id	author	title	date	pages	extension	mime	words	sentences	flesch	summary	cache	txt
cord-320266-7gzx6ljt	Vigneshwar, Navin G.	Positive tracheal SARS-CoV-2 RNA test after three negative SARS-CoV-2 RNA tests in a patient with COVID-19	2020-06-12		.txt	text/plain	939	70	52	Perioperative guidelines for patients with suspected coronavirus disease (COVID-19) often rely on nasopharyngeal swab testing for the presence of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) RNA. Herein, we report the case of a patient with three consecutive negative nasopharyngeal swab tests followed by a positive tracheal aspirate test for SARS-CoV-2 RNA (Figure 1 ). On admission, a viral respiratory panel and two nasopharyngeal swab SARS-CoV-2 RT-PCR tests separated by four hours were negative. On hospital day 1, the patient's hypoxia improved, and results from a repeat SARS-CoV-2 RT-PCR test from a nasopharyngeal swab were negative. During the novel influenza A (H1N1) pandemic, approximately 10% of patients showed positive RT-PCR test results in respiratory secretions after intubation when prior tests on nasopharyngeal swab gave negative results. Following further deterioration of the patient's respiratory status and endotracheal intubation, a tracheal sample was positive for SARS-CoV-2 RNA.	./cache/cord-320266-7gzx6ljt.txt	./txt/cord-320266-7gzx6ljt.txt