- Wolff-Parkinson-White (WPW) Syndrome was
first reported in 1930.
- Electrically active muscle fibers
bridge the atria and ventricles - and cause
pre-excitation of the ventricles.
- This accessory pathway is able to
conduct faster than the AV node.
- WPW is a reentry mechanism with an
- Can be difficult to diagnose in
some children because of the higher normal sinus
rates and rapid AV node conduction.
- EKG characteristics are seen only after a
rhythm conversion from PSVT to NSR; see a representative
- PR interval is shorter
- the upstroke of the QRS wave is
slurred; this is known as a delta wave.
- 12 lead is essential as delta wave
may not show up in all leads.
- When PSVT is caused by WPW, the long term
medical therapy is a beta blocker.
- The first drug of choice is
WPW can be diagnosed with a
12 lead EKG while the patient is in PSVT rhythm.
TRUE or FALSE
Learn more about WPW on the Web. Click
here (Richard P. Abben, M.D. Cardiovascular Institute of the