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[Disproportionately high left ventricular myocardial mass in patients with arterial hypertension]
Insights
Disproportionately high left ventricular mass (DH MMLV) is common in patients with uncontrolled hypertension. This condition is linked to metabolic issues and subclinical heart problems.
Area of Science:
- Cardiology
- Hypertension Research
- Echocardiography
Background:
- Elevated arterial pressure can cause disproportionately high left ventricular mass (DH MMLV), a form of hypertrophy resistant to treatment.
- This study investigates the prevalence and associated factors of DH MMLV in hypertensive patients.
Purpose of the Study:
- To determine the frequency of DH MMLV in patients with arterial hypertension (AH).
- To identify factors associated with DH MMLV in this population.
Main Methods:
- Assessed 170 patients with untreated or irregularly treated AH.
- Calculated the coefficient of disproportionality (CD) using actual to expected MMLV ratios.
Main Results:
- DH MMLV was observed in 82.4% of patients; LVH was only present in those with DH MMLV.
- LVH frequency increased with the degree of MMLV disproportionality (18.9% to 82.2%).
- DH MMLV correlated with higher BMI, metabolic disturbances, concentric LV geometry, and diastolic dysfunction.
Conclusions:
- DH MMLV is prevalent in uncontrolled hypertensive patients.
- Assessing MMLV disproportionality offers additional insight into myocardial morphofunctional status.
- DH MMLV is associated with subclinical cardiac issues and adverse metabolic changes.
Background:
Increase of myocardial mass of left ventricle (MMLV) to a greater extent than required by hemodynamic load by elevated arterial pressure (AP) is reflected in concepts of " disproportionately " high (DH) MMLV and resistant to antihypertensive treatment LV hypertrophy (LVH).
Aim:
To study in patients with arterial hypertension (AH) frequency of DH MMLV and factors associated with it.
Material And Methods:
Patients (n=170, 70 men, age 57.6+/-5.9 years) with previously untreated or irregularly treated uncontrollable AH. Proportionality of MMLV was assessed by coefficient of disproportionality (CD) defined as ratio of actual to expected MMLV.
Results:
DH MMLV was found in 140 patients (82.4%). Frequency of ECHOCG LVH among patients with DH MMLV was 49.3%. There were no cases of LVH among patients with proportional MMLV. Frequency of LVH depended on severity of disproportionality of MMLV elevation and was 18.9% at CD 128-155.9% and 82.2% at CD 184%. Patients with DH MMLV were characterized by greater body mass index, higher rate of disturbances of carbohydrate and lipid metabolism. Patients with DH MMLV without compared with those with LVH were characterized by significantly higher rate of concentric variant of LV geometry (66.2 vs 40.6%, p<0.05) and diastolic dysfunction (57.7 vs 36.2%, p<0.05), lower values of parameters of systolic LV function and higher rate of combination of concentric remodelling and diastolic LV dysfunction.
Conclusion:
DH MMLV is frequent among patients with previously untreated or irregularly treated uncontrollable AH. Calculation of disproportionality of MMLV allows to give additional characteristic of morphofunctional state of the myocardium in patients with AH. DH MMLV is associated with complex of subclinical structurally-functional disturbances of the myocardium and unfavourable changes of carbohydrate and lipid metabolism.
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