Effectiveness of Swallowing and Oral Care Interventions on Oral Intake and Salivary Flow of Patients Following Endotracheal Extubation at a Tertiary Care Center: A Randomized Controlled Trial

Endotracheal intubation and mechanical ventilation are the most frequently used life-sustaining interventions in critical care. Prolonged intubation can lead to post-extubation dysphagia, affecting the individual's nutritional level and communication ability. Thereupon, this study aims to assess the effectiveness of swallowing and oral care interventions in resuming oral intake and increasing salivary flow in post-extubation patients. A randomized controlled trial was conducted in critical care units of a tertiary care setting, where 92 post-extubation patients who had undergone intubation for≥48 hours were enrolled. The intervention group received swallowing and oral interventions, including safe swallowing education (SSE), toothbrushing, salivary gland massage, oral cavity, and swallowing exercises. In contrast, the control group received standard oral care every 8th hour. Oral intake was assessed daily with the Functional Oral Intake Scale, and the salivary flow measurement was assessed with oral Schirmer's test on the 1 , 3 , and 7 day after extubation. The baseline demographic and clinical characteristics showed that the groups were homogenous. The intervention group achieved total oral intake two days earlier than the control group. Findings also showed that the participants in the intervention group had a significant increase in salivary flow than in the control group on the 3 and 7 days of the intervention. Swallowing and oral care interventions help post-extubation patients resume early oral intake and increase salivary flow after prolonged intubation. Hence, it improves the patient's outcome toward a healthy life.