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Medical Science Monitor Basic Research


eISSN: 1643-3750

Efficacy and Safety of Sea Salt-Derived Physiological Saline Nasal Spray as Add-On Therapy in Patients with Acute Upper Respiratory Infection: A Multicenter Retrospective Cohort Study

Min Jiang, Junwen Chen, Yuanhua Ding, Chenxi Gan, Ya Hou, Junge Lei, Mengzhi Wan, Xing Li, Zuke Xiao

Department of Respiratory and Critical Care Medicine, Jiangxi Provincial People’s Hospital Affiliated to Nanchang University, Nanchang, Jiangxi, China (mainland)

Med Sci Monit 2021; 27:e929714

DOI: 10.12659/MSM.929714

Available online: 2021-02-25

Published: 2021-05-11


BACKGROUND: The purpose of this study was to assess the effects of seawater on nasal congestion and runny nose symptoms in adults with an acute upper respiratory infection (URI).
MATERIAL AND METHODS: This was a multicenter retrospective cohort trial of patients with acute URI and symptoms of nasal congestion and runny nose. The patients were assigned to 2 groups and were administered regular non-drug supportive treatment or supportive treatment with nasal irrigation with sea salt-derived physiological saline. The primary efficacy endpoint was the effective rate (percentage of patients with ≥30% symptom score reduction from baseline for nasal congestion and runny nose).
RESULTS: In total, 144 patients were enrolled, including 72 in each group, and 143 patients completed the study. Both groups had similar demographics and vital signs. The effective rates for nasal congestion and runny nose were significantly increased in the seawater group compared with patients in the control group (87.3% vs 59.7% for nasal congestion; 85.9% vs 61.1% for runny nose; both P<0.001). In addition, the 2 groups showed markedly different degrees of patient symptom score improvement in sleep quality and appetite (both P<0.01), but not in cough and fatigue (both P>0.05). There were no adverse events in either group.
CONCLUSIONS: The sea salt-derived physiological saline nasal spray device satisfactorily improved nasal congestion, runny nose, sleep quality, and appetite in adults with URI, with no adverse effects.

Keywords: Clinical Trial, Nasal lavage, Respiratory Tract Infections