Not an erratic idle like a dirty throttle body gives you. That goes up and down when the AC compressor kicks on, and can send the idle down to 300-400 RPM and stall the engine out. Then it overshoots when the compressor cycles off.
death rattle. a sound produced by a person immediately preceding death, resulting from the passage of air through the mucus in the throat.
By Mayo Clinic Staff. Sudden infant death syndrome (SIDS) is the unexplained death, usually during sleep, of a seemingly healthy baby less than a year old. SIDS is sometimes known as crib death because the infants often die in their cribs. Although the cause is unknown, it appears that SIDS may be associated with abnormalities in the portion of an infant's brain that controls breathing and arousal from sleep. Researchers have discovered some factors that may put babies at extra risk.