Safety and Feasibility of Fan Therapy for Dyspnea: A Scoping Review

Fan therapy is a non-pharmacological approach useful in terminally ill patients that relieves dyspnea by directing a fan to blow air on one side of the patient's face. To date, there has been no systematic review of fan therapy for critically ill patients in the intensive care unit. This scoping review aimed to provide a comprehensive overview of fan therapy studies published to date, clarify the therapeutic intervention methods of fan therapy, evaluate its safety according to existing literature, and explore its potential use in critically ill patients. A scoping review was conducted using the Joanna Briggs Institute methodology. This scoping review follows the Preferred Reporting Items for Systematic Reviews and Meta-Analyses extension of the scoping reviews statement. All published studies conducted on patients who received fan therapy regardless of age, disease, setting, phase, country, or follow-up duration were included. The data sources included Medical Literature Analysis and Retrieval System Online, Embase, Cochrane Central Register of Controlled Trials, and Cumulative Index to Nursing and Allied Literature databases. Of the 685 studies obtained, 15 were included, comprising patients with terminal cancer and chronic lung diseases. The most common intervention was a single five-minute intervention for dyspnea at rest. The studies on patients receiving oxygen therapy did not report adverse events or worsening of blood pressure, pulse rate, respiratory rate, or SpO₂ levels. However, there are no studies in the literature on the use of fan therapy for critically ill patients. Nevertheless, previous studies suggest that fan therapy is safe.