False-positive reverse transcriptase polymerase chain reaction screening for SARS-CoV-2 in the setting of urgent head and neck surgery and otolaryngologic emergencies during the pandemic: Clinical implications

Andrew P Katz, Francisco J Civantos, Zoukaa Sargi, Jason M Leibowitz, Elizabeth A Nicolli, Donald Weed, Alexander E Moskovitz, Alyssa M Civantos, David M Andrews, Octavio Martinez, Giovana R Thomas, Andrew P Katz, Francisco J Civantos, Zoukaa Sargi, Jason M Leibowitz, Elizabeth A Nicolli, Donald Weed, Alexander E Moskovitz, Alyssa M Civantos, David M Andrews, Octavio Martinez, Giovana R Thomas

Abstract

Background: No reports describe falsepositive reverse transcriptase polymerase chain reaction (RT-PCR) for novel coronavirus in preoperative screening.

Methods: Preoperative patients had one or two nasopharyngeal swabs, depending on low or high risk of viral transmission. Positive tests were repeated.

Results: Forty-three of 52 patients required two or more preoperative tests. Four (9.3%) had discrepant results (positive/negative). One of these left the coronavirus disease (COVID) unit against medical advice despite an orbital abscess, with unknown true disease status. The remaining 3 of 42 (7.1%) had negative repeat RT-PCR. Although ultimately considered falsepositives, one was sent to a COVID unit postoperatively and two had urgent surgery delayed. Assuming negative repeat RT-PCR, clear chest imaging, and lack of subsequent symptoms represent the "gold standard," RT-PCR specificity was 0.97.

Conclusions: If false positives are suspected, we recommend computed tomography (CT) of the chest and repeat RT-PCR. Validated serum immunoglobulin testing may ultimately prove useful.

Keywords: COVID-19; RT-PCR; head and neck surgery; pandemic; preoperative testing.

© 2020 Wiley Periodicals, Inc.

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Source: PubMed

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