Table 2.
Behavioural code definitions
| Mutually exclusive behavioural classes |
| Arms and/or hands |
| Relaxed: Arms and/or hands relaxed, normal muscle tone, not moving, flexing, or extending; there is visible muscle tone in the arm/hand as evidenced by arm/hand not lying flaccidly. |
| Extending: Arms and/or hands extended, fingers may be splayed outward or arm may be stretched outward or pushing outward. |
| Moving: Arms and/or hands moving. |
| Flaccid: Arms and/or hands flaccid, hanging loosely, droopy. |
| Eyes |
| Open: Eyes open. |
| Closed, soft: Eyes closed softly as if asleep. |
| Closed, squeezed: Eyes closed tightly, scrunched, squeezing eyes shut. |
| Flutter: Less than one second between blinks (rapid back and forth eye closing and re-opening), or repeated eye opening and closing. |
| Eyebrows |
| Relaxed: Eyebrows are relaxed, not raised. |
| Raised: Eyebrows are raised. |
| Head |
| Still: Head is still, not moving. |
| Moving: Head is moving – helping to search for nipple, moving toward nipple in acceptance or head is avoiding the nipple; may pull away, move side to side, or push forward. |
| Bottle-in-mouth |
| No milk drooling out while nipple is completely seated in the mouth. |
| Milk drooling out while nipple is completely seated in the mouth. |
| Breath quality |
| Quiet: Breath sounds are quiet, normal, easy, non-laboured; may be shallow or deep, fast or slow; there is a clear sound to the passage of air (no obstruction with fluid or constriction). |
| Noisy: Breath sounds are noisy. There is obstruction to the free flow of air. They may be grunty sounding; a dry, coarse sound; no fluid in airway; child may be pushing air outward noisily; may be breathing rapidly or slowly as in a snore; a sound of constriction at the back of the throat. A non-laboured whistle alone would not be noisy breathing. Whistle plus some indication of laboured breathing is noisy breathing (a fluid ‘catch’ sound, a clear obstruction of airflow, or gurgly breath). Alternatively, the noisy breathing may be a wet, gurgly sound; fluid in the child's airway (nasal or throat) that air is audible passing over or through. May be a sound of a fluid ‘catch’ at the end of inspiration or expiration. |
| Absent for at least 4 seconds (apnea). During a time when breath sounds are audible you detect no breathing for ≥4 seconds. |
| Sucking. |
| Pausing: Period of no sucking. |
| Single behavioural events |
| Hiccups. |
| Cough. |
| Startle. |