What is Ventriculophasic sinus arrhythmia?
Ventriculophasic sinus arrhythmia describes a phenome- non. in patients with heart block in which phasic varia- tions in sinus rate occur in relation to the QRS complex. 1–3 Typically, the pp intervals encompassing a QRS complex are shorter than those without an intervening QRS complex.
What is Isorhythmic AV dissociation?
Isorhythmic AV Dissociation: A synchronized dissociation, while the atria and ventricles are beating independently of each other, they beat at the same rate. Thus, appearing as an association between the two chambers. This is often seen in junctional rhythms and might require a longer ECG strip for measurement.
How do you read an ECG strip?
Heart rate can be easily calculated from the ECG strip: When the rhythm is regular, the heart rate is 300 divided by the number of large squares between the QRS complexes. For example, if there are 4 large squares between regular QRS complexes, the heart rate is 75 (300/4=75).
What is the difference between normal sinus rhythm and sinus rhythm?
Sinus rhythm refers to the pace of your heartbeat that’s set by the sinus node, your body’s natural pacemaker. A normal sinus rhythm means your heart rate is within a normal range.
How do you know if you have AV dissociation?
A 12-lead ECG is required for diagnosis. The characteristic features of AV dissociation are: Dissociated P Waves: These appear as “P waves marching through the QRS complex.” PR intervals might appear getting progressively shorter.
What is ventriculophasic sinus arrhythmia?
Ventriculophasic sinus arrhythmia is a particular phenomenon commonly observed in patients with complete atrioventricular (AV) block. Typically, the PP intervals which contain a QRS complex are shorter than the PP intervals which do not contain it.
What is an irregular sinus rhythm?
It is defined as an irregularity in the rate of normal sinus rhythm. Its main characteristic on the EKG is a variation in the P-P intervals greater than 0.12 s with a normal P wave morphology 1 2.
What are the different types of sinus arrhythmia?
Types of Sinus Arrhythmia 1 Respiratory sinus arrhythmia. 2 Nonrespiratory sinus arrhythmia. 3 Ventriculophasic sinus arrhythmia.
What are the differential diagnoses of sinus arrhythmia?
Differential diagnosis for sinus arrhythmia would include premature sinus or atrial complexes, sick sinus syndrome(sinoatrial block or sinus pauses), atrial fibrillation, or complete AV block 1 2 3. References 1. Surawicz B, Knilans TK.