5 S's
Infant Soothing Techniques
Dr. Karp's calming method — replicates in-utero sensations.
What this mnemonic does is give exhausted parents a five-step protocol for an inconsolable infant under three months — the period when colic peaks and SIDS risk drives sleep counseling. Swaddle (snug, arms in), Side or Stomach position (only while held, never for sleep), Shush (loud, white-noise loud), Swing (small, rhythmic motion), Suck (pacifier or breast). The technique replicates womb sensations and works because it triggers the calming reflex. AANP exam questions use the 5 S's to test parent counseling and to confirm you know the back-to-sleep rule still applies the moment the baby is set down — supine sleep on a firm surface, no soft bedding.
- SSwaddleSnug blanket wrap with arms down.
- SSide or stomach positionFor SOOTHING only. Sleep always supine (AAP Safe Sleep).
- SShushLoud white-noise sound near the ear — mimics womb.
- SSwingRhythmic gentle side-to-side or up-down motion.
- SSuckBreastfeed, bottle, or pacifier.
Clinical Context
Harvey Karp's "Happiest Baby on the Block" method for calming colicky or fussy infants. Works by triggering the calming reflex — a neurologic response to in-utero-like sensory input, present through roughly 3-4 months of age.
Critical safety note: side/stomach position is for SOOTHING a crying awake infant only — NEVER for sleep. All sleep must be supine on a firm flat surface (AAP Safe Sleep to prevent SIDS). AANP pediatric counseling questions pair the 5 S's with safe-sleep education in the same stem.
Related Mnemonics
Sources
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