WordNet

occurring in pairs; "a bigeminal pulse"

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出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2013/11/27 14:50:59」(JST)

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Bigeminy as seen on a 12 lead ECG

A rhythm strip demonstrating bigeminy

simple ECG of a Supraventricular Bigeminy

Bigeminy (Latin: Bi-Two Gemini-twins) is a descriptor for a heart arrhythmia in which abnormal heart beats occur every other concurrent beat. A typical example is with bigeminal premature ventricular beats, also known as a premature ventricular contractions/complexes (PVC). Following the PVC there is a pause and then the normal beat returns - only to be followed by another PVC. The continuation of this pairing of beats is an example of bigeminy.

These descriptors can increase depending on the number of beats involved in the abnormal system. If every other beat is abnormal, you can describe it as bigeminal. If every third beat is aberrant, it is trigeminal; every fourth would be quadrigeminal. Typically, if every fifth or more beat is abnormal, the aberrant beat would be termed occasional.

Bigeminy is contrasted with couplets, which are paired abnormal beats. If, for example, these concurrent PVCs number three, they are called triplets and are considered as a brief run of non-sustained Ventricular tachycardia or NS-VT.

PVCs are not the only aberrant beat that makes use of these adjectives; others are premature atrial contractions, parasystole, and escape complexes.

Examples[edit]

Bigeminal premature ventricular contractions = Normal, PVC, Normal, PVC...
Trigeminal premature atrial contractions = Normal, Normal, PAC, Normal, Normal, PAC...
Quadrageminal premature ventricular contractions = Normal, Normal, Normal, PVC; Normal, Normal, Normal, PVC...
Occasional escape complexes: Normal, Normal, Normal, Normal, Pause, Escape...

Bigeminal Couplets: Normal, Normal, PVC, PVC, Normal, Normal, PVC, PVC...
NS-VT: Normal, Normal, PVC, PVC, PVC, PVC, Normal, Normal, PVC....etc

UpToDate Contents

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1. 心室性期外収縮の臨床的意義および治療 clinical significance and treatment of ventricular premature beats
2. 心電図チュートリアル：心室性不整脈 ecg tutorial ventricular arrhythmias
3. 心室性期外収縮の有病割合および評価 prevalence and evaluation of ventricular premature beats
4. 上室性期外収縮 supraventricular premature beats
5. クラスI抗不整脈剤の主な副作用 major side effects of class i antiarrhythmic drugs

English Journal

Arrhythmias and transient changes in cardiac function after topical administration of one drop of phenylephrine 10% in an adult cat undergoing conjunctival graft.

Franci P, Leece EA, McConnell JF.SourceDepartment of Veterinary Clinical Science, University of Padua, Legnaro Padua, Italy Department of Veterinary Medicine, University of Cambridge, Madingley Road, Cambridge, UK Department of Musculoskeletal Biology, Institute of Ageing and Chronic Disease and School of Veterinary Science, University of Liverpool, Leahurst Campus, Wirral, UK.
Veterinary anaesthesia and analgesia.2011 May;38(3):208-12. doi: 10.1111/j.1467-2995.2011.00607.x.
History? A 2-year-old, entire female, Somali cat weighing 3.8?kg was admitted for a conjunctival graft on the right eye, for treatment of an acute descemetocele. Medetomidine 4.2?μg?kg(-1) and methadone 0.2?mg?kg(-1) were administered by intramuscular injection as preanaesthetic medicat
PMID 21492386

Bidirectional ventricular tachycardia: Ping pong in the His-Purkinje system.

Baher AA, Uy M, Xie F, Garfinkel A, Qu Z, Weiss JN.SourceCardiovascular Research Laboratory, Department of Medicine (Cardiology), David Geffen School of Medicine at UCLA, Los Angeles, California.
Heart rhythm : the official journal of the Heart Rhythm Society.2011 Apr;8(4):599-605. Epub 2010 Nov 29.
PMID 21118730