Effects of Dextrose Supplementation on Chloral Hydrate Sedation:A Double-Blinded, Randomized, Prospective Study / 전남의대학술지

Sedation plays a crucial role in successful pediatric imaging, and chloral hydrate is commonly used for this purpose. However, the challenges associated with chloral hydrate administration, such as its unpleasant taste and potential induction of vomiting, remain a concern. Sweet oral solutions have emerged as potential solutions for reducing distress and providing analgesia. This study compared the efficacy of dextrose combined with chloral hydrate with that of conventional sedation methods. This prospective, double-blind, randomized controlled clinical study enrolled 160 pediatric outpatients scheduled for echocardiography. Chloral hydrate syrup (100 mg/mL) was supplemented with a dextrose solution (dextrose group) or distilled water (control group) in a 1:10 volume ratio. The sedation achievement time, Skeie scale score, revised Face, Legs, Activity, Cry, and Consolability (FLACC) score, and side effects (nausea, vomiting, hypoxia, and respiratory depression) were assessed. No significant difference in average time to achieve sedation was observed between the dextrose and control groups (24.4±17.8 vs. 24.7±17.1 min, p=0.92). Both groups demonstrated similar levels of sedation according to the Skeie scale and mean revised FLACC score. Although the occurrence rates of nausea and vomiting had no significant differences, the dextrose group had no cases of vomiting in children aged >24 months compared to the control group, which had three cases (30%). In conclusion, the addition of dextrose to chloral hydrate did not significantly affect sedation time, anxiety, pain reduction, or occurrence of gastrointestinal complications during sedation.

Serum Ferritin as a Diagnostic Biomarker for Kawasaki Disease

Diagnosis of Kawasaki disease (KD) is occasionally delayed because it is solely based on clinical symptoms. Previous studies have attempted to identify diagnostic biomarkers for KD. Recently, patients with KD were reported to have elevated serum ferritin levels. We investigated the usefulness of the serum ferritin level as a diagnostic biomarker for distinguishing KD from other acute febrile illnesses. Blood samples were obtained from pediatric patients with KD (N = 77) and those with other acute febrile illnesses (N = 32) between December 2007 and June 2011 for measuring various laboratory parameters, including serum ferritin levels. In patients with KD, laboratory tests were performed at diagnosis and repeated at 2, 14, and 56 days after intravenous immunoglobulin treatment. At the time of diagnosis, serum ferritin levels in patients with KD (188.8 µg/L) were significantly higher than those in patients with other acute febrile illnesses (106.8 µg/L, P = 0.003). The serum ferritin cut-off value of 120.8 µg/L effectively distinguished patients with KD from those with other acute febrile illnesses, with a sensitivity and specificity of 74.5% and 83.3%, respectively. Serum ferritin may be a useful biomarker to distinguish KD from other acute febrile illnesses.

Clinical Utility of Echocardiography for the Diagnosis and Prognosis in Children with Bronchopulmonary Dsyplasia

BACKGROUND: Bronchopulmonary dysplasia (BPD) may result in chronic pulmonary artery hypertension and right ventricular (RV) dysfunction. Various echocardiographic assessments of RV dysfunction have been used to determine whether echocardiographic measurements of premature infants with BPD could provide sensitive measures of RV function that correlates with BPD severity. METHODS: Twenty-eight control subjects without BPD (non BPD group), 28 patients with mild BPD, 11 patients with moderate BPD, and six patients with severe BPD underwent echocardiograms with standard measurement such as ejection fraction by M-mode, tricuspid regurgitation pressure gradient, myocardial performance index (MPI) derived from pulse Doppler, and tissue Doppler imaging (TDI) measurements. BPD severity was classified by the NICHD/NHLBI/ORD workshop rating scale. Twenty-eight control subjects without BPD (non BPD group), 28 patients with mild BPD, 11 patients with moderate BPD, and six patients with severe BPD underwent echocardiograms with standard measurement such as ejection fraction by M-mode, tricuspid regurgitation pressure gradient, myocardial performance index (MPI) derived from pulse Doppler, and TDI measurements. BPD severity was classified by the NICHD/NHLBI/ORD workshop rating scale. RESULTS: None of the standard echocardiographic findings was significantly different between the control group and BPD groups. However, mean septal TDI-MPI of the severe BPD group (0.68 ± 0.06) was significantly (p < 0.01) higher than that of the non-BPD (0.58 ± 0.10) or the mild BPD group (0.59 ± 0.12). In addition, mean RV TDI-MPI of the severe BPD group (0.71 ± 0.13) was significantly (p < 0.05) higher than that of the non-BPD group (0.56 ± 0.08) or the mild BPD group (0.60 ± 0.125). Linear regression showed a good correlation between the severity of BPD and RV TDI-MPI (p = 0.01, R = 0.30) or septal TDI-MPI (p = 0.04, R = 0.24). CONCLUSION: Echocardiographic evaluation of RV function based on an assessment of RV TDI-MPI can provide RV dysfunction parameter in premature infants with BPD.

Total Anomalous Pulmonary Venous Return in Siblings

Total anomalous pulmonary venous return (TAPVR) is a rare and critical congenital vascular anomaly that requires an early operation. However, initial symptoms of TAPVR may be non-specific, and cardiovascular findings may be minimal. The heart may not be enlarged and there is often no cardiac murmur. Without cardiac murmur, these symptoms are similar to those of respiratory distress syndrome in newborns. Therefore, a high degree of suspicion and an early diagnosis of TAPVR are important. This condition generally occurs without a family history and has a low recurrence rate, but several familial cases, including siblings, have been reported worldwide. Additionally, several chromosomal or gene abnormalities associated with TAPVR have been reported. In the case presented here, two brothers with a 6-year age gap were diagnosed with TAPVR. Surgery was performed without cardiac or neurological complications. This is the first report on TAPVR in siblings in Korea.

Transient Complete Atrioventricular Block in a Preterm Neonate with Congenital Myotonic Dystrophy: Case Report

Congenital myotonic dystrophy (CMD) is an inherited neuromuscular disorder with cardiac rhythm abnormalities that may occur as a child grows. No report has described complete atrioventricular (AV) block detected in a neonate with CMD. We report a floppy infant of 31(+4) weeks gestation with complete AV block at birth, who was diagnosed with CMD by Southern analysis. She recovered from complete AV block 32 hr after temporary transcutaneous pacing was applied. To the best our knowledge, this is the first recorded case of a complete AV block accompanied by CMD during the neonatal period. When a newborn has a complete AV block, the physician should consider the possibility of the CMD and conduct a careful physical examination.

Random Urinary Calcium/Creatinine Ratio for Screening Hypercalciuria in Children with Hematuria

BACKGROUND: Hypercalciuria is one of the most common causes of unexplained isolated hematuria. The diagnostic methods for hypercalciuria have not yet been standardized. The aim of this study was to assess whether random urinary calcium/creatinine ratio could be used as a screening tool for hypercalciuria in children with hematuria. METHODS: This prospective study included 264 children with primary hematuria for whom both random and 24 hr urinary evaluations were performed. Pearson correlation and ROC curve were used to assess the correlations. A multiple linear regression model was used to analyze effects of age, weight, height, body mass index, and body surface area on random urinary calcium/creatinine ratio. RESULTS: There was a moderately strong correlation between random urinary calcium/creatinine ratio and 24 hr urinary calcium excretion (r=0.584, P<0.001). The most appropriate cutoff value of random urinary calcium/creatinine ratio for the estimation of hypercalciuria was 0.075 mg/mg (sensitivity, 77.8%; specificity, 64.3%; area under the curve, 0.778). Body mass index and 24 hr urinary calcium excretion significantly affected random urinary calcium/creatinine ratio with a low coefficient of determination (r2=0.380, P<0.001). CONCLUSIONS: Random urinary calcium/creatinine ratio is not suitable for screening hypercalciuria in children with hematuria. Twenty-four hour urinary analysis should be performed to diagnose hypercalciuria in children with hematuria.

Transvenous proximal closure of large congenital coronary arteriovenous fistula using the single Amplatzer vascular plug in a 3-year-old girl / 소아과

Congenital coronary arteriovenous fistulas (CCAFs) are rare coronary artery abnormalities in which blood is shunted into a cardiac chamber or great vessel. If the fistula itself is large and tortuous, it is generally recommended to occlude the fistula to prevent several complications. In approaches of transcatheter occlusion, the transvenous approach is preferred over the transarterial approach. The transvenous approach would enable the cannulation of a relatively larger catheter or sheath without potential damage to the femoral vessels or normal coronary arteries, which can occur in the transarterial approach. The transvenous approach may also minimize the blind pouch after releasing the devices. Herein, we report the success of transvenous proximal closure of a CCAF using an Amplatzer vascular plug (AVP) in a 3-year-old patient with cardiomegaly. Complete occlusion was achieved by a single AVP and thrombus formation of the distal aneurysmal portion of the fistula. We suggest that this strategy of closing the proximal end with a dilated fistula using a single AVP by the transvenous approach may be a good option in treating CCAFs in a young child.

Right ventricular failure in congenital heart disease / 소아과

Despite developments in surgical techniques and other interventions, right ventricular (RV) failure remains an important clinical problem in several congenital heart diseases (CHD). RV function is one of the most important predictors of mortality and morbidity in patients with CHD. RV failure is a progressive disorder that begins with myocardial injury or stress, neurohormonal activation, cytokine activation, altered gene expression, and ventricular remodeling. Pressure-overload RV failure caused by RV outflow tract obstruction after total correction of tetralogy of Fallot, pulmonary stenosis, atrial switch operation for transposition of the great arteries, congenitally corrected transposition of the great arteries, and systemic RV failure after the Fontan operation. Volume-overload RV failure may be caused by atrial septal defect, pulmonary regurgitation, or tricuspid regurgitation. Although the measurement of RV function is difficult because of many reasons, the right ventricle can be evaluated using both imaging and functional modalities. In clinical practice, echocardiography is the primary mode for the evaluation of RV structure and function. Cardiac magnetic resonance imaging is increasingly used for evaluating RV structure and function. A comprehensive evaluation of RV function may lead to early and optimal management of RV failure in patients with CHD.

Effect of Indomethacin Treatment in Full-term Infants with Symptomatic Patent Ductus Arteriosus / 대한주산의학회잡지

PURPOSE: Indomethacin has been reported as the prophylaxis and initial treatment of preterm infants with patent ductus arteriosus (PDA). However, there was controversy over indomethacin treatment in full-term infants with symptomatic PDA. Therefore, we evaluate the effect of indomethacin as a treatment of full-term infants with symptomatic PDA. METHODS: A retrospective study was performed to evaluate the effectiveness of indomethacin in full-term infants who had birth weight > or =2,500 g and a gestational age > or =37 weeks with symptomatic PDA at Chonnam National University Hospital between January 2007 and December 2009. According to responsiveness of indomethacin, we classified them into three groups: 1) complete responder which were completely closed after indomethacin treatment, 2) partial responder which were incompletely closed but symptoms were improved, 3) non responder which were conducted surgical ligation because did not respond. RESULTS: Among the total 29 full-term infants treated with indomethacin, 13 (44.8%) were complete responder, 8 (27.6%) were partial responder, and 8 (27.6%) were non responder. There were no significant differences in birth weight, narrow diameter of PDA, and dose of indomethacin between three groups. However, the age at initiation of treatment using indomethacin of complete (4.8+/-4.5 days, P=0.03) and partial responder (6.3+/-2.0 days, P=0.04) were earlier than those of non responder (13.8+/-8.1 days). CONCLUSION: Indomethacin can expect an effective treatment of PDA in full-term infants prior to surgical ligation.

Mosaic Ring Chromosome 6 in an Infant with Significant Patent Ductus Arteriosus and Multiple Congenital Anomalies

The clinical features of ring chromosome 6 include central nervous system anomalies, growth retardation, facial dysmorphism and other congenital anomalies. Ring chromosome 6 occurs rarely and manifests as various phenotypes. We report the case of mosaic ring chromosome 6 by conventional karyotyping in a 7-day-old male infant diagnosed with a large patent ductus arteriosus (PDA) with hypoplasia of aortic valve and aortic arch. These have not been previously reported with ring chromosome 6. He recovered from heart failure symptoms after ligation of the PDA. He showed infantile failure to thrive and delayed milestone in a follow-up evaluation. To the best of our knowledge, this is the first report of a Korean individual with ring chromosome 6 and hemodynamically significant PDA.

Partial anomalous pulmonary venous connection with intact atrial septum in a child with ventricular septal defect: a case report / 소아과

Partial anomalous pulmonary vein connection (PAPVC) is a rare congenital abnormal cardiac defect involving the pulmonary veins draining into the right atrium (RA) directly or indirectly by venous connection. Ninety percent of PAPVCs are accompanied by atrial septal defect (ASD). To our knowledge, there is no previous report of PAPVC with ventricular septal defect (VSD) without ASD in Korea, and in this paper, we report the first such case. A 2-day-old girl was admitted into the Chonnam National University Hospital for evaluation of a cardiac murmur. An echocardiogram revealed perimembranous VSD without ASD. She underwent patch closure of the VSD at 5 months of age. Although the VSD was completely closed, she had persistent cardiomegaly with right ventricular volume overload, as revealed by echocardiography. Three years later, cardiac catheterization and chest computed tomography revealed a PAPVC, with the right upper pulmonary vein draining into the right SVC. Therefore, correction of the PAPVC was surgically performed at 3 years of age. We conclude that it is important to suspect PAPVC in patients with right ventricular volume overload, but without ASD.

Recurrent Plastic Bronchitis in a Child with 2009 Influenza A (H1N1) and Influenza B Virus Infection

Plastic bronchitis is an uncommon disorder characterized by the formation of bronchial casts. It is associated with congenital heart disease or pulmonary disease. In children with underlying conditions such as allergy or asthma, influenza can cause severe plastic bronchitis resulting in respiratory failure. A review of the literature showed nine cases of plastic bronchitis with H1N1 including this case. We report a case of a child with recurrent plastic bronchitis with eosinophilic cast associated with influenza B infection, who had recovered from plastic bronchitis associated with an influenza A (H1N1) virus infection 5 months previously. To the best of our knowledge, this is the first case of recurrent plastic bronchitis related to influenza viral infection. If patients with influenza virus infection manifest acute respiratory distress with total lung atelectasis, clinicians should consider plastic bronchitis and early bronchoscopy should be intervened. In addition, management for underlying disease may prevent from recurrence of plastic bronchitis.

Change in Blood Pressure and Pulse Pressure in Preterm Infants After Treatment of Patent Ductus Arteriosus With Indomethacin

BACKGROUND AND OBJECTIVES: Patent ductus arteriosus (PDA) is associated with increased morbidity and mortality in premature infants. Therefore, an early diagnosis and treatment of a hemodynamically significant PDA are very important. A widened pulse pressure is considered to be a well known clinical sign of a PDA in older infants and children; however, whether this is also applicable in the case of preterm infants remains to be confirmed. The aims of this study were to investigate the change in blood pressure (BP) before and after medical treatment of a PDA with indomethacin and to evaluate if the change in the pulse pressure in preterm infants with a medically treated PDA could be used as a reliable clinical predictor of a hemodynamically significant PDA. SUBJECTS AND METHODS: Between January 2005 and June 2009, a retrospective analysis was performed in preterm infants with a hemodynamically significant PDA (PDA group, n=72) and preterm infants without a PDA (control group, n=72) at the Chonnam National University Hospital Neonatal Intensive Care Unit. The PDA was closed by treatment with indomethacin. The BP was compared between the two groups over the seven days after the first dose of indomethacin. RESULTS: In preterm infants with a hemodynamically significant PDA, the mean systolic (55.1+/-6.0 mmHg) and diastolic BPs (31.4+/-6.2 mmHg) were lower than those in the controls (mean systolic BP 58.0+/-6.4 mmHg, mean diastolic BP 34.7+/-6.0 mmHg) before indomethacin treatment. When the ductus arteriosus was successfully closed by indomethacin treatment, there was a gradual increase in both the systolic and diastolic BPs without any change in the pulse pressure. CONCLUSION: The results of this study show that a widened pulse pressure is not a useful clinical sign of a hemodynamically significant PDA in preterm infants. However, low systolic and diastolic BPs may be useful clinical signs of a hemodynamically significant PDA in preterm infants. If the systolic and diastolic BP is low, a PDA should be considered and echocardiography should be performed for early diagnosis and treatment.

Secondary Subaortic Stenosis after Patch Closure of Subarterial Ventricular Septal Defect

Subaortic stenosis usually occurs without a previous heart operation, however, it can occur after heart surgery as well, with a condition known as a secondary subaortic stenosis (SSS). SSS has been reported after surgical repair of several congenital heart defects. There are only a few recorded cases of SSS after repair of ventricular septal defect (VSD). Here we report a rare case of SSS that occurred 3 years after surgical repair of subarterial VSD. A follow-up echocardiogram is essential for detecting SSS caused by the newly developed subaortic membrane in patients who had cardiac surgery.

Final height of patients with congenital heart disease / 소아과

PURPOSE: Growth impairment is usually observed in children with congenital heart disease (CHD). Studies on the final height and weight of this population are insufficient. Our aim was to evaluate the final height of children with CHD and to identify the relationship between CHD and growth. METHODS: We recorded the values of final height and weights of 105 CHD patients (age, <19 years) who visited Chonnam National University Hospital between November 2000 and March 2009, and we reviewed the medical records. RESULTS: The mean values of weight and height of male CHD patients were significantly lower than those of the normal subjects. Patients with severe growth impairment (below the third percentile of normal) included 5 males (8.6%) and 4 females (8.5%) with height less than normal and 9 males (15.5%) and 8 females (17.0%) with weight less than normal. The mean growth of the patients in the cyanotic heart disease group was lower than that of normal subjects, but a statistically significant difference was noted in the weights of males. In a comparative study based on the type of CHD, a significant difference was noted in weights of males. Patients with patent ductus arteriosus and those with tetralogy of Fallot had the highest and lowest mean values of weight, respectively. CONCLUSION: Growth impairment was more evident in children with CHD than normal children. Patients should be treated during an optimal time frame. Thus, CHD patients should be treated if follow-up studies indicate growth impairment.

The characteristic laboratory findings of non-responsiveness to intravenous immunoglobulin in children with Kawasaki disease / 소아과

PURPOSE: Although intravenous immunoglobulin (IVIG) treatment is an effective first-line treatment for Kawasaki disease, 10-20% of the patients develop persistent fever or coronary artery complications. Medical records of Kawasaki disease patients were reviewed to assess the characteristic laboratory findings of IVIG nonresponsiveness. METHODS: We reviewed the clinical records of 118 children with Kawasaki disease who were treated at the Chonnam National University Hospital from March 2003 to February 2008. The laboratory findings of the IVIG-responder group (n=110) and the IVIG-nonresponder group (n=8) were compared at admission day and at 48 hours and 14 days after IVIG administration. RESULTS: At admission, the level of creatine kinase (CK) was lower (P = 0.03) and that of total protein was higher (P < 0.01) in the nonresponders than in the responders. At 48 hours after IVIG administration, the white blood cell (WBC) count (P = 0.04) and neutrophil% (P < 0.01) was higher in the nonresponders than in the responders. The neutrophil% (P < 0.01) and CK (P = 0.01) level at admission was lower than that at 48 hours after IVIG administration in the responders; this decrease was not as apparent in the nonresponders. CONCLUSION: IVIG nonresponders have lower CK and higher total protein levels at admission and higher WBC count and neutrophil% at 48 hours after IVIG administration. The decrease in the neutrophil% and CK level between at admission and at 48 hours after IVIG administration is remarkably higher in responders than in nonresponders.

A case of atypical hemolytic uremic syndrome as an early manifestation of acute lymphoblastic leukemia / 소아과

Hemolytic uremic syndrome (HUS) is the most common cause of acute renal failure in children younger than 4 years and is characterized by microangiopathic hemolytic anemia, acute renal failure, and thrombocytopenia. HUS associated with diarrheal prodrome is usually caused by Shiga toxin-producing Escherichia coli O157:H7 or by Shigella dysenteriae, which generally has a better outcome. However, atypical cases show a tendency to relapse with a poorer prognosis. HUS has been reported to be associated with acute lymphoblastic leukemia (ALL) in children. The characteristics and the mechanisms underlying this condition are largely unknown. In this study, we describe the case of an 11-year-old boy in whom the diagnosis of ALL was preceded by the diagnosis of atypical HUS. Thus, patients with atypical HUS should be diagnosed for the possibility of developing ALL.

Late adverse reactions to iopromide (Ultravist(R)) diagnosed by the patch test: a case report / 소아과

Iodinated contrast media (CM) can cause immediate and late reactions. We treated a patient with a recurrent generalized maculopapular rash and a fever that occurred within two days of exposure to iodinated CM, iopromide (Ultravist(R)), for chest computed tomography. We performed skin testing including prick tests, intradermal tests, and patch tests. Our findings indicated a late skin reaction to Ultravist(R) in addition to cross-reactions to other iodinated CM such as ioversol (Optiray(R)), iohexol (Iobrix(R)), and iobitridol (Xenetix(R)). In this study, we report the case of a patient diagnosed with a late adverse reaction to Ultravist(R) in addition to cross-reactions to other iodinated CM.

Herpes zoster complicated by deep vein thrombosis : a case report / 소아과

Varicella zoster virus (VZV) causes two diseases: Varicella, a generalized, primary infection, and herpes zoster (zoster), a secondary infection caused by latent VZV reactivation. Zoster can also be caused by latent VZV reactivation after a varicella vaccination. The complications associated with varicella include cutaneous infections, which are the most common, as well as pulmonary and neurological involvement. However, a deep venous thrombosis (DVT) has been rarely described as a varicella-associated complication. Here, we describe the case of a child with varicella zoster who developed a DVT that completely resolved after intravenous acyclovir and subcutaneous low-molecular-weight heparin treatment.

Herpes zoster complicated by deep vein thrombosis : a case report / 소아과

Varicella zoster virus (VZV) causes two diseases: Varicella, a generalized, primary infection, and herpes zoster (zoster), a secondary infection caused by latent VZV reactivation. Zoster can also be caused by latent VZV reactivation after a varicella vaccination. The complications associated with varicella include cutaneous infections, which are the most common, as well as pulmonary and neurological involvement. However, a deep venous thrombosis (DVT) has been rarely described as a varicella-associated complication. Here, we describe the case of a child with varicella zoster who developed a DVT that completely resolved after intravenous acyclovir and subcutaneous low-molecular-weight heparin treatment.