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Diagnostic performance of reproducible chest wall tenderness to rule out acute coronary syndrome in acute chest pain: a prospective diagnostic study
  1. Christoph Gräni1,
  2. Oliver Senn2,
  3. Manuel Bischof1,
  4. Pietro E Cippà3,
  5. Till Hauffe1,
  6. Lukas Zimmerli1,4,
  7. Edouard Battegay1,4,
  8. Daniel Franzen1,5
  1. 1Division of Internal Medicine, University Hospital Zurich, Zurich, Switzerland
  2. 2Institute of General Practice and Health Services Research, University of Zurich, Zurich, Switzerland
  3. 3Division of Nephrology, University Hospital Zurich, Zurich, Switzerland
  4. 4Center of Competence Multimorbidity and University Research Priority Program Dynamics of Healthy Aging, University of Zurich, Zurich, Switzerland
  5. 5Pulmonary Division, University Hospital Zurich, Zurich, Switzerland
  1. Correspondence to Dr Christoph Gräni; christoph.graeni{at}usz.ch

Abstract

Objectives Acute chest pain (ACP) is a leading cause of hospital emergency unit consultation. As there are various underlying conditions, ranging from musculoskeletal disorders to acute coronary syndrome (ACS), thorough clinical diagnostics are warranted. The aim of this prospective study was to assess whether reproducible chest wall tenderness (CWT) on palpation in patients with ACP can help to rule out ACS.

Methods In this prospective, double-blinded diagnostic study, all consecutive patients assessed in the emergency unit at the University Hospital Zurich because of ACP between July 2012 and December 2013 were included when a member of the study team was present. Reproducible CWT on palpation was the initial step and was recorded before further examinations were initiated. The final diagnosis was adjudicated by a study-independent physician.

Results 121 patients (60.3% male, median age 47 years, IQR 34–66.5 years) were included. The prevalence of ACS was 11.6%. Non-reproducible CWT had a high sensitivity of 92.9% (95% CI 66.1% to 98.8%) for ACS and the presence of reproducible CWT ruled out ACS (p=0.003) with a high negative predictive value (98.1%, 95% CI 89.9% to 99.7%). Conversely non-reproducible CWT ruled in ACS with low specificity (48.6%, 95% CI 38.8% to 58.5%) and low positive predictive value (19.1%, 95% CI 10.6% to 30.5%).

Conclusions This prospective diagnostic study supports the concept that reproducible CWT helps to rule out ACS in patients with ACP in an early stage of the evaluation process. However, ACS and other diagnoses should be considered in patients with a negative CWT test.

Trial registration number ClinicalTrial.gov: NCT01724996.

  • chest wall tenderness
  • acute chest pain
  • thoracic pain
  • emergency admission

This is an Open Access article distributed in accordance with the Creative Commons Attribution Non Commercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited and the use is non-commercial. See: http://creativecommons.org/licenses/by-nc/4.0/

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