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  3. 13. To Determine the Diagnostic Accuracy of 12 Lead ECG For Detection of Posterior Myocardial Infarction Keeping 15 Lead ECG as Gold Standards
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13. To Determine the Diagnostic Accuracy of 12 Lead ECG For Detection of Posterior Myocardial Infarction Keeping 15 Lead ECG as Gold Standards

Mushtaq Ahmad, Noorul Hadi, Shah Wali, Abdul Wali, Tajender

ABSTRACT

Objective: Predictive value of 12 lead ECG in the diagnosis of posterior myocardial infarction keeping 15 lead ECG as a gold standard.

Study Design: Cross Sectional Study

Place and Duration of Study: This study was conducted at the Department of Cardiology MTI Mardan Medical Complex, Mardan from February 2016 to August 2016.

Materials and Methods: Study was conducted in patients presenting with ST Segment elevation Myocardial Infarction.All patients meeting the inclusion criteria were enrolled in the study through OPD/ER department and were admitted in the ward for further evaluation. Patients were quickly evaluated by history and clinical examination and then immediately subjected to 12 lead ECG to detect the posterior MI. Immediately after completing the 12 lead ECG, additional 3 posterior leads were applied to detect posterior MI on 15 lead ECG.Data was entered on a well prepared proforma and SPSS Version 21 was used for analysis of data.

Results: In this study, 165 patients were observed in which mean age was 62 years with standard deviation ± 1.33. 53% percent of the patients were male while 47% patients were female. Posterior myocardial infraction on 15 lead ECG among 165 patients was detected in 25(15%) patients and was not detected in 140(85%) patients.

Posterior myocardial infraction on 12 lead ECG among 165 patients was detected in 17(10%) patients and undetected in 148(90%) patients. Diagnostic accuracy of posterior myocardial infraction on 12 lead ECG, keeping 15 lead ECG as gold standard, had Sensitivity=60%, Specificity = 98.57%, Positive predictive value= 88.24%, Negative predictive value = 93.24%, and Diagnostic Accuracy 92.72%.

Conclusion: Our study concludes that the diagnostic accuracy of posterior myocardial infraction on 12 lead ECG was 92.72%. with sensitivity= 60.00%, specificity = 98.57%, positive predictive value= 88.24% and negative predictive value = 93.24%.

Key Words: Diagnostic Accuracy, 12 lead ECG, posterior myocardial infarction, 15 lead ECG

Citation of articles: Ahmad M, Hadi N, Wali S, Wali A, Tajender. To Determine the Diagnostic Accuracy of 12 Lead ECG For Detection of Posterior Myocardial Infarction Keeping 15 Lead ECG as Gold Standards. Med Forum 2018;29(11):48-51.