Cardiac arrest: Difference between revisions
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[[Clinical practice guideline]]s summarize management.<ref name="pmid16314375">{{cite journal| author=ECC Committee, Subcommittees and Task Forces of the American Heart Association| title=2005 American Heart Association Guidelines for Cardiopulmonary Resuscitation and Emergency Cardiovascular Care. | journal=Circulation | year= 2005 | volume= 112 | issue= 24 Suppl | pages= IV1-203 | pmid=16314375 | doi=10.1161/CIRCULATIONAHA.105.166550 | pmc= | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=16314375 }} </ref> | [[Clinical practice guideline]]s summarize management.<ref name="pmid16314375">{{cite journal| author=ECC Committee, Subcommittees and Task Forces of the American Heart Association| title=2005 American Heart Association Guidelines for Cardiopulmonary Resuscitation and Emergency Cardiovascular Care. | journal=Circulation | year= 2005 | volume= 112 | issue= 24 Suppl | pages= IV1-203 | pmid=16314375 | doi=10.1161/CIRCULATIONAHA.105.166550 | pmc= | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=16314375 }} </ref> | ||
Patients surviving cardiac arrest who cannot follow commands<ref name="pmid11856793">{{cite journal| author=Hypothermia after Cardiac Arrest Study Group| title=Mild therapeutic hypothermia to improve the neurologic outcome after cardiac arrest. | journal=N Engl J Med | year= 2002 | volume= 346 | issue= 8 | pages= 549-56 | pmid=11856793 | doi=10.1056/NEJMoa012689 | pmc= | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=11856793 }} [http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=12207424 Review in: ACP J Club. 2002 Sep-Oct;137(2):46] [http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=12402814 Review in: Evid Based Nurs. 2002 Oct;5(4):111] </ref> or who are comatose, may have increased chance of favorable neurological outcome if their body temperature is cooled to 32 to 34 degrees centigrade. | Patients surviving cardiac arrest who cannot follow commands<ref name="pmid11856793">{{cite journal| author=Hypothermia after Cardiac Arrest Study Group| title=Mild therapeutic hypothermia to improve the neurologic outcome after cardiac arrest. | journal=N Engl J Med | year= 2002 | volume= 346 | issue= 8 | pages= 549-56 | pmid=11856793 | doi=10.1056/NEJMoa012689 | pmc= | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=11856793 }} [http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=12207424 Review in: ACP J Club. 2002 Sep-Oct;137(2):46] [http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=12402814 Review in: Evid Based Nurs. 2002 Oct;5(4):111] </ref> or who are comatose<ref name="pmid11856794">{{cite journal| author=Bernard SA, Gray TW, Buist MD, Jones BM, Silvester W, Gutteridge G et al.| title=Treatment of comatose survivors of out-of-hospital cardiac arrest with induced hypothermia. | journal=N Engl J Med | year= 2002 | volume= 346 | issue= 8 | pages= 557-63 | pmid=11856794 | doi=10.1056/NEJMoa003289 | pmc= | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=11856794 }} </ref>, may have increased chance of favorable neurological outcome if their body temperature is cooled to 32 to 34 degrees centigrade. | ||
==References== | ==References== | ||
<references/> | <references/> | ||
Revision as of 20:30, 13 January 2013
Cardiac arrest is the cessation of purposeful blood pumping by the heart, which is invariably fatal if not reversed by cardio-pulmonary resuscitation (CPR), usually requiring [[Advanced Cardiac Life Support]. Electrical activity of the heart does not necessarily cease; it may simply not stimulate the cardiac musclature, as in electromechanical dissociation (EMD), or ineffectively stimulate it, as in ventricular fibrillation (VF). VF, indeed, is the most common rhythm seen in emergency medicine.
Basic CPR, with closed-chest compressions and possibly rescue breathing, rarely reverses adult arrest, but is a potentially life-saving intervention that buys time for more advanced interventions, such as electrical defibrillation to reverse VF. ACLS is most likely to be effective, although with a much lower success rate than popular perception, with metabolically related arrests. Arrests caused by trauma have a much more dismal prognosis, although heroic, highly-skilled interventions such as opening the chest and manually compressing the heart can work in some cases, usually with massive fluid replacement. Cardiac arrest caused by blunt chest trauma is considered irreversible by most trauma physicians.
Terminology in this area can be confusing. Heart failure does not mean the heart has literally stopped, but is a spectrum of degradations in pumping function. Terminal heart failure can lead to cardiac arrest. A subset of arrests are of the form of sudden cardiac death, which, despite the name, has one of the better chances of resuscitation; it is often due to VF.
Treatment
Cardio Pulmonary Resuscitation
Clinical practice guidelines summarize management.[1]
Induced hypothermia
Clinical practice guidelines summarize management.[1]
Patients surviving cardiac arrest who cannot follow commands[2] or who are comatose[3], may have increased chance of favorable neurological outcome if their body temperature is cooled to 32 to 34 degrees centigrade.
References
- ↑ 1.0 1.1 ECC Committee, Subcommittees and Task Forces of the American Heart Association (2005). "2005 American Heart Association Guidelines for Cardiopulmonary Resuscitation and Emergency Cardiovascular Care.". Circulation 112 (24 Suppl): IV1-203. DOI:10.1161/CIRCULATIONAHA.105.166550. PMID 16314375. Research Blogging.
- ↑ Hypothermia after Cardiac Arrest Study Group (2002). "Mild therapeutic hypothermia to improve the neurologic outcome after cardiac arrest.". N Engl J Med 346 (8): 549-56. DOI:10.1056/NEJMoa012689. PMID 11856793. Research Blogging. Review in: ACP J Club. 2002 Sep-Oct;137(2):46 Review in: Evid Based Nurs. 2002 Oct;5(4):111
- ↑ Bernard SA, Gray TW, Buist MD, Jones BM, Silvester W, Gutteridge G et al. (2002). "Treatment of comatose survivors of out-of-hospital cardiac arrest with induced hypothermia.". N Engl J Med 346 (8): 557-63. DOI:10.1056/NEJMoa003289. PMID 11856794. Research Blogging.