I was just curious if anyone knows the survival rate of cardiac arrest patients outside of hospitals, outside of hospitals with early care, in hospitals, the survival rate after resusitation, quality of life after being resusitated from full cardiac arrest, etc... Thanks!
A website would be awesome too! If you go to google.com and search for
"cardiac arrest" "survival rate"
(including the quotation marks) as a single search you will get a number of applicable documents on the first page of search results.
I would give you the links directly, but recently Yahoo answers has been returning an error when I try to post multiple links in a response.
Here are some excerpts from the articles returned:
"The out-of-hospital cardiac arrest (OHCA) has a worse survival rate (2-8% at discharge and 8-22% on admission), than an in-hospital cardiac arrest (15% at discharge). The principal determining factor is the initially documented rhythm. Patients with VF/VT have 10-15 times more chance of surviving than those suffering from pulseless electrical activity or asystole (as they are sensitive to defibrillation, whereas asystole and PEA are not).[citation needed]
Since mortality in case of OHCA is high, programs were developed to improve survival rate. A study by Bunch et al. showed that, although mortality in case of ventricular fibrillation is high, rapid intervention with a defibrillator increases survival rate to that of patients that did not have a cardiac arrest.[12][17]
Survival is mostly related to the cause of the arrest (see above). In particular, patients who have suffered hypothermia have an increased survival rate, possibly because the cold protects the vital organs from the effects of tissue hypoxia. Survival rates following an arrest induced by toxins is very much dependent on identifying the toxin and administering an appropriate antidote. A patient who has suffered a myocardial infarction due to a blood clot in the left coronary artery has a lower chance of survival as it cuts of the blood supply to most of the left ventricle (the chamber which must pump blood to the whole of the systemic circulation).
Cobbe et al (1996) conducted a study into survival rates from out of hospital cardiac arrest. 14.6% of those who had received resuscitation by ambulance staff survived as far as admission to an acute hospital ward. Of these, 59.3% died during that admission, half of these within the first 24 hours. 46.1% survived to hospital discharge (this is 6.75% of those who had been resuscitated by ambulance staff), however 97.5% suffered a mild to moderate neurological disability, and 2% suffered a major neurological disability. Of those who were successfully discharged from hospital, 70% were still alive 4 years after their discharge.[18]
Ballew (1997) performed a review of 68 earlier studies into prognosis following in-hospital cardiac arrest. They found a survival to discharge rate of 14% (this roughly double the rate for out of hospital arrest found by Cobbe et al (see above)), although there was a wide range (0-28%).[19]"
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"No statistics are available for the exact number of cardiac arrests that occur each year. It's estimated that more than 95 percent of cardiac arrest victims die before reaching the hospital. In cities where defibrillation is provided within 5 to 7 minutes, the survival rate from sudden cardiac arrest is as high as 30鈥?5 percent."
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"The American Heart Association estimates that about 95 percent of cardiac arrest victims die before reaching the hospital. In cities where cardiopulmonary resuscitation and defibrillation are provided within three to five minutes, survival rates are as high as 49 percent to 74 percent."
...
(within a hospital)
"There was no statistically significant difference in the occurrence of cardiac arrest by shift. In addition, neither age nor ethnicity/race corresponded to the shift in which cardiac arrest occurred.
However, patients whose cardiac arrest occurred at night had a lower survival rate (41 percent) than those whose event occurred during the day (49 percent) or evening (48 percent). The survival was the same for those treated in the intensive care unit (ICU) or a non-ICU area.
Eighteen percent of those who had cardiac arrest in the day or evening survived until discharge, while only 13 percent of those with cardiac arrest during the night survived to discharge."
--------- I had a cardiac arrest away from a hospital and survived, thanks to the local fire department. if CPR is started within 2 minutes of the patient's heart stopping, and is defibrillated within 4 minutes and the paramedics arrive within 8 minutes, the survival rate is around 30% (and is considered optimal)
if CPR is delayed, or does occur at all, and defibrillation occurs 10 minutes or more after the patient's heart stops, survival drops from 0-8%
The key here is to have early and quick access to AED (automatic external defibrillators) to shock the person's heart back into a life-sustaining rhythm.
Ironically, even though I work in a hospital, I don't have easy access to hospital data (the stuff I have is from my advanced cardiac life support textbook) but I just read an article today about the survival rates of cardiac arrest patients dropping dramatically on the night shift of hospitals. here's the link:
oh, and for more information you can go to the American Heart Association website for more information about survival rates... |
