Linked Life Data

3516001

Source:http://linkedlifedata.com/resource/pubmed/id/3516001

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
1986-4-29
pubmed:abstractText
In five patients with acute respiratory insufficiency the changes in tracheal pressure (P), lung volume (V) and transthoracic electric impedance TEI (Z) were measured during delayed expiration all over the inspiratory capacity (IC) from TLC to FRC. The quasi-static V/Z- and Z/P-curves were two-dimensionally displayed, and the Z/P-curve was volume-calibrated on the Y-axis (Z) using the linear V/Z-relationship. During high-frequency jet ventilation (HFJV, 200/min), the Z- and P-excursions were displayed on the "frozen" Z/P-curve as flat discs. By well-aimed increase in driving pressure and I/E-ratio the unknown FRC was enhanced in 4 stages (I-IV) by 0.33 IC, 0.5 IC, 0.66 IC and 0.75 IC, to measure haemodynamic reactions 10 minutes later (Swan-Ganz catheter). The pulmonary vascular resistance remained unchanged between stage I and II. It changed moderately in stage III (+14%) and was found to be markedly increased in stage IV (+45%). The increase in PVR was well parabolically correlated (r = 0.88) to the fraction of IC by which FRC was expanded. In a previous study a very similar function could be documented by us for the end-inspiratory lung volume during conventional PEEP ventilation. Concomitant to the increase in PVR the CI fell linearilly (r = 0.95). We conclude from our results: 1. TEI may be of value in monitoring HFJV. It offers the possibility to measure the increase in lung volume ("PEEP effect") and to titrate it deliberately within the usable volume range IC. 2.(ABSTRACT TRUNCATED AT 250 WORDS)
pubmed:language
ger
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:month
Jan
pubmed:issn
0003-2417
pubmed:author
pubmed:issnType
Print
pubmed:volume
35
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
24-9
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1986
pubmed:articleTitle
[Hemodynamic side effects of high-frequency jet ventilation as a function of lung volume. Impedance spirometric studies].
pubmed:publicationType
Journal Article, English Abstract