Chest pain and syncope in children: a practical approach to the diagnosis of cardiac disease

Evaluation of Pediatric Chest Pain in the ED: Impact of the COVID-19 Pandemic

Introduction Chest pain is a common presenting complaint among children presenting to the ED, and serious underlying illnesses are found in only a small minority of cases. Due to the lack of established guidelines, the workup of these patients is institution or physician-dependent. Unlike adults with chest pain, workup among children tends to be minimal unless elements in the history and physical exam trigger it. We hypothesize that the emergence of COVID-19-related multisystem inflammatory syndrome in children (MISC) may have increased variability in how these patients are evaluated in the ED. Objective To determine if there has been a change in the approach to evaluating children presenting to the ED with chest pain since the emergence of the COVID-19 pandemic. Materials and methods This retrospective cohort study was conducted in a pediatric emergency department (PED) at a 400-bed urban academic community hospital. Medical records of children <21 years old who presented to the ED with chest pain from January to July in both 2019 and 2020 were reviewed. Patients with chest pain due to acute asthma exacerbations were excluded. Data about patient demographics, the number and types of tests utilized, and clinical management, including therapies and disposition, were collected. The subjects seen during 2019 were labeled as the 'pre-pandemic group' and those seen in 2020 as the 'pandemic group'. The number and type of tests utilized, therapeutic interventions, and disposition during the two study periods were subjected to analyses. Results Of the 180 patients evaluated for chest pain, 32 were excluded due to physician-diagnosed asthma-related chest pain. The study thus included the remaining 148 patients. There was no statistical association between the pre-pandemic and pandemic groups for presenting features of fever, cough, tachycardia, tachypnea, time of presentation to the ED, electrocardiogram (EKG) performance, and chest X-ray. However, the pandemic group showed a statistically significant increase in lab tests and hospitalizations compared to the pre-pandemic group. There was a statistically significant increase in the performance of complete blood counts (CBC), C-reactive protein (CRP), lactic dehydrogenase (LDH), serum ferritin, creatinine kinase-MB (CK-MB), troponin, B-natriuretic peptide (BNP), and D-dimers. Conclusion Since the onset of the COVID-19 pandemic, there has been a trend toward more extensive lab workups for patients presenting with acute chest pain in the ED.

A mild phenotype associated with KCNQ1 p.V205M mediated long QT syndrome in First Nations children of Northern British Columbia: effect of additional variants and considerations for management

Introduction

Congenital Long QT Syndrome (LQTS) is common in a First Nations community in Northern British Columbia due to the founder variant KCNQ1 p.V205M. Although well characterized molecularly and clinically in adults, no data have been previously reported on the pediatric population. The phenotype in adults has been shown to be modified by a splice site variant in KCNQ1 (p.L353L). The CPT1A p.P479L metabolic variant, also common in Northern Indigenous populations, is associated with hypoglycemia and infant death. Since hypoglycemia can affect the corrected QT interval (QTc) and may confer risk for seizures (also associated with LQTS), we sought to determine the effect of all three variants on the LQTS phenotype in children within our First Nations cohort.

Methods

As part of a larger study assessing those with LQTS and their relatives in a Northern BC First Nation, we assessed those entering the study from birth to age 18 years. We compared the corrected peak QTc and potential cardiac events (syncope/seizures) of 186 children from birth to 18 years, with and without the KCNQ1 (p.V205M and p.L353L) and CPT1A variants, alone and in combination. Linear and logistic regression and student t-tests were applied as appropriate.

Results

Only the KCNQ1 p.V205M variant conferred a significant increase in peak QTc 23.8 ms (p < 0.001) above baseline, with females increased by 30.1 ms (p < 0.001) and males by 18.9 ms (p < 0.01). There was no evidence of interaction effects with the other two variants studied. Although the p.V205M variant was not significantly associated with syncope/seizures, the odds of having a seizure/syncope were significantly increased for those homozygous for CPT1A p.P479L compared to homozygous wild type (Odds Ratio [OR]3.0 [95% confidence interval (CI) 1.2-7.7]; p = 0.019).

Conclusion

While the KCNQ1 p.V205M variant prolongs the peak QTc, especially in females, the CPT1A p.P479L variant is more strongly associated with loss of consciousness events. These findings suggest that effect of the KCNQ1 p.V205M variant is mild in this cohort, which may have implications for standard management. Our findings also suggest the CPT1A p.P479L variant is a risk factor for seizures and possibly syncope, which may mimic a long QT phenotype.

Cardioneuroablation for pediatric patients with functional sinus node dysfunction and paroxysmal atrioventricular block

INTRODUCTION

Severe transitory episodes of bradycardia with subsequent syncope in children are common, and generally portend a benign prognosis. Rarely, patients may experience prolonged asystolic episodes secondary to significant sinus pauses (SP) or paroxysmal atrioventricular block (AVB). Cardioneuroablation (CNA) is a catheter-based intervention, used to identify and ablate the epicardial ganglionated plexi (GP), which results in disruption of the vagal-mediated parasympathetic input to the sinus and atrioventricular node.

OBJECTIVE

Describe the methodology and role of CNA for treatment of pediatric patients with functional AVB or SP.

METHODS

This is a single-center, case series study. Patients with SP or AVB, 21 years of age or younger, who underwent CNA between 2015 and 2021 were included. CNA was performed via anatomically guided and high-frequency stimulation methods.

RESULTS

Six patients were included. The median age was 18.9 years (range 12.3-20.9 years), 33% female. Two patients had prolonged SP, two had paroxysmal AVB, and two had both SP and AVB. Four patients had prior syncope. The median longest pause was 8.9 s (range 3.9-16.8) with 11 total documented pauses (range 2-231) during the 6 months pre-CNA. Post-CNA, the median longest pause was 1.3 s (range 0.8-2.2) with one documented SP after termination of atrial tachycardia at the 3-month follow-up. At 6 months, the median longest pause was 1.1 s (0.8-1.3) with 0 documented pauses. No patients had syncope post-CNA.

CONCLUSION

CNA may be an effective alternative to pacemaker implantation in pediatric patients with syncope or significant symptoms secondary to functional SP or AVB.

Characteristics of chest pain among children presenting to the pediatric emergency department

Chest pain in pediatric patients is a common concern in pediatric emergency departments (ED). In most cases, benign conditions are related to noncardiac causes, and only a minority of the cases are caused by heart disease. This research aimed to evaluate the causes and characteristics of chest pain among children in a pediatric emergency department. This retrospective study evaluated children younger than 14 years of age who presented to the emergency department of a general pediatric hospital in the Eastern area of Saudi Arabia with non-traumatic chest pain between 2017 and 2022. The data included socioeconomic information, physical examination findings, and the results of basic investigations, such as chest X-ray and electrocardiogram. The Chi-square test was performed to compare various etiologies, with a 5% significant level. The study evaluated 310 patients with a mean age of 9.1±2.7 years. The majority of children presenting with chest pain had normal physical examinations, except 3.3% who showed respiratory and cardiac findings. The diagnostic tests indicated pneumonia in 2.9% and arrhythmia in 2.1% of children. Most patients were discharged with a diagnosis of idiopathic or muscular chest pain. The majority of patients (95%) were treated symptomatically in outpatient settings, with just one patient requiring hospitalization. The most common cause of chest pain prompting a child to visit the ED was idiopathic chest pain. Therefore, this study highlights the significance of obtaining a comprehensive medical history and physical examination to reveal important clues and help avoid unnecessary tests.

Syncope and Unresponsiveness in an Adolescent With Comorbid Cardiac Disease: An Illustrative Case Report and Literature Review of Functional Neurologic Symptom Disorder

BACKGROUND

This case report with an associated literature review explores the challenges, opportunities, and current evidence in creating a thoughtful diagnostic and management plan for an adolescent with functional neurologic symptom disorder and comorbid cardiac disease.

METHODS

We performed a literature review utilizing PubMed to identify the current evidence base related to pediatric functional neurologic symptom disorder in the setting of comorbid cardiac disease. Ultimately, 25 manuscripts were identified for inclusion in this study.

RESULTS

We reported the recent epidemiology, screening, diagnostic, and treatment measures utilized in pediatric syncope with a focus on differentiating psychogenic causes from serious cardiac and benign etiologies. We further described how psychiatric and psychological factors influence assessment, management, and outcomes.

CONCLUSIONS

This study provides current, evidence-based suggestions for the assessment, diagnosis, and management of pediatric syncope, with an emphasis on recognizing psychogenic causes of syncope. It includes a description of a novel case of functional neurologic symptom disorder in a pediatric patient with structural cardiac disease. The study highlights how the absence of standardized guidelines, heterogeneity in care delivery, and lack of concurrent mental health management led to worse outcomes.

Uncommon Causes of Chest Pain in Children: An Experience From a Tertiary Care Hospital

Background Chest pain is one of the common complaints for emergency and outpatient department (OPD) visits in children and adolescents. Chest pain accounts for 0.6% of pediatric emergency visits and 2.5% of pediatric outpatient consultations. The prevalence of chest pain and the etiological factors associated with children in India is unclear. The primary objective of this study was to evaluate the etiology of chest pain in children and adolescents. The secondary objective was to describe the demographic characteristics and associated symptoms with chest pain and the outcomes of children after the intervention. Methodology A retrospective analysis of case records of 55 children aged between 5 and 15 years who attended the emergency or OPD of the hospital with the primary complaint of chest pain from July 1, 2019, to June 30, 2021, was done. Results The mean age of patients in our study was 10.75 ± 2.47 years. Of 55 children, 26 were males, and 26 were females (male-to-female ratio = 0.9). In total, 43 (78.2%) patients had screen time of more than two hours. Palpitation was recorded in 11 (20.4%) patients, whereas only four (7.3%) children had breathing difficulties. Of 55 children, 46 (83.6%) had psychogenic causes, six (10.9%) had organic reasons, and three had no identifiable cause of chest pain. Anxiety disorder (40%) and depression (21.8%) were the leading psychogenic causes of chest pain. Overall, 13 (23.6%) children had associated smartphone and internet addiction disorder. Of 55 children, 36 (63.6%) improved following an appropriate intervention. Five children had some or no improvement in chest symptoms. Finally, 15 (27.3%) children were lost to follow-up. Conclusions Chest pain is one of the common complaints in the pediatric age group needing referral to a pediatric cardiologist. The most common etiology associated with chest pain is often non-cardiac and psychogenic. Good patient history taking, clinical examination, and fundamental investigations are sufficient to unravel the etiology in most cases.

Emergency Department Admissions of Children with Chest Pain before and during COVID-19 Pandemic

OBJECTIVES

We compared the number of accesses, causes, and instrumental evaluations of chest pain in children between the pre-COVID-19 era and the COVID-19 period and analyzed the assessment performed in children with chest pain, highlighting unnecessary examinations.

METHODS

We enrolled children with chest pain admitted to our emergency department between January 2019 and May 2021. We collected demographic and clinical characteristics and findings on physical examinations, laboratory tests, and diagnostic evaluations. Then, we compared the number of accesses, causes, and instrumental assessments of chest pain between the pre-COVID-19 era and the COVID-19 era.

RESULTS

A total of 111 patients enrolled (mean age: 119.8 ± 40.48 months; 62 males). The most frequent cause of chest pain was idiopathic (58.55%); we showed a cardiac origin in 4.5% of the cases. Troponin determination was performed in 107 patients, and the value was high only in one case; chest X-rays in 55 cases and echocardiograms in 25 cases showed pathological findings, respectively, in 10 and 5 cases. Chest pain accesses increased during the COVID-19 era (p < 0.0001), with no differences in the causes of chest pain between the two periods.

CONCLUSIONS

The increase in accesses for chest pain during the COVID-19 pandemic confirms that this symptom generates anxiety among parents. Furthermore, our findings demonstrate that the evaluation of chest pain is still extensive, and new chest pain assessment protocols in the pediatric age group are needed.

Serum Vitamin D Levels in Children and Adolescents with Vasovagal Syncope, Syncope Due to Orthostatic Hypotension, and Cardiac Syncope

OBJECTIVE

The study aimed to compare vitamin D levels between children and adolescents with vasovagal syncope, syncope due to orthostatic hypotension, cardiac syncope, and healthy individuals and to investigate the correlations of 25(OH)D with main clinical parameters of syncope.

MATERIALS AND METHODS

This study involved 83 children aged 8-17 years with syncope: 40 with vasovagal syncope, 24 with syncope due to orthostatic hypotension, and 19 with cardiac syncope. There were 24 healthy volunteers in the control group. Data concerning active standing test, electrocardiography, echocardiography, electroencephalography, and 24-hour Holter monitoring findings were collected. Serum vitamin D was evaluated by an enzyme-linked immunoassay technique test.

RESULTS

The mean levels of serum 25(OH)D were decreased in children with vasovagal syncope (18.8 ± 5.9 ng/mL), syncope due to orthostatic hypotension (19.9 ± 6.7 ng/mL), and cardiac syncope (20.6 ± 7.3 ng/mL) in comparing with the control group (30.9 ± 5.9 ng/mL; P < .001). In patients with syncope due to orthostatic hypotension, vitamin D deficiency was associated with a reduction in systolic blood pressure (r = 0.43) and diastolic blood pressure (r = 0.38) within the first minute, lower systolic blood pressure (r = 0.44) within the third minute of active orthostasis (P < .05). There were significant correlations of vitamin D deficiency with parameters of cardiac autonomic activity pNN50 (r = 0.49), total power (r = 0.39), and low frequency index (r = 0.35) in children with cardiac syncope (P < .05), while heart rate variability was not affected in patients with vasovagal syncope and syncope due to orthostatic hypotension (P > .05).

CONCLUSION

Children and adolescents with vasovagal syncope, syncope due to orthostatic hypotension, as well as cardiac syncope had higher frequency of vitamin D deficiency than healthy pediatric controls. This provides a new approach to syncope management in pediatric population, requiring further studies.

Palpitations, Dizziness, and Syncope in Teenage Girls: Practical Approach of a Pediatric Cardiologist

Palpitations, dizziness, and syncope are common in seemingly healthy teenage girls. Unfortunately, these symptoms can raise significant concerns in the patient and family, present diagnostic challenges to health care providers, and result in unhelpful and expensive testing and unnecessary restrictions on the patient. The possibility of serious underlying pathology may prompt referral to pediatric subspecialists including cardiology. This article presents some relevant background principles and practical guidelines from the perspective of a pediatric cardiologist. Elements of initial personal and family medical history and physical examination often distinguish benign conditions from more nefarious ones, or direct limited additional testing that ultimately confirms the presence or absence of heart disease. In addition, whether these symptoms are due to a condition that is serious or benign, every patient can benefit from an intervention, sometimes simple education and reassurance, behavioral or dietary modifications, medications, invasive procedures, or referral to other health care providers. [Pediatr Ann. 2022;51(11):e440-e447.].

The Relationship Between Unexplained Chest Pain in Children and Head-Up Tilt Test

Background

To explore the relationship between unexplained chest pain in children and head-up tilt test (HUTT).

Materials and Methods

A total of 825 children with the main symptom of unexplained chest pain were admitted to the Specialist Outpatient Clinic of Children's Cardiovascular Disease from October 2000 to November 2021 at The Second Xiangya Hospital, Central South University. Among them, 473 were male and 352 were female, with a mean age of 10.61 ± 2.21 years. The control group included 58 cases, comprising 35 males and 23 females, with a mean age of 10.26 ± 2.66 years. The detailed history, physical examinations, conventional 12-lead electrocardiogram, chest X-ray, echocardiography, myocardial enzymes, electroencephalogram, and blood series were all examined. Disorders of the chest wall, lung, heart, mediastinum, and esophageal reflux, as well as drug effects, were ruled out. All the children underwent HUTT. Demographic description, univariate analysis, and multivariate logistic regression analysis were used to explore the possible linear or non-linear relationships between the children's unexplained chest pain and HUTT.

Results

Among the 825 chest pain cases, 301 (36.48%) were HUTT positive and 524 (63.52%) were HUTT negative. HUTT-positive patients were older than HUTT-negative patients (11.04 ± 2.03 vs. 10.34 ± 2.31 years, P < 0.001). The logistic regression results showed that each year of age increased the probability of being HUTT positive by 17.90% (P < 0.000), and females were 91.30% more likely to be HUTT positive than males (P < 0.000).

Conclusion

Clinically unexplained chest pain in children is mainly caused by unbalanced autonomic nervous function. HUTT can help clear the cause of unexplained chest pain.

Serum pyridoxine, folate, cobalamin, and homocysteine levels in children presenting with vasovagal syncope

BACKGROUND

Recent studies confirm the role of B vitamins deficiency and hyperhomocysteinaemia in the development of dysautonomia that has been considered to be the main factor in vasovagal syncope development. The aim of the study was to investigate serum pyridoxine, folate, cobalamin, and homocysteine levels in children presenting with vasovagal syncope and to analyse the correlation between them and main clinical parameters of syncope.

METHODS

We studied 40 children, ages 8-17 years with a history of vasovagal syncope and 24 healthy volunteers. The serum pyridoxine, folate, cobalamin, and homocysteine levels were measured by a quantitative sandwich enzyme immunoassay technique using a commercial kit (Monobind, USA). Twenty-four-hour Holter monitoring and 24-hour ambulatory blood pressure monitoring were conducted for all participated patients.

RESULTS

Serum pyridoxine (9.42 ± 4.87, 16.11 ± 5.53 µg/L) and cobalamin (307.48 ± 95.50, 447.28 ± 108.85 ng/L) levels were reasonably low (p < 0.05) in patients with vasovagal syncope. Although there was no significant change in folate levels between syncope and healthy children (4.00 ± 1.34, 4.71 ± 1.73 µg/L; p = 0.20), we detected low folate-level association with longer duration of syncope (r = -0.42) and post syncope (r = -0.43) symptoms (p < 0.05). Finally, there was increased serum homocysteine level (13.55 ± 5.03, 7.81 ± 1.71 µmol/L; p < 0.05) in patients with vasovagal syncope. It was positively correlated with the average PQ interval (r = 0.35, p < 0.05) and average QTc interval (r = 0.49, p < 0.05).

CONCLUSIONS

The results suggested that pyridoxine, folate, cobalamin, and homocysteine may be involved in the pathogenesis of vasovagal syncope. This might provide a new approach for effective treatment of paediatric vasovagal syncope, requiring further study.

Chest pain in a pediatric emergency department: clinical assessment and management reality in a third-level Portuguese hospital

Chest pain in children and adolescents is a common complaint in the emergency department (ED), being mostly benign. A thorough patient history and physical examination should be enough in most cases for its proper management. Regarding non-cardiac chest pain, anxiety plays an important role.

Anomalous aortic origin of coronary artery: For a challenging diagnosis, a transthoracic echocardiogram is recommended

Anomalous aortic origin of a coronary artery (AAOCA), especially the interarterial course of the right or left coronary artery, predisposes paediatric patients to myocardial ischaemia. This rare condition is a leading cause of sudden cardiac death. General paediatricians face challenges when diagnosing this anomaly, and they should pay particular attention to the recurrence of exercise-related syncope without prodromal symptoms, chest pain and dyspnoea. An accurate transthoracic echocardiogram with Doppler colour flow mapping is the best method to use to identify AAOCA. CONCLUSION: Identifying an AAOCA is challenging, and we provide advice on clinical red flags and diagnostic approaches for general paediatricians.

Electrocardiogram in Pediatric Syncope: Practice Variation Among Pediatric Emergency Physicians

OBJECTIVES

We intended to assess emergency department physician's practice pattern and their motivations for obtaining electrocardiograms (ECGs) in pediatric vasovagal syncope presentations. We also explored if borderline ECG findings alters emergency department physicians' management in this population.

METHODS

We conducted a cross-sectional survey of emergency physicians enrolled in the Pediatric Emergency Research Canada network. The survey questionnaire introduced 2 clinical vignettes presenting a typical vasovagal syncope and a presentation suggestive of a cardiac etiology. Outcome measures included frequency investigations, specialist consultation, and disposition stratified by type of syncope presentation. We also evaluated which specific ECG findings were likely to change physicians' management and explored factors influencing the decision to perform or not perform the ECG.

RESULTS

The analyzable response rate was 47% (105/225). In the low-risk scenario, 51% of respondents requested an ECG, and none consulted the cardiology service, given that all requested investigations are normal. Forty-five percent of physicians modified their management if an ECG was reported as anything but totally normal. In the high-risk scenario, all respondents requested either a 12-lead ECG or a high-lead ECG, and 94% consulted the cardiology service. Physicians also identified clear differences in the motivations behind their decision to perform an ECG in typical vasovagal syncope.

CONCLUSIONS

This study highlights the significant practice variation in the evaluation and management of typical vasovagal syncope among physicians, which is informed by complex interactions of patient, provider, and institutional factors and the perceived clinical significance of borderline ECG findings.

The Etiology of Chest Pain in Children Admitted to Cardiology Clinics and the Use Echocardiography to Screen for Cardiac Chest Pain in Children

AIMS

Chest pain is a common disease in children. Most cardiac specialists use echocardiography to evaluate the etiology of and screen for children's cardiac chest pain. We analyzed the etiology and echocardiography results of children with chest pain in pediatric cardiology clinics, clarified the disease spectrum and evaluated the diagnostic value of echocardiography in screening cardiac chest pain in children.

METHODS AND RESULTS

The clinical data of children with chest pain aged younger than 18 years who admitted to the pediatric cardiology clinic of Beijing Anzhen Hospital between 2005 and 2019 were analyzed. The patients were divided into three groups, including the preschool group, the school-age group and the adolescent group. Total 3,477 children were enrolled in this study. 232 (6.7%) patients were caused by cardiac diseases and chest pain was of non-cardiac origin in 3,245 patients (93.3%). The incidence of non-cardiac chest pain in the adolescent group was significantly lower than the other two groups, respectively (91.4 vs. 94.9 vs. 94.3%, P < 0.05). In the preschool group, most of the patients were girls (51.4%), while in the school-age group and the adolescent group, most of the patients were boys (P < 0.05). Among the children (n = 3,205) who underwent echocardiography, 108 children had positive results, and 3,097 children had negative results. Among the 108 positive results, 10 cases of cardiac diseases were related to chest pain. The sensitivity, specificity of echocardiography in the diagnosis of cardiac chest pain were 6.7, and 96.9%, while the positive predictive value and negative predictive value was 12.96 and 93.67%, respectively.

CONCLUSION

In children with chest pain who are admitted to pediatric cardiology clinics, chest pain is mostly benign and rarely due to cardiac diseases. The use of echocardiography in evaluating cardiac chest pain in children is of little diagnostic value and leads to excess costs for patients and the health care system.

Severe post-COVID-19 costochondritis in children

Although children comprise the fewest cases of COVID-19 infection, symptoms, and complications among the various age groups affected, new long-term consequences are being reported. Here, we report a case of severe costochondritis unresponsive to traditional management in a child who had COVID-19 infection a few months earlier. To our knowledge, this is the first reported case of post-COVID-19 costochondritis (PCC) that has been successfully managed with colchicine. We recommend the consideration of colchicine as therapy for PCC in children presenting with severe musculoskeletal chest pain unresponsive to nonsteroidal anti-inflammatory drugs or steroids. Physicians should maintain a high clinical suspicion for PCC to prevent unnecessary steroid treatment, frequent emergency department visits, and potential for drug abuse in these patients with severe chest pain.

Role of Troponin Determination to Diagnose Chest Pain in the Pediatric Emergency Department

OBJECTIVES

Chest pain is a common cause to admission to the pediatric emergency department and often leads to an extensive cardiac evaluation. The objective of this study was to evaluate the usefulness of the troponin (TN) plasma level determination in the initial phase of the differential diagnosis of chest pain in children.

METHODS

This is a retrospective observational study on 107 patients, aged 0 to 19 years, admitted for chest pain to the pediatric emergency department of our institution. Demographics, clinical data, and patient outcomes were analyzed. Troponin values of >0.03 ng/mL but <0.1 ng/mL were considered suspected for cardiac pathology, whereas levels of >0.1 ng/mL were indicative of cardiac pathology. In these latter patients, an echocardiographic examination was also performed.

RESULTS

Only 99 patients were evaluated with electrocardiogram (ECG). In 91 of 99 patients of our series, both TN determination and ECG recording were performed. Troponin was higher than the cutoff value (0.03 ng/mL) in 9 patients (9.1%). Only 2 of the 9 patients who presented high TN values showed a nonpathological ECG, whereas 16 (17.5%) of 91 patients in whom both ECG and TN determination were performed had ECG abnormalities without a simultaneous elevation of TN. Of the 26 patients who had medical history and suggestive targets of cardiac pathology, only in 6 (23.1%) of them the diagnosis was confirmed. The final diagnosis of the 99 patients was idiopathic chest pain in 45.4% of cases.

CONCLUSIONS

Even with the low cost and the relatively easiness for the plasma level determination, TN should be measured only in children with chest pain associated to familiar history suggestive of cardiovascular disease and/or clinical symptoms and/or ECG alterations.

Pilot Trial of the Performance of Electrocardiogram in the Evaluation of Childhood Syncope in the Emergency Department

INTRODUCTION

The electrocardiogram (ECG) is widely considered a standard part of the syncope workup, and it is recommended to be obtained in all children with syncope. Nevertheless, a newly recognized cardiac cause is rare and largely incidental findings are commonly seen, leading to unneeded worry, additional testing, and added health care costs.

OBJECTIVE

The aim of this study was to analyze the performance of ECG in the evaluation of childhood syncope in the emergency department (ED).

METHODS

This was a descriptive, retrospective, multicenter pilot study of patients younger than 14 years diagnosed with syncope in which an ECG was obtained in the ED in 2015 and 2016.

RESULTS

During the study period, 440 patients were diagnosed with syncope, of which an ECG was performed in 197 (44.7%). Of these, 64 (32.5%) were related to any concerning features associated with the event, including 33 occurring during or after physical exertion. No major alteration of the ECG was noted, and the ECG revealed multiple minor findings in 38 (19.2%; 95% confidence interval, 14.4-25.4). Twenty-five (12.7%) children were referred to a pediatric cardiologist. No patient was noted to have a previously undiagnosed cardiac cause of syncope.

CONCLUSIONS

A newly recognized cardiac cause is extremely rare among children evaluated for syncope in the ED, and ECG is not systematically obtained in this population. Larger studies are needed to clarify if it is possible to identify a group of children that can be safely managed without a systematic ECG. Best practices need to be better implemented for an adequate management of pediatric syncope in the ED.

Assessment of cardiac function in syncopal children without organic causes

BACKGROUND

Syncope is a common problem in children and adolescents. However, a large proportion of syncope cases have no underlying cause.

PURPOSE

This study aimed to identify the factors affecting the severity of syncope using tissue Doppler imaging (TDI).

METHODS

This retrospective study included 61 children and adolescents with syncope who underwent echocardiography. The head-up-tilt test (HUT) was performed when there was a more severe syncopal event. We compared the echocardiographic findings between the execute HUT and nonexecute HUT, negative HUT result and positive HUT result, and normal electrocardiogram (ECG) and abnormal ECG groups. Data were analyzed using an unpaired t test post hoc analysis.

RESULTS

In the execute and nonexecute HUT groups, the odds ratios were 0.55 for medial E/E' (P=0.040) and 0.64 for lateral E/E' (P=0.049). Comparison of the results of the decreased, normal, and increased groups for lateral E/E' revealed a significant difference in the execution HUT and nonexecute HUT groups (overall, P=0.004; decreased vs. increased, P= 0.003; normal vs. increased, P=0.050).

CONCLUSION

Medial E/E' and lateral E/E' were decreased in patients with severe syncopal events. These findings suggest that the presence of left ventricular diastolic deterioration may cause hypoperfusion even in the absence of organic causes and, consequently, increase syncope severity and frequency. The TDI measured by echocardiography can be used as an index to predict syncope recurrence and/or severity.

Pacemaker use for the treatment of reflex-mediated syncope: 40-year experience at a single paediatric institution

INTRODUCTION

Reflex-mediated syncope occurs in 15% of children and young adults. In rare instances, pacemakers are required to treat syncopal episodes associated with transient sinus pauses or atrioventricular block. This study describes a single centre experience in the use of permanent pacemakers to treat syncope in children and young adults.

MATERIALS AND METHODS

Patients with significant pre-syncope or syncope and pacemaker implantation from 1978 to 2018 were reviewed. Data collected included the age of presentation, method of diagnosis, underlying rhythm disturbance, age at implant, type of pacemaker implanted, procedural complications and subsequent symptoms.

RESULTS

Fifty patients were identified. Median age at time of the first syncopal episode was 10.2 (range 0.3-20.4) years, with a median implant age of 14.9 (0.9-34.3) years. Significant sinus bradycardia/pauses were the predominant reason for pacemaker implant (54%), followed by high-grade atrioventricular block (30%). Four (8%) patients had both sinus pauses and atrioventricular block documented. The majority of patients had dual-chamber pacemakers implanted (58%), followed by ventricular pacemakers (38%). Median follow-up was 6.7 (0.4-33.0) years. Post-implant, 4 (8%) patients continued to have syncope, 7 (14%) had complete resolution of their symptoms, and the remaining reported a decrease in their pre-syncopal episodes and no further syncope. Twelve (24%) patients had complications, including two infections and eight lead malfunctions.

CONCLUSIONS

Paediatric patients with reflex-mediated syncope can be treated with pacing. Complication rates are high (24%); as such, permanent pacemakers should be reserved only for those in whom asystole from sinus pauses or atrioventricular block has been well documented.

Are Maternal Personality Traits an Etiological Factor in Adolescents with Functional Chest Pain?

BACKGROUND

In the etiology of functional chest pain (FCP), parental personality traits are worth considering in the context of the biopsychosocial model. The αlpha factor sub-dimension of the five-factor personality model (5FPM) includes agreeableness, conscientiousness, and neuroticism. There is increasing evidence that this dimension may be related to psychosomatic diseases. It was aimed to investigate how maternal personality traits affect adolescents with FCP. The hypothesis was determined that adolescents diagnosed with FCP can have lower quality of life and be more depressive/anxious and their mothers can have factor-α personality traits and be more depressive/anxious.

METHODS

The sample of this single-center, cross-sectional, case-control study consisted of 25 adolescents with FCP and their parents. The control group consisted of 35 age and sex matched healthy adolescents and their parents. Psychopathology was screened using the Kiddie Schedule for Affective Disorders and Schizophrenia-Present and Lifetime Version (K-SADS-PL) and psychiatric comorbidities were excluded. The Child Depression Inventory (CDI), the Spielberger State-Trait Anxiety Inventory (STAI), and KINDL forms were completed by the adolescents. The Beck Depression Inventory (BDI), Beck Anxiety Inventory (BAI), Five-Factor Personality Inventory short form (FFPI) were completed by the parents.

RESULTS

Mothers of adolescents with FCP scored significantly higher compared with mothers of healthy controls in agreeableness and conscientiousness and scored significantly lower in neuroticism. Higher levels of mothers' neuroticism scores were associated with higher CDI and STAI-1 scores in FCP group. Agreeableness (Exp (B) = 10.097; p = .004; confidence interval [CI] = 2.049-49.745) and conscientiousness (Exp (B) = 16.414; p = .011; CI = 1.902-141.682) were statiscally significant in regression model.

CONCLUSIONS

This study showed for the first time that mother's alpha factor personality traits may be one of the factors that contribute to the presence of FCP.

Unusual Cases of Syncope in the Pediatric Age Group

Syncope is common in the pediatric population and occurs in up to 15 percent of children prior to the end of adolescence. While the etiology of syncope in children is often benign and the majority of cases can be explained by isolated changes in vasomotor tone, a thorough evaluation is warranted to rule out more serious, life-threatening causes of syncope. Here, we present three atypical cases of syncope: a young judo player with recurrent syncope and dizziness, a teenage boy with syncopal episodes always preceded by stretching, and a child who experienced urticaria before losing consciousness. Herein, we review the pathophysiology, diagnosis, and management of syncope in children and adolescents.

The Causes of Chest Pain in Children and the Criteria for Targeted Myocardial Enzyme Testing in Identifying the Causes of Chest Pain in Children

Aims: Chest pain is a common complaint at pediatric cardiology clinics and often leads to an extensive cardiac evaluation. In this study, we analyzed the causes of chest pain in Chinese children and developed diagnostic procedures and criteria for targeted myocardial enzyme testing. Methods and Results: We retrospectively analyzed the clinical data of patients aged below 18 years visiting our hospital for chest pain between 2005 and 2019. Based on auxiliary exams and clinical diagnosis, we developed diagnostic procedures and criteria for targeted myocardial enzyme testing in children with chest pain. A total of 7,251 children were included in this study. The chest pain was of cardiac origin in 581 patients (8.0%). The incidence of non-cardiac chest pain was significantly higher in the preschool group and the school-age group than in the adolescent group (93.5 vs. 93.8 vs. 90.3%, P < 0.05). Among children with cardiac chest pain, the most common concomitant symptom was chest tightness (67.0%). Myocardial enzyme testing was performed in 5,408 patients and was abnormal in 453 patients. We developed a diagnostic procedure and criteria for targeted myocardial enzyme testing using pertinent history, physical examination, and ECG findings or UCG finding. Applying the diagnostic procedure and criteria could lead to the reduction in myocardial enzyme testing while still capturing all cardiac diagnoses. Conclusion: In children, chest pain is mostly benign and rarely cardiac. During diagnosis, targeted myocardial enzyme testing based on medical history and physical examination can effectively reduce resource use.

Utilization of the electrocardiogram in the pediatric emergency department

OBJECTIVE

Review pediatric electrocardiogram (ECG) result severity classification and describe the utilization of ECG testing, and rate of clinically significant results, in the pediatric emergency department (PED).

METHODS

This was a review of patients ≤18 years who had an ECG performed in a tertiary children's hospital PED 2005-2017. Using established guidelines and expert consultation, ECG results were categorized: Class 0 = normal, Class I = mild abnormality (no cardiology follow-up), Class II = moderate abnormality (cardiology follow-up), Class III = severe abnormality (immediate intervention). Chi-square tests were used to examine differences between patients with clinically insignificant (Class 0/I) and clinically significant (Class II/III) results. Multivariable regression was used to examine factors associated with clinically significant results.

RESULTS

16,147 unique PED encounters with ECG performed were included for analysis. The most common ECG indications were chest pain (32.5%), syncope (22.0%), arrhythmia (11.8%), toxicology/ingestion (9.4%), and seizure (5.7%). Overall, 12.7% (n = 2056) of ECGs had clinically significant (Class II/III) results, and only 2.0% (n = 325) had severe abnormality (Class III) that would require immediate intervention or cardiologist input. Factors associated with increased odds of clinically significant ECG were age ≤ 1 year (OR = 1.20, 95% CI: 1.02-1.41), male (OR = 1.33, 95% CI: 1.20-1.46), and indications of arrhythmia (OR = 1.84, 95% CI: 1.59-2.13), cardiac (OR = 2.57, 95% CI: 1.99-3.31), blank indication (OR = 1.52, 95% CI: 1.17-1.98), and electrolyte abnormality (OR = 1.42, 95% CI: 1.03-1.95).

CONCLUSIONS

In this study, we provided a valuable review of ECG result severity classification in the pediatric population. We found that chest pain and syncope represented over half of all ECGs performed. We found that clinically significant results are rare in the pediatric population at 12.7% of all ECGs performed, and very few (2.0%) have severe abnormalities that would require immediate intervention. Those with increased odds of a clinically significant ECG include young patients ≤1 year of age, male patients, and certain ECG indications.

Long-term Effects of an Evidence-based Guideline for Emergency Management of Pediatric Syncope

Supplemental Digital Content is available in the text.

Variability exists in the management of childhood syncope as clinicians balance resource utilization with the need to identify serious diseases. Limited evidence exists regarding the long-term impact of evidence-based guidelines (EBGs) on clinical practices. This study’s objective was to measure long-term changes in the management of syncope after implementing a syncope EBG in a single pediatric emergency department following the redistribution of resources to facilitate compliance over time.

Syncope and Palpitations: A Review

Syncope and palpitations are common complaints for patients presenting to their primary care provider. They represent symptoms that most often have a benign etiology but rarely can be the first warning sign of a serious condition, such as arrhythmias, structural heart disease, or noncardiac disease. The history, physical examination, and noninvasive testing can, in most cases, distinguish benign from pathologic causes. This article introduces syncope and palpitations, with emphasis on the differential diagnoses, initial presentation, diagnostic strategy, and various management strategies.

Etiology and treatment of chest pain in children and adolescents

Chest pain is a very common symptom in pediatric patients. Although children with chest pain are relatively unlikely to be suffering from significant cardiac diseases, it is important not to overlook life-threatening diseases. Complete history taking and physical examination––which involves identifying the duration of pain, onset, character, associated symptoms, and aggravating factors––are extremely important. The most common causes of pediatric chest pain are idiopathic and musculoskeletal, while less than 3% of cases are of cardiac origin. Recent studies indicate that chest pain resulted from psychosomatic disorders increases in non-cardiac chest pain in children and adolescents. The reassurance of the benign nature of chest pain is enough in most cases of non-cardiac chest pain in children and adolescents. When echocardiography is performed on patients with exertional chest pain, it is important to confirm the origin of coronary artery to exclude any coronary anomaly. Exertional chest pain, combined syncope, and symptoms of myocardial ischemia should raise the suspicion of significant cardiac diseases. When the chest pain is accompanied by red flag signs, physicians must refer the patients to a pediatric cardiologist.

Aetiological evaluation of chest pain in childhood and adolescence

BACKGROUND

Chest pain, as a common cause of hospital admissions in childhood, necessitates detailed investigations due to a wide range of differential diagnoses. In this study, we aimed to determine the distribution of diseases causing chest pain in children and investigate the clinical characteristics of children with chest pain.

METHODS

This study included 782 patients aged between 3 and 18 years who presented to a paediatric cardiology outpatient clinic with chest pain between April 2017 and March 2018. Aetiological causes and demographic features of the patients were analysed.

RESULTS

Most prevalent causes of chest pain were musculoskeletal system (33%) and psychogenic (28.4%) causes. Chest pain due to cardiac reasons was seen in eight patients (1%). Diseases of musculoskeletal and gastrointestinal systems and psychogenic disorders were significantly more common in male and female patients, respectively (p < 0.001 for all). In winter, patients' age and the number of patients with ≥12 years were higher than those in other seasons (p < 0.001). Most of the parents (70.8%) and patients (90.2%) thought that chest pain in their children was caused by cardiac causes.

CONCLUSION

Most of the diagnoses for chest pain in childhood period are benign and include the musculoskeletal system and psychogenic diseases. Although chest pain due to cardiac diseases is rare, a comprehensive analysis of medical history, detailed physical examination and cardiac imaging with echocardiography is needed to reach more accurate diagnoses.

Acute coronary syndrome in an adolescent with aortic root replacement (Bentall)

Acute coronary syndrome is a cause of cardiac-induced chest pain and rarely seen among childhood. It should be kept in mind in patients presenting with typical chest pain with a history of CHD and/or surgery, as this will lead to life-threatening complications and death. We present an adolescent with a history of Bentall operation who had acute coronary syndrome owing to coronary thrombosis as a result of inappropriate drug use.

Screening Pediatric Patients in New-Onset Syncope (SPINS) Study

Objectives. The primary objective is to determine the frequency of history findings associated with cardiac syncope. Second, to determine the frequency of abnormal electrocardiograms (EKG) in patients presenting with typical vasovagal syncope. Methods. Retrospective chart review from January 2006 to April 2017 of children aged 5 to 18 years presenting to the emergency department with a chief complaint of syncope. Target population was all patients with first episode of syncope and a documented EKG. Excluded patients were those with head trauma, drug intoxication, current pregnancy, seizure, and any endocrine problem. Patients with cardiac causes of syncope were identified by an abnormal EKG or echocardiogram. Specific history findings (past cardiac history, chest pain, palpitations, syncope with exercise, absence of prodrome with syncope) were compared with those with and without cardiac etiology of syncope. The possibility of missing a patient with cardiac cause of syncope based on specific history findings was identified. Results. Of the total 4115 visits of patients with chief complaints of syncope, 2293 patients (55.7%) met the inclusion criteria. Nine patients (0.39%) were identified with cardiac etiology of syncope. The remaining were determined to be of vasovagal origin. All patients with cardiac etiology of syncope were found to have one positive specific history findings. A total of 1972 patients were identified with absence of specific history findings; no patient had a cardiac etiology of syncope. Conclusions. This study identifies screening questions to identify cardiac syncope. Implementing these standard questions could potentially decrease resource utilization and time for evaluation as well as guide follow-up.

Syncope in a Child with Pulmonary Hypertension and Positive Gene Tests for Hereditary Hemorrhagic Telangiectasia and Long QT Syndrome

We present a 10-year-old boy with syncope who was found to have long-QT syndrome and severe Pulmonary Hypertension (PH) both in the absence of a secondary cause; to our knowledge, this is the first report with this unusual coexistence. His genetic tests were positive for hereditary hemorrhagic telangiectasia and Long QT Syndrome (LQTS) without any family history of PH or LQTS. We demonstrated that digital subtraction pulmonary angiography was more useful compared to CT angiogram to demonstrate pulmonary vascular changes which correlated with a noresponse to acute vasoreactivity testing during right heart catheterization. He has been stable for the last 2 years on Ambrisentan, Sildenafil, and Nadolol without recurrence of symptoms.

Apical hypertrophic cardiomyopathy: an uncommon cause of exertional chest pain in children

Apical hypertrophic cardiomyopathy is an uncommon morphologic variant of hypertrophic cardiomyopathy, which is rarely diagnosed in childhood. To date, very few cases of asymptomatic children younger than 18 years have been reported in the literature. To the best of our knowledge, this is the first case of paediatric apical hypertrophic cardiomyopathy presenting with exertional chest pain, with characteristic electrocardiographic, echocardiographic, MRI, and cardiac angiography findings.

Micturition Syncope in Childhood: How to Recognize and Manage It

Frequently, general pediatricians could face a patient with syncope, which represents approximately 1% to 3% of emergency visits. Micturition syncope is a transient loss of consciousness with onset immediately before, during, or after micturition. Literature evidence indicates that healthy young men are a population with major risk for presenting micturition syncope, with a peak of incidence around 40 to 50 years of age. Usually, this syncope occurs in the morning, after wake-up, or, more generally, when the male patients assume the orthostatic position after a period of supine position in a warm bed. No information on micturition syncope clinical presentation and prevalence in childhood is available in the literature, and probably, this kind of syncope is unrecognized in childhood. We describe 4 unreported pediatric patients with a diagnosis of micturition syncope and well-defined clinical presentation. In all patients, the syncope has been presented in the same conditions: in the morning; after wake-up; in an orthostatic position; just before, after, or during urinary bladder voiding; and with spontaneous recovery in few minutes. Interestingly, 1 patient presented with the syncope during urinary bladder voiding by autocatheterization. In our patients, all investigations made as the first approach in the pediatric emergency department did not show any abnormal results, possibly underlying the syncope episodes. By describing our experience, we want to underline the clinical presentation of micturition syncope and give to the clinicians the elements to recognize and manage it easily in children.

Clinical spectrum of previously undiagnosed pediatric cardiac disease

Previously undiagnosed pediatric cardiac disease represents a clinical challenge for the emergency physician. The clinical presentation of these disorders can mimic other conditions of the respiratory, gastrointestinal and neurologic systems at a time when the need for early identification and treatment is at a premium. A high index of suspicion and superb clinical acumen is required to make a timely diagnosis and initiate optimal care.

METHODS

A retrospective chart review using explicit criteria and a structured data collection process was performed on all children presenting with previously undiagnosed cardiac disease over a five and half year period.

RESULTS

Thirty-six patients were identified over a five and a half year period representing one patient per 4838 pediatric ED presentations. A diverse set of chief complaints, triage categories, clinical presentations and diagnoses were identified. Undiagnosed congenital lesions, acquired cardiac disease, dysrhythmias and infectious diseases of the heart were represented. The need for surgical intervention (22%) and mortality (6%) was substantial.

CONCLUSION

In the aggregate, these conditions occur at an important rate and represent a high risk subset of pediatric patients presenting to the emergency department. Individually, the conditions occur infrequently and 'pattern recognition' may not aid the clinician. Early diagnosis and prompt intervention is important in this population.

Distress in My Chest: The Approach to a Student Presenting With "Chest Pain"

Occasionally, students present with chest pain in the school setting. Therefore, it is important to develop a differential diagnosis for chest pain, to initiate stabilization of the student with life-threatening symptoms, and to triage these students to an appropriate level of care (back to the classroom, home with their guardian with follow up at their primary healthcare provider's office, or directly to the closest emergency department via emergency medical services). This article describes the initial assessment and management of a student presenting with chest pain.

Implementation of a Clinical Pathway for Chest Pain in a Pediatric Emergency Department

OBJECTIVE

To evaluate the impact of a pediatric emergency department (ED) chest pain clinical pathway on resource utilization.

METHODS

Motivated by perceived overuse of cardiology consultation for non-cardiac chest pain in the ED, clinicians from the Divisions of Cardiology and Emergency Medicine collaboratively developed a chest pain clinical pathway, educated staff, and implemented the pathway on March 1, 2014. We reviewed records of children aged 3 to 18 years without prior diagnoses of heart disease who presented to the ED with chest pain between March 1, 2013, and April 22, 2015. We compared diagnostic testing rates, ED length of stay, and cardiology consults before and after implementation of the pathway.

RESULTS

A total of 1687 patients were pathway eligible (675 patients preimplementation and 1012 postimplementation). Resource utilization was lower than expected before pathway implementation and remained low after implementation. There was a statistically significant reduction in rates of chest x-ray ordering after pathway implementation and ED length of stay but no change in other diagnostic testing or cardiology consultation. Follow-up in our health care system for pediatric chest pain increased from 15% to 29% with implementation, but none of these visits resulted in the diagnosis of a new cardiac condition. There were no instances identified where use of the pathway resulted in missed cardiac disease.

CONCLUSIONS

Implementation of a clinical pathway for pediatric chest pain did lead to a reduction in chest x-ray ordering in the ED and was associated with a higher rate of outpatient follow up for non-pathologic chest pain. Preimplementation utilization was lower than the prepathway perceptions of overuse suggested.

Heart Disease in Children

The pediatric cardiology field has developed rapidly over the past few decades. More children than ever born with congenital heart disease (CHD) are growing into adulthood. Primary care providers play a key role in diagnosis, management, and referral of children with CHD because many common cardiac complaints (eg, feeding intolerance, cyanosis, chest pain, palpitations, and syncope) are first addressed in the primary care setting. The spectrum of heart disease in children ranges from common complaints to complex single-ventricle physiology, acute myocarditis, and heart transplantation. This article reviews the pathophysiology and management of the most frequent cardiac conditions encountered in primary care.

Novel functional advanced echocardiography for the assessment of myocardial mechanics in children with neurocardiogenic syncope - a blinded prospective speckle tracking head-up tilt-table challenge study

Background

Data on left ventricular (LV) function in patients with neurocardiogenic syncope (NS) is conflicting in adults and lacking in children. The aim of this study was to analyze LV myocardial performance in children with NS at rest and during head-up tilt-table (HUTT) testing.

Methods

This is the first study to combine HUTT and speckle-tracking echocardiography (STE) in children with NS. 43 consecutive normotensive pediatric patients with NS (mean age 13.9 ± 2.6 years, 51% female) and 41 sex- and age-matched healthy controls were included in the study. The study groups consisted of 21 patients with a positive HUTT reaction (HUTT+) and 22 with a negative HUTT reaction (HUTT-). STE was used to analyze peak systolic LV myocardial strain and strain rate.

Results

Conventional echocardiographic parameters were similar in all analyzed groups. When compared to healthy controls, children with NS had depressed levels of circumferential strain rate (p = 0.032) and significantly depressed longitudinal strain rate (p <  0.001) at rest. Interestingly, during HUTT testing LV global strain and strain rate were similar in both groups. LV strain rate was lowest in HUTT+ followed by HUTT- and control subjects both at rest and during HUTT.

Conclusions

Resting LV longitudinal strain rate is attenuated in children with NS, especially in those with a positive HUTT response. This is further evidence that NS patients feature altered cardiac mechanics rendering them prone to vasovagal perturbations that can ultimately result in collapse.

Trial registration

Witten/Herdecke University ethics committee clinical study number: UWH-73-2014.

Pediatric Chest Pain-Low-Probability Referral: A Multi-Institutional Analysis From Standardized Clinical Assessment and Management Plans (SCAMPs®), the Pediatric Health Information Systems Database, and the National Ambulatory Medical Care Survey

We conducted a study to assess test characteristics of red-flag criteria for identifying cardiac disease causing chest pain and technical charges of low-probability referrals. Accuracy of red-flag criteria was ascertained through study of chest pain Standardized Clinical Assessment and Management Plans (SCAMPs®) data. Patients were divided into 2 groups: Group1 (concerning clinical elements) and Group2 (without). We compared incidence of cardiac disease causing chest pain between these 2 groups. Technical charges of Group 2 were analyzed using the Pediatric Health Information System database. Potential savings for the US population was estimated using National Ambulatory Medical Care Survey data. Fifty-two percent of subjects formed Group 1. Cardiac disease causing chest pain was identified in 8/1656 (0.48%). No heart disease was identified in patients in Group 2 ( P = .03). Applying red-flags in determining need for referral identified patients with cardiac disease causing chest pain with 100% sensitivity. Median technical charges for Group 2, over a 4-year period, were US2014$775 559. Eliminating cardiac testing of low-probability referrals would save US2014$3 775 182 in technical charges annually. Red-flag criteria were an effective screen for children with chest pain. Eliminating cardiac testing in children without red-flags for referral has significant technical charge savings.

Catecholaminergic Polymorphic Ventricular Tachycardia

Catecholaminergic polymorphic ventricular tachycardia is a rare cause of exercise-induced arrhythmia and sudden cardiac death in the pediatric patient. This arrhythmia is difficult to diagnose in the emergency department, given the range of presentations; thus, a familiarity with and high index of suspicion for this pathology are crucial. Furthermore, recognition of the characteristic electrocardiogram findings and knowledge of the management of the symptomatic patient are necessary, given the risk of arrhythmia recurrence and cardiac arrest. In this review, we discuss the presentation, differential diagnosis, and management of catecholaminergic polymorphic ventricular tachycardia for the emergency care provider.

Significance of red cell distribution width in the differential diagnosis between neurally mediated syncope and arrhythmic syncope in children

OBJECTIVES

The aim of the present study was to explore the predictive value of red cell distribution width as a means to differentiate between neurally mediated syncope and arrhythmic syncope in children.

METHOD

Patients were divided into a neurally mediated syncope group (n=72) and an arrhythmic syncope group (n=21) on the basis of clinical history, results of the head-up tilt test, electrocardiography, and 24-hour ambulatory electrocardiography. As controls, we recruited 55 healthy children. Red cell distribution width was determined for children in all groups. A receiver operating characteristic curve was drawn to study the predictive effect of red cell distribution width to differentiate between neurally mediated syncope and arrhythmic syncope.

RESULTS

Red cell distribution width was significantly higher in children with neurally mediated syncope than in children with arrhythmic syncope and the control group. A receiver operating characteristic curve on the predictive value of red cell distribution width in differentiating neurally mediated syncope from arrhythmic syncope showed that the area under the curve was 0.841 (95% confidence interval: 0.737-0.945, p<0.05). A red cell distribution width value of 12.8% as the cut-off value yielded a sensitivity of 80.6% and a specificity of 76.2% in discriminating between patients with neurally mediated syncope and arrhythmic syncope.

CONCLUSION

Red cell distribution width value of ⩾12.8% might be a useful adjunct for primary-care physicians to differentiate neurally mediated syncope from arrhythmic syncope in children.

An adolescent with chest pain and cardiac hemangioma

Less than 5% of chest pain in children is cardiac in origin, yet this complaint still represents one of the top reasons children are referred to pediatric cardiologists. This article describes a patient whose cardiac tumor illustrates the challenges of evaluating pediatric chest pain and the Standardized Clinical Assessment and Management Plan algorithm that can help.