What should I do before using a premature or low birth weight infant in this car seat?

Before using this restraint with a premature infant (born earlier than 37 weeks) or a newborn weighing less than 5 lbs, you must consult your doctor and have a hospital evaluation. The hospital staff should observe your infant in the properly positioned car seat for 90 to 120 minutes to check for breathing difficulties or heart rate problems. A caregiver should ride in the back seat to monitor the infant during travel, and the number and duration of trips should be minimized. (Pages 8-9)