Tachyarhythmeas Flashcards
Approach to ECG tachy- dysrhythmias?
1) is the QRS Complex narrow or wide
2) are the QRS Complexes regular or irregular
3) are there P waves or atrial flutter waves.
What are the differentials of narrow regular tachycardias ?
1) sinus tachicardia
2) supraventricular tachycardia
3) atrial flutter usually with 2:1 conduction
All type of SVTs can be clumped together when it comes to treatment decision making. Why?
They all have more or less similar etiologies and treatment.
P waves in SVT?
They are usually hidden or they may come right after the QRS Complex.
In A fib the sawtooth pattern should be carefully looked for in all the leads: why?
It may only be visible in 1 or 2 leads
What is the ventricular rate that should prompt query for atrial flutter?
A ventricular rate of 150 +/-20. Should alert the physician to carefully look for atrial flutter in any of the ECG leads.
What is the maximum heart rate a person can develop in sinus tachicardia?
It is always 220-age.
Retrograde P waves at the end of QRS Complex are seen in ?
Certain type of SVTs
In atrial flutter inverted P waves are commonly seen in
Inferior leads 2 consecutive P waves with one upright and the other inverted
What are the types of narrow complex tachicardias?
Atrial fibrillation, Atrial flutter with variable conduction, and multifocal atrial tachycardia.
Multifocal atrial tachycardia is commonly seen in what type of patients?
Patients with pulmonary diseases such as COPD
What is the treatment of multifocal atrial tachycardia?
Never Shock the patients and always treat the underlying cause.
What is the ECG characteristic of multifocal atrial tachycardia?
The key feature is multiple P waves present irregularly. There will be at least Greater than or equal to 3 different morphologies for the P wave
