https://www.selleckchem.com/products/ipi-549.html Group 3 pulmonary hypertension is associated with significant morbidity and mortality. Pulmonary vasodilators offer only limited haemodynamic and exertional benefits, and lung transplantation remains the only cure for this deadly disease. The right ventricle may provide a novel intervention target. Group 3 pulmonary hypertension is associated with significant morbidity and mortality. Pulmonary vasodilators offer only limited haemodynamic and exertional benefits, and lung transplantation remains the only cure for this deadly disease. The right ventricle may provide a novel intervention target. Pre-operative anxiety is a risk factor for emergence delirium in children and a multimodal approach including sedatives and nonpharmacological measures is the current strategy to tackle this anxiety. The efficacy of oral melatonin as a component of multimodal anxiolytic strategy to decrease emergence delirium is not well studied. The aim of this study was to evaluate the efficacy of a multimodal anxiolytic strategy including oral melatonin or midazolam to decrease emergence delirium after sevoflurane anaesthesia. A randomised, double-blind, parallel arm, placebo-controlled trial. Tertiary care teaching hospital from July 2019 till January 2020. Children in the age group of 3 to 8 years who received sevoflurane anaesthesia for elective ambulatory procedures. Children were randomised to receive oral premedication with either melatonin 0.3 mg kg-1, midazolam 0.3 mg kg-1 or honey as placebo. All the children received standardised nonpharmacological measures involving multiple techniques to allay anxiee with mask induction were similar in the three groups. A multimodal anxiolytic approach including oral melatonin, as opposed to oral midazolam, significantly reduced emergence delirium after sevoflurane anaesthesia. CTRI/2019/06/019850 in Clinical Trial Registry of India (www.ctri.nic.in). CTRI/2019/06/019850 in Clinical Trial Registry