LMA probably leads to lower failure with primary modality of resuscitation compared with BMV (moderate certainty).
LMA showed no clear difference in death or HIE compared with endotracheal intubation (low certainty).
LMA probably leads to lower need for intubation compared with BMV (moderate certainty).
LMA probably leads to lower apgar score ≤ 7 at 5 minutes compared with BMV (moderate certainty).
LMA probably leads to lower admission to NICU compared with BMV (moderate certainty).
LMA showed no clear difference in death or HIE compared with BMV (low certainty).
It is very uncertain whether LMA changes failure to correctly insert the device compared with endotracheal intubation (very low certainty).
It is very uncertain whether LMA changes successful insertion of device at first attempt compared with endotracheal intubation (very low certainty).
LMA showed no clear difference in apgar score ≤ 7 at 5 minutes compared with endotracheal intubation (low certainty).
LMA showed no clear difference in soft tissue trauma after device inserted compared with endotracheal intubation (low certainty).
Early removal of the LMA showed no clear difference in laryngospasm (immediate) compared with late removal of the LMA after general anaesthesia (low certainty).
It is very uncertain whether early removal of the LMA changes desaturation (immediate) compared with late removal of the LMA after general anaesthesia (very low certainty).
Early removal of the LMA may leads to higher airway obstruction (immediate) compared with late removal of the LMA after general anaesthesia (low certainty).
It is very uncertain whether early removal of the LMA changes coughing (immediate) compared with late removal of the LMA after general anaesthesia (very low certainty).
PLMA probably leads to lower episodes of hypoxaemia in PACU < 92% oxygen saturation compared with tracheal tube (moderate certainty).
The review found no eligible studies for this question.
It is very uncertain whether PLMA changes laryngospasm/bronchoconstriction between induction and recovery compared with tracheal tube (very low certainty).