scholarly journals QRS Complex Duration is a Marker of Reperfusion in Patients Presenting with Acute ST Segment Elevation Myocardial Infarction

Author(s):  
Gehan Magdy ◽  
Hesham El Ashmawy ◽  
Kamal Mahmoud ◽  
Asmaa Youssef
2016 ◽  
Vol 11 (1) ◽  
pp. 30-35
Author(s):  
Khandaker Aisha Siddika ◽  
Md Abu Siddique ◽  
Shamim Ahsan ◽  
Arif Hossain ◽  
Sohel Mahmud ◽  
...  

Background: Distorted terminal portion of QRS complex on initial electrocardiogram in ST segment elevation myocardial infarction is a strong predictor of inhospital adverse outcome.Objectives: Our purpose of this study was to analyse admission ECG in patients of STEMI based on terminal portion of QRS complex and find out inhospital death, heart failure, cardiogenic shock and recurrent MI.Methods: We evaluated 60 patients of STEMI admitted within 12 hours and receiving thrombolytic therapy. We defined two ECG groups according to absence of distortion of terminal QRS (Group-I) and presence of distorted terminal QRS (Group-II) in two or more adjacent leads. Group-II further divided into pattern-A – J point originating at ?50% of height of R wave in leads with qR configuration and pattern B- S wave is absent in leads with RS configuration.Results: Out of 60 patients of STEMI, 30(50.0%) patients had distortion of QRS. There were 7(11.6%) deaths, 16(26.7%) heart failure, 3(5.0%) cardigenic shock and no recurrent myocardial infarction. Hospital mortality and heart failure were found to be significantly higher in distorted QRS group (3.3% vs. 20.0%, p=0.04; 13.3% vs. 40.0%, p=0.02; respectively), cardiogenic shock of both groups did not show significant difference (0.0% vs. 10.0%, p=0.075). Multiple logistic regression analysis using hospital mortality as dependable variable and all studied risk factors were independent variables, QRS distortion on admission ECG and Killip class were only variable found to be statistically significant (OR=7.25, p value < 0.05 ; OR=16.25, p value < 0.05 respectively).Conclusion: Careful analysis of ECG which is simple, cheap, universally available bed side investigation may offer important prognostic information in patients with STEMI and would help in deciding which patients should go urgent myocardial revascularization procedure.University Heart Journal Vol. 11, No. 1, January 2015; 30-35


Pharmateca ◽  
2019 ◽  
Vol 9_2019 ◽  
pp. 100-103
Author(s):  
I.G. Gordeev Gordeev ◽  
N.A. Volov Volov ◽  
M.N. Arefiev Arefiev ◽  
R.S. Ilchenko Ilchenko ◽  
◽  
...  

2022 ◽  
Vol 3 (1) ◽  
pp. 01-04
Author(s):  
Yasser Mohammed Hassanain Elsayed

Rationale: The term “fragmentation of the QRS complex” denotes the existence of high-frequency potentials (spikes) in the QRS-complex. It is either a marker for cardiac structural diseases inducing biventricular hypertrophy or any condition interfering with the normally homogeneous depolarization status inside the myocardium. An associated right ventricular infarction with inferior infarction maybe carry a risk impact and serious complications. Patient concerns: A 64-year-old married, farmer, heavy smoker, Egyptian male patient presented with acute severe chest pain and inferior with right ventricular ST-segment elevation myocardial infarction and fragmentation of the QRS complex. Diagnosis: QRS-complex fragmentations and right ventricular infarction in the presence of inferior infarction with the triple-vessels disease. Interventions: Electrocardiography, oxygenation, streptokinase intravenous infusion, echocardiography, and percutaneous transluminal coronary angioplasty. Outcomes: Dramatic response of acute inferior with right ventricular ST-segment elevation myocardial infarction and QRS-complex fragmentations to streptokinase. Lessons: Despite the presence of inferior and right ventricular ST-segment elevation myocardial infarction with QRS-complex fragmentations, but there is no correlation with the severity of the disease. Dramatic clinical and electrocardiographic response signifying the role of streptokinase and fibrinolytic. The presence of fragmentation of the QRS-complex may have a bidirectional impact from seriousness to complications.


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