Linked Life Data

7574012

Source:http://linkedlifedata.com/resource/pubmed/id/7574012

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
1995-11-6
pubmed:abstractText
Forty patients undergoing coronary artery bypass grafting were studied, of whom 24 had depressed global left ventricular (LV) function at preoperative catheterization, to evaluate the effects of midazolam on LV pump performance and contractility. Transesophageal echocardiography and simultaneous hemodynamic measurements were used to assess LV preload, afterload, and systolic performance during inhalation of 100% O2 and after 0.1 mg/kg of midazolam. Systolic function indices were expressed as a percent of the predicted value for observed end-systolic stress to estimate LV contractility. In the entire study population, midazolam did not affect cardiac index. Heart rate and mean arterial pressure were reduced (63 +/- 13 to 59 +/- 12 bm; P < 0.0006 and 89 +/- 15 to 76 +/- 16 mm Hg; P < 0.0001) as were pulmonary capillary wedge pressure, central venous pressure, and systemic and pulmonary vascular resistance. Afterload, as measured by end-systolic stress, was reduced (55 +/- 33 to 48 +/- 26 kdyne/cm2; P = 0.007) with no change in fractional shortening or percent area change. As a result, systolic function decreased in relation to observed end-systolic stress, providing evidence of reduced LV contractility. Thus, midazolam administration (0.1 mg/kg) caused no change in cardiac pump performance but decreased LV contractility in the entire population. Myocardial contractility was lower at baseline and after the administration of midazolam in the depressed ejection fraction group, but the decrease in contractility was not exaggerated in the depressed ejection fraction group.(ABSTRACT TRUNCATED AT 250 WORDS)
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
AIM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Oct
pubmed:issn
0003-2999
pubmed:author
pubmed:issnType
Print
pubmed:volume
81
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
793-9
pubmed:dateRevised
2007-11-15
pubmed:meshHeading
pubmed:year
1995
pubmed:articleTitle
The effect of midazolam on left ventricular pump performance and contractility in anesthetized patients with coronary artery disease: effect of preoperative ejection fraction.
pubmed:affiliation
Department of Anesthesiology, New York Hospital-Cornell University Medical College, New York, USA.
pubmed:publicationType
Journal Article