Elevated level of creatine phosphokinase in newborn: Clinical significance and association with congenital muscle diseases.

OBJECTIVES: To establish the normal Creatine phosphokinase (CPK) range in newborns of all 3 modes of delivery and prove that high CPK level in neonates is not specific a indicator for muscular pathology. METHODS: This is a prospective cohort study that is conducted in King Abdulaziz Medical City and King Abdullah Specialized Children Hospital in Riyadh and included 504 term neonates who were born between March 2021 and August 2021. Two hundred and fifty three were males and 251 were females. Data and consents were managed and collected using 2 coordinators. RESULTS: Duration of the second stage of labor, age on the first CPK test and fetal gestational age were significantly correlated with CPK values (r=0.197, r=-0.234, r=0.274, respectively). The normal ranges for each delivery type were 334 U/L-2667U/L in normal spontaneous vaginal delivery, 265U/L-1182U/L in elective cesarean section, and 223U/L-3082 U/L in emergency cesarean section. CONCLUSION: The CPK was elevated in all neonates in all 3 modes of deliveries. An elevated levels of CPK in neonates is not a specific indicator for any congenital muscular pathology.

Risk factors for isolated periventricular leukomalacia.

Periventricular leukomalacia, a major cause of neurologic disabilities in preterm infants, can be isolated or associated with intraventricular and periventricular hemorrhage. To determine the risk factors for isolated periventricular leukomalacia, we retrospectively studied the characteristics of all very low birth weight infants affected by isolated periventricular leukomalacia who were delivered over a 5-year period and compared them with a control group of very low birth weight infants, matched within 2 weeks for gestational age, with no central nervous system pathology, and born during the same period. In total, 20 affected infants were compared with 98 control infants. Neonatal sepsis caused by coagulase-negative Staphylococcus (P = 0.014) and neonatal seizure (P = 0.026) were associated with isolated periventricular leukomalacia only on univariate analysis. Three variables demonstrated statistically significant associations with isolated periventricular leukomalacia on both univariate and multivariate logistic regression analysis as independent risk factors: birth weight (odds ratio, 4.31; 95% confidence interval, 1.54-12.06; P = 0.005), early neonatal hypotension requiring combined inotropic therapy (odds ratio, 4.90; 95% confidence interval; 1.22-19.68, P = 0.025), and delayed surgical closure of hemodynamically significant patent ductus arteriosus beyond age 7 days (odds ratio, 1.20; 95% confidence interval, 1.06-1.35; P = 0.003).

Can Doppler sonography be used to diagnose neonatal cerebral infarction caused by portal vein thrombosis.

Neonatal cerebral infarction is a serious and disabling condition. It is extremely rare if it occurs in association with portal vein thrombosis. We are reporting 2 cases of neonatal cerebral infarction with this etiology. The unique mechanism of cerebral infarction will be discussed. We propose that in the absence of any identifiable cause for the cerebral infarction, portal vein thrombosis should be considered and a Doppler sonography for the portal system is worth carrying out to confirm the diagnosis.