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Holter Monitor (holter + monitor)
Selected AbstractsCardiac magnetic resonance imaging in the evaluation of cardiac sarcoidosis: an Australian single-centre experienceINTERNAL MEDICINE JOURNAL, Issue 2 2009V. Manins Abstract Background:, Cardiac involvement in systemic sarcoidosis is common; however, current diagnostic tools are imprecise. Recognition of cardiac sarcoidosis (CS) is important as it has a relatively poor prognosis. Gadolinium-enhanced cardiac magnetic resonance imaging (Gad-CMR) is emerging as an excellent technique in determining the presence of and extent to which cardiac muscle is affected by sarcoidosis. Methods:, A retrospective analysis was performed on all patients with biopsy-proven systemic sarcoidosis referred for Gad-CMR scanning to evaluate potential cardiac involvement. All patients also underwent an electrocardiogram, Holter monitor and echocardiography. Gallium-67 radionuclide investigation, positron emission tomography and cardiac biopsy were ordered at the discretion of the treating physician. Results:, Eleven of the 20 patients had Gad-CMR images supportive of the diagnosis of CS. Eight of these 11 patients met the Japanese Ministry of Health and Welfare (JMHW) criteria for the diagnosis of CS; three abnormal Gad-CME scans consistent with diagnosis of CS were seen in patients who did not meet JMHW criteria. No patients with normal Gad-CMR scan met JMHW criteria for CS. Conclusion:, These findings suggest that Gad-CMR is potentially superior to the JMHW criteria in the diagnosis of cardiac sarcoidosis. [source] The Diagnosis of Cardiac Arrhythmias: A Prospective Multi-Center Randomized Study Comparing Mobile Cardiac Outpatient Telemetry Versus Standard Loop Event MonitoringJOURNAL OF CARDIOVASCULAR ELECTROPHYSIOLOGY, Issue 3 2007STEVEN A. ROTHMAN M.D. Introduction: Ambulatory electrocardiographic monitoring systems are frequently used in the outpatient evaluation of symptoms suggestive of a cardiac arrhythmia; however, they have a low yield in the identification of clinically significant but infrequent, brief, and/or intermittently symptomatic arrhythmias. The purpose of this study was to compare the relative value of a mobile cardiac outpatient telemetry system (MCOT) with a patient-activated external looping event monitor (LOOP) for symptoms thought to be due to an arrhythmia. Methods and Results: The study was a 17-center prospective clinical trial with patients randomized to either LOOP or MCOT for up to 30 days. Subjects with symptoms of syncope, presyncope, or severe palpitations who had a nondiagnostic 24-hour Holter monitor were randomized. The primary endpoint was the confirmation or exclusion of a probable arrhythmic cause of their symptoms. A total of 266 patients who completed the monitoring period were analyzed. A diagnosis was made in 88% of MCOT subjects compared with 75% of LOOP subjects (P = 0.008). In a subgroup of patients presenting with syncope or presyncope, a diagnosis was made in 89% of MCOT subjects versus 69% of LOOP subjects (P = 0.008). MCOT was superior in confirming the diagnosis of clinical significant arrhythmias, detecting such events in 55 of 134 patients (41%) compared with 19 of 132 patients (15%) in the LOOP group (P < 0.001). Conclusions: MCOT provided a significantly higher yield than standard cardiac loop recorders in patients with symptoms suggestive of a significant cardiac arrhythmia. [source] Frequent Premature Ventricular Complexes Originating from the Right Ventricular Outflow Tract Are Associated with Left Ventricular DysfunctionANNALS OF NONINVASIVE ELECTROCARDIOLOGY, Issue 1 2008Yumiko Kanei M.D. Background: Recent case series have shown reversal of left ventricular (LV) dysfunction after catheter ablation of frequent premature ventricular complexes (PVCs) originating from the right ventricular outflow tract (RVOT). We conducted a retrospective study to evaluate the prevalence of patients with frequent RVOT PVCs (,10 per hour) and LV dysfunction. Methods: RVOT PVC was defined as PVC with left bundle branch block morphology and inferior axis on a 12-lead ECG. We included patients with frequent RVOT PVCs on 24-hours Holter monitor who had a recent evaluation of LV function. Patients with structural heart disease, including obstructive coronary artery disease, were excluded. Patients were divided into three groups based on the number of PVCs (<1000/24 hour, 1000,10,000/24 hour, ,10,000/24 hour), and the prevalence of LV dysfunction was evaluated in each group. Results: Our analysis included 108 patients: 24 patients had <1000PVCs/24 hour, 55 patients had 1000,10,000PVCs/24 hour, and 29 patients had ,10,000PVCs/24 hour. The prevalence of LV dysfunction was 4%, 12%, and 34%, respectively (P = 0.02). With logistic regression analysis, non-sustained ventricular tachycardia was an independent predictor of LV dysfunction with odds ratio of 3.6 (1.3,10.1). Conclusion: We demonstrated a significant association between frequent RVOT PVCs and LV dysfunction in patients without structural heart disease. [source] Coronary Slow Flow Phenomenon and Risk for Sudden Cardiac Death Due to Ventricular Arrhythmias: A Case Report and Review of LiteratureCLINICAL CARDIOLOGY, Issue 8 2008Dr. Shoaib Saya Abstract We report a case of coronary slow flow phenomenon (CSFP) in a patient who underwent coronary angiography due to anginal chest pain and recurrent syncope with complete normalization of flow after intracoronary adenosine. He was noted to have multiple episodes of nonsustained ventricular tachycardia on holter monitor and increased QTc dispersion on surface electrocardiogram (EKG). He responded very well to oral dipyridamole therapy with complete resolution of his symptoms and no episodes of ventricular tachycardia on the event recorder at 3 months. We review the diagnosis and clinical features of CSFP and its association with increased QTc dispersion and the role of oral dipyridamole therapy in this condition. Copyright © 2007 Wiley Periodicals, Inc. [source] | ||||||||||