Linked Life Data

19328961

Source:http://linkedlifedata.com/resource/pubmed/id/19328961

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
2009-3-30
pubmed:abstractText
Recent work has demonstrated the benefit of low pressure (LP) reperfusion to protect the heart undergoing an ischemic insult. The goal of the present study was to determine the optimal pressure for the application of LP reperfusion. Isolated rats hearts (n = 30) were exposed to 40 minutes of global warm ischemia followed by 70 minutes of reperfusion with a pressure fixed at 100 cm H(2)O (normal pressure [NP] = control group), 85 cm (group LP [low pressure]-85), 70 cm (group LP-70), or 55 cm (group LP-55). Cardiac function was assessed during reperfusion using the Langendorff model. Myocardial necrosis was assessed by measuring lactate dehydrogenase (LDH) and creatine kinase (CK) leakage in the coronary effluents. Functional recovery was progressively and significantly improved with decreased perfusion pressure. Rate-pressure product (RPP) averaged 3765 +/- 408, 6824 +/- 439, and 12,036 +/- 664 mm Hg/min, respectively, among the control, LP-85, and LP-70 groups (P < .001, LP-70 vs other groups). However, RPP collapsed in the LP-55 group. Similarly, necrosis as measured by LDH and CK leakage progressively reduced between LP-100 and LP-70 hearts (P < .01), with a drastic increase in enzyme in the LP-55 group. In conclusion, this study demonstrated that 70 cm H(2)O is an optimal LP to improve postischemic contractile dysfunction and attenuate necrosis during reperfusion.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Mar
pubmed:issn
0041-1345
pubmed:author
pubmed:issnType
Print
pubmed:volume
41
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
703-4
pubmed:meshHeading
pubmed:year
2009
pubmed:articleTitle
Optimal pressure for low pressure controlled reperfusion to efficiently protect ischemic heart: an experimental study in rats.
pubmed:affiliation
INSERM U886 and Université Claude Bernard Lyon-1, Lyon, France.
pubmed:publicationType
Journal Article