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CT pulmonary angiography in the emergency department: utilization and positivity rates during various phases of the COVID-19 pandemic

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Abstract

Purpose

To evaluate the trends in utilization and results of computed tomography pulmonary angiography (CTPA study) for detection of acute pulmonary embolism (PE) in the Emergency Department (ED) during different phases of COVID-19 public health emergency.

Methods

We conducted a retrospective review of CTPA studies ordered through our ED in the months of March through May during five consecutive years from 2019 to 2023, designated as pre-pandemic, early, ongoing, recovery, and post-pandemic periods respectively. Collected characteristics included patient age, patient sex, and result of the study.

Results

The utilization of CTPA studies for ED patients increased during the early, ongoing, and recovery periods. CTPA study utilization in the post-pandemic period was not significantly different from the pre-pandemic period (p = 0.08). No significant difference in CTPA study utilization was noted in the other periods when stratified by age group or sex, compared to the pre-pandemic period. The positivity rate of acute PE in ED patients was not significantly different in other periods compared to the pre-pandemic period.

Conclusion

At our institution, the utilization and positivity rates of CTPA studies for the ED patients were not significantly different in the post-pandemic period compared to the pre-pandemic period. While studies spanning a larger timeframe and involving multiple institutions are needed to test the applicability of this observation to a wider patient population beyond our defined post-pandemic period, we conclude that our study provides some confidence to the ordering provider and the radiologist in embracing the end of COVID-19 public health emergency by the WHO and the United States HHS with respect to CTPA studies.

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Authors and Affiliations

  1. Department of Radiology, Mayo Clinic, Rochester, MN, USA

    Vamshi K. Mugu, Michael C. Olson & Ashish Khandelwal

  2. Department of Emergency Medicine, Mayo Clinic, Rochester, MN, USA

    Brendan M. Carr

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  1. Vamshi K. Mugu
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Correspondence to Vamshi K. Mugu.

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Mugu, V.K., Carr, B.M., Olson, M.C. et al. CT pulmonary angiography in the emergency department: utilization and positivity rates during various phases of the COVID-19 pandemic. Emerg Radiol (2024). https://doi.org/10.1007/s10140-024-02218-0

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