Title: Successful or Unsuccessful Thrombolysis with Streptokinase in Acute Myocardial Infarction: A Descriptive Study

Authors: Dr Rajiv Girdhar, Dr Yogesh Kothari, Dr Ram Anil Raj, Dr Prajwal Shastry, Dr Chaitra Kannadka, Dr Kumar Kenchappa, Dr Narayan Raju

 DOI:  https://dx.doi.org/10.18535/jmscr/v6i3.122

Abstract

Background & Objectives: Acute myocardial infarction (AMI) is becoming increasingly important problem in developing countries, and thrombolysis is the main modality of treatment here. About 25-50% of patients fail to achieve successful reperfusion and these patients have poor prognosis. Since alternative modes of reperfusion are available, it is important to identify them. To study the effect of thrombolytic therapy in term of success and failure on the type of ST elevation MI, using streptokinase.

Material and Methods: This was a comparative study, conducted at Department of Cardiology, Rajarajeswari Medical College & Hospital Bangalore, from 1st October 2016 to31st November 2017. Patients with first acute myocardial infarction were divided into group A (successful thrombolysis) and group B (unsuccessful thrombolysis) using ECG criteria.

Results: Total number of patients were 104.Group A included 70 (67.30%) patients and group B included 34 (32.70%) patients. There were total 46(44.23%) patients of anterior MI with 24 patients in group A and 22 patients in group B (34.28% vs 64.70%, p<0.001). There were total 56 (53.84%) patients of inferior MI with 45 patients in group A and 11 patients in group B (64.28% vs 32.35%, p<0.001). Lateral myocardial infarction was diagnosed in 2 (1.9%) patients with 1 patient each in group A and group B (1.44% vs 2.9%, p=0.583).

Conclusion: Anterior MI was associated with a higher rate of thromblysis failure while inferior MI and lateral wall MI was associated with a higher rate of successful thrombolysis.

Keywords: Myocardial infarction; thrombolysis; type of myocardial infarction.

References

  1. MA, Joseph Loscalzo: ST segment elevation myocardial infarction in Longo,Fauci, Kasper, Hauser, Jameson, Loscalzo. Harrison’s principles of internal medicine.18h ed. New York: Mc GrawHill; 2012: 2021-35.
  2. Elliot MA, Eugene Braunwald: ST Elevation MI in Libby P, Bonow RO, Zipes DP, Mann DL. BRAUNWALD`S Heart Disease. 8th ed. Philadelphia: Elsevier; 2008:1207-1300..
  3. Alexander AW, Prall CM, Ryan TJ, Robert R: ST elevation myocardial infarction in Valentine F, Alexander RW, Robert A, Robert R, Spencer B , Ira S, et al. Hurst’s The Heart. 11th ed. New York: Mc Graw Hill; 2004:1277-1351.
  4. Mark A de Belder. Acute myocardial infarction: failed thrombolysis. Heart. 2001; 85; 104 - 112.
  5. De Belder MA. Coronary disease: acute myocardial infarction: unsuccessful thrombolysis. Heart 2001;85:104–12.
  6. Hochman JS, Sleeper LA, White HD. One-year survival following early revascularization for cardiogenic shock. JAMA 2001;285:190–2.
  7. Bhatia L, Clesham GJ, Turner DR. Clinical implications of STsegment non-resolution after thrombolysis for myocardial infarction. J R Soc Med 2004;97:566–70.
  8. Henriques JPS, Zijlstra F, Van’t Hof AW. Primary percutaneous coronary intervention versus thrombolytic treatment: long term follow up according to infarct location. Heart 2006;92:75–9.
  9. MONICA project, circulation. 1994; 90 ;583-612.
  10. Syed MA, Borzak S, Asfour A, Gunda M, Obeidat O, Murphy SA, et al. Single lead ST-segment recovery: a simple, reliable measure of successful fibrinolysis after Acute MI. Am Heart J. 2005 Feb; 147 (2) : 275-80.
  11. Prendergast BD, Shandall A, Buchalter MB. What do we do when thrombolysis fails? A United Kingdom survey. Int J Cardiol 1997;61:39–42.
  12. An international randomized trial comparing four thrombolytic strategies for acute myocardial infarction. The GUSTO investigators. N Eng J Med 1993;329:673–82.
  13. Lee YY, Tee MH, Zurkurnai Y, Than W, Sapawi M, Suhairi I. Thrombolytic failure with streptokinase in acute myocardial infarction using electrocardiogram criteria. Singapore Med J 2008;49:304–10.
  14. Goldhammer E, Kharash L, Abinader EG. Circadian fluctuations in the efficacy of thrombolysis with streptokinase. Postgrad Med J 1999;75:667–71.
  15. Brener SJ, Ellis SG, Sapp SK. Predictors of death and reinfarction at 30 days after primary angioplasty: the GUSTO IIb and RAPPORT trials. Am Heart J 2000;139:476–81.
  16. Schröder R, Wegscheider K, Schröder K, Dissmann R, Meyer- Sabellek W. Extent of early ST segment elevation resolution: a strong predictor of outcome in patients with acute myocardial infarction and a sensitive measure to compare thrombolytic regimens. A substudy of the International Joint Efficacy Comparison of Thrombolytics (INJECT) trial. J Am Coll Cardiol 1995;26:1657–64.
  17. Schroder R, Zeymer U, Wegscheider K, Neuhaus KL, for the HIT-4 Trial Group. A substudy of the Hirudin for Improvement of Thrombolysis (HIT)-4 Study. Comparison of the predictive value of ST segment elevation resolution at 90 and 180 min after start of streptokinase in acute myocardial infarction. Eur Heart J 1999;20:1563–71.

Corresponding Author

Dr Rajiv Girdhar

PG in DM Cardiology, Rajarajeswari Medical College and Hospital,

Kambipura, Mysore Road,

Bangalore 560074, India