ABSTRACT
Background: The COVID-19 pandemic has contributed to lower hospital admissions and higher mortalities associated with chronic conditions such as cancer and cardiovascular diseases. The Rapid Access Lung Clinic (RALC), established in 2009 for immediate assessment of individuals at risk of lung cancer, has experienced reduced functioning particularly during the pandemic peaks in Ireland. Therefore, we undertook a retrospective chart review of the 2019-2021 referrals and attendances at the Cork University Hospital (CUH) RALC to determine the impact of COVID-19 on this pathway. Methods: The medical charts of patients referred to CUH RALC from 03/2019 to 02/2020 (period I), and from 03/ 2020 to 02/2021 (period II), were reviewed after ethical approval was obtained. Clinicodemographic characteristics including age, sex, and hometown were extracted. Average time to acquire the first CT scan, consultation at RALC, and receiving a diagnosis of cancer were calculated using the date of referral and compared between periods I and II using the t-test. Frequency and the stages of cancer diagnosis in periods I and II were compared using a Chi-squared test. Progression-free and overall survivals were measured from diagnosis date until 09/2020 for period I and 09/2021 for period II. Results: Of the 1192 medical charts reviewed;687 patients in period I and 505 patients in period II were referred to RALC;indicating a 26.5% reduction in the number of referrals during the first year of the pandemic. Average monthly referrals (p = 0.008) and reviews (p = 0.017) were significantly lower in period II compared to period I and corresponded with the COVID-19 peaks in 04/2020 and 01/2021 in Ireland. However, no significant difference was seen in the length of time from referral to review at RALC (p = 0.11). There were 33% fewer post-referral CT scans performed (p = 0.032) and shorter wait times from referral to CT scan in period II (p = 0.001). The frequency of cancers detected did not differ between periods I and II. While there was no difference in the wait times from referral to diagnosis between periods, patients ultimately diagnosed with lung cancer in period II received surgery sooner than patients in period I (p = 0.024). Progression-free and overall survivals for patients diagnosed with lung cancer were comparable between periods I and II. Conclusions: Contrary to our hypothesis, we have shown that the COVID-19 pandemic had minimal impact on the performance of RALC. Shorter wait times for CT scan and surgery during the pandemic account for fewer hospital referrals and availability of CT scanner. Fewer referrals to RALC in period II may relate to the fewer patients attending their general practitioner (GP) and/or GPs raising the thresholds for referrals to RALC during the pandemic. Ultimately, a national evaluation will be required to fully determine the impact of this pandemic on lung cancer diagnosis, management, and outcomes in Ireland.