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Wide QRS tachycardia

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https://www.readbyqxmd.com/read/28764236/clinical-significance-of-the-forsaken-avr-in-evaluation-of-tachyarrhythmias-a-reminder
#1
Dharmendra Jain, Pradeep Nigam, Manoj Indurkar, Riyas Chiramkara
INTRODUCTION: Mechanism of a regular, monomorphic Wide QRS Complex Tachycardia (WCT) is an important diagnostic challenge in day to day practice for the clinicians and affects further management and prognosis. Many of the WCT and Narrow Complex Tachycardia (NCT) produce certain characteristic changes in lead aVR by which we can differentiate between them. AIM: The present study was aimed to evaluate tachyarrhythmias in relation to lead aVR and to highlight the clinical significance of lead aVR, "The Neglected Lead"...
June 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28734703/the-differential-diagnosis-of-wide-qrs-complex-tachycardia
#2
William J Brady, Amal Mattu, Jeffrey Tabas, John D Ferguson
Wide complex tachycardia is defined as a cardiac rhythm with a rate greater than 100 beats/min (bpm) and a QRS complex duration greater than 0.10 to 0.12seconds (s) in the adult patient; wide complex tachycardia (WCT) in children is defined according to age-related metrics. The differential diagnosis of the WCT includes ventricular tachycardia and supraventricular tachycardia with aberrant intraventricular conduction, including both relatively benign and life-threatening dysrhythmias. This review focuses on the differential diagnosis of WCT with a discussion of strategies useful in making the appropriate diagnosis, when possible...
July 17, 2017: American Journal of Emergency Medicine
https://www.readbyqxmd.com/read/28709467/amitriptyline-induced-ventricular-tachycardia-a-case-report
#3
Khandker Mohammad Nurus Sabah, Abdul Wadud Chowdhury, Mohammad Shahidul Islam, Bishnu Pada Saha, Syed Rezwan Kabir, Shamima Kawser
BACKGROUND: In Bangladesh, each emergency physician faces amitriptyline overdose nearly a day. An acute cardiovascular complication, one of the worst complications is mainly responsible for the mortality in tricyclic overdose. Recently, we managed ventricular tachycardia in a young female presented with an impaired consciousness 10 h after intentionally ingesting 2500 mg amitriptyline. Here, we report it, discuss how the electrocardiography is vital to acknowledge and predict it and its' complications and also the recent update of the management of it...
July 14, 2017: BMC Research Notes
https://www.readbyqxmd.com/read/28620986/conversion-from-wide-to-narrow-qrs-complex-ventricular-tachycardia-what-is-the-mechanism
#4
José M Rubio, Pepa Sánchez Borque, Juan Benezet-Mazuecos, Ángel Miracle, Ana Del Río, Jerónimo Farré
No abstract text is available yet for this article.
June 16, 2017: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/28598506/atrial-overdrive-pacing-during-wide-qrs-tachycardia-with-rbbb-morphology-what-is-the-mechanism
#5
Krishna Kumar Mohanan Nair, Narayanan Namboodiri, Suji Karunakaran, Priya Giridhara, Abhilash Sreevilasam Pushpangadhan, Ajitkumar Valaparambil
No abstract text is available yet for this article.
June 9, 2017: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/28568774/atrial-premature-beat-on-wide-qrs-tachycardia-with-lbbb-morphology-what-is-the-mechanism
#6
Krishna Kumar Mohanan Nair, Narayanan Namboodiri, Priya Giridhara, Sreevilasam Pushpangadhan Abhilash, Ajitkumar Valaparambil
No abstract text is available yet for this article.
June 1, 2017: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/28515827/transient-left-bundle-branch-block-due-to-severe-hyperkalemia
#7
Kishore Kumar, Madhavi Biyyam, Amandeep Singh, Bharat Bajantri, Hassan Tariq, Suresh Kumar Nayudu, Sridhar Chilimuri
Hyperkalemia is a potentially life-threatening electrolyte imbalance that can lead to sudden death from cardiac arrhythmias and asystole. We present a case of transient left bundle branch block pattern on an electrocardiogram (ECG) secondary to hyperkalemia in a patient with history of end-stage renal disease. A 52-year-old man presented to the emergency room (ER) with chief complaints of weakness and lethargy after missing his regularly scheduled session of hemodialysis. A 12-lead ECG in the ER showed sinus tachycardia at 118 beats/min, wide QRS complexes, peaked T waves and left bundle branch block-like pattern...
April 2017: Cardiology Research
https://www.readbyqxmd.com/read/28506602/ventricular-tachycardia-score-a-novel-method-for-wide-qrs-complex-tachycardia-differentiation-explained
#8
Marek Jastrzębski, Piotr Kukla, Danuta Czarnecka
Philosophy, merits and limitations of a novel method for wide QRS complex tachycardia differentiation, based on a scoring system and called the ventricular tachycardia (VT) score, were explained. The following criteria were assigned one point: initial dominant R wave in V1; initial r>40 ms in V1 or V2; notched S in V1; initial R wave in aVR; lead II RWPT≥50 ms; and absence of an RS in leads V1-V6. Atrioventricular dissociation (including fusion/capture beats and partial dissociation) was assigned two points...
April 25, 2017: Journal of Electrocardiology
https://www.readbyqxmd.com/read/28483834/wide-qrs-complex-tachycardia-what-is-the-diagnosis
#9
Gaopin Wang, Renguang Liu, Qinghua Chang
No abstract text is available yet for this article.
May 9, 2017: Circulation
https://www.readbyqxmd.com/read/28458554/patient-characteristics-associated-with-false-arrhythmia-alarms-in-intensive-care
#10
Patricia R Harris, Jessica K Zègre-Hemsey, Daniel Schindler, Yong Bai, Michele M Pelter, Xiao Hu
INTRODUCTION: A high rate of false arrhythmia alarms in the intensive care unit (ICU) leads to alarm fatigue, the condition of desensitization and potentially inappropriate silencing of alarms due to frequent invalid and nonactionable alarms, often referred to as false alarms. OBJECTIVE: The aim of this study was to identify patient characteristics, such as gender, age, body mass index, and diagnosis associated with frequent false arrhythmia alarms in the ICU. METHODS: This descriptive, observational study prospectively enrolled patients who were consecutively admitted to one of five adult ICUs (77 beds) at an urban medical center over a period of 31 days in 2013...
2017: Therapeutics and Clinical Risk Management
https://www.readbyqxmd.com/read/28408648/azithromycin-causes-a-novel-proarrhythmic-syndrome
#11
Zhenjiang Yang, Joseph K Prinsen, Kevin R Bersell, Wangzhen Shen, Liudmila Yermalitskaya, Tatiana Sidorova, Paula B Luis, Lynn Hall, Wei Zhang, Liping Du, Ginger Milne, Patrick Tucker, Alfred L George, Courtney M Campbell, Robert A Pickett, Christian M Shaffer, Nagesh Chopra, Tao Yang, Bjorn C Knollmann, Dan M Roden, Katherine T Murray
BACKGROUND: The widely used macrolide antibiotic azithromycin increases risk of cardiovascular and sudden cardiac death, although the underlying mechanisms are unclear. Case reports, including the one we document here, demonstrate that azithromycin can cause rapid, polymorphic ventricular tachycardia in the absence of QT prolongation, indicating a novel proarrhythmic syndrome. We investigated the electrophysiological effects of azithromycin in vivo and in vitro using mice, cardiomyocytes, and human ion channels heterologously expressed in human embryonic kidney (HEK 293) and Chinese hamster ovary (CHO) cells...
April 2017: Circulation. Arrhythmia and Electrophysiology
https://www.readbyqxmd.com/read/28401858/wide-qrs-tachycardia-what-is-the-mechanism
#12
Krishna Kumar Mohanan Nair, Narayanan Namboodiri, Sreevilasam Pushpangadhan Abhilash, Anees Thajudeen, Ajitkumar Valaparambil
No abstract text is available yet for this article.
January 2017: Indian Pacing and Electrophysiology Journal
https://www.readbyqxmd.com/read/28343443/lacosamide-induced-recurrent-ventricular-tachycardia-in-the-acute-care-setting
#13
Theodore J Berei, Matthew P Lillyblad, Adrian K Almquist
Lacosamide is a new-generation antiepileptic drug (AED) most commonly used adjunctively in the setting of partial-onset seizures refractory to traditional therapy. We describe the first case report, to our knowledge, of a patient who developed recurrent, sustained ventricular tachycardia with multiple administrations of lacosamide in an acute setting. A 70-year-old woman with a history significant for valvular heart disease was admitted to the inpatient cardiology service for worsening heart failure. On hospital day 7, she received a bioprosthetic aortic valve...
January 1, 2017: Journal of Pharmacy Practice
https://www.readbyqxmd.com/read/28298182/electrocardiogram-his-bundle-potentials-can-be-recorded-noninvasively-beat-by-beat-on-surface-electrocardiogram
#14
Gaopin Wang, Renguang Liu, Qinghua Chang, Zhaolong Xu, Yingjie Zhang, Dianzhu Pan
BACKGROUND: The micro waveform of His bundle potential can't be recorded beat-to-beat on surface electrocardiogram yet. We have found that the micro-wavelets before QRS complex may be related to atrioventricular conduction system potentials. This study is to explore the possibility of His bundle potential can be noninvasively recorded on surface electrocardiogram. METHODS: We randomized 65 patients undergoing radiofrequency catheter ablation of paroxysmal superventricular tachycardia (exclude overt Wolff-Parkinson-White syndrome) to receive "conventional electrocardiogram" and "new electrocardiogram" before the procedure...
March 15, 2017: BMC Cardiovascular Disorders
https://www.readbyqxmd.com/read/28238302/the-effects-of-pure-potassium-channel-blocker-nifekalant-and-sodium-channel-blocker-mexiletine-on-malignant-ventricular-tachyarrhythmias
#15
Sou Otuki, Kanae Hasegawa, Hiroshi Watanabe, Goro Katsuumi, Nobue Yagihara, Kenichi Iijima, Akinori Sato, Daisuke Izumi, Hiroshi Furushima, Masaomi Chinushi, Yoshifusa Aizawa, Tohru Minamino
BACKGROUND: Patients with repetitive ventricular tachyarrhythmias - so-called electrical storm - frequently require antiarrhythmic drugs. Amiodarone is widely used for the treatment of electrical storm but is ineffective in some patients. Therefore, we investigated the efficacy of stepwise administration of nifekalant, a pure potassium channel blocker, and mexiletine for electrical storm. METHODS: This study included 44 patients with repetitive ventricular tachyarrhythmias who received stepwise therapy with nifekalant and mexiletine for electrical storm...
May 2017: Journal of Electrocardiology
https://www.readbyqxmd.com/read/28188971/wide-qrs-tachycardia-with-left-bundle-branch-block-morphology-what-is-the-mechanism
#16
Krishna Kumar Mohanan Nair, Narayanan Namboodiri, Krishna Chaitanya, Sreevilasam Pushpangadhan Abhilash, Anees Thajudeen, Ajitkumar Valaparambil
No abstract text is available yet for this article.
June 2017: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/28139199/wide-qrs-in-a-2-month-infant-associated-with-recurrent-ventricular-tachycardia-a-case-of-brugada-like-syndrome
#17
W Jomaa, W Selmi, S Hamdi, M A Azaiez, A El Hraiech, K Ben Hamda, F Maatouk
We report the case of a 2-month old infant who experienced recurrent sustained ventricular tachycardia (VT) in a structurally normal heart. Resting electrocardiogram (ECG) showed wide QRS with a complete right bundle branch bloc (RBBB) morphology. There was no family history of syncope or sudden death, but the ECGs of the father and the brother showed incomplete RBBB with negative T waves on V1 lead. This case seems to fit well with the newly defined entity of Brugada-like syndrome with a highly suspected genetic underlying disposition...
February 2017: Annales de Cardiologie et D'angéiologie
https://www.readbyqxmd.com/read/28045691/ecg-of-the-month-wide-qrs-tachycardias
#18
D Luke Glancy, Theresa A Mills
A 61-year-old man came from out of state to attend a football game. He felt well during the game, but when he stood up to leave, he became dizzy and dyspneic. The symptoms lasted 15 to 20 minutes, and when the paramedics arrived, they diagnosed an idioventricular rhythm and brought the patient to the emergency department where a 12-lead electrocardiogram (ECG) was recorded (Figure 1).
November 2016: Journal of the Louisiana State Medical Society: Official Organ of the Louisiana State Medical Society
https://www.readbyqxmd.com/read/27909497/persistent-atrial-fibrillation-and-atrial-flutter-complicated-by-tachycardiomyopathy-because-of-intermittent-conduction-through-accessory-pathway
#19
L Valeri, A Coppolino, G Rossetti, A Vado, G Amoroso, G Bricco, A Battisti, L Correndo, S Dogliani, A Magliarditi, D Pancaldo, M De Benedictis, A Bassignana, B Doronzo
The term tachycardiomyopathy refers to a specific form of tachycardia-related cardiomyopathy caused by supraventricular or ventricular tachyarrhytmias that are both associated with ventricular rates higher than 120 bpm. The arrhythmias which are most frequently associated with these forms of heart disease are atrial fibrillation and atrial flutter, particularly found in the elderly population. The most frequent clinical manifestation is heart failure. In this case we are reporting a clinical case of a patient that came to our attention because of an episode of heart failure associated with atrial fibrillation and atrial flutter...
April 2016: Journal of Atrial Fibrillation
https://www.readbyqxmd.com/read/27844192/-right-bundle-branch-block-during-right-ventricular-pacing
#20
Harilaos Bogossian, Fuad Hasan, Gerrit Frommeyer, Bernd Lemke, Markus Zarse
INTRODUCTION: We describe the case of a 78-year-old patient who presented for ablation of a wide complex tachycardia with right bundle branch block (RBBB) morphology. A pacemaker spike at the QRS onset indicated supraventricular tachycardia with AV synchronous ventricular pacemaker activation. METHODS: Correct positioning of the ventricular lead in the right ventricular apex was confirmed by fluoroscopy and echocardiography, excluding malpositioning of the right ventricular lead...
November 14, 2016: Herzschrittmachertherapie & Elektrophysiologie
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