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Thermoregulation- the Giraffe bed The Giraffe bed provides the most self-contained environment for the micropremie by converting from open bed warmer to isolette. The Giraffe is designed to provide better thermal stability and less evaporative fluid loss in the early days of life of an extremely low birth weight infant. Therefore, every effort should be made to admit infants less than 1000g into Giraffe beds. If supply permits, Giraffe beds also offer benefits for larger premies in the 1000-1500g weight range as well. Tips on Admitting to the Giraffe bed To prepare the bed for any admission:
If you are anticipating an admission of known gestational age or weight, the Giraffe bed may be prepared slightly differently.
Giraffe Troubleshooting Place the skin temp probe in the right axilla. The baby’s axillary skin temp should be in the normal range before closing the canopy. Aim for a skin temp of approximately 36.5°C, but tolerate baby’s temp within a range of normal (36.5 – 37.5°C.) Giraffe’s computer software uses a cascade algorithm to titrate the temp gradually. In "Baby" mode, the ambient temp in the bed should increase or decrease by 0.1°C every 15 minutes to regulate baby’s temperature. If the baby’s temperature continues to trend outside the limits of normal, you may need to change the set (control) temp. By placing more immature babies in an isolette environment earlier in life, air temperatures in the Giraffe may be higher than you’d expect. 39°C air temp in the Giraffe incubator is equivalent to 100% power on a radiant warmer heat bar. Be sure to use the Comfort Zone information rather than old temp charts to set the bed temp range. To perform cares or procedures on an infant in the Giraffe incubator, use the "Air Boost" to create a warm air barrier to minimize disruption of the thermal environment. Air Boost will last for 20 minutes unless reset. The baby can be made more accessible for complicated procedures within the isolette by turning the infant on the "baby susan." However, if multiple procedures or major interventions need to be performed, open the canopy and use the bed as a radiant warmer on manual mode to maintain thermal stability. Remember that all humidity is lost when you convert to radiant heat and evaporative losses increase. Furthermore, going from open to closed and vice versa creates an air shift over the baby. Covering the infant with a blanket for 1-2 minutes before the change may help. Humidity Increasing ambient humidity decreases evaporative water losses which are particularly high in VLBW (<1500g) infants and extremely high in ELBW (<1000g) micropremies. In this population, use humidity for at least two weeks. You may use humidity for 3-4 weeks if necessary. Using humidity enables the baby to be maintained in a thermoneutral environment at a lower ambient temperature. The Giraffe bed provides humidity via a vaporizing system designed to prohibit the growth of gram-negative organisms (especially Pseudomonas.) Use humidity at 60 – 70%. After 2 - 4 weeks, wean humidity over 12- 24 hours. If the baby’s temperature becomes unstable during the wean, wait for several days before resuming the weaning process. When humidity is decreased to 40%, it may be discontinued. Discussed at the Nursery Policy & Procedure Meeting 2/21/01. References: Sinclair J. Servo-control of abdominal skin temperature at 36ْC in low birth weight infants. Cochrane Systematic Reviews. http://www.nichd.nih.gov/cochraneneonatal/SINCLAIR/SINCLAIR.HTM |