Heart rate: Difference between revisions
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[[Bradycardia]] is the condition in which the heart rate is below normal; in [[tachycardia]], it is above normal. | [[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 benefit<ref name="pmid19487713">{{cite journal |author=McAlister FA, Wiebe N, Ezekowitz JA, Leung AA, Armstrong PW |title=Meta-analysis: beta-blocker dose, heart rate reduction, and death in patients with heart failure |journal=Ann. Intern. Med. |volume=150 |issue=11 |pages=784–94 |year=2009 |month=June |pmid=19487713 |doi= |url=http://www.annals.org/cgi/pmidlookup?view=long&pmid=19487713 |issn=}}</ref> or harm<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>. | In [[pharmacology]], a drug's affect on heart rate may be predictive of the drugs benefit<ref name="pmid19487713">{{cite journal |author=McAlister FA, Wiebe N, Ezekowitz JA, Leung AA, Armstrong PW |title=Meta-analysis: beta-blocker dose, heart rate reduction, and death in patients with heart failure |journal=Ann. Intern. Med. |volume=150 |issue=11 |pages=784–94 |year=2009 |month=June |pmid=19487713 |doi= |url=http://www.annals.org/cgi/pmidlookup?view=long&pmid=19487713 |issn=}}</ref><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, table of contents |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> or harm<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>. | ||
==References== | ==References== | ||
<references/> | <references/> | ||
Revision as of 15:57, 17 July 2009
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 benefit[2][3] or harm[4].
References
- ↑ Anonymous (2024), Heart rate (English). Medical Subject Headings. U.S. National Library of Medicine.
- ↑ McAlister FA, Wiebe N, Ezekowitz JA, Leung AA, Armstrong PW (June 2009). "Meta-analysis: beta-blocker dose, heart rate reduction, and death in patients with heart failure". Ann. Intern. Med. 150 (11): 784–94. PMID 19487713. [e]
- ↑ Beattie WS, Wijeysundera DN, Karkouti K, McCluskey S, Tait G (April 2008). "Does tight heart rate control improve beta-blocker efficacy? An updated analysis of the noncardiac surgical randomized trials". Anesth. Analg. 106 (4): 1039–48, table of contents. DOI:10.1213/ane.0b013e318163f6a9. PMID 18349171. Research Blogging.
- ↑ Bangalore S, Sawhney S, Messerli FH (October 2008). "Relation of beta-blocker-induced heart rate lowering and cardioprotection in hypertension". J. Am. Coll. Cardiol. 52 (18): 1482–9. DOI:10.1016/j.jacc.2008.06.048. PMID 19017516. Research Blogging.