Linked Life Data

1610014

Source:http://linkedlifedata.com/resource/pubmed/id/1610014

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
1992-7-23
pubmed:abstractText
Aminophylline has been reported to augment diaphragmatic contraction, although this remains a controversial finding. We studied the effect of aminophylline on regional diaphragmatic shortening, changes in transdiaphragmatic pressure (delta Pdi), and integrated regional electromyographic (EMG) activity of the diaphragm (Edi) after a right thoracotomy in nine lambs using sonomicrometry, esophageal and gastric balloons, and EMG. Sonomicrometer crystals and EMG leads were implanted into the costal and crural regions of the diaphragm through a right thoracotomy, and a tracheostomy was performed. The animals were studied while awake within 4 days after surgery. Fractional costal and crural diaphragmatic shortening was measured using the sonomicrometer; delta Pdi was calculated from esophageal and gastric pressures. Respiratory variables were measured through the tracheostomy. Data were collected during quiet breathing and during CO2 rebreathing. After control measurements, aminophylline (10 mg/kg) was administered intravenously, producing a serum concentration of 17.7 +/- 1.5 micrograms/ml. Aminophylline did not augment shortening, increase delta Pdi, or overcome postoperative diaphragmatic inhibition acutely in the awake sheep after a right lateral thoracotomy. A small decrease of end-tidal CO2, from 5.2% to 4.9%, was measured at rest during aminophylline infusion, but Edi was unchanged. Although during CO2 rebreathing diaphragmatic shortening increased, the addition of aminophylline did not further augment shortening. Our data in awake lambs suggest that aminophylline does not improve diaphragmatic contraction in the acute postoperative period.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
AIM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jul
pubmed:issn
0003-3022
pubmed:author
pubmed:issnType
Print
pubmed:volume
77
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
93-100
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1992
pubmed:articleTitle
Effects of aminophylline on regional diaphragmatic shortening after thoracotomy in the awake lamb.
pubmed:affiliation
Department of Anesthesia, Harvard Medical School, Massachusetts General Hospital, Boston 02114.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't