Ictal Asystole: Relation to Reflex Syncope and Role of Cardiac Pacing

Syncope ◽  
2020 ◽  
pp. 299-306
Author(s):  
Haruhiko Abe ◽  
Ritsuko Kohno
Keyword(s):  
Cardiac Pacing ◽  
Reflex Syncope

scholarly journals Computational Analysis of Coronary Blood Flow: The Role of Asynchronous Pacing and Arrhythmias

Mathematics ◽  
2020 ◽  
Vol 8 (8) ◽  
pp. 1205
Author(s):  
Timur Gamilov ◽  
Philipp Kopylov ◽  
Maria Serova ◽  
Roman Syunyaev ◽  
Andrey Pikunov ◽  
...  
Keyword(s):  
Heart Rate ◽  
Blood Flow ◽  
Coronary Blood Flow ◽  
Long Qt Syndrome ◽  
Premature Ventricular Contraction ◽  
Cardiac Pacing ◽  
Long Qt ◽  
Computational Evaluation ◽  
Qt Syndrome

In this work we present a one-dimensional (1D) mathematical model of the coronary circulation and use it to study the effects of arrhythmias on coronary blood flow (CBF). Hydrodynamical models are rarely used to study arrhythmias’ effects on CBF. Our model accounts for action potential duration, which updates the length of systole depending on the heart rate. It also includes dependency of stroke volume on heart rate, which is based on clinical data. We apply the new methodology to the computational evaluation of CBF during interventricular asynchrony due to cardiac pacing and some types of arrhythmias including tachycardia, bradycardia, long QT syndrome and premature ventricular contraction (bigeminy, trigeminy, quadrigeminy). We find that CBF can be significantly affected by arrhythmias. CBF at rest (60 bpm) is 26% lower in LCA and 22% lower in RCA for long QT syndrome. During bigeminy, trigeminy and quadrigeminy, respectively, CBF decreases by 28%, 19% and 14% with respect to a healthy case.

scholarly journals Standardized algorithm for cardiac pacing in older patients affected by severe unpredictable reflex syncope: 3-year insights from the Syncope Unit Project 2 (SUP 2) study

EP Europace ◽  
2015 ◽  
Vol 18 (9) ◽  
pp. 1427-1433 ◽  
Author(s):  
Michele Brignole ◽  
Francesco Arabia ◽  
Fabrizio Ammirati ◽  
Marco Tomaino ◽  
Fabio Quartieri ◽  
...  
Keyword(s):  
Older Patients ◽  
Cardiac Pacing ◽  
Reflex Syncope

Reflex syncope

ESC CardioMed ◽  
2018 ◽  
pp. 2024-2028
Author(s):  
Jean-Claude Deharo
Keyword(s):  
Carotid Sinus ◽  
Vasovagal Syncope ◽  
Cardiac Pacing ◽  
Tilt Test ◽  
Specific Situation ◽  
Diagnostic Strategy ◽  
Reflex Syncope ◽  
Specific Subgroup ◽  
Recent Developments ◽  
Head Up Tilt Test

Reflex syncope, also called neurally mediated syncope, accounts for 56–73% of the aetiologies of syncope, with a balanced incidence over the various age categories. The most common form is ‘vasovagal syncope’ where the trigger is pain, fever, instrumentation, emotion, or orthostatic stress; ‘situational syncope’ refers to syncope triggered by a specific situation, that is, micturition, defecation, swallowing, cough; and ‘carotid sinus syncope’, which may be triggered by carotid sinus manipulation or diagnosed in patients with syncope and positive carotid sinus massage. The term ‘atypical reflex syncope’ is used to describe reflex syncope occurring without an apparent trigger: the diagnosis is mainly based on history, exclusion of other causes of syncope, and a positive head-up tilt test. Although recent developments have prompted new pathophysiological hypotheses, including the adenosine pathway, the diagnostic strategy for reflex syncope remains mainly based on clinical evaluation and very few ancillary diagnostic tests. The pharmacological armament is still very limited while new perspectives have been opened for specific subgroup of patients. Regarding the very rare patients who are candidates for permanent cardiac pacing, a new pragmatic approach may help their selection and the prediction of the effect of pacing.

Permanent cardiac pacing as primary therapy for neurocardiogenic (reflex) syncope

2004 ◽  
Vol 14 (S1) ◽  
pp. i76-i79 ◽  
Author(s):  
Daniel J. Kosinski ◽  
Blair P. Grubb ◽  
Douglas A. Wolfe
Keyword(s):  
Cardiac Pacing ◽  
Primary Therapy ◽  
Reflex Syncope

Vasovagal syncope with asystole: the role of cardiac pacing

2017 ◽  
Vol 27 (4) ◽  
pp. 245-251 ◽  
Author(s):  
Michele Brignole ◽  
Marco Tomaino ◽  
Alessio Gargaro
Keyword(s):  
Vasovagal Syncope ◽  
Cardiac Pacing

The role of cardiac pacing in carotid sinus syndrome: a meta-analysis

2014 ◽  
Vol 24 (3) ◽  
pp. 127-134
Author(s):  
Bing-Wei Chen ◽  
Zhi-Guang Wang ◽  
Na-Qiang Lv ◽  
Yan-Mei Cheng ◽  
Ai-Min Dang
Keyword(s):  
Carotid Sinus ◽  
Meta Analysis ◽  
Cardiac Pacing ◽  
Carotid Sinus Syndrome

Role of cardiac pacing in congenital complete heart block

2017 ◽  
Vol 15 (11) ◽  
pp. 853-861 ◽  
Author(s):  
Stephanie F. Chandler ◽  
Francis Fynn-Thompson ◽  
Douglas Y. Mah
Keyword(s):  
Heart Block ◽  
Complete Heart Block ◽  
Cardiac Pacing ◽  
Congenital Complete Heart Block

The Role of Cardiac Pacing in Heart Block Complicating Acute Myocardial Infarction

1983 ◽  
pp. 223-234
Author(s):  
A. Raineri ◽  
G. Mercurio ◽  
B. Candela ◽  
G. L. Piraino ◽  
P. Assennato
Keyword(s):  
Myocardial Infarction ◽  
Acute Myocardial Infarction ◽  
Heart Block ◽  
Cardiac Pacing

Update on Cardiac Pacing in Reflex Syncope

Syncope ◽  
2020 ◽  
pp. 287-298
Author(s):  
Justin Z. Lee ◽  
Win-Kuang Shen
Keyword(s):  
Cardiac Pacing ◽  
Reflex Syncope
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