Further ECG Flashcards
1
Q
Define a valsalva manoeuvre.
A
A forced expiration against a closed glottis
2
Q
How would you get a patient to perform a valsalva manoeuvre?
A
Lie them supine and ask them to blow into a 20ml syringe with enough force to push the plunger back.Despite not being able to achieve this, they will perform a valsalva manoeuvre
3
Q
How does the origin of the electrical activity differ when the QRS complex is broad as opposed to narrow?
A
Narrow: originates above the bundle of His
Broad: originates below the bundle of His
