Linked Life Data

10687944

Source:http://linkedlifedata.com/resource/pubmed/id/10687944

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
7
pubmed:dateCreated
2000-3-22
pubmed:abstractText
Phenylpropanolamine (PPA) is widely used as a nasal decongestant administered orally in sustained release preparations and, in Sweden, the recommended dose nowadays is 50 mg twice daily for adults. The aim of this placebo-controlled, cross-over study was to determine the onset and duration of the decongestive effect of 50 and 100 mg PPA in 15 healthy subjects. All subjects arrived at the laboratory at 07.30 h. After an acclimatisation, the nasal mucosal baseline was established with rhinostereometry and the minimal cross-sectional area was measured using acoustic rhinometry. The systolic and diastolic blood pressures were also determined. Then all subjects were given their study drugs for the day and the measurements were repeated every hour for 8 h. This procedure was repeated for 3 days at 48 h intervals between the days. For purposes of comparison, the decongestive effect of oxymetazoline nasal spray was studied on a separate day. The decongestive effect of 100 mg PPA was similar to that of topical oxymetazoline. It develops after 1 h and lasts for approximately 6 h. The decongestive effect of oxymetazoline was significantly greater than that of 50 mg PPA and that of 100 mg PPA was significantly greater than that of 50 mg PPA using rhinostereometry, but not when using acoustic rhinometry. However, 50 mg PPA had no significant decongestive effect, compared with placebo, with rhinostereometry or acoustic rhinometry. In the first 3 h after administration of PPA, there was a dose-response increase in the systolic and diastolic blood pressures, which then returned to baseline. In conclusion, this study shows that PPA in double the recommended dose, i.e. 100 mg, has a significant decongestive effect on the nasal mucosa in healthy subjects. However, when the dose of PPA is increased the systolic and diastolic blood pressures also increase.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:issn
0001-6489
pubmed:author
pubmed:issnType
Print
pubmed:volume
119
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
837-42
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1999
pubmed:articleTitle
Effects of sustained-release oral phenylpropanolamine on the nasal mucosa of healthy subjects.
pubmed:affiliation
Department of Otorhinolaryngology, Huddinge University Hospital, Karolinska Institute, Stockholm, Sweden.
pubmed:publicationType
Journal Article, Clinical Trial, Comparative Study, Randomized Controlled Trial, Controlled Clinical Trial, Research Support, Non-U.S. Gov't