Linked Life Data

2444802

Source:http://linkedlifedata.com/resource/pubmed/id/2444802

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
1987-11-27
pubmed:abstractText
The acute hemodynamic responses to beta-adrenoceptor blockade with the beta 1-selective antagonist metoprolol, and to combined alpha/beta-receptor blockade with labetalol, were compared intraindividually in a randomized single-blind, cross-over study. Fourteen patients with proved ischemic heart disease, aged 52-64 years, were studied at rest (supine) and during ischemia-inducing exercise (in the seated posture) using invasive percutaneous techniques. Metoprolol reduced heart rates and cardiac output greatly (p less than 0.001) and systemic arterial pressures slightly (p less than 0.001) under all conditions. Left ventricular filling pressures increased. Labetalol induced a slight decrease in heart rates during exercise, while cardiac output was unchanged. Systemic arterial pressures and vascular resistances, pressures and resistances in the pulmonary circulation, and left ventricular filling pressures were distinctly lower. During ischemia-inducing exercise, the differences between the effects of labetalol and metoprolol on heart rate, cardiac output, systemic vascular resistance, and left ventricular filling pressures were highly significant. The effects on the rate X pressure product and on angina were similar. It is concluded that combined alpha/beta-blockade with labetalol offsets or attenuates the potential adverse hemodynamic effects of beta-receptor blockade alone without loss of symptomatic efficacy.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Oct
pubmed:issn
0160-2446
pubmed:author
pubmed:issnType
Print
pubmed:volume
10
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
474-8
pubmed:dateRevised
2008-11-21
pubmed:meshHeading
pubmed:year
1987
pubmed:articleTitle
Hemodynamic effects at rest and during exercise of combined alpha/beta-receptor blockade and of beta-receptor blockade alone in patients with ischemic heart disease.
pubmed:affiliation
Department of Physiology, Free University, Berlin, F.R.G.
pubmed:publicationType
Journal Article, Clinical Trial, Comparative Study, Randomized Controlled Trial