1Nizzar, Lab SMF Pulmnologi dan Kedokteran Respirasi Fakultas, Kedokteran Universitas Brawijaya, Malang, Indonesia
2Susanthy, Lab SMF Pulmnologi dan Kedokteran Respirasi Fakultas, Kedokteran Universitas Brawijaya, Malang, Indonesia
3Garinda, Lab SMF Pulmnologi dan Kedokteran Respirasi Fakultas, Kedokteran Universitas Brawijaya, Malang, Indonesia
*Corresponding author email id: nizzar.ichsan@gmail.com
Online published on 29 January, 2021.
COVID-19 is still a worldwide pandemic. Chest X-ray (CXR) is the simplest diagnostic tool that is often used to diagnose Community-Acquired Pneumonia (CAP) in which COVID-19 is also included. It has the advantage because it can be a simpler diagnostic tool over thorax CT-scan. This study aimed to analyze the correlation between CXR and P/F ratio of suspected COVID-19 patients.
We conducted a correlative analytic cross-sectional study, on 69 patients in the New, Emerging, and Re-emerging Infectious Disease ward of Saiful Anwar Hospital, Malang, Indonesia from March to May 2020. The samples were divided into 2 groups, COVID-19 patients who were positive for SARS CoV-2 by RT-PCR and COVID-19 patients who were negative by RT-PCR.
We analyzed CXR using the RALE (radiographic assessment of lung edema) score modification to assess the lung involvement radiographically. The RALE score average value of the Positive-PCR COVID-19 group was 5.4 which is higher than the Negative-PCR COVID-19 group (3.0). The P/F ratio from both groups was under 300, but the P/F ratio of the positive-PCR COVID-19 group was lower (185) than the negative-PCR COVID19 group (261). In Spearman correlation test, there was a significant negative correlation between RALE score and P/F ratio in the COVID 19 PCR positive group (p= 0.031; r= -0.365) and there was no correlation in the PCR negative group (p= 0.229; r= -0.223).
Our study found a negative correlation between RALE score and P/F ratio in confirmed COVID-19 patients.
COVID-19, CXR, RALE score, P/F ratio, Severity
