A STUDY OF LEFT VENTRICULAR DIASTOLIC DYSFUNCTION IN PRIMARY HYPERTENSION –EVALUATION BY DOPPLER ECHOCARDIOGRAPHY

Dr.P.Sudhakar; Dr.M.Maheswara Reddy; Dr.K.Naveen Kumar

Volume : VIII, Issue : I, January - 2018

A STUDY OF LEFT VENTRICULAR DIASTOLIC DYSFUNCTION IN PRIMARY HYPERTENSION –EVALUATION BY DOPPLER ECHOCARDIOGRAPHY

Dr. P. Sudhakar, Dr. M. Maheswara Reddy, Dr. K. Naveen Kumar

Abstract :

Background: Heart failure is a clinical syndrome characterized by symptoms and signs of increased tissue/organ water and decreased tissue/organ perfusion. Diastolic heart failure is a clinical syndrome characterized by the symptoms and signs of heart failure, a preserved ejection fraction (EF), and abnormal diastolic function Abnormalities in diastolic function can occur in the presence or absence of a clinical syndrome of heart failure and with normal or abnormal systolic function. Therefore, whereas Diastolic Dysfunction describes an abnormal mechanical property, diastolic heart failure describes a clinical syndrome.

Aims &Objectives:

1) To evaluate significance of left ventricular diastolic dysfunction in essential hypertension.

2) To find out early left ventricular diastolic dysfunction in essential hypertension as a marker of impending major cardiac events and to promote the quality of life.

3) To evaluate application of Doppler echocardiography in determining left ventricular diastolic dysfunction in essential hypertension.

Materials and Methods:

75 patients of primary hypertension admitted to Govt. General Hospital during April 2014 to September 2015 were studied.

Results: The left ventricular filling studies by Doppler echocardiography done in study and control population were analysed and the results are as follows. In our study, patients with hypertension, There were 53 (70%) males and 22 (30%) females in this study. E–velocity (cm/sec) was reduced in study group compared to control group, A–velocity (cms/sec) was increased in study group compared to control, E/A ratio was reduced in study group compared to controls, LVI Diastolic Dysfunction (mm) did not change in the study group compared to controls, Ejection fraction percentage in study group was decreased compared to controls.

Conclusion: This study suggests that in the early stages of hypertensive heart disease, before there is a detectable increase in left ventricular chamber size, sustained elevation of blood pressure is associated with abnormal left ventricular filling despite normal systolic function, as was also noted in Framingham and Rovner studies. However, compared to radionuclide and catheterization studies, Doppler echo cardiographic method is faster, safer, non–invasive, more economical study can be done bedside without any risks to the patient which are inherent with radionuclide and catheterization techniques.