TABLE 2.

Definitions of Mechanisms for Suffocation or Possible Suffocation

SUID Category	Definition
Mechanisms for suffocation	Factors in the sleep environment that caused or may have caused suffocation.
Overlay	Shared sleep surface with other person overlaying or rolling on top of or against infant while sleeping and obstructing airway or compressing the neck or chest area and preventing respiration.
Soft bedding	Soft or loose bedding, pillows, or stuffed toys on sleep surface obstructing airway. Infant found face down or other position with airway obstruction.
Wedging or entrapment	Wedging and entrapment of an infant between 2 objects such as a mattress and wall, bed frame, or furniture causing airway obstruction or compressing chest and preventing respiration.
Other	Other factors in the sleep environment causing an airway obstruction, for example, a situation in which an infant is sleeping in a car seat or stroller and the infant’s face or neck position results in an airway obstruction.