Ketamine gargle significantly reduced the incidence and severity of POST.

Prophylactic low-dose ketamine was found to be effective in preventing postoperative shivering.

In a heterogeneous ICU population, an abnormal microvascular flow index was present in 17% of patients. This was not associated with mortality. However, in patients with tachycardia, an abnormal microvascular flow index was independently associated with an increased risk of hospital death.

Intraoperative dexmedetomidine infusion may be effective in the prevention of post-anaesthetic shivering.

Melatonin premedication was associated with preoperative anxiolysis and sedation without postoperative impairment of psychomotor performance.