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Review Article
Incidence, causative organisms, and risk factors of bloodstream infections in pediatric liver transplant patients: a systematic review
Mohamad Shieb, Rand Hasanain, Zara Arshad, Faisal Nawaz, Rahul Kashyap, Eric Stern
Bacterial bloodstream infections (BSI) are the leading cause of mortality and morbidity in pediatric solid organ transplant recipients. This systematic review aimed to pool global data from leading transplant institutions and identify the overall incidence, risk factors, and causative organisms of BSI in pediatric liver transplant recipients. A systematic review of the PubMed and OVID databases was conducted from 2000...
Original Article
Hematology
Changes and correlations of T-cell coinhibitory molecule programmed death-1 and interferon-γ in pediatric immune thrombocytopenia
Fady Mohamed El-Gendy, Amira M.F. Shehata, Esam Awad Abd El-Kawy, Mahmoud Ahmed El-Hawy
Clin Exp Pediatr. 2023;66(3):127-133.   Published online February 24, 2023
Question: What are the PD-1+ CD4+ T cells percentages and serum interferon gamma (IFN-γ) levels of pediatric patients with immune thrombocytopenia (ITP)?
Finding: Compared with healthy controls, the PD-1+ CD4+ T cells percentages and IFN-γ levels were significantly higher in ITP patients before and 1 month after therapy.
Meaning: Our findings suggest that PD-1+ CD4+ T cells and IFN-γ are involved in the pathophysiological process of ITP.
Review Article
Nephrology (Genitourinary)
Neonatal hypertension: concerns within and beyond the neonatal intensive care unit
Kathleen Altemose, Janis M. Dionne
Clin Exp Pediatr. 2022;65(8):367-376.   Published online May 30, 2022
Some neonates, especially those who are premature, may experience hypertension while in the neonatal intensive care unit (NICU). The most common causes are prematurity-related and the hypertension usually resolves over the first 1–2 years of life. Unfortunately, the increasing population of NICU graduates is at risk for later cardiovascular and kidney disease in childhood and adulthood. This population requires careful attention to blood pressure and weight throughout their life course.
Endocrinology
Pediatric hypertension based on Japanese Society of Hypertension Guidelines (JSH 2019) with actual school blood pressure screening data in Japan
Toru Kikuchi
Clin Exp Pediatr. 2022;65(6):283-290.   Published online November 26, 2021
The prevalence of Japanese pediatric hypertension is 0.9% based on proper measurement protocols. Hypertensive children tend to be hypertensive adults. Pediatric essential hypertension is characterized by an absence of symptoms, obesity, a family history of hypertension, and a low birth weight. The most common causes of pediatric secondary hypertension are renal parenchymal and renovascular diseases. Important factors controlling pediatric hypertension include healthy lifestyle modifications and pharmacotherapy.
Nephrology (Genitourinary)
Blood pressure measurements and hypertension in infants, children, and adolescents: from the postmercury to mobile devices
Seon Hee Lim, Seong Heon Kim
Clin Exp Pediatr. 2022;65(2):73-80.   Published online September 15, 2021
· Hypertension is defined as a blood pressure (BP) >90th (elevated) or 95th (hypertension) percentile in children by height, age, and sex and >95th percentile in neonates by age, birth weight, and sex.
· Although the oscillometric method can be used for screenings, the auscultatory method remains the gold standard. The hybrid method employs the auscultatory and electronic methods and can reduce bias.
· BP measurement mobile device applications have a potential for development.
Original Article
Cardiology
Age-, sex-, and height-based blood pressure reference charts, Yazd children 6–18 years, Iran
Nastaran ahmadi, Seyedeh Mahdieh Namayandeh, Seyed Mahmood Sadr Bafghi, Mohammad Reza Mohammadi, Masoud Mirzaei, Mohammadtaghi Sarebanhassanabadi, Amir Houshang Mehrparvar, Reza Faraji, Neda Nilforoshan, Ahmad Karimi
Clin Exp Pediatr. 2020;63(8):321-328.   Published online July 21, 2020
Question: What is the 90th, 95th, 99th percentile of blood pressure based on height as the cut point for diagnosis of hypertension in children of our province?
Finding: We used blood pressure of 456 males and 579 females in 6–18 years old in “Iranian Children and Adolescents' Psychiatric Disorders survey.
Meaning: The 90th, 95th, 99th percentiles of systolic and diastolic blood pressure in both sex based on age and 10-cm height intervals were developed in Yazd.
Review Article
Hematology
Genetic classification and confirmation of inherited platelet disorders: current status in Korea
Ye Jee Shim
Clin Exp Pediatr. 2020;63(3):79-87.   Published online February 6, 2020
Inherited platelet disorders (IPDs), which manifest as primary hemostasis defects, often underlie abnormal bleeding and a family history of thrombocytopenia, bone marrow failure, hematologic malignancies, undefined mucocutaneous bleeding disorder, or congenital bony defects. Wide heterogeneity in IPD types with regard to the presence or absence of thrombocytopenia, platelet dysfunction, bone marrow failure, and dysmegakaryopoiesis is observed in patients. The individual...
Original Article
Neurology
Evaluation of hematologic profile may be needed for patients treated with oxcarbazepine
Gu Hyun Jung, Su Jeong You
Clin Exp Pediatr. 2019;62(8):312-316.   Published online April 11, 2019

Purpose: The major side effects of treatment with oxcarbazepine (OXC) are skin rash and hyponatremia. Hematologic side effects are reported rarely. The aim of this study was to investigate the rate and types of the hematologic side effects of OXC. Methods: The medical records of 184 patients diagnosed with epilepsy or movement disorder and on OXC monotherapy, at the Department of...
Review Article
Neonatology (Perinatology)
Transfusion practice in neonates
Do-Hyun Kim
Clin Exp Pediatr. 2018;61(9):265-270.   Published online September 6, 2018
Neonates, especially extremely low birth weight infants, are among the groups of patients undergoing transfusion frequently. Since they are exposed to higher specific transfusion risks compared to the patients of other age groups, there are many special aspects that must be considered for transfusion therapy in neonates. The transfusion risks in neonates include adverse outcomes specific for preterm infants as...
Original Article
Endocrinology
The association of total blood mercury levels and overweight among Korean adolescents: analysis of the Korean National Health and Nutrition Examination Survey (KNHANES) 2010–2013
Yi-Yeon Shin, In-Kyung Ryu, Mi-Jung Park, Shin-Hye Kim
Clin Exp Pediatr. 2018;61(4):121-128.   Published online April 23, 2018
Purpose

Obesity has been associated with higher total blood mercury levels, based on animal studies; however, studies that focus on children and adolescents are lacking. We aimed to assess the association between total blood mercury levels and the incidence of overweight and abdominal obesity in Korean adolescents.

Methods

The study population comprised 1,567 adolescents (793 boys and 774 girls; aged 10–19 years), who...

Genetics and Metabolism
Neonatal indirect hyperbilirubinemia and glucose-6-phosphate dehydrogenase deficiency
Hasan M. Isa, Masooma S. Mohamed, Afaf M. Mohamed, Adel Abdulla, Fuad Abdulla
Clin Exp Pediatr. 2017;60(4):106-111.   Published online April 25, 2017
Purpose

This study aimed to determine the prevalence of glucose-6-phosphate dehydrogenase (G6PD) deficiency among infants with neonatal indirect hyperbilirubinemia (NIH); compare G6PD-deficient and G6PD-normal patients regarding hyperbilirubinemia and need for exchange transfusions (ET); and assess risk factors for ET and kernicterus.

Methods

This is a case-control retrospective study. Medical records of NIH patients admitted to the Pediatric Department, Salmaniya Medical Complex, Bahrain, between...

General Pediatrics
Reference values of lead in blood and related factors among Korean adolescents: the Korean National Health and Nutrition Examination Survey 2010-2013
Min-Gyu Choi, Mi-Jung Park, Shin-Hye Kim
Clin Exp Pediatr. 2016;59(3):114-119.   Published online March 31, 2016
Purpose

This study aimed to assess the reference values and factors influencing blood lead levels among Korean adolescents.

Methods

The study population consisted of 1,585 adolescents (801 males, 784 females; aged 10-19 years) who participated in the Korea National Health and Nutrition Examination Survey 2010-2013. We analyzed blood lead concentrations in relation to demographic/lifestyle characteristics for all participants. "Reference values" of blood lead...

Evaluation of three glucometers for whole blood glucose measurements at the point of care in preterm or low-birth-weight infants
Joon Ho Hwang, Yong-Hak Sohn, Seong-Sil Chang, Seung Yeon Kim
Clin Exp Pediatr. 2015;58(8):301-308.   Published online August 21, 2015
Purpose

We evaluated three blood glucose self-monitoring for measuring whole blood glucose levels in preterm and low-birth-weight infants.

Methods

Between December 1, 2012 and March 31, 2013, 230 blood samples were collected from 50 newborns, who weighed, ≤2,300 g or were ≤36 weeks old, in the the neonatal intensive care unit of Eulji University Hospital. Three blood glucose self-monitoring (A: Precision Pcx, Abbott;...

Review Article
Vascular health late after Kawasaki disease: implications for accelerated atherosclerosis
Yiu-Fai Cheung
Clin Exp Pediatr. 2014;57(11):472-478.   Published online November 30, 2014

Kawasaki disease (KD), an acute vasculitis that primarily affects young children, is the most common acquired paediatric cardiovascular disease in developed countries. While sequelae of arterial inflammation in the acute phase of KD are well documented, its late effects on vascular health are increasingly unveiled. Late vascular dysfunction is characterized by structural alterations and functional impairment in term of arterial...

Original Article
Correlation between the morning hypertension on ambulatory blood pressure monitoring and the left ventricular mass in children
Hyun Jung Kim, Kyung Hee Kim, Hong Ryang Kil
Clin Exp Pediatr. 2014;57(9):403-409.   Published online September 30, 2014
Purpose

Although high morning blood pressure (BP) is known to be associated with the onset of cardiovascular events in adults, data on its effects in children with hypertension are limited. Our retrospective study aimed to define the clinical characteristics of children with morning hypertension (MH) and to determine its associated factors.

Methods

We reviewed 31 consecutive patients with hypertension, confirmed by the ambulatory...

Blood culture contamination in hospitalized pediatric patients: a single institution experience
Hyewon Min, Cheong Soo Park, Dong Soo Kim, Ki Hwan Kim
Clin Exp Pediatr. 2014;57(4):178-185.   Published online April 30, 2014
Purpose

Blood culture is the most important tool for detecting bacteremia in children with fever. However, blood culture contamination rates range from 0.6% to 6.0% in adults; rates for young children have been considered higher than these, although data are limited, especially in Korea. This study determined the contamination rate and risk factors in pediatric patients visiting the emergency room (ER)...

Review Article
Clinical utilization of cord blood over human health: experience of stem cell transplantation and cell therapy using cord blood in Korea
Young-Ho Lee
Clin Exp Pediatr. 2014;57(3):110-116.   Published online March 31, 2014

Cord blood (CB) has been used as an important and ethical source for hematopoietic stem cell transplantation (SCT) as well as cell therapy by manufacturing mesenchymal stem cell, induced pleuripotential stem cell or just isolating mononuclear cell from CB. Recently, the application of cell-based therapy using CB has expanded its clinical utility, particularly, by using autologous CB in children with...

Original Article
The association of blood pressure with body mass index and waist circumference in normal weight and overweight adolescents
Young-Hwan Song
Clin Exp Pediatr. 2014;57(2):79-84.   Published online February 24, 2014
Purpose

Overweight can be defined by the body mass index (BMI) and is likely associated with an increased cardiovascular disease risk. However, waist circumference (WC), a central adiposity index, may be a better indicator of cardiovascular disease risk. Studies comparing the effects of BMI and WC on cardiovascular risk factors, such as high blood pressure (BP), are rare in adolescents.

Methods

We analyzed...

The correlation of blood pressure with height and weight in Korean adolescents aged 10-19 years; The Korean National Health and Nutrition Examination Surveys (2009-2011)
Young-Hwan Song
Clin Exp Pediatr. 2014;57(1):35-40.   Published online January 31, 2014
Purpose

Height-specific blood pressure (BP) is the standard parameter used to diagnose childhood hypertension. However, there has been some argument that weight may be a better variable than height in the reference BP standards. Therefore, before assessing the BP status using the reference BP standards, a basic understanding of the fundamental association of weight and height with BP is required.

Methods

In the...

The relationships of body mass index, waist-to-height ratio, and body fat percentage with blood pressure and its hemodynamic determinants in Korean adolescents: a school-based study
Na Young Kim, Young Mi Hong, Jo Won Jung, Nam Su Kim, Chung Il Noh, Young-Hwan Song
Clin Exp Pediatr. 2013;56(12):526-533.   Published online December 20, 2013
Purpose

Obesity is an important risk factor for hypertension in adolescents. We investigated the relationship of obesity-related indices (body mass index [BMI], waist-to-height ratio [WHR], and body fat percentage [%BF]) with blood pressure and the hemodynamic determinants of blood pressure in Korean adolescents.

Methods

In 2008, 565 adolescents, aged 12-16 years, were examined. The %BF of the participants was measured by bioelectrical impedance...

Association between cord blood 25-hydroxyvitamin D concentrations and respiratory tract infections in the first 6 months of age in a Korean population: a birth cohort study (COCOA)
Youn Ho Shin, Jinho Yu, Kyung Won Kim, Kangmo Ahn, Seo-Ah Hong, Eun Lee, Song-I Yang, Young-Ho Jung, Hyung Young Kim, Ju-Hee Seo, Ji-Won Kwon, Byoung-Ju Kim, Hyo-Bin Kim, Jung Yeon Shim, Woo Kyung Kim, Dae Jin Song, So-Yeon Lee, Soo Young Lee, Gwang Cheon Jang, Dong In Suh, Hyeon-Jong Yang, Bong Sung Kim, Suk-Joo Choi, Soo-Young Oh, Ja-Young Kwon, Kyung-Ju Lee, Hee Jin Park, Pil Ryang Lee, Hye-Sung Won, Soo-Jong Hong
Clin Exp Pediatr. 2013;56(10):439-445.   Published online October 31, 2013
Purpose

Previous studies suggest that the concentration of 25-hydroxyvitamin D [25(OH)D] in cord blood may show an inverse association with respiratory tract infections (RTI) during childhood. The aim of the present study was to examine the influence of 25(OH)D concentrations in cord blood on infant RTI in a Korean birth cohort.

Methods

The levels of 25(OH)D in cord blood obtained from 525 Korean...

Analysis of the association between necrotizing enterocolitis and transfusion of red blood cell in very low birth weight preterm infants
Seon-Yeong Bak, Sihyoung Lee, Jae-Hong Park, Kyu-Hee Park, Ji-Hyun Jeon
Clin Exp Pediatr. 2013;56(3):112-115.   Published online March 18, 2013
Purpose

To investigate the association between necrotizing enterocolitis (NEC) and red blood cell transfusions in very low birth weight (VLBW) preterm infants.

Methods

We studied were 180 VLBW preterm infants who were admitted to the neonatal intensive care unit of CHA Gangnam Hospital from January of 2006 to December of 2009. The subjects were divided into 2 groups: an NEC group (greater than...

Orthostatic symptoms does not always manifest during tilt-table test in pediatric postural orthostatic tachycardia syndrome patients
Tae-Eon Huh, Jung Sook Yeom, Young-Soo Kim, Hyang-Ok Woo, Ji Sook Park, Eun Sil Park, Ji-Hyun Seo, Jae-Young Lim, Chan-Hoo Park, Ki-Jong Park, Hee-Shang Youn
Clin Exp Pediatr. 2013;56(1):32-36.   Published online January 29, 2013
Purpose

Chronic day-to-day symptoms of orthostatic intolerance are the most notable features of postural orthostatic tachycardia syndrome (POTS). However, we have encountered patients with such symptoms and excessive tachycardia but with no symptoms during the tilt-table test (TTT). We aimed to investigate whether POTS patients with chronic orthostatic intolerance always present orthostatic symptoms during the TTT and analyze the factors underlying...

Review Article
Umbilical cord blood transplantation
Hong Hoe Koo, Hyo Seop Ahn
Clin Exp Pediatr. 2012;55(7):219-223.   Published online July 17, 2012

Since the first umbilical cord blood transplantation (CBT) in 1998, cord blood (CB) has now become one of the most commonly used sources of hematopoietic stem cells for transplantation. CBT has advantages of easy procurement, no risk to donor, low risk of transmitting infections, immediate availability and immune tolerance allowing successful transplantation despite human leukocyte antigen disparity. Several studies have...

Original Article
Hematopoietic stem cell transplantation in children with acute leukemia: similar outcomes in recipients of umbilical cord blood versus marrow or peripheral blood stem cells from related or unrelated donors
Eun Sang Yi, Soo Hyun Lee, Meong Hi Son, Ju Youn Kim, Eun Joo Cho, Su Jin Lim, Hee Won Cheuh, Keon Hee Yoo, Ki Woong Sung, Hong Hoe Koo
Clin Exp Pediatr. 2012;55(3):93-99.   Published online March 16, 2012
Purpose

This study compared outcomes in children with acute leukemia who underwent transplantations with umbilical cord blood (UCB), bone marrow, or peripheral blood stem cells from a human leukocyte antigen (HLA)-matched related donor (MRD) or an unrelated donor (URD).

Methods

This retrospective study included consecutive acute leukemia patients who underwent their first allogeneic hematopoietic stem cell transplantation (HSCT) at Samsung Medical Center between...

Validation study of the Dinamap ProCare 200 upper arm blood pressure monitor in children and adolescents
Chong Guk Lee, Hyang Mi Park, Hye Jung Shin, Jin Soo Moon, Yeong Mi Hong, Nam Soo Kim, Il Soo Ha, Myeong Jin Chang, Kyeong Won Oh
Clin Exp Pediatr. 2011;54(11):463-469.   Published online November 30, 2011
Purpose

To validate the Dinamap ProCare 200 blood pressure (BP) monitor against a mercury sphygmomanometer in children 7 to 18 years old in accordance with the 2010 International Protocol of European Society of Hypertension (ESH-IP2) and the British Hypertension Society (BHS) protocol.

Methods

Forty-five children were recruited for the study. A validation procedure was performed following the protocol based on the ESH-IP2 and...

A study on the measurement of the nucleated red blood cell (nRBC) count based on birth weight and its correlation with perinatal prognosis in infants with very low birth weights
Tae Hwan Kil, Ji Yeon Han, Jun Bum Kim, Gyeong Ok Ko, Young Hyeok Lee, Kil Young Kim, Jae Woo Lim
Clin Exp Pediatr. 2011;54(2):69-78.   Published online February 28, 2011
Purpose

The aim of this study was conducted to investigate the mean nRBC count in very low births weight infants (VLBWIs) and to determine the usefulness of the nRBC as an independent prognostic factors of perinatal complications in VLBWIs.

Methods

This study was conducted on 112 VLBWIs who were hospitalized in the neonatal intensive care unit (NICU) of the author's hospital within the...

Case Report
Bloody nipple discharge in an infant
Ji Yeon Seo, Sang Jeong Kim, Soon Joo Lee, Eun Song Song, Young Jong Woo, Young Youn Choi
Clin Exp Pediatr. 2010;53(10):917-920.   Published online October 31, 2010

Although milky nipple discharge appears frequently in infants, bloody nipple discharge is a very rare finding. We experienced a 4-month-old, breast-fed infant who showed bilateral bloody nipple discharge with no signs of infection, engorgement, or hypertrophy. The infant's hormonal examination and coagulation tests were normal, and an ultrasound examination revealed mammary duct ectasia. The symptoms resolved spontaneously within 6 weeks...

Original Article
Influence of histologic chorioamnionitis and funisitis on the level of peripheral blood C-reactive protein at birth in preterm infants
Do-Hyun Kim, Heun Ji Lee, Hee Sup Kim, Byoung Hoon Yoo
Clin Exp Pediatr. 2010;53(1):33-40.   Published online January 15, 2010
Purpose : The objective of this study is to determine the change of C-reactive protein (CRP) levels in the peripheral blood of preterm infants at birth according to the stage of intrauterine inflammation. Methods : A total of 187 infants (<32 weeks of gestation) were divided into a “no histologic chorioamnionitis” [HCAM (-), n=85] group and a “histologic chorioamnionitis” [HCAM...
Review Article
Hypertension in children and adolescents
Jo Won Jung
Clin Exp Pediatr. 2009;52(7):745-751.   Published online July 15, 2009
Hypertension is a major risk factor for myocardial infarction, stroke, and cardiovascular mortality in adults; its treatment reduces the risk of cardiovascular events. In recent times, attention is being paid to monitoring of blood pressure from childhood to adulthood. Childhood hypertension is associated with hypertension in later life, and early intervention is important. In the Korean socioeconomic background, a rapid...
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