Evidence map›Paper›PMID 11318774›Full record

Trial reportBritish journal of clinical pharmacology2001

Pharmacokinetics and systemic beta2-adrenoceptor-mediated responses to inhaled salbutamol.

S J Fowler, B J Lipworth

Abstract readClinical TrialRandomized Controlled Trial
In one paragraph

Trial report in British journal of clinical pharmacology, 2001. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

9 citing papers in PubMed.

  1. Trial
  2. Trial
  3. Trial
  4. Trial
  5. Review
  6. Do medicines commonly used by older adults impact their nutrient status?Exploratory research in clinical and social pharmacy · 2021
    Review
  7. Article
  8. Article
  9. Is postural tremor size controlled by interstitial potassium concentration in muscle?Journal of neurology, neurosurgery, and psychiatry · 2004
    Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

2 authors.

S J FowlerAsthma and Allergy Research Group, Department of Clinical Pharmacology and Therapeutics, Ninewells Hospital and Medical School, University of Dundee, UK.
B J Lipworth

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

aimsTo examine whether systemic beta2-adrenoceptor responses, such as tachycardia, tremor and hypokalaemia, can be used as a surrogate for the 20 min pharmacokinetic profile of inhaled salbutamol.

methodsA retrospective analysis of eight separate published studies in healthy volunteers was performed, each with an identical protocol evaluating the early lung absorption profile of a nominal 1200 microg dose of salbutamol given by different inhaler devices. Peak postural finger tremor, plasma potassium and heart rate were assessed.

resultsWe found the maximum (Cmax) and average (Cav) plasma concentrations of salbutamol to be correlated (P < 0.0001) to change in plasma potassium (Cmax r = 0.904; Cav r = 0.899) and tremor (Cmax r = 0.875; Cav r = 0.857). No significant correlations existed between change in heart rate and Cmax (r = 0.425) or Cav (r = 0.415).

conclusionsSystemic beta2-adrenoceptor responses, in particular hypokalaemia and tremor, but not heart rate, appear to be good surrogates for evaluating the lung delivery of inhaled salbutamol. Consequently it is suggested that potassium or tremor responses may be used to evaluate the relative lung delivery of salbutamol from different inhaler devices.

Indexed as

Administration, InhalationAdrenergic beta-AgonistsAdultAlbuterolCross-Over StudiesDouble-Blind MethodHeart RateHumansLungPotassiumRegression AnalysisTremorAdrenergic beta-AgonistsAlbuterolPotassium

Identifiers

PMID11318774
PMCPMC2014458

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.