• Users Online: 181
  • Print this page
  • Email this page
Year : 2019  |  Volume : 9  |  Issue : 4  |  Page : 211-215

Can QRS duration predict microvascular reperfusion after primary percutaneous coronary intervention?

Department of Cardiology, Faculty of Medicine, Zagazig University, Zagazig, Egypt

Correspondence Address:
Prof. Mohammad Mustafa Al-Daydamony
Department of Cardiology, Faculty of Medicine, Zagazig University, Zagazig
Login to access the Email id

Source of Support: None, Conflict of Interest: None

DOI: 10.4103/JICC.JICC_32_19

Rights and Permissions

Background: In patients with ST-segment elevation myocardial infarction (STEMI), primary percutaneous coronary intervention (PCI) was associated with early and sustained restoration of blood flow compared to fibrinolytic therapy. Impaired myocardial blush grade (MBG) may be present in many after successful PCI. Prolonged QRS was found to be associated with an increased morbidity and mortality after STEMI. Aim: This study aims to find out if prolonged QRS in STEMI patients can predict low MBG after primary PCI. Patients and Methods: Sixty STEMI patients were included in our study. History taking, clinical examination, electrocardiography with measuring of QRS duration, primary PCI, and echocardiography were done to them. QRS duration was measured before and after PCI, and the change was calculated. Results: Patients with low MBG (0–1) had significantly higher QRS duration before and after PCI and significantly lower change after PCI (P < 0.00001 for each). Independent predictors for MBG were in order of significance: QRS duration before PCI (P < 0.00001), QRS duration after PCI (P < 0.00001), troponin level (P < 0.00001), symptom to balloon time (P = 0.0063), and creatine kinase MB level (P = 0.015). QRS duration 89 ms could predict low MBG with sensitivity 82.6%, specificity 86.5%, positive predictive value 79.2%, and negative predictive value 88.9%. Conclusion: In STEMI patients undergoing primary PCI, prolonged QRS duration was associated with a low MBG, a sign of impaired microvascular reperfusion. QRS duration before and after PCI were found to be independent predictors for low MBG (0–1).

Print this article     Email this article
 Next article
 Previous article
 Table of Contents

 Similar in PUBMED
   Search Pubmed for
   Search in Google Scholar for
 Related articles
 Citation Manager
 Access Statistics
 Reader Comments
 Email Alert *
 Add to My List *
 * Requires registration (Free)

 Article Access Statistics
    PDF Downloaded49    
    Comments [Add]    

Recommend this journal