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Observational Study
. 2017 Mar 9;7(3):e012789.
doi: 10.1136/bmjopen-2016-012789.

Clinical characteristics associated with diagnostic delay of pulmonary embolism in primary care: a retrospective observational study

Janneke M T Hendriksen  1 , Marleen Koster-van Ree  1 , Marcus J Morgenstern  1 , Ruud Oudega  1 , Roger E G Schutgens  2 , Karel G M Moons  1 , Geert-Jan Geersing  1
Affiliations
Observational Study

Clinical characteristics associated with diagnostic delay of pulmonary embolism in primary care: a retrospective observational study

Janneke M T Hendriksen et al. BMJ Open. .

Abstract

Objectives: To evaluate the extent of delay in the diagnosis of pulmonary embolism (PE) in primary care, and to identify determinants that are associated with such diagnostic delay.

Design: Retrospective observational study.

Setting: 6 primary care practices across the Netherlands.

Participants: Data from patients with an objectively confirmed diagnosis of PE (International Classification of Primary Care (ICPC) code K93) up to June 2015 were extracted from the electronic medical records. For all these PE events, we reviewed all consultations with their general practitioner (GP) and scored any signs and symptoms that could be attributed to PE in the 3 months prior to the event. Also, we documented actual comorbidity and the diagnosis considered initially.

Primary and secondary outcome measures: Delay was defined as a time gap of >7 days between the first potentially PE-related contact with the GP and the final PE diagnosis. Multivariable logistic regression analysis was performed to identify independent determinants for delay.

Results: In total, 180 incident PE cases were identified, of whom 128 patients had 1 or more potential PE-related contact with their GP within the 3 months prior to the diagnosis. Based on our definition, in 33 of these patients (26%), diagnostic delay was observed. Older age (age >75 years; OR 5.1 (95% CI 1.8 to 14.1)) and the absence of chest symptoms (ie, chest pain or pain on inspiration; OR 5.4 (95% CI 1.9 to 15.2)) were independent determinants for diagnostic delay. A respiratory tract infection prior to the PE diagnosis was reported in 13% of cases without delay, and in 33% of patients with delay (p=0.008).

Conclusions: Diagnostic delay of more than 7 days in the diagnosis of PE is common in primary care, especially in the elderly, and if chest symptoms, like pain on inspiration, are absent.

Keywords: PRIMARY CARE; diagnostic delay; pulmonary embolism; venous thromboembolism.

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Conflict of interest statement

Competing interests: None declared.

Figures

Figure 1
Figure 1
Flow chart of the selection of pulmonary embolism cases in primary care.
See this image and copyright information in PMC

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