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1
Understanding Electrocardiography
Rhythm Variations PACs are sometimes difficult to detect because they conceal
themselves in T waves or masquerade as profound bradycardia when bigeminal
and not conducted. PACs That Hide in T Waves The PACs in Fig. 7-3 are hidden
...
2
Clinical Electrocardiography: A Textbook
If short and long RR alternate, we refer to this as bigeminal rhythm. On rare
occasions, the sequences of repetitive arrhythmia are due to trigeminal or
quadrigeminal rhythms (for instance, two or three normal QRS complexes
followed by a third ...
Antoni Bayés de Luna, 2012
I I VR VF VL II II III III parasystole (Figure 4.2), or when late junctional
extrasystoles are present (Figure 4.30). If these are bigeminal, they may originate
an evident alternans of the P wave. Different changes in the P wave morphology
due ○ to ...
Antoni Bayés de Luna, 2011
4
Bates' Guide to Physical Examination and History-Taking
Bigeminal Pulse This disorder of rhythm may mimic pulsus alternans. A
bigeminal pulse is caused by a normal beat alternating with a premature
contraction. The stroke volume of the premature beat is diminished in relation to
that of the normal ...
Lynn Bickley, Peter G. Szilagyi, 2012
A bigeminal pattern (bigeminy) exists when one normal beat is followed by one
ectopic beat in a repetitive pattern. Every other beat is an ectopic beat. Because
every other beat is a PVC, the cardiac output may be cut in half during the time
the ...
6
Handbook of Cardiac Anatomy, Physiology, and Devices
16.1.3.3 Bigeminal Pulse A bigeminal pulse is caused by occurrences of
premature contractions (usually ventricular) after every other heartbeat, resulting
in an alternation in the relative pulse strength. Bigeminal pulse can often be
confused ...
7
Mosby's Dictionary of Medicine, Nursing and Health ...
American surgeon, 1818-1890; Gk, lithos, stone; L, terere, to rub], a long-jawed
instrument, passed through the urethra, for crushing a calculus in the bladder.
bigeminal /bijem'inal/ [L, bis, twice, geminus, twin], pertaining to pairs, twins or
dual ...
Peter Harris, Sue Nagy, Nicholas Vardaxis, 2009
8
Ultrasound Diagnosis of Fetal Anomalies
In case of atrial bigeminal rhythm, certain isolated beats are transferred to the
ventricles and others are not. In second-degree AV block, 3 : 1 or 2 : 1 conduction
to the ventricles is possible. 80-100 bpm is found in sinus bradycardia; this may
be ...
Michael Entezami, Matthias Albig, 2011
9
Tachycardia: New Insights for the Healthcare Professional: ...
One method employed in an ASC is bigeminal avoidance. Bigeminy is a slightly
abnormal heart arrhythmia that presents as a normal sinus heartbeat with a
premature ventricular beat. Various algorithms analyze beat intervals to predict
that a ...
10
Clinical Methods in Cardiology
Bigeminal pulse: The bigeminal pulse is due to the bigeminal rhythm. Alternating
beats are strong and weak (Fig. 12.8). However, unlike pulsus alternans, these
beats do not occur regularly. This is commonly seen with ventricular bigeminy.
