Utility of Exercise-Induced ST-Segment Elevation in Lead aVR for Detecting Left Main or Proximal Left Anterior Descending Disease

2021 ◽  
Author(s):  
Vardhmaan Jain ◽  
Subrat Das ◽  
Kirtipal Bhatia ◽  
Devika Aggarwal ◽  
Agam Bansal ◽  
...  
Keyword(s):  
Left Main ◽  
St Segment Elevation ◽  
St Segment ◽  
Lead Avr ◽  
Exercise Induced

scholarly journals Exercise-Induced ST-Segment Elevation in ECG Lead aVR Is a Useful Indicator of Significant Left Main or Ostial LAD Coronary Artery Stenosis

2011 ◽  
Vol 4 (2) ◽  
pp. 176-186 ◽  
Author(s):  
Shanmugam Uthamalingam ◽  
Hui Zheng ◽  
Marcia Leavitt ◽  
Eugene Pomerantsev ◽  
Imad Ahmado ◽  
...  
Keyword(s):  
Coronary Artery ◽  
Coronary Artery Stenosis ◽  
Artery Stenosis ◽  
Left Main ◽  
St Segment Elevation ◽  
St Segment ◽  
Lead Avr ◽  
Exercise Induced

VALUE OF ST-SEGMENT ELEVATION IN LEAD AVR IN PREDICTING LEFT MAIN AND OR 3-VESSEL DISEASE IN PATIENTS WITH ACUTE CORONARY SYNDROMES

2017 ◽  
pp. 59-63
Author(s):  
Thanh Hung Dieu ◽  
Anh Vu Nguyen
Keyword(s):  
Predictive Value ◽  
Acute Coronary Syndromes ◽  
Independent Predictor ◽  
Left Main ◽  
St Segment Elevation ◽  
Vessel Disease ◽  
St Segment ◽  
Coronary Syndromes ◽  
Lead Avr ◽  
Sensitivity Specificity

Objects: We assessed the ability of ST-segment elevation in lead aVR to predict left main and/or 3-vessel disease (LM/3VD) in patients with acute coronary syndromes (ACS). Meterial and Method: 410 patients with ACS, who underwent coronary angiography, were evaluated. Results: 131 (31.9%) patients have been LM/3VD. ST segment elevation > 0.05 mV in leads aVR have been an independent predictor LM/3VD with sensitivity, specificity, positive predictive value PPV) and negative predictive value (NPV) 74.0%, 78.1%, 61.4% and 86.5%, respectively (p<0.001). ST segment elevation > 0.05 mV in leads aVR with ST segment depression in leads V4-V6 have related LM/3VD with sensitivity, specificity, PPV and NPV 44.3%, 92.8%, 74.4% and 75.2%, respectively (p<0.001). ST segment elevation > 0.1 mV in leads aVR have related LM/3VD with sensitivity, specificity, PPV and NPV 51.9%, 87.1%, 65.1% and 79.4%, respectively (p<0.001). Conclusions: ST segment elevation > 0.05 mV in leads aVR have been an independent predictor LM/3VD in patients with ACS. Key words: Acute coronary syndromes, ST-segment elevation, aVR

scholarly journals TCT-388 Does ST Segment Elevation in Lead aVR Correlate with Left Main Occlusion?

2017 ◽  
Vol 70 (18) ◽  
pp. B159
Author(s):  
Ahmed Harhash ◽  
Sridhar Reddy ◽  
Jennifer Huang-Tsang ◽  
Balaji Natarajan ◽  
Mahesh Balakrishnan ◽  
...  
Keyword(s):  
Left Main ◽  
St Segment Elevation ◽  
St Segment ◽  
Lead Avr

scholarly journals Prediction of Left Main Coronary Artery Occlusion by ST Segment Elevation in Lead aVR Greater than that in Lead V1 in Acute Coronary Syndrome

2017 ◽  
Vol 9 (2) ◽  
pp. 77-82
Author(s):  
Abdul Azeez Ahemd ◽  
Mahboob Ali ◽  
Abdullah Al Shafi Majumder ◽  
M Atahar Ali ◽  
Md Shafiqur Rahman Patwary ◽  
...  
Keyword(s):  
Coronary Artery ◽  
Left Main Coronary Artery ◽  
Left Ventricular ◽  
Left Main ◽  
Predictive Values ◽  
St Segment Elevation ◽  
Coronary Syndrome ◽  
Group I ◽  
St Segment ◽  
Lead Avr

Background: The electrocardiogram (ECG) predicting an acute obstruction of the LMCA, which requires immediate aggressive treatment, is very important for early diagnosis. We correlated ST segment elevation in lead aVR greater than that in lead V• with coronary angiographic diagnosis of LMCA occlusion in patients with acute coronary syndrome.Methods: Cross sectional analytical study was conducted in the Department of Cardiology, National Institute of Cardiovascular Diseases (NICVD), Dhaka, Bangladesh from August 2011 to July 2012. Total 90 patients were included purposively. Study population was divided into two groups. Group I- Patients with ST segment elevation in aVR greater than ST segment elevation in V• (n=45) and group II- Patients with ST segment elevation in aVR less than that in lead V• (n=45). In hospital outcomes were observed for cardiogenic shock, left ventricular failure, hypotension, arrhythmia and death.Results: Acute LVF was significantly (P<0.05) higher in group I but other complications were not significant (P>0.05) between two groups. LM involvement was significantly higher in group I (91.1% vs. 20.0%, p<0.05). ST segment elevation in aVR greater than ST segment elevation in V• (n=45) for prediction of LM significant disease has got a sensitivity of 82.0%, specificity 90.0%, accuracy 85.6%, positive and negative predictive values were 91.1% and 80.0% respectively.Conclusion: ST segment deviation in lead aVR greater than that in lead V1 is supposed to be a positive predictor of left main coronary artery obstruction with highly sensitivity and accuracy. Precordial leads V1 and V6 can also predict the critical LMCA obstruction in patients with acute coronary syndrome.Cardiovasc. j. 2017; 9(2): 77-82

scholarly journals Significance of ST Segment Elevation in Lead aVR in Patients with Non-ST Elevation Acute Coronary Syndrome

2019 ◽  
Vol 14 (2) ◽  
pp. 71-76
Author(s):  
Pritam Kumar Gachchhadar ◽  
Manzoor Mahmood ◽  
Dipal Krishna Adhikary ◽  
MSI Tipu Chowdhury ◽  
Md Ashraf Uddin Sultan ◽  
...  
Keyword(s):  
Acute Coronary Syndrome ◽  
Area Under The Curve ◽  
Left Main ◽  
St Segment Elevation ◽  
Coronary Syndrome ◽  
Triple Vessel Disease ◽  
St Segment ◽  
Lead Avr ◽  
St Elevation ◽  
Elevation Acute Coronary Syndrome

Background: As acute occlusion of the left main (LM) artery causes life-threatening hemodynamic deterioration and malignant arrhythmias, resulting in an adverse outcome, a rapid diagnosis and subsequent urgent revascularization with percutaneous coronary intervention (PCI) or coronary bypass surgery is very important in this subset of patients. The 12-lead electrocardiogram (ECG) is a crucial tool in the diagnosis and risk stratification of acute coronary syndrome (ACS). Unlike other 11 leads, lead aVR has been long neglected until recent years. Objective: To determine the accuracy of 12-lead electrocardiography in predicting left main and/or triplevessel disease in patients with non-ST elevation acute coronary syndrome (NSTE- ACS). Methodology: This cross sectional observational study carried out among patients presenting with non-ST elevation acute coronary syndrome at Cardiac Emergency Department or CCU of BSMMU. This study was conducted from May 2017 to April 2018. A total of 36 patients meeting the eligibility criteria were consecutively included. Data collection was carried out by using a questionnaire. Informed written consent was obtained from the hospital authority. Analysis of data was finally done with Statistical Package for Social Science program 17 version of computer on the basis of different variables. Result: As ST-segment elevation in lead aVR is a continuous variable, a suitable cut-off for ST- elevation in lead aVR was found out for diagnosing LM and/or triple vessel disease (TVD) using ROC curve. The cut-off value was 0.75 mm which gave us an optimum sensitivity of 88.5% and a specificity of 80% with an area under the curve being 0.892(95% CI = 0.785-1.000), p < 0.001. The area under the curve demonstrated that 89.2% of the LM and/or TVD were correctly diagnosed with ST elevation e” 0.75 mm in lead aVR in patients with non-ST segment elevation acute coronary syndrome. The positive predictive value was commendably high (92%) and negative predictive value was no less (72.7%) with an overall diagnostic accuracy of 86%. Conclusion: From the findings of the study it can be concluded that ST- segment elevation e”0.75 mm in lead aVR in patients of non-ST segment elevation acute coronary syndrome had optimum sensitivity and specificity with an appreciably high overall diagnostic accuracy. The ST- segment elevation e”0.75 mm in lead aVR in patients with non-STE-ACS can differentiate LM and/or triple vessel disease with fair degree of accuracy. University Heart Journal Vol. 14, No. 2, Jul 2018; 71-76

Exercise-induced ST-segment elevation in leads aVR and V1 for the prediction of left main disease

2008 ◽  
Vol 128 (2) ◽  
pp. 240-243 ◽  
Author(s):  
M. Tuna Katırcıbaşı ◽  
H. Tolga Koçum ◽  
Abdullah Tekin ◽  
Tansel Erol ◽  
Göknur Tekin ◽  
...  
Keyword(s):  
Left Main ◽  
Left Main Disease ◽  
St Segment Elevation ◽  
St Segment ◽  
Exercise Induced
Sign in / Sign up

Export Citation Format

Share Document