EKG

Question 1

CI for adenosine

Answer 1

Transplant
Bronchospasm
LM or 3v disease

Question 2

Types of AVRT

Orthodromic
Antidromic

How do they conduct

Answer 2

Down AV and up accessory

Down AP and up AV

1 more common than 2 in WPW

Question 3

Concealed conduction

Answer 3

Upright p waves with prolonged PR

Mechanism - conduct down very slow pathway, usually PVCs exposed dual AV node physiology

Question 4

RV pacing in lead I and V1

Answer 4

Positive

Negative

Question 5

Hypercalcemia on ECG

Answer 5

Short QT

Prominent U waves

Question 6

Hypocalcemia on ECG

Answer 6

Long isoelectric ST segment
Long QT but normal T wave duration

can be seen in LQT3 too

Question 7

Features of VT

Answer 7

VA dissociation
AVR + suggests VT
Negative precordial concordance always VT
Positive precordial concordance typically VT

Question 8

Fascicular VT

Answer 8

Exercise induced
Can be narrow complex
RBBB, LAFB
Sensitive to verapamil, not adenosine

Question 9

Outflow tract VT on ecg

Answer 9

Exercise induced
Inferior axis

Breaks with adenosine

Question 10

Mechanism of VT in CPVT

Answer 10

Delayed afterdepolarization

Question 11

CPVT indications for ICD

Answer 11

Almost never

Question 12

LQTS inheritance

Answer 12

AD

Question 13

LQTS 1

Gene / receptor
Provoking factor

Answer 13

KCNQ1 loss of function
iKs channel
Swimming or exercise

Question 14

LQTS 2

Gene
Provoking factor

Answer 14

KCNH2
iKr loss of function
Auditory or postpartum

Question 15

LQTS3

Gene
Provoking factor

Answer 15

SCN5A gain of function
Leaking sodium channels
Sleeping

Question 16

Treatment for CPVT or LQTS

Answer 16

Nadolol

Question 17

Treatment for Brugada

Answer 17

ICD

Quinidine