LH in Hypertension
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김상욱
유재격/김현대/이은우/이성윤/박승호/류왕성/유언호
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Abstract
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ackground : 24-hour noninvasive ambulatory blood pressure monitoring (ABPM) has been
shown to be superior to casual BP in predicting target organ involvement in patients with
hypertension and assessing antihypertensive therapy. This study was done to examine the
relation of BP decline from day to night to the echocardiographic paramerters of left
ventriculer anatomy in unselected hypertensive patients and normotensive subjects undergoing
24-hour noninvasive ABPM.
Methods : The effect of variation of blood pressure on the echocardiographic parameters of
left ventricular hypertrophy were investigated in 71 consecutive subjects. (47 patients with
essential hypertension and 24 healthy normotensive subjects). 24-hour noninvasive ambulatory
blood pressure monitoring and crosssectional and M-made echocardiography were done to
examine the relation between ABPM and echocardiographic LVH.
Results : 24-hour ambulatory blood pressure was lower than casual blood pressure, and
weak relation was noted particularly in patients with mild-to-moderate hypertension. The
continuous monitoring of BP throughout day shows characteristic circadian pattern. The
highest BP was recorded at 10 am and lowest value was at 2 am∼4 am. Ambulatory
daytime blood pressure (6 am∼8 pm) was higher 15% than night-time blood pressure (8 pm
∼6 am). The correlation coefficient of daytime systolic blood pressure was r=0.42 (p<0.01),
twenty-four hours systolic BP was r=0.41 (p<0.05). The daytime and 24 hours systolic BP
seem to be more closely related to LVH than night-time BP, but the correlation was not high
enough in our study.
Conclusion : 24-hour ambulatory blood pressure monitoring is more useful than casual BP
in patients with hypertension, and LVH in echocardiography is more closely related to
daytime 24 hours systolic BP than night-time BP.
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KEYWORD
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