The distance from the skin to the subarachnoid space can be predicted in premature and formerpremature infants

Abstract

The distance between the skin and the subarachnoid space at the level of L4-5 interspace can be predicted using a statistical model based on the infant's weight and postconceptual age. Spinal ultrasound has no value in L4-5 subarachnoid space depth prediction.

Ultrasonographic determination of neonatal spinal canal depth

“…The only previous, exclusively neonatal study derived a very complicated formula based on weight and gestational age and was based on only a small sample size 9. Our study suggests a simpler formula with an improved correlation coefficient.…”

Spinal Anaesthetic Management in Paediatric Surgery

“…Studies related to vertebral anatomy in children demonstrated that the distance between the skin and the subarachnoid space at the level of the L4-5 interspace is 6 mm at birth and 10-12 mm at 1 year of age [15]. Ecoffey et al [16] reported that the distance between the skin and the subarachnoid space was 10-18 mm in the lumbar region and 7-14 mm in the thoracic region in children less than 3 years of age.…”

“…Spinal anaesthesia in infants and young children is characterised by remarkable haemodynamic stability [15,19,26]. This physiological feature can be expressed clinically as the lack of significant decreases in blood pressure and the reduced need for volume preloading or vasoconstrictor use.…”

“…Because of this feature, awake spinal anaesthesia is usually regarded as safe in high-risk infants [15].…”

“…Shenkman et al and Kachko et al [15,41] have reported studies and experiences with spinal anaesthesia in children with congenital heart disease. Researchers consider that spinal anaesthesia is a safe and effective anaesthetic and analgesic technique in patients with CHD especially neonatal period.…”