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ANALYSIS OF HEART RATE VARIABILITY IN ANTERIOR AND INFERIOR WALL ST ELEVATION MYOCARDIAL INFARCTION

Dr Saeeda Sadiq, Dr Komal Sajjad, Dr Raheela Rani

Introduction: Heart rate variability (HRV) has been known as a measurable parameter of the cardiac autonomic function. The cardiac autonomic innervation is heterogeneous and hence leads to different patterns of autonomic modulation. Aims and objectives: The main objective of the study is to analyse the heart rate variability in anterior and inferior wall ST elevation myocardial infarction. Material and methods: This cross sectional study was conducted in THQ Hospital, Pindi Ghaib during March 2019 to August 2019. The data was collected from 100 patients of both genders. All patients of anterior and inferior wall ST elevation myocardial infarction only who got thrombolytic therapy with age range 30-60 of both gender were included. Those patients who were not willing, autonomic neuropathy, thyrotoxicosis, hypothyroidism, diabetes mellitus, renal failure, previous history of MI, late presentation (after 24 hrs), cardiogenic shock, or known case of valvular heart disease, ventricular arrhythmia or atrial fibrillation, second or third degree AV nodal block, frequent PVCs (10/min), bigeminy or trigeminy and cerebrovascular accident were excluded. Results: The data was collected from 100 patients of both male and female. Patients with NSTEMI were older than those with STEMI, and presented more often history of hypertension, previous MI and coronary revascularization procedures, and clinical signs of metabolic syndrome. Patients with NSTEMI had greater number of critical coronary stenoses, revascularization was more often incomplete, and such patients presented more often with symptoms of heart failure on initial admission to the coronary care unit. Conclusion: It is concluded that there is no difference among the heart rate variability indices in different type of MI, age group and gender.

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