The results of cardiopulmonary exercise test in healthy Korean children and adolescents: single center study.

PURPOSE: The cardiopulmonary exercise test (CPET) is an important clinical tool for evaluating exercise capacity and is frequently used to evaluate chronic conditions including congenital heart disease. However, data on the normal CPET values for Korean children and adolescents are lacking. The aim of this study was to provide reference data for CPET variables in children and adolescents. METHODS: From August 2006 to April 2009, 76 healthy children and adolescents underwent the CPET performed using the modified Bruce protocol. Here, we performed a medical record review to obtain data regarding patient' demographics, medical history, and clinical status. RESULTS: The peak oxygen uptake (VO2Peak) and metabolic equivalent (METMax) were higher in boys than girls. The respiratory minute volume (VE)/CO2 production (VCO2) slope did not significantly differ between boys and girls. The cardiopulmonary exercise test data did not significantly differ between the boys and girls in younger age group (age, 10 to 14 years). However, in older age group (age, 15 to 19 years), the boys had higher VO2Peak and METMax values and lower VE/VCO2 values than the girls. CONCLUSION: This study provides reference data for CPET variables in case of children and adolescents and will make it easier to use the CPET for clinical decision-making.

Clinical outcomes of cerebral infarctions in neonates.

Cerebral infarctions are uncommon in neonates. However, they should be considered among causes of neonatal seizures. We describe seven neonates with cerebral infarctions. Clinical presentations, perinatal history, perinatal risk factors, cranial magnetic resonance imaging and electroencephalography findings, thrombophilic factors, and clinical outcomes were reviewed. Six patients manifested seizures, whereas one exhibited cyanosis. Six neonates manifested left middle cerebral artery infarctions, and one exhibited a borderzone infarction between the anterior cerebral and middle cerebral arteries. Electroencephalograms indicated epileptiform discharges on the left hemisphere in three neonates with left middle cerebral artery territory infarctions, and epileptiform discharges on both hemispheres in one patient. At most recent follow-up visit, five patients had achieved normal development, whereas one exhibited right hemiparesis and aphasia, and another manifested toe-in gait. These findings may help predict neurodevelopmental outcomes in neonates with cerebral infarctions.