Linked Life Data

17515735

Source:http://linkedlifedata.com/resource/pubmed/id/17515735

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
2007-5-22
pubmed:abstractText
We evaluated the effects of the Levitronix UltraMag pediatric ventricular assist system on healthy animals during 29- to 90-day periods by assessing hemocompatibility and hepatic and renal functions while operating the device in a flow range suitable for pediatric patients. Nine lambs (weight, 15 to 24 kg) received the Levitronix UltraMag with an outflow cannula anastomosed to the descending aorta and an inflow cannula inserted into the left ventricular apex. Pump function data were collected at 1-hour intervals, and postoperative hematology and clinical chemistry tests were performed weekly throughout the study. Complete necropsy and histopathologic examinations were performed at study termination. Pump and circuit were thoroughly inspected for evidence of thrombi. All animals reached the scheduled endpoint of 29 to 90 days without device-related problems. Mean flow was maintained at 1.14 +/- 0.19 L/min. Hematologic values were within normal range in all animals except in one lamb that had a severe hemolytic reaction after cefazolin sodium administration. In all animals, serum glutamic-oxaloacetic transaminase and creatinine kinase levels increased after surgery but gradually returned to normal limits within 1 week. Postmortem examination of the explanted organs revealed small infarcted areas in five lamb kidneys, but renal function was unaffected. All other major organs were unremarkable. In one explanted pump (a 30-day study), a small thrombus was seen within the impeller blade. The other eight pumps were free of thrombus. The Levitronix UltraMag successfully operated in pediatric flow ranges without device-related adverse events.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:issn
1538-943X
pubmed:author
pubmed:issnType
Electronic
pubmed:volume
53
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
392-6
pubmed:meshHeading
pubmed:articleTitle
Preclinical testing of the Levitronix Ultramag pediatric cardiac assist device in a lamb model.
pubmed:affiliation
Cardiovascular Surgical Research Laboratories, Texas Heart Institute, Houston, TX, USA.
pubmed:publicationType
Journal Article