Abstract 90: Inhospital Outcome of 458 Patients with Acute Myocardial Infarction Requiring Mechanical Ventilation. Results of the BEAT Registry of the ALKK.
Background: There is only limited information about characteristics and clinical outcome of patients with acute myocardial infarction (AMI) requiring endotracheal intubation and mechanical ventilation. Therefore we sought to evaluate the clinical course of a large cohort of patients with AMI and mechanical ventilation.
Methods: The BEAT Registry of the ALKK prospectively enrolled all consecutive patients requiring mechanical ventilation, who were admitted to an internal intensiv care unit (ICU) of 45 participating German centers. Patient characteristics, treatment and complications until discharge were collected. For this analysis we created a subgroup of patients admitted with ST-segment elevation or non-ST Segment elevation myocardial infarction.
Results: During the 9-month study period 458 consecutive patients with AMI were included. The mean age was 68±8 years and 71% were men. While 40% of the patients were intubated in the prehospital phase, 60% were intubated in the hospital. The initial cause for intubation was in 48% of the cases ventricular fibrillation/ tachycardia or sudden cardiac death, in 39% congestive heart failure and in 13% of the cases non-cardiac. Of the 458 patients 256 (56%) developed cardiogenic shock, 86 (19%) acute renal failure, 76 (17%) coma or brain damage, 64 (14%) severe infection, 46 (10%) sepsis, 28 (6%) MODS and 17 (4%) gastrointestinal bleeding. 204 (45%) patients underwent coronary angiography, 38% were treated with PCI and 5% with coronary artery bypass grafting. The inhospital mortality in the total group was 48% and in the subgroup of patients with cardiogenic shock 69%.
Conclusion: Patients requiring mechanical ventilation as complication during the early phase of an AMI constitute a high risk subgroup with a mortality of 50%. Further research is necessary to improve the outcome of these patients.