Related Experiment Videos
[Ventricular fibrillation in the initial phase of acute myocardial infarct]
Insights
Rapid emergency care significantly improves survival for acute myocardial infarction patients experiencing ventricular fibrillation. Immediate intervention within one hour dramatically increases hospital survival rates, highlighting the need for widespread rapid response systems.
Area of Science:
- Cardiology
- Emergency Medicine
Context:
- Acute myocardial infarction (AMI) is a leading cause of mortality.
- Early ventricular fibrillation (VF) is a critical complication of AMI.
- Mobile Coronary Care Units (MCCUs) provide pre-hospital advanced care.
Purpose:
- To determine the incidence, predictivity, and prognosis of VF in the early phase of AMI.
- To analyze the impact of pre-hospital intensive care timing on VF outcomes.
- To assess the relationship between VF timing and survival in AMI patients.
Summary:
- A study of 301 AMI patients analyzed VF incidence and outcomes.
- Intensive care was received within 2 hours by 50.2% and 2-6 hours by 24.9%.
- VF occurred in 12.6% of patients, with 30% within 1 hour and 74% within 6 hours of symptom onset.
- Sinus bradycardia showed predictive value for VF (P<0.05).
- Survival was strongly linked to VF timing: 91% survival if VF within 1 hour, 71% within 6 hours, and 20% after 6 hours (P<0.01).
Impact:
- Findings underscore the critical role of rapid emergency response systems in improving survival from AMI-associated VF.
- The study advocates for widespread implementation of out-of-hospital rapid response emergency care.
- Early intervention is key to favorable prognosis in patients with acute myocardial infarction and ventricular fibrillation.
Abstract:
In order to determinate the incidence, predictivity and prognosis of ventricular fibrillation in the early phase of acute myocardial infarction a series of 301 patients with acute myocardial infarction consecutively assisted by the Mobile Coronary Care Unit of Florence was analyzed. 151 patients (50.2%) received intensive care within 2 hours from the onset of the symptoms, 75 patients (24.9%) received intensive care between the second and sixth hour. 38 patients (12.6%) had at least one episode of ventricular fibrillation. 30% of the episodes of ventricular fibrillation happened within 1 hours from the onset of the symptoms, 47.4% within 2 hours, 74% within 6 hours. Serious arrhythmias complicated the early phase of acute myocardial infarction, but only sinus bradycardia seems to have a significant predicativity of ventricular fibrillation (P less than 0.05). We found that hospital survival resuscitated patients is strictly related to the time between early symptoms and the episode of ventricular fibrillation: 91% of the patients with ventricular fibrillation within 1 hour were discharged alive from hospital, 71% of those with ventricular fibrillation within 6 hours, 20% of those with ventricular fibrillation beyond 6 hours (P less than 0.01). The high rate and the favourable prognosis of ventricular fibrillation in the early phase of acute myocardial infarction must lead to a widespread implementation of rapid response emergency care systems away from hospital.