Heart rate: Difference between revisions

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imported>Robert Badgett
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* Harm in treating
* Harm in treating
** [[Hypertension]]<ref name="pmid19017516">{{cite journal |author=Bangalore S, Sawhney S, Messerli FH |title=Relation of beta-blocker-induced heart rate lowering and cardioprotection in hypertension |journal=J. Am. Coll. Cardiol. |volume=52 |issue=18 |pages=1482–9 |year=2008 |month=October |pmid=19017516 |doi=10.1016/j.jacc.2008.06.048 |url=http://linkinghub.elsevier.com/retrieve/pii/S0735-1097(08)02724-1 |issn=}}</ref>
** [[Hypertension]]<ref name="pmid19017516">{{cite journal |author=Bangalore S, Sawhney S, Messerli FH |title=Relation of beta-blocker-induced heart rate lowering and cardioprotection in hypertension |journal=J. Am. Coll. Cardiol. |volume=52 |issue=18 |pages=1482–9 |year=2008 |month=October |pmid=19017516 |doi=10.1016/j.jacc.2008.06.048 |url=http://linkinghub.elsevier.com/retrieve/pii/S0735-1097(08)02724-1 |issn=}}</ref>
* Conflicting evidence suggesting both benefit<ref name="pmid18349171">{{cite journal |author=Beattie WS, Wijeysundera DN, Karkouti K, McCluskey S, Tait G |title=Does tight heart rate control improve beta-blocker efficacy? An updated analysis of the noncardiac surgical randomized trials |journal=Anesth. Analg. |volume=106 |issue=4 |pages=1039–48 |year=2008 |month=April |pmid=18349171 |doi=10.1213/ane.0b013e318163f6a9 |url=http://www.anesthesia-analgesia.org/cgi/pmidlookup?view=long&pmid=18349171 |issn=}}</ref> and harm<ref name="pmid17981830">{{cite journal |author=Cucherat M |title=Quantitative relationship between resting heart rate reduction and magnitude of clinical benefits in post-myocardial infarction: a meta-regression of randomized clinical trials |journal=Eur. Heart J. |volume=28 |issue=24 |pages=3012–9 |year=2007 |month=December |pmid=17981830 |doi=10.1093/eurheartj/ehm489 |url=http://eurheartj.oxfordjournals.org/cgi/pmidlookup?view=long&pmid=17981830 |issn=}}</ref> in [[perioperative care]]
* Conflicting evidence for [[perioperative care]] suggesting both harm<ref name="pmid18029345">{{cite journal |author=Biccard BM, Sear JW, Foëx P |title=Meta-analysis of the effect of heart rate achieved by perioperative beta-adrenergic blockade on cardiovascular outcomes |journal=Br J Anaesth |volume=100 |issue=1 |pages=23–8 |year=2008 |month=January |pmid=18029345 |doi=10.1093/bja/aem331 |url=http://bja.oxfordjournals.org/cgi/pmidlookup?view=long&pmid=18029345 |issn=}}</ref> and, in a more complicated analysis using maximum heart rates, benefit<ref name="pmid18349171">{{cite journal |author=Beattie WS, Wijeysundera DN, Karkouti K, McCluskey S, Tait G |title=Does tight heart rate control improve beta-blocker efficacy? An updated analysis of the noncardiac surgical randomized trials |journal=Anesth. Analg. |volume=106 |issue=4 |pages=1039–48 |year=2008 |month=April |pmid=18349171 |doi=10.1213/ane.0b013e318163f6a9 |url=http://www.anesthesia-analgesia.org/cgi/pmidlookup?view=long&pmid=18349171 |issn=}}</ref>.


==References==
==References==
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Revision as of 17:48, 17 July 2009

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In physiology, the heart rate is "the number of times the heart ventricles contract per unit of time, usually per minute."[1] This may have to be presented as an average in the presence of arrythmias, such as heart block, when some contractions are missed.

Bradycardia is the condition in which the heart rate is below normal; in tachycardia, it is above normal.

In pharmacology, a drug's affect on heart rate may be predictive of the drugs:

References