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To determine the clinical effectiveness of hypothermia treatment in patients with out-of-hospital cardiac arrest complicating acute myocardial infarction.
Out-of-hospital cardiac arrest (OHCA) is a leading cause of mortality worldwide. Due to significant improvement in the management of patients with OHCA, an increasing number of initially resuscitated patients are being admitted to hospitals. Nevertheless, OHCA remains associated with a poor prognosis, with a survival rate of approximately 8.8% to hospital discharge. Moreover, international registry data have indicated that favorable neurological outcome at hospital discharge or 30 days after OHCA is only 2.8-18.2% across all registries.
The majority of adult cardiac arrest cases are associated with obstructive coronary artery disease. Thus, current guideline recommended that immediate angiography and primary revascularization in all patients with resuscitated cardiac arrest and ST-segment elevation on electrocardiography, and also in patients with resuscitated cardiac arrest without ST-segment elevation, but with high probability of acute coronary occlusion. However, even after prompt restoration of blood flow, a substantial proportion of patients with myocardial infarction (MI) experience extensive necrosis. The application of hypothermia in patients with acute MI focuses on the reducing energy consumption at cardiac level, a factor consistently linked to diminished infarction size in animal study. However, in a recent meta-analysis of randomized trials comparing different strategies for therapeutic hypothermia adjunctive to percutaneous coronary intervention (PCI) versus standard of care in patients with acute MI, faille to demonstrate clear benefit. It is important to note, however, these randomized trials were underpowered and as a results, they were unable to draw firm conclusions regarding the impact of therapeutic hypothermia.
Therefore, this study aimed to investigate the impact of therapeutic hypothermia on clinical outcomes in patients who underwent primary PCI for acute MI after OHCA.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Hypothermia | Experimental | Patients admitted with out-of-hospital cardiac arrest and treated with hypothermia |
|
| No hypothermia | No Intervention | Patients admitted with out-of-hospital cardiac arrest and treated without hypothermia |
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Hypothermia | Device | Patients admitted with out-of-hospital cardiac arrest and treated with hypothermia |
|
| Measure | Description | Time Frame |
|---|---|---|
| Death from any cause at hospital discharge | Death from any cause at hospital discharge | up to 30 days |
| Measure | Description | Time Frame |
|---|---|---|
| Poor neurological outcomesat hospital discharge | Poor neurological outcomes, which was defined as a Glasgow-Pittsburge Cerebral Performance Category (CPC) value at hospital discharge. The investigators determined the neurological outcome according to Pittsburgh CPC, which is a scale on 1 to 5. 1 is e.g. good cerebral performance: conscious, alert, able to work, might have mild neurological or physiological deficit contrast to 5 which is brain death. |
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Inclusion Criteria:
Exclusion Criteria:
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| Name | Affiliation | Role |
|---|---|---|
| Yongcheol Kim, MD, PhD | Yongin Severance Hospital, Yonsei University College of Medicine | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Yongin Severance Hospitall, Yonsei University College of Medicine | Yongin | Gyeonggi-do | 16995 | South Korea |
| PubMed Identifier | Type | Citation | Retractions |
|---|---|---|---|
| 18687513 | Background | Becker L, Gold LS, Eisenberg M, White L, Hearne T, Rea T. Ventricular fibrillation in King County, Washington: a 30-year perspective. Resuscitation. 2008 Oct;79(1):22-7. doi: 10.1016/j.resuscitation.2008.06.019. Epub 2008 Aug 6. | |
| 20828914 | Background | Berdowski J, Berg RA, Tijssen JG, Koster RW. Global incidences of out-of-hospital cardiac arrest and survival rates: Systematic review of 67 prospective studies. Resuscitation. 2010 Nov;81(11):1479-87. doi: 10.1016/j.resuscitation.2010.08.006. Epub 2010 Sep 9. |
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| ID | Term |
|---|---|
| D058687 | Out-of-Hospital Cardiac Arrest |
| D009203 | Myocardial Infarction |
| D007035 | Hypothermia |
| ID | Term |
|---|---|
| D006323 | Heart Arrest |
| D006331 | Heart Diseases |
| D002318 | Cardiovascular Diseases |
| D017202 | Myocardial Ischemia |
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The investigators aim to compare and evaluate the effects of therapeutic hypothermia versus standard care on clinical outcomes, such as survival rates and neurological function, in patients with out-of-hospital cardiac arrest complicating acute myocardial infarction.
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| up to 30 days |
| 20924010 | Background | Bobrow BJ, Spaite DW, Berg RA, Stolz U, Sanders AB, Kern KB, Vadeboncoeur TF, Clark LL, Gallagher JV, Stapczynski JS, LoVecchio F, Mullins TJ, Humble WO, Ewy GA. Chest compression-only CPR by lay rescuers and survival from out-of-hospital cardiac arrest. JAMA. 2010 Oct 6;304(13):1447-54. doi: 10.1001/jama.2010.1392. |
| D014652 |
| Vascular Diseases |
| D007238 | Infarction |
| D007511 | Ischemia |
| D010335 | Pathologic Processes |
| D013568 | Pathological Conditions, Signs and Symptoms |
| D009336 | Necrosis |
| D001832 | Body Temperature Changes |
| D012816 | Signs and Symptoms |