Novel Behavior of the 2019 Novel Coronavirus With Invasion of the Cardiac Conduction System in the Young.

We report the case of a 35-year-old man (an oil engineer) referred as a coronavirus disease-2019 (COVID-19) case with heart block and a four-day history of headache and fever. The patient was hemodynamically stable with normal respiratory effort and oxygen saturation. Three consecutive COVID-19 tests were positive since admission. Comprehensive clinical assessment investigations were performed. Apart from mild acute phase reactants elevation, all results were within reference limits. He had no leukocytosis and normal cardiac enzymes, chest x-ray findings, echocardiography findings, and healthy coronary arteries. The patient had a fever and electrocardiographic evidence of sinus node dysfunction associated with Mobitz type 2 atrioventricular block that progressed to complete heart block. This was a unique presentation of COVID-19 in a young, otherwise healthy man with the sole manifestation confined to the cardiac conduction system and the absence of respiratory involvement, hypoxemia, and acidosis.

Biventricular Outflow Obstruction Associated With Atrioventricular Septal Defects and Patent Ductus Arteriosus: An Extremely Rare Combination.

We present an extremely rare combination of biventricular outflow obstruction associated with atrioventricular septal defects and patent ductus arteriosus (PDA). Almost all the other published cases, including ours, were associated with other congenital cardiac lesions other than biventricular outflow obstruction. Most cases ended with poor outcomes. Our patient was a 55-day-old term female infant. She was managed by successful aortic balloon valvuloplasty with successful early outcome.

Evaluation ofserum free carnitine/acylcarnitine levels and left ventricular systolic functions in children with idiopathic epilepsy receiving valproic acid.

OBJECTIVES: In the study, the effect of valproic acid on serum free/acylcarnitine levels and left ventricular systolic function in pediatric patients with idiopathic epilepsy receiving valproic acid was investigated. PATIENTS AND METHODS: Patients receiving valproic acid treatment for six months between January 2012 and December 2012 were evaluated. Blood samples were obtained from the participants twice (pretreatment and the sixth month of treatment) and serum-free and acylcarnitine levels (from C2 to C18:1-OH) were measured using tandem mass spectrometry. Cardiac functions (ejection fraction, shortening fraction, cardiac output, left ventricular systolic and diastolic diameters, left atrial diameter, aortic diameter, cardiac output, and myocardial performance index) were evaluated by echocardiography simultaneously. RESULTS: A total of fourty patients, 23 female (57.5%) and 17 male (42.5%), with the diagnosis of idiopathic epilepsy and receiving valproic acid monotherapy were studied. Comparison of serum-free and acylcarnitine levels measured pretreatment and sixth month of treatment revealed a decrease in average C0 and C5:1 (respectively p < 0.001, p = 0.013) and an increase in C2, C3, C5-OH, C8:1 and C4-DC levels (respectively p < 0.001, p < 0.001, p = 0.019, p = 0.013, p < 0.001). Other serum acylcarnitine levels did not change significantly (p > 0.05). No difference was observed in concurrent echocardiographic measurements of left ventricular systolic function (p > 0.05). CONCLUSION: The study demonstrated that valproic acid treatment results in low levels of free carnitine and changes in some acylcarnitine subgroups but has no influence on left ventricular systolic function.

The late effects of anticancer therapy after childhood Wilm's tumor: the role of diastolic function and ambulatory blood pressure monitoring.

OBJECTIVE: Wilms' tumor, or nephroblastoma, is the most common primary malignant renal tumor of childhood. The excellent outcome now expected for most children with this tumor is attributed to the combination of effective adjuvant chemotherapy, improved surgical and anesthetic techniques and also the radiosensitivity of the tumor. The numerous organ systems are subject to the late effects of anticancer therapy. The aim of this study was to investigate the blood pressure profile and ambulatory blood pressure monitoring, and also cardiac diastolic functions and pulmonary venous flow in 25 children with unilateral Wilms' tumor in remission. METHODS: The patient group consists of 25 patients who successfully completed anticancer treatment for unilateral Wilms' tumor. Thirty-three age-, weight- and height-matched healthy children were considered as a control group for an echocardiographic study. Also, 20 age-, weight- and height-matched healthy children were considered as a control group for the ambulatory blood pressure monitoring study. RESULTS: In our study, 24 h, daytime and night-time systolic blood pressure and night-time diastolic blood pressure measurements were found to be significantly increased in the patient group compared with healthy children. We detected diastolic filling pattern abnormalities. We also found increase in pulmonary venous flow (systolic and diastolic) in Wilms' tumor group. CONCLUSIONS: We suggest the regular follow-up of survivors of Wilms' tumor for care and prevention of cardiovascular diseases.

Closure of patent ductus arteriosus in children, small infants, and premature babies with Amplatzer duct occluder II additional sizes: multicenter study.

OBJECTIVES: To evaluate safety and efficacy of closure of patent ductus arteriosus (PDA) with Amplatzer duct occluder II Additional Sizes (ADO II AS) and to report early and midterm results of the device in children and very young symptomatic infants. METHODS: Retrospective analysis of angiographic data of 60 children from four pediatric cardiology centers. RESULTS: The median patient age and weight were 6.5 (0.5-168) months and 6.8 (1.19-57) kg, respectively. In the study, 26 children had a body weight of ≤ 6 kg. Of these 26 children, 9 had a body weight of ≤ 3 kg. The median narrowest diameter of PDA was 2 (1.2-4) mm. Ductal anatomy was Type A in 29, Type B in 2, Type C in 11, Type D in 1, and Type E in 16 patients, and a residual PDA after surgery in 1 patient. Closure with ADO II AS was achieved in 58 (96.6%) of 60 attempted cases. In two infants, the device was not released because of significant residual shunt. ADO II was used in one, and the other was sent to surgery. Complete closure was observed in all ADO II AS deployed children by the next day on echocardiography. Median follow-up was 12 (1-18) months. Neither death nor any major complications occurred. CONCLUSIONS: Our study shows that closure of medium and small sized PDA by using ADO II AS device is effective and safe in children. The use of the device will expand the field of application of PDA closure in small infants.

Intracardiac thrombus case caused by blunt trauma due to child abuse.

Intracardiac thrombus is a rare condition in children, although there has recently been an increase in case reports in the literature. We here report an asymptomatic intracardiac thrombus caused by blunt trauma due to child abuse in a 4-year-old girl. On the echocardiogram, one can see pericardial fluid surrounding all of the heart, and a mobile mass, a thrombus of 5.8 × 9 mm in diameter, was observed in the right atrium and on the free border of the tricuspid valve. The thrombus and pericardial fluid disappeared on the follow-up echocardiogram performed after the 10-day heparin therapy.

The relationship between migraine and right-to-left shunt in children.

UNLABELLED: Migraine is the most common headache in childhood, and there are some reports that suggest the relationship between migraine and right-to-left shunt. The aim of this study was to evaluate the frequency of right-to-left shunt in children with migraine with aura and compare it with children with migraine without aura, and in healthy children. In a cross-sectional case-control study, we assessed 20 children with migraine with aura, 20 migraine without aura and 20 healthy age, and gender-matched control group. We determined the frequency of right-to-left shunt by transcranial doppler with contrast and transthoracic echocardiography without contrast. The dopplers and echocardiograms were performed blindly by the same examiners during headache-free periods. The presence of right-to-left shunt was found in 13/20 patients with migraine with aura compared with five of 20 migraine without aura and four of 20 control subjects. The frequency of right-to-left shunt in migraine with aura was statistically different from the other two groups (P < 0.005). There was no association between right-to-left shunt and frequency of attacks, duration and intensity of attacks, uni/bilateral occurence, familial occurrence, gender and age of patients. CONCLUSION: our findings suggest possible association of migraine with aura and right-to-left shunt. It seems that right-to-left shunt does not influence the clinical features of migraine.

Effects of different doses of remifentanil infusion on hemodynamics and recovery in children undergoing pediatric diagnostic cardiac catheterization.

OBJECTIVE: The present study aimed to compare 2 different doses of remifentanil infusion on hemodynamics, recovery period, and complications in children undergoing diagnostic pediatric cardiac catheterization. DESIGN: A prospective study. SETTING: A university hospital. PARTICIPANTS: Children undergoing diagnostic cardiac catheterization (n = 60). INTERVENTIONS: Children (2-12 years of age) scheduled for elective diagnostic cardiac catheterization under sedation were included in this study. The patients were assigned randomly to 2 groups as follows: patients in group 1 (n = 30) received a remifentanil infusion of 0.1 µg/kg/min, and patients in group 2 (n = 30) received a remifentanil infusion of 0.2 µg/kg/min. Heart rate (HR), systolic and diastolic blood pressures (BPs), oxygen saturation (SpO(2)), respiratory rate (RR), sedation, and recovery scores were recorded. MEASUREMENTS AND MAIN RESULTS: There were no significant differences between the groups in terms of systolic and diastolic BPs, HR, SpO(2), and RR during the study period. Additional drugs were required for 15 children in group 1; however, 27 patients maintained a satisfactory level of sedation with the 0.2-µg/kg/min remifentanil infusion. The time to achieve a recovery score of ≥5 was significantly shorter in group 2 than in group 1 (4.1 ± 0.3 minutes v 6.8 ± 0.8 minutes). No postoperative complications were reported in either group. CONCLUSION: After oral midazolam premedication and local prilocaine infiltration, 0.2 µg/kg/min of remifentanil provided adequate sedation without any hemodynamic compromise during pediatric diagnostic cardiac catheterization.

Severe myopathy caused by the new pandemic influenza A (H1N1) in a child.

Myopathy is a rare complication of influenza infections. Here, we report on an eight-year-old girl with severe myopathy due to new pandemic influenza A (H1N1). She presented with severe myopathy following generalized tonic-clonic seizure and recovered completely within a few days.

An unexpected complication during stent implantation for coarctation of the aorta: longitudinal stent compression.

We report a 17-year-old adolescent with diagnosis of the coarctation of aorta (CoA) underwent stent implantation in which complicated with non expansion and longitudinal compression of the stent.

Plasma endothelin-1 and nitrate levels in Down's syndrome with complete atrioventricular septal defect-associated pulmonary hypertension: a comparison with non-Down's syndrome children.

Children with Down's syndrome (DS)-associated complete atrioventricular septal defect (AVSD) have rapid and aggressive development of pulmonary vascular disease when compared with non-Down's syndrome (ND) children. We aimed to evaluate the role of plasma endothelin-1 (ET-1) and nitrate levels in DS children with complete AVSD-associated pulmonary hypertension (PH) and compare this to ND patients. The study included 20 patients (11 males, nine females) who had complete AVSD associated with PH. Comparisons were made between DS patients (n=12) aged 4 to 8 months (median 5 months) and ND patients (n=8) aged 4 to 12 months (median 7 months). Blood samples were drawn from the inferior vena cava, pulmonary artery, pulmonary vein, and aorta. The plasma ET-1 concentrations of the two groups were compared to the peripheral venous and arterial ET-1 levels, and pulmonary vein nitrate was compared to the peripheral arterial nitrate levels of ten healthy infants. The mean pulmonary artery (PA) pressure and pulmonary vascular resistance (Rp) were significantly higher in the DS group than ND patients, and the pulmonary blood flow (Qp) in ND patients was higher than DS patients. There were no differences between the two study groups in regard to plasma ET-1 and nitrate levels obtained from matched sampling sites. The plasma ET-1 and nitrate levels were significantly higher in both study groups compared to the control subjects. The plasma ET-1 and nitrate levels in DS patients with PH were not different when compared to those of ND patients.

Dystrophic calcification of fetal myocardium: a case report.

OBJECTIVE: A diagnosis of myocardial dystrophic calcification, a rare cause of fetal cardiac masses, is presented. METHODS: The fetal echocardiography of a 26-year-old pregnant woman who was referred to the Pediatric Cardiology Department at 20 weeks' gestation revealed an echogenic mass in the post wall of the left ventricle. RESULTS: The pregnancy was terminated. The histopathology of the necropsy material revealed dystrophic calcification. CONCLUSION: The dystrophic calcification of myocardium must be kept in mind in prenatal differential diagnosis of intracardiac masses for patient management and genetic counseling.

Anomalous systemic arterial supply to normal Basal segments of the left lower lobe of the lung: therapeutic implication.

We describe a 5-month old infant who presented with a continuous murmur and enlargement of the left heart. The patient's diagnosis was an anomalous systemic arterial supply to basal segments of the left lower lobe characterized by a lack of a pulmonary arterial supply. This condition was treated without lobectomy. To our knowledge, this report is the first to describe an anomalous systemic arterial supply to basal segments of the lower lobe of the left lung with a single arterial supply that was treated in childhood without lung resection. Our case offers an alternative treatment to surgical lobectomy for this abnormality.

Charcoal haemoperfusion in amitriptyline poisoning: experience in 20 children.

AIM: Tricyclic antidepressant (TCA) toxicity is common among children and adults due to widespread use. Amitriptyline (AT) is one of the most commonly prescribed TCAs. Current guidelines do not recommend charcoal haemoperfusion (HP) for AT overdose due to high protein binding and large volume of distribution. However evidence regarding the efficacy of charcoal HP in addition to supportive measures is accumulating in the published reports. METHODS: Here we report our experience in 20 children (15 girls, 5 boys) with acute AT overdose aged between 1.5 and 15 years, successfully managed with HP in our institution between January 2000 and February 2007. RESULTS: The HP indications were mainly severe initial cardiac and respiratory involvement. After HP, all patients recovered dramatically with a mean hospital stay of 4 days (range: 2-12). Only one patient developed neurological sequelae due to prolonged hypoxia secondary to respiratory arrest. CONCLUSION: To our knowledge this is the largest case series reporting the efficacy of charcoal HP in acute AT overdose in children. Based on our findings, charcoal HP seems to be an effective treatment modality, especially in prompt correction of severe life-threatening cardiac and respiratory findings in children with serious AT overdose and resulting in a reduction of morbidity and mortality.

Prognostic value of heart rate turbulence and heart rate variability in children with dilated cardiomyopathy.

The aim of our study is to evaluate the prognostic value of heart rate turbulence and heart rate variability in children with dilated cardiomyopathy (DCM). Twenty-five children with DCM and 24 age- and sex-matched healthy children who were admitted between January 2002 and September 2004, enrolled in this prospective study at our hospital. After the echocardiographic examination, three-channel 24-ambulatory ECG recordings were obtained in all patients with DCM and in the control group. Time domain heart rate variability parameters were obtained in both groups. Heart rate turbulence was measured in DCM patients, but we could not calculate heart rate turbulence in the control group since no ventricular ventricular premature complexes (PVC) were found in the 24-hour ECG monitoring in the control group. The mean follow-up period of the DCM group was 13.4 months (3-26 months). Five patients died (20%) during the follow-up period. Triangle index, turbulence slope (TS), age and availability of nonsustained ventricular tachycardia (VT) on 24-hour ECG monitoring were prognostic factors according to the correlation analyses. Only triangle index was detected as an independent risk factor among the prognostic factors according to the logistic regression analyses. This study assessed the prognostic value of heart rate turbulence and heart rate variability in children with dilated cardiomyopathy. Further studies are needed to investigate the prognostic value of heart rate turbulence.