Document Type : Original Article

Authors

1 Department of Internal Medicine, School of Medicine, Ardabil University of Medical Sciences, Ardabil, Iran

2 Department of Infectious Disease and Tropical Medicine, Ardabil University of Medical Science, Ardabil, Iran

3 Social Determinants of Health Research Center, Ardabil University of Medical Sciences, Ardabil, Iran

4 Department of Anesthesiology, School of Medicine, Ardabil University of Medical Sciences, Ardabil, Iran

5 Department of Microbiology and Immunology, School of Medicine, Ardabil University of Medical Sciences, Ardabil, Iran

6 Department of Biostatistics, School of Public Health, Hamadan University of Medical Sciences, Hamadan, Iran

Abstract

BACKGROUND: Infection with COVID‑19 has resulted in considerable mortality all around the world.
This study aimed to investigate the effect of convalescent plasma on the treatment of hospitalized
patients with COVID‑19 in Imam Khomeini Hospital at Ardabil, Iran.
MATERIALS AND METHODS: In this quasi‑experimental clinical trial, patients over 18 years of age
with polymerase chain reaction‑positive COVID‑19 were admitted based on the clinical criteria of
respiratory distress with hypoxia (O2
 saturation <90) and tachypnea (R Relative Risk (RR) >24) with
moderate‑to‑severe lung involvement and in the 1st week of respiratory disease who were not intubated
were nonrandomly assigned to two groups: convalescent plasma therapy (CPT) group (197 cases)
and control group (200 cases). We used the Chi‑square, t‑test, Fisher’s exact test, and Pearson’s
correlation coefficient for statistical analysis.
RESULTS: Analyses revealed that length of stay in hospital was significantly lower in the CPT group
as compared to the control group (P = 0.001). Twenty‑four cases (22.0%) in the CPT group and
85 cases (78.0%) in the control group needed intubation. Furthermore, mortality was 17 cases (18.3%)
in the CPT group and 76 cases (81.7%) in the control group, the difference of which was also found
to be statistically significant (P < 0.05).
CONCLUSIONS: It seems that CPT can be used as an alternative treatment at the early stages of
COVID‑19 to prevent the progress of the disease, reduce the need for intubation and consequently
the length of stay in hospital, and finally, decrease mortality.

Keywords

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