Jindal P, Rizvi A, Sharma JP. Middle East J Anesthesiol. 2009; 20(1): 53-58
This study compared i-gel® to two other supraglottic airways in respect of haemodynamic changes, including heart rate, systolic and diastolic blood pressure, mean arterial pressure and rate pressure product. The authors concluded that ‘i-gel® effectively conforms to the perilaryngeal anatomy despite the lack of an inflatable cuff, it consistently achieves proper positioning for supraglottic ventilation and causes fewer haemodynamic changes as compared to other supraglottic airway devices.’
Link to abstract.