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      The value of Holter monitoring in the assessment of Pediatric patients

      research-article
      , MD 1 , , MD, MRCP 2
      Indian Pacing and Electrophysiology Journal
      Indian Heart Rhythm Society
      Holter, pediatric, arrhythmias

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          Abstract

          Aims

          Holter monitoring (HM) has been established as one of the most effective noninvasive clinical tools in the diagnosis, assessment and risk stratification of cardiac patients. However, studies in the pediatric age group are limited. The present work aims at determining the value of HM in the diagnosis and management of children.

          Settings and Design

          Retrospective study conducted at a tertiary referral arrhythmolology service.

          Methods and Material

          Holter records of 1319 pediatric patients (54.1% males and 45.9% females) were reviewed. Their average age was 6.7± 4.1 years (5 days-16 years). Indications for which Holter monitoring was done were analysed as well as all the abnormalities diagnosed and factors that may increase Holter yield.

          Statistical analysis used

          Statistical Package of social science (SPSS) version 9,0 was used for analysis of data.

          Results

          The most common indications were palpitations (19.8%), syncope (17.8%), cardiomyopathy (12.6%), chest pain (10%), evaluation of antiarrhythmic therapy (6.8%), postoperative assessment (2.6%) and complete AV Block (2.4%). A sum of 141 Holter recordings were found abnormal with a total diagnostic yield of 10.7%. The highest contribution to diagnosis was in postoperative assessment (32.4%) and in cardiomyopathy (19.9%) where the most common abnormalities were frequent supraventricular / ventricular premature beats, supraventricular tachycardia, ventricular tachycardia and AV block. Diagnostic yield was low in patients with palpitations (5.7%) and syncope (0.4%). An abnormal ECG was significantly associated with a higher diagnostic yield (p=0.0001). None of the children with chest pain had abnormal Holter recordings.

          Conclusions

          HM has an extremely valuable role in the assessment of high risk patients (postoperative and cardiomyopathy). However in children with palpitations, syncope and chest pain HM has a low yield. In this group of patients an abnormal ECG is more likely to be associated with abnormal Holter recordings.

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          Most cited references38

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          ACC/AHA Guidelines for Ambulatory Electrocardiography. A report of the American College of Cardiology/American Heart Association Task Force on Practice Guidelines (Committee to Revise the Guidelines for Ambulatory Electrocardiography). Developed in collaboration with the North American Society for Pacing and Electrophysiology.

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            Syncope in children and adolescents.

            The objectives of this study were to 1) define the incidence of syncope coming to medical attention among children and adolescents, 2) determine the outcome of syncope in these patients, and 3) determine changes over time in the evaluation and charges for evaluating this problem. Syncope occurs commonly in children and adolescents. However, the mid- and long-term outcome of children and adolescents who experience syncope is unknown. Utilizing the Rochester Epidemiology Project, we determined the incidence, outcome and charges for medical evaluation for patients seeking medical attention for syncope during an early 5-year period (1950 to 1954) and a more recent 5-year period (1987 to 1991). The incidence of syncope coming to medical attention was 71.9 and 125.8/100,000 population for the early and more recent cohort, respectively. The incidence was higher for female than for male patients. The incidence peaked in 15- to 19-year old patients. Acute illness and noxious stimuli were associated with 24% and 23% of the episodes, respectively. Although long-term survival was not different from that of the general population, one child died suddenly, and another had hereditary prolonged QT interval syndrome. These were two of only six patients who had exertional syncope. Total charges for evaluation of syncope were similar in the two time periods. However, charges for testing procedures were greater for the more recent cohort. In general, syncope in children and adolescents is a benign event. Syncope occurring during exercise may identify patients with a potentially fatal condition. Detailed evaluation should be considered for patients who have syncope during exercise or who have a family history of syncope, sudden death, myocardial disease or arrhythmias. It may be prudent to obtain an electrocardiogram for all patients who seek medical attention for syncope.
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              Conditions leading to pediatric cardiology consultation in a tertiary academic hospital.

              To determine the basis for cardiac consultations for pediatric patients in an academic hospital setting. The activities of the cardiology consultation service were tabulated for 12 months, from July 2001 to June 2002. Patients were identified from 4 sources, ie, a monthly log of patient encounters maintained by the consultation service, encounter forms submitted to the billing office, consultation notes maintained in a central file, and a departmental list of echocardiography studies. Patients who required clearance for noncardiac surgical procedures were generally evaluated in the cardiology clinic and not by the consultation service. Patient data were obtained from consultation and echocardiography reports and from hospital computer-based records for discharge summaries for inpatient admissions, emergency department encounter summaries, and laboratory reports. For each patient, consultations were tabulated as separate encounters if they occurred on different days in the emergency department, during separate admissions, or for different clinical concerns during a single admission. A total of 2071 consultations were performed for 1724 patients. The age at the time of consultation was 6.6 +/- 9.3 years (median: 1.2 years; range: 1 day to 60.6 years). A total of 1507 patients (87.4%) had a single consultation; 217 patients (12.6%) had multiple encounters, ranging from 2 to 9, accounting for 564 consultations (27.2%). Clinical concerns included murmurs (18.5%), cardiac function (12.7%), arrhythmias (12.7%), intercurrent illnesses among cardiac patients (11.3%), cyanosis (6.3%), syndromes (5.7%), chest pain (5.2%), syncope/dizziness (4.5%), subacute endocarditis (4.4%), follow-up evaluations of fetal diagnoses (4.3%), Kawasaki disease (3.4%), cor pulmonale (3%), recent cardiac surgery or catheterization (1.6%), cerebrovascular accidents (1.2%), and miscellaneous conditions. Four diagnoses accounted for 91% of murmur evaluations, ie, patent ductus arteriosus, ventricular septal defects, innocent murmurs, and pulmonary branch murmur of infancy. The most common murmur diagnosis in the neonatal intensive care unit was patent ductus arteriosus (68%), in the well-child nursery was ventricular septal defect (64%), and on the medical ward was innocent murmur (62%). The most common basis for evaluation of function was oncologic disease. Among patients evaluated for function, there were 3 new diagnoses of structural congenital heart disease, all involving neonates with aortic arch obstruction. Approximately two-thirds of arrhythmias were supraventricular in origin. The most common arrhythmias requiring treatment were supraventricular tachycardia and atrial flutter/fibrillation, the latter occurring mainly among older patients with structural heart disease. Diagnoses made with fetal echocardiography accounted for 14.3% of newborn consultations and included 83% of patients with cyanotic cardiac disease. Three syndromes accounted for 57% of consultations for this indication, ie, VACTERL association (vertebral anomalies, anal atresia, congenital heart disease, tracheoesophageal fistula, renal abnormality, and limb anomalies), trisomy 21, and infant of diabetic mother. Chest pain and syncope/dizziness were frequently evaluated in the emergency department and, in this setting, accounted for 13 and 10% of all evaluations and 19 and 25% of evaluations for new patients, respectively. For patients evaluated for chest pain, the most common basis was musculoskeletal/costochondritic (42%) or idiopathic (22%). There was a cardiac or pericardial basis in 11% of cases; these patients either had known heart disease associated with this complication or systemic symptoms, abnormal cardiac auscultatory findings, and electrocardiographic features of pericarditis. Syncope/dizziness most commonly had a vasovagal (50.5%) or orthostatic (24.7%) basis. There was a cardiac basis in 5.4% of cases; these patients were more likely to have symptoms associated with exercise. Although endocarditis was a frequent clinical concern (91 patients), only 3 cases were identified, involving 2 patients with structural heart disease and 1 neonate with an indwelling intracardiac catheter. Two other patients had central venous lines, intravascular thrombus, and fungemia. Kawasaki disease was the most common acquired condition leading to consultation. Cor pulmonale was most commonly screened among patients with congenital diaphragmatic hernia, chronic lung disease of prematurity, pneumonitis, reactive airway disease, or cystic fibrosis. Patients with recent cardiac surgery or cardiac catheterization typically had postpericardiotomy syndrome or complications associated with vascular access. Approximately 20% of cases of cerebrovascular accidents had a cardiac basis. Although a variety of conditions were assessed, some were encountered more frequently. Future educational curricula developed for cardiac training of pediatric residents should appropriately emphasize conditions necessitating consultation.
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                Author and article information

                Journal
                Indian Pacing Electrophysiol J
                Indian Pacing Electrophysiol J
                Indian Pacing and Electrophysiology Journal
                Indian Heart Rhythm Society
                0972-6292
                Oct-Dec 2007
                22 October 2007
                : 7
                : 4
                : 204-214
                Affiliations
                [1 ]Lecturer of Pediatrics, Faculty of Medicine, Cairo University
                [2 ]Asst. Professor of Pediatrics, Faculty of Medicine, Cairo University
                Author notes
                Address for correspondence: Ranya Aly Hegazy, Department of Pediatrics, Faculty of Medicine, Cairo University, Egypt. E-mail: r_hegazy@ 123456hotmail.com
                Article
                ipej070204-00
                2018732
                17957268
                4ee9326c-9608-4aa5-a4cd-e7705e020ee8
                Copyright: © 2007 Hegazy et al.

                This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

                History
                Categories
                Original Article

                Cardiovascular Medicine
                pediatric,arrhythmias,holter
                Cardiovascular Medicine
                pediatric, arrhythmias, holter

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