Related Experiment Video

Updated: Feb 16, 2026

Ultrasonographic Assessment During Cardiopulmonary Resuscitation
06:04

Ultrasonographic Assessment During Cardiopulmonary Resuscitation

Published on: October 24, 2020

7.6K

Witnessed out-of-hospital cardiac arrest- effects of emergency dispatch recognition

S Syväoja1, A Salo2, A Uusaro3

  • 1Department of Anaesthesia and Intensive Care, North Karelia Central Hospital, Joensuu, Finland.

Acta Anaesthesiologica Scandinavica
|December 22, 2017
PubMed

Insights

Recognizing out-of-hospital cardiac arrest (OHCA) in emergency dispatch centers improves survival. Early recognition leads to more bystander CPR, faster emergency medical service response, and better patient outcomes.

Area of Science:

  • Emergency Medicine
  • Public Health
  • Cardiology

Background:

  • Out-of-hospital cardiac arrest (OHCA) survival is critically dependent on the chain of survival.
  • Early recognition of OHCA by emergency communication centers (EMCC) is vital for timely intervention.
  • This study investigates the impact of EMCC recognition on OHCA survival and chain of survival elements.

Purpose of the Study:

  • To determine the effect of EMCC recognition of OHCA on survival rates.
  • To analyze the influence of EMCC recognition on key components of the chain of survival.
  • To evaluate the association between EMCC OHCA recognition and bystander CPR, EMS response times, and patient outcomes.

Main Methods:

  • Analysis of 2054 bystander-witnessed OHCA cases of cardiac origin.
  • Data sourced from the Helsinki University Hospital's OHCA patient registry (1997-2013).
  • Comparison of outcomes between recognized and unrecognized OHCA events by the EMCC.

Main Results:

  • OHCA recognition by EMCC was associated with higher rates of return of spontaneous circulation (ROSC) (49% vs. 40%) and survival to discharge (23% vs. 16%).
  • EMCC recognition increased the likelihood of dispatcher-provided CPR instructions (60% of recognized cases) and bystander CPR (58% of recognized cases).
  • Recognized OHCAs experienced shorter EMS response times (8 min vs. 9 min) compared to unrecognized events.

Conclusions:

  • EMCC recognition of OHCA significantly improves patient survival rates.
  • Early OHCA recognition by dispatchers enhances bystander CPR rates and reduces EMS response times.
  • EMCC recognition is a critical factor in improving overall OHCA patient outcomes within the chain of survival.
Abstract

More Related Videos

Prehospital Thrombolysis: A Manual from Berlin05:52

Prehospital Thrombolysis: A Manual from Berlin

Published on: November 26, 2013

22.5K
Technical Refinement of a Bilateral Renal Ischemia-Reperfusion Mouse Model for Acute Kidney Injury Research03:13

Technical Refinement of a Bilateral Renal Ischemia-Reperfusion Mouse Model for Acute Kidney Injury Research

Published on: November 3, 2023

3.1K

Related Concept Videos

Introduction Cardiac Emergencies01:30

Introduction Cardiac Emergencies

Cardiac emergencies are critical situations involving the heart that require immediate medical intervention to prevent severe complications or death. These emergencies often arise from underlying heart conditions that impair the heart's ability to function correctly.Types of Cardiac EmergenciesThe most common types of cardiac emergencies include Acute Coronary Syndrome (ACS), myocardial infarction (MI), cardiac arrest, and heart failure.Acute Coronary Syndrome (ACS)Acute Coronary Syndrome (ACS)...
384
Cardiopulmonary Resuscitation III: AED Use01:23

Cardiopulmonary Resuscitation III: AED Use

Introduction to AEDAn Automated External Defibrillator (AED) is a portable medical device that analyzes the heart's rhythm and, if necessary, delivers an electrical shock to help the heart re-establish an effective rhythm during sudden cardiac arrest (SCA). SCA occurs when the heart suddenly and unexpectedly stops beating, leading to a loss of blood flow to the brain and other vital organs. In such emergencies, time is of the essence, and using an AED, combined with Cardiopulmonary...
781
Cardiopulmonary Resuscitation I: Adult01:21

Cardiopulmonary Resuscitation I: Adult

Cardiopulmonary resuscitation, or CPR, is a life-saving emergency procedure performed when a person's heart has stopped beating or they are no longer breathing. The foundation of CPR is Basic Life Support (BLS), which focuses on the early recognition of cardiac arrest, the immediate start of high-quality chest compressions, and the timely use of an automated external defibrillator (AED).Assessing Responsiveness and Checking the Carotid PulseWhen approaching an unresponsive person, first ensure...
787
Cardiopulmonary Resuscitation IV: Pharmacological Management01:25

Cardiopulmonary Resuscitation IV: Pharmacological Management

Pharmacologic intervention is crucial in treating cardiac arrest patients during ACLS or Advanced Cardiovascular Life Support. The ACLS algorithms guide the administration of specific drugs based on the patient's cardiac arrest rhythm, which includes pulseless ventricular tachycardia (VT), ventricular fibrillation (VF), asystole, and pulseless electrical activity (PEA).EpinephrineIndication: Epinephrine is the first-line drug for all cardiac arrest rhythms.Mechanism of Action: Epinephrine...
922
Bystander Effect02:09

Bystander Effect

The discussion of bullying highlights the problem of witnesses not intervening to help a victim. This is a common occurrence, as the following well-publicized event demonstrates. In 1964, in Queens, New York, a 19-year-old woman named Kitty Genovese was attacked by a person with a knife near the back entrance to her apartment building and again in the hallway inside her apartment building. When the attack occurred, she screamed for help numerous times and eventually died from her stab wounds.
10.3K
Acute Coronary Syndrome III: Diagnostic Studies01:30

Acute Coronary Syndrome III: Diagnostic Studies

Diagnosing acute coronary syndrome or ACS begins with a thorough patient history. Notable symptoms include central, crushing chest pain radiating to the left arm, neck, jaw, or back, along with shortness of breath, sweating (diaphoresis), nausea, vomiting, dizziness, and palpitations.It is crucial to note any history of cardiac illnesses and assess risk factors, including age, gender, smoking, hypertension, diabetes, hyperlipidemia, and a sedentary lifestyle.During physical examination, vital...
294