CARDIOLOGY 2

Question 1

CHD operations What is the Glenn or Bidirectional cavopulmonary operation?

Answer 1

Connection (4-6mo)

– SVC to RPA

– Expected sats 75-85%

Question 2

CHD operations What is the Fontan or Total cavopulmonary operation?

Answer 2

Connection (2-4 years)

– IVC to RPA

– Expected sats > 90% (usually)

Question 3

SVT How do you know if an SVT is a re-entry type?

Answer 3

Short R-P Narrow Complex

Tachycardias (AV re-entry type)

• R to P distance is shorter than the P to

R distance

• Almost certainly has an A-V re-entry

mechanism

• Responds to adenosine

Question 4

SVT How do you know if a SVT is likely not to repond to adenosine/

Answer 4

Long R-P Narrow Complex Tachycardia

• R-P interval is longer

than P-R interval

• Not an atrioventricular

re-entry mechanism

• NOT likely to respond

favourably to adenosine