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Methods for Detecting Cough and Airway Inflammation in Mice
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Quantifying chronic cough: objective versus subjective measurements.

Shoaib Faruqi1, Rachel Thompson, Caroline Wright

  • 1Division of Cardiovascular and Respiratory Studies, Hull York Medical School, University of Hull, Castle Hill Hospital, Cottingham, UK. sfaruqi@doctors.net.uk

Respirology (Carlton, Vic.)
|November 9, 2010
PubMed
Summary
This summary is machine-generated.

Objective cough monitoring, quality of life questionnaires, and cough reflex tests are reproducible in chronic cough patients. Cough counts correlate well with subjective assessments, offering a comprehensive objective measure.

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Area of Science:

  • Pulmonology
  • Clinical Medicine
  • Respiratory Medicine

Background:

  • Chronic cough assessment has advanced with objective monitoring and subjective questionnaires.
  • Experimental cough induction aids in evaluating the cough reflex.
  • Reproducibility and association between these assessment methods require investigation.

Purpose of the Study:

  • To assess the reproducibility of objective cough monitoring and subjective quality of life questionnaires.
  • To evaluate the association between cough reflex sensitivity and objective/subjective measures.
  • To determine the reliability of various chronic cough assessment tools.

Main Methods:

  • Prospective observational study of 25 chronic cough patients (>6 months duration).
  • Initial 24-h cough recording, Leicester Cough Questionnaire, Symptom Assessment Score, Visual Analogue Score, and capsaicin cough challenge.
  • All assessments repeated at an 8-week follow-up visit.

Main Results:

  • Cough counts showed significant reproducibility (r = 0.9, P < 0.01) between visits.
  • Subjective assessments (questionnaires, visual analogue scores) were also highly reproducible (r = 0.6-0.9, P < 0.01).
  • Cough counts correlated with subjective measures (r = 0.4-0.6, P < 0.01) and cough reflex sensitivity.

Conclusions:

  • Objective and subjective methods for assessing chronic cough are reproducible.
  • Cough counting demonstrates a strong correlation with subjective assessments and cough reflex sensitivity.
  • Objective cough counting may serve as a valuable global synthesis of cough assessment.