Noise in a Neonatal Intensive Care Unit: Exploring Its State and Solutions.

BACKGROUND: Concerns regarding the environmental noise issue in neonatal units and an interest in developing strategies to reduce this noise have motivated researchers to conduct comprehensive qualitative research to elucidate the current situation and help improve it. PURPOSE: This study aims to explore the current state of noise and possible solutions in a neonatal intensive care unit (NICU) in Konya, Turkey. METHODS: In 2021, a descriptive exploratory study was conducted with a qualitative content analysis approach. Eighteen nurses, three physicians, seven staff members, and four mothers were selected to participate in the study via purposeful sampling. The data were collected from two semi-structured interviews, six focus groups, six observations, and sound source level measurements using a sound decibel meter. Qualitative content analysis was used to analyze the data. RESULTS: Three main themes and seven major categories emerged from the data analysis. The themes were overt and covert sources, pan-negative effects, and holistic modification. All recorded sound levels exceeded the recommended noise level of 45 dB. Fifty-seven percent of sound sources were in the range of 45-65 dB, and 43% were higher than 65 dB. IMPLICATIONS FOR PRACTICE AND RESEARCH: This study showed that NICU has a noisy environment with hidden sound sources that can negatively affect all people. This situation must be approached seriously by holistic modification involving environmental modification, behavioral modification, and resource management. It highlighted that each environment is unique and needs to be carefully evaluated to find a suitable and cost-effective solution.

Serum ischemia-modified albumin and oxidized LDL in cord blood and serum of neonates born to pre-eclamptic mothers.

BACKGROUND: We investigated oxidized low-density lipoprotein (OxLDL) and ischemia-modified albumin (IMA) in cord blood and neonatal blood of 7-day-old neonates born to pre-eclamptic and normotensive healthy mothers. METHODS: The study was performed on 30 neonates born to pre-eclamptic and 20 neonates born to normotensive mothers. IMA and OxLDL were determined on spectrophotometry and ELISA, respectively. RESULTS: IMA in cord blood was higher in the pre-eclamptic group as compared with the normotensive group, but the difference between the groups was not significant. IMA in neonate venous blood was significantly higher in the pre-eclamptic group than in the normotensive group (P < 0.001). OxLDL in both cord blood and in neonate venous blood was significantly higher in the pre-eclamptic group compared with the normotensive group (P < 0.001). IMA and OxLDL were significantly decreased after delivery in both groups. CONCLUSIONS: Significantly increased cord blood OxLDL and significantly increased OxLDL and IMA 7 days after birth in neonates born to pre-eclamptic mothers might be an indicator of increased oxidative stress in pre-eclampsia.

Total antioxidant and total oxidant states, and serum paraoxonase-1 in neonatal sepsis.

BACKGROUND: Paraoxonase-1 (PON-1) is an enzyme with a glycoprotein structure that depends on calcium and which is located in serum high-density lipoprotein (HDL). The aim of this study was to evaluate PON-1, and oxidant/antioxidant state, before and after treatment for neonatal sepsis, and to determine the usability of PON-1 in neonatal sepsis treatment. METHODS: A total of 35 neonatal sepsis patients and 35 healthy controls were included in the study. Activity of PON-1, total oxidant state (TOS) and total antioxidant state (TAS) were measured and oxidative stress index (OSI) was calculated. RESULTS: In the neonatal sepsis patients, pre-treatment TAS, TOS and OSI were significantly higher than the post-treatment levels (P < 0.0001, P < 0.0001 and P < 0.0001, respectively), and PON-1 was significantly lower (P < 0.0001). Similarly, pre-treatment TAS, TOS and OSI in the sepsis group were also significantly higher than in the control group (P < 0.0001, P < 0.0001 and P < 0.0001, respectively) and PON-1 was significantly lower (P < 0.0001). Post-treatment TAS in the sepsis group was significantly higher than in the control group (P = 0.009), whereas post-treatment TOS, OSI and PON-1 in the sepsis group were not significantly different to the control group (P = 0.078, P = 0.597 and P = 0.086, respectively). CONCLUSION: Low serum PON-1 was found in neonatal sepsis. Serum PON-1 is thought to be a useful biomarker to evaluate the effectiveness of treatment and recovery in neonatal sepsis.

Total oxidant, antioxidant, and paraoxonase levels in babies born to pre-eclamptic mothers.

AIM: The aim of this study was to investigate the oxidant-antioxidant status in babies born to pre-eclamptic mothers (BBPM). MATERIAL AND METHODS: The paraoxonase (PON)-1, total antioxidant status (TAS), and total oxidant status (TOS) levels were measured in the cord blood and venous blood (7th day) of BBPM (n = 31) and babies born to normotensive mothers (n = 25). RESULTS: The PON-1 and TOS levels in the cord blood and venous blood on the 7th day were not significantly different between the two groups; however, the cord blood TAS levels were higher in BBPM (P = 0.001), and the TAS levels in the venous blood were higher in the control group (P = 0.021). Furthermore, the cord blood PON-1 levels of babies born to severely pre-eclamptic mothers (n = 18) were higher than those of babies born to moderately pre-eclamptic mothers (n = 13) (P = 0.042). There were no differences in the cord blood TAS and TOS levels and venous blood PON-1, TAS, and TOS levels between babies born to severely and moderately pre-eclamptic mothers. CONCLUSION: The increased TAS levels found in the cord blood of BBPM indicate that the fetus is protected against oxidative damage caused by increased oxidative stress in the mother. To the best of our knowledge, this is the first study in the published work investigating PON-1 levels in BBPM.

An observational, multicenter, registry-based cohort study of Turkish Neonatal Society in neonates with Hypoxic ischemic encephalopathy.

BACKGROUND: Hypoxic ischemic encephalopathy (HIE) is a significant cause of mortality and short- and long-term morbidities. Therapeutic hypothermia (TH) has been shown to be the standard care for HIE of infants ≥36 weeks gestational age (GA), as it has been demonstrated to reduce the rates of mortality, and adverse neurodevelopmental outcomes. This study aims to determine the incidence of HIE in our country, to assess the TH management in infants with HIE, and present short-term outcomes of these infants. METHODS: The Turkish Hypoxic Ischemic Encephalopathy Online Registry database was established for this multicenter, prospective, observational, nationally-based cohort study to evaluate the data of infants born at ≥34 weeks GA who displayed evidence of neonatal encephalopathy (NE) between March, 2020 and April 2022. RESULTS: The incidence of HIE among infants born at ≥36 weeks GA (n = 965) was 2.13 per 1000 live births (517:242440), and accounting for 1.55% (965:62062) of all neonatal intensive care unit admissions. The rates of mild, moderate and severe HIE were 25.5% (n = 246), 58.9% (n = 568), and 15.6% (n = 151), respectively. Infants with severe HIE had higher rates of abnormal magnetic resonance imaging (MRI) findings, and mortality (p<0.001). No significant difference in mortality and abnormal MRI results was found according to the time of TH initiation (<3 h, 3-6 h and >6 h) (p>0.05). TH was administered to 85 (34.5%) infants with mild HIE, and of those born of 34-35 weeks of GA, 67.4% (n = 31) received TH. A total of 58 (6%) deaths were reported with a higher mortality rate in infants born at 34-35 weeks of GA (OR 3.941, 95% Cl 1.446-10.7422, p = 0.007). CONCLUSION: The incidence of HIE remained similar over time with a reduction in mortality rate. The timing of TH initiation, whether <3 or 3-6 h, did not result in lower occurrences of brain lesions on MRI or mortality. An increasing number of infants with mild HIE and late preterm infants with HIE are receiving TH; however, the indications for TH require further clarification. Longer follow-up studies are necessary for this vulnerable population.

Comparing the efficacy of nebulizer recombinant human DNase and hypertonic saline as monotherapy and combined treatment in the treatment of persistent atelectasis in mechanically ventilated newborns.

BACKGROUND: The purpose of the present study was to compare the cost-effectiveness and efficacy of nebulizer recombinant human DNase (rhDNase) and hypertonic saline (HS) as monotherapy and combined treatment in neonatal atelectasis. METHODS: Eighty-seven newborns with persistent atelectasis who did not respond to traditional treatment were studied retrospectively. Group 1 did not receive nebulizer drugs; Group 2 received 7%HS; Group 3 received rhDNase; and Group 4 received both 7%HS and rhDNase. Subjects' chest X-ray scores, partial pressure of CO(2), respiratory rate, fraction of inspired oxygen (FiO(2)) peak inspiratory pressure, atelectasis healing rate, median duration of nebulizer treatment and costs were compared. RESULTS: Percentages of improvement in atelectasis on Day 3 of treatment in Group 1, Group 2, Group 3 and Group 4 were 27, 70, 81 and 95%, respectively, while median duration of treatment was 8.1, 3.3, 2.9 and 2.4 days, respectively. Comparison of chest X-ray scores, partial pressure of CO(2), respiratory rate, FiO(2) and peak inspiratory pressure values before and 48 h after treatment did not yield a significant difference for the control group (P > 0.05), while a marked improvement was observed in other groups for all parameters (P < 0.05). The most distinct improvement was in Group 4, followed by Group 3. CONCLUSIONS: Although both the combined treatment with HS and rhDNase and their monotherapies are effective in the treatment of persistent atelectasis in newborns receiving mechanical ventilation, their combined use produces higher efficacy. The efficacy of rhDNase is superior to monotherapy with HS. Use of these two treatments concomitantly reduces the cost. To the best of our knowledge, the present study is the first to use HS alone or in combination with rhDNase in newborn patients.

Frequency of congenital hypothyroidism in neonates in the Konya region, Turkey.

Congenital hypothyroidism (CH) resulting from deficient production of thyroid hormone is one of the most commonly encountered diseases in pediatric endocrinology. Thyroid hormones play a crucial role in normal cerebral and growth maturation. These harmful effects on the cerebral and growth maturation can be prevented by early diagnosis and sufficient treatment in the first weeks of life. Diagnosis must be determined immediately within days after birth and effective treatment must begin. Unfortunately, despite the presence of national neonatal screening programs, CH cases are still rarely seen. In our study, it was aimed to assess the outcome of having determined an early diagnosis of CH and initiating treatment with thyroid stimulating hormone (TSH) screening test on live born babies over a period of 7 years in our hospital. With this aim, 93,897 live births were evaluated in the Doctor Faruk Sükan Obstetrics and Pediatrics Hospital between the years of 1999 and 2007. All neonates were screened with the TSH test. CH was determined in 43 (1/2183) of all cases and treatment was begun. The importance of this test was emphasized in that the test should be performed routinely on all neonates to obtain an early diagnosis and so that treatment for CH can begin.

Frequency of congenital hearing loss in 43,503 healthy newborn infants in Konya, Turkey.

OBJECTIVE: To determine the frequency of congenital hearing loss (CHL) in healthy newborn infants in Konya, Turkey. METHODS: A total of 43,503 healthy neonates born at Doctor Faruk Sükan Obstetrics and Children's Hospital between the years of 2006 and 2011 were evaluated, prospectively. Hearing screening test was carried out using Transient Evoked Otoacoustic Emission (TEOAE) method. Hearing test was also repeated three times in neonates with suspected hearing loss in first month of life. Infants with abnormal hearing test were referred to Department of Ear, Nose and Throat Selçuk University, Meram Faculty of Medicine, Konya, Turkey. Evoked auditory brainstem responses (E-ABR) were performed in these cases. Infants with abnormal E-ABR were referred to further centers for cochlear implantation. RESULTS: Hearing test was found to be abnormal in 226 (5.19/1,000) infants based on the results of TEOAE, repeated three times. CHL was diagnosed in 216 (4.97/1,000) of 226 infants at the end of E-ABR. These 216 infants were referred for cochlear implantation. CONCLUSION: Our findings showed that TEOAE method is highly effective in neonatal hearing screening and frequency of CHL was 4.97/1,000 in our region.

Can altered colostrum miRNA expression profile after cesarean delivery be a risk factor for autoimmune diseases?

PROBLEM: The cesarean section (CS) rate has increased significantly in North America, Western Europe, and Latin America. However, it has been reported that the incidence of inflammatory and autoimmune diseases such as asthma and type 1 diabetes increased in parallel with CS in these countries. Our aim was to investigate the expression level of miRNAs associated with inflammatory response and autoimmune diseases in colostrum samples and contribute to elucidating the role of CS in the pathogenesis of immune system-related diseases. METHOD OF STUDY: Colostrum samples were taken from voluntary mothers who had 40 normal and 50 cesarean births. miRNAs were extracted from colostrums and detected to miRNA expression profiling (eighty-four miRNAs) by quantitative real-time PCR with the Fluidigm integrated microfluidic circuit technology. RESULTS: There was a statistically significant change in the expression levels of 17 miRNAs in the colostrums of mothers who had normal and cesarean delivery (p < .05), and all of miRNAs were upregulated in the colostrums of mothers who have had cesarean delivery. CONCLUSION: Our best knowledge is that the study we conducted was the first to investigate the effect of delivery method (CS or normal) on the miRNA profile of colostrum. Cesarean delivery is a potential risk factor for inflammatory and immune system-related diseases in children due to dysregulation in miRNA expression.

Risk and Prognostic Factors in Perinatal Hemorrhagic Stroke.

BACKGROUND: Perinatal stroke encompasses a heterogeneous group of focal neurological injuries early in brain development. In this study, we aimed to compare risk and prognostic factors in preterm and term infants with perinatal hemorrhagic stroke (PHS). PATIENTS AND METHODS: The study includes 66 infants with PHS. The infants were evaluated for demographic characteristics, fetal and maternal risk factors, perinatal events, clinical and neuroimaging findings, complications, and sequales. RESULTS: Of 66 infants with PHS, 44 (66.70%) were preterm and 22 (33.30%) were term infants. Primiparity, mucosal bleeding, and multiple lobes involvement were more common in term infants than preterm infants (P < 0.05); however, respiratory insufficiency, neonatal sepsis, perinatal asphyxia, respiratory distress syndrome, use of invasive mechanical ventilation, use of noninvasive mechanical ventilation, and prolonged hospitalization were more common in preterm infants than term infants (P < 0.05). Eight (12.12%) infants died during infancy period. Small for gestational age and mucosal bleeding were more common in infants who are dead than those alive (P < 0.05). Forty-two (63.63%) infants were followed. Cerebral palsy and/or epilepsy and/or hydrocephalus were diagnosed in 36 (85.72%) infants during follow-up. CONCLUSION: Our findings showed that PHS was much more common in preterm infants. Mucosal bleeding and multiple lobes involvement were more common in term infants. PHS has high morbidity and mortality rates. Small for gestational age and mucosal bleeding were more common in infants who are dead.

Is there a relationship between causative microorganisms and hearing loss in neonatal sepsis?

BACKGROUND: The aim of the present study was to determine the possible relationship between cultured microorganisms and hearing loss in infants admitted to the neonatal intensive care unit (NICU) who could not pass a standard hearing test. METHOD: The medical records of infants treated at the NICU were retrospectively evaluated. The patients were first divided into two groups, and group 1 was divided into two subgroups: Group 1 included patients with hearing loss accompanied by proven sepsis caused by either gram-negative (group 1A) or gram-positive (group 1B) bacteria, and group 2 included patients with clinical sepsis. The groups were compared with potential risk factors related to hearing loss. RESULTS: Between January 2014 and January 2019, the cases of 3,800 infants admitted to the NICU were reviewed. Of 3,548 living babies, the Auditory Brainstem Response (ABR) test showed that 35 infants (0.98%) were diagnosed with hearing loss. In 12 infants with hearing loss, microbial growth in the blood cultures was detected, whereas in the remaining 23, the blood cultures were negative. Of the cases with microbial growth, five were gram negative and seven were gram positive. In the comparison of groups 1A, 1B, and 2, there were statistically significant differences in terms of risk factors such as low birth weight (p = .048), neonatal hospitalization time (p = .001), free oxygen support (p = .001), intraventricular bleeding (p = .001), loop diuretic use (p = .001), and blood transfusion (p = .048). CONCLUSION: The relationship between hearing loss and microorganisms causing sepsis could not be determined in this research.

Clinical characteristics and neonatal outcomes of liveborn newborns with hydrops fetalis treated in a tertiary level neonatal intensive care unit.

BACKGROUND: This study was performed for examining the neonatal results and aetiological factors of neonates with hydrops fetalis (HF) and determining the factors affecting mortality. METHODS: The medical records of liveborn neonates with HF who were admitted to a tertiary Neonatal Intensive Care Unit (NICU) in Konya, Turkey, between 2013 and 2019 were reviewed retrospectively. The demographic data, prenatal intervention, clinical findings, and results of the patients were recorded. RESULTS: A total of 32.6% of the 46 liveborn HF infants had immune HF (IHF), while 67.4% had nonimmune HF (NIHF); there was prenatal diagnoses in 39 (84.7%) cases. Cordocentesis and blood transfusion (n = 14; 30.4%) were the prenatal diagnosis and treatment interventions with the highest rate. A total of 16 patients (34.7%) received in utero interventional treatment. It was determined that the mean gestational age was not associated with mortality; moreover, birthweight (BW), Apgar score and the need for mechanical ventilation affected mortality. CONCLUSION: The prognosis changes according to different etiologies of HF. However, despite the developments in neonatal care, mortality is still high in HF infants.

Effects of the storage of breast milk at different temperatures on total antioxidant capacity, total oxidant status, and paraoxonase-1 level.

Konak M, Minici M, Tarakçi N, Altunhan H, Toker A, Örs R. Effects of the storage of breast milk at different temperatures on total antioxidant capacity, total oxidant status, and paraoxonase-1 level. Turk J Pediatr 2019; 61: 1-6. Breast milk is a well-balanced ideal nutritional source with high bioavailability for infants. As being a fresh, biological and dynamic product, changes in the breast milk during these storage periods have been the subject of ongoing research. This study aims to evaluate total antioxidant capacity (TAC), total oxidant status (TOS), and paraoxonase-1 (PON-1) levels of fresh and freezestored breast milk. Ten cc of breast milk was obtained from the mothers as the days between 10 and 15 in the morning within a 1-hour period. TAC, TOS, and PON-1 levels were evaluated in the fresh breast milk. Collected breast milk samples were divided into two groups for storage at -20°C or -80°C. Stored samples were tested for TAC, TOS, and PON-1 levels after 72 hours. The highest TAC level was detected in fresh breast milk (p < 0.05). The TOS levels of fresh breast milk showed a statistically significant reduction in rate after storage. The TOS levels at -20°C and -80°C were significantly lower at -80°C (p < 0.05). Our study results show that oxidant and antioxidant activities are at the maximum level in the fresh breast milk. In terms of antioxidant status the effect of freezing temperatures hasn`t been determined. We conclude that it is more convenient to store the breast milk at -80°C than to store at -20°C in terms of preserving the storage TOS level.

Mosaic trisomy 14 and aorta-pulmonary window association: A case report.

Trisomy 14 mosaicism is a rare chromosomal abnormality with distinct and recognizable clinical features. Congenital heart anomalies can accompany in this syndrome. To the best of our knowledge, this is the first case of mosaic trisomy 14 with an aortopulmonary window to be described in the literature.

Early neonatal outcomes of very-low-birth-weight infants in Turkey: A prospective multicenter study of the Turkish Neonatal Society.

OBJECTIVE: To investigate the early neonatal outcomes of very-low-birth-weight (VLBW) infants discharged home from neonatal intensive care units (NICUs) in Turkey. MATERIAL AND METHODS: A prospective cohort study was performed between April 1, 2016 and April 30, 2017. The study included VLBW infants admitted to level III NICUs. Perinatal and neonatal data of all infants born with a birth weight of ≤1500 g were collected for infants who survived. RESULTS: Data from 69 NICUs were obtained. The mean birth weight and gestational age were 1137±245 g and 29±2.4 weeks, respectively. During the study period, 78% of VLBW infants survived to discharge and 48% of survived infants had no major neonatal morbidity. VLBW infants who survived were evaluated in terms of major morbidities: bronchopulmonary dysplasia was detected in 23.7% of infants, necrotizing enterocolitis in 9.1%, blood culture proven late-onset sepsis (LOS) in 21.1%, blood culture negative LOS in 21.3%, severe intraventricular hemorrhage in 5.4% and severe retinopathy of prematurity in 11.1%. Hemodynamically significant patent ductus arteriosus was diagnosed in 24.8% of infants. Antenatal steroids were administered to 42.9% of mothers. CONCLUSION: The present investigation is the first multicenter study to include epidemiological information on VLBW infants in Turkey. Morbidity rate in VLBW infants is a serious concern and higher than those in developed countries. Implementation of oxygen therapy with appropriate monitoring, better antenatal and neonatal care and control of sepsis may reduce the prevalence of neonatal morbidities. Therefore, monitoring standards of neonatal care and implementing quality improvement projects across the country are essential for improving neonatal outcomes in Turkish NICUs.

A congenital cranial dysinnervation disorder: Möbius' syndrome.

Möbius' syndrome, also known as Möbius' sequence, is a nonprogressive cranial dysinnervation disorder characterized by congenital facial and abducens nerve paralysis. Here, we report a 5-day-old girl who was conceived after in vitro fertilization with poor suck and facial paralysis. She had bilaterally ptosis and lateral gaze limitation, left-sided deviation of the tongue, dysmorphic face, hypoplastic fingers and finger nails on the left hand, and was diagnosed as having Möbius' syndrome. Involvement of other cranial nerves such as three, four, five, nine, 9 and 12, and limb malformations may accompany this syndrome. However, several factors have been proposed for the etiology, some rare cases have also been reported with artificial reproductive technologies. Feeding difficulties and aspiration are the main problems encountered in infancy. The other cranial nerves should be examined further in newborns who present with congenital facial palsy, and other cranial dysinnervation disorders should be considered in the differential diagnosis.

Total antioxidant, total oxidant and serum paraoxonase levels according to lipid administration method in parenterally fed premature infants.

OBJECTIVE: The aim of our study was to determine whether lipid solutions delivered separately or in mixture with total parenteral nutrition (TPN) solutions effect the balance between oxidant and antioxidant levels in premature infants. METHODS: A total of 60 preterm newborns who were delivered at their 30-34 gestational weeks and received TPN were included in the study. Premature newborns were randomized into two groups based on the delivery method of the lipid solution, separately (Group 1) or in mixture with TPN solutions (Group 2). Total antioxidant status (TAS), total oxidant status (TOS) and paraoxonase (PON-1) levels were analyzed in both blood samples, and oxidative stress index (OSI) was also calculated. RESULTS: Thirty cases from both groups were included in the study. Statistically significant decrease in the level of TAS and increase in the level of PON-1 were detected at 72 h of TPN therapy in both groups (p < 0.05). Statistically significant decrease in both TOS and OSI levels were observed in Group 2 (p < 0.05). In association with these findings, any statistically significant intergroup difference was not detected in both parameters regarding oxidant balance (p > 0.05). CONCLUSION: Our study showed that according to lipid administration method any difference for oxidant-antioxidant balance was not detected.

Fully automated simultaneous umbilical arteriovenous exchange transfusion in term and late preterm infants with neonatal hyperbilirubinemia.

OBJECTIVES: The purpose of this study was to compare the efficacy and safety of two different catheterization techniques of exchange transfusion (ET) used in the therapy of newborn jaundice: fully automated two-way ET technique and the classical one-way ET. PATIENTS AND METHODS: The study included babies at gestational age of >34 weeks. In total, 107 ETs were performed on 86 babies. Totally, the umbilical vein (UV) group included 54 babies having undergone 69 ETs and the UV/UA group included 32 babies having undergone 38 ETs. RESULTS: The declines in bilirubin levels right after ET (p = 0.018) and 8 h after ET (p = 0.014) were higher in the fully automated UV/UA technique than in the classical UV technique. Furthermore, the duration of intensive phototherapy following ET was shorter in the UV/UA method than in the UV method (p = 0.003). There was no difference between the two methods in terms of ET-associated complications (p = 0.927). CONCLUSIONS: In neonatal hyperbilirubinemia, ET with fully automated UV/UA technique is more efficient than the classical ET technique, causing no additional side-effects. It is also more physiological than the classical technique, since it minimizes the fluctuations in the blood volume and intravascular pressure during ET.

Subclinical immune reactions to viral infections may correlate with child and adolescent diagnosis of attention-deficit/hyperactivity disorder: a preliminary study from Turkey.

BACKGROUND: Attention-Deficit/Hyperactivity Disorder (ADHD) is one of the most common neuro-developmental disorders of childhood and adolescence. Studies focusing on the relationship of infectious agents and ADHD are scarce. It is also known that cerebellar injury may lead to hyperactive behavior. This study aimed to evaluate the relationship between viral agents of cerebellitis and the diagnosis of ADHD. METHODS: The study group was formed of 60 consecutive ADHD patients and 30 healthy children. IgG levels for VZV; HSV-1, CMV, Measles, Mumps, Rubella and EBV were evaluated. RESULTS: Males were significantly higher among patients with ADHD (65% vs. 40%, p=0.025). Patients with ADHD displayed significantly higher positivity for measles IgG (80% vs. 60%, p=0.044). When patients with ADHD were classified according to their pubertal status, adolescents with ADHD displayed higher positivity for mumps (100% vs. 74.4%, p=0.043). Most of the patients were diagnosed with ADHD-Combined or Hyperactive/Impulsive Subtypes (56.6%) while 43.3% were diagnosed with ADHD-predominantly inattentive type. When patients with subtypes of ADHD were compared in terms of seropositivity, it was found that patients with ADHD-Combined/ Hyperactive-Impulsive subtypes had significantly elevated reactions for Rubella (100% vs. 88.5%, p=0.044). CONCLUSION: Although limited to a single center and may be prone to sampling biases, our results may support the notion that immune reactions may be related with ADHD among children and adolescents. Further, prospective studies from multiple centers are needed to support our findings and establish causality.