Concealed conduction of premature ventricular complexes resulting in AV nodal block
Publication date: Available online 12 May 2017 Source:Journal of Arrhythmia Author(s): Ying Zi Oh, Vern Hsen Tan, Kelvin CK Wong
AbstractBackgroundHemodialysis (HD) sessions induce changes in plasma electrolytes that lead to modifications of QT interval, virtually associated with dangerous arrhythmias. It is not known whether such a phenomenon occurs even during peritoneal dialysis (PD). The aim of the study is to analyze the relationship between dialysate and plasma electrolyte modifications and QT interval during a PD exchange.MethodsIn 15 patients, two manual PD 4-h exchanges were performed, using two isotonic solutions with different calcium concentration (Ca++1.25 and Ca1.75++ mmol/L). Dialysate and plasma electrolyte concentration and QT ...
Publication date: Available online 17 August 2019Source: American Heart JournalAuthor(s): Nicholas J Kamp, Sana M Al-KhatibAbstractThe subcutaneous implantable cardioverter defibrillator (S-ICD) is a completely extrathoracic device that has recently been FDA approved for the prevention of sudden cardiac death in select populations. Although the transvenous implantable cardioverter defibrillator (TV-ICD) has a proven mortality benefit in multiple patient populations, there are significant risks both with implantation and years after its placement. The S-ICD may help prevent some of these complications. Currently, the S-ICD ...
I first observed the treatment of arrhythmias by catheter ablation in Paris when I did a sabbatical in 1979-1980 under the supervision of Dr. Guy Fontaine. At that time, catheter ablation was performed using high energy DC shock (fulguration) by inserting a catheter localized to the site of ventricular arrhythmias (VA). Fulguration was limited to areas of thick myocardium to avoid perforation. Therefore, only ablation of the AV node, septal accessory pathways and left ventricular tachycardia (VT) could be performed.
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Publication date: Available online 15 August 2019Source: American Heart JournalAuthor(s): Fatima Ali-Ahmed, Frederik Dalgaard, Sana M. Al-KhatibAbstractMyocarditis is a major cause of sudden cardiac death (SCD) and dilated cardiomyopathy (DCM) in young adults. Cardiac magnetic resonance (CMR) is the established tool for the diagnosis of myocarditis, and late gadolinium enhancement (LGE) detected on CMR imaging is the strongest independent predictor of SCD, all-cause mortality, and cardiac mortality. Several other factors have been associated with SCD or cardiac transplantation including New York Heart Association functiona...
Authors: Zhang X, Liu X Abstract Mid-ventricular obstructive hypertrophic cardiomyopathy (MVOHC) with apical aneurysm is a rare type of cardiomyopathy. It is associated with an elevated risk of ventricular arrhythmias, thromboembolism, heart failure and sudden cardiac death. The present case study reports on a patient with MVOHC and apical aneurysm who developed ventricular arrhythmias and heart failure. The patient received an implantable cardioverter defibrillator for prevention of fatal arrhythmias. Ventricular tachycardia was terminated by increased doses of amiodarone and β-blocker. Transthoracic echocard...
In conclusion, we identified a novel hERG channel activator HW-0168 that can be used for studying the physiological role of hERG in cardiac myocytes and may be beneficial for treating long QT syndrome.
Conclusions: Pulmonary malignant pathologies are more likely to develop POAF due to the need for lung resection and possibly mediastinal lymphadenectomy that stimulates the heart and pericardium and the vagus nerve. PMID: 31410090 [PubMed]
Conclusion. This study did not find any significant influence of CA on the long-term durability of CIED endocardial leads. Reported risk factors were consistent with general population of CIED patients. PMID: 31407601 [PubMed - as supplied by publisher]
We report a patient with severe VDD that resulted in TdP and cardiac arrest. Post-resuscitation work up illustrated prolonged QTc interval of 620 ms, significant hypocalcemia, and severe VDD of 4 (normal 30–80) ng/mL. After high dose vitamin D/calcium supplements, repeat electrocardiogram revealed normal QTc interval of 423 ms. During hospitalization, the patient suffered no additional arrhythmias and QTc continued to be normal.
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