mx doses

Question 1

atropine

Answer 1

0.6-1 mg IV slowly.

Repeat up to total does 0.04 mg/kg (2-3 mg)

Question 2

epinephrine SQ/IM

Answer 2

1: 1000

0. 1-0.3 mL (0.1-0.3 mg) up to 1 g total

Question 3

epinephrine IV

Answer 3

1:10,000

1-3 mL (0.1-0.3 mg)

Question 4

• diazepam (valium) or midazolam (versed) for seizure in setting of contrast rxn.
• phenytoin (dilantin) if extended coverage needed

Answer 4

• diazepam (valium): 5 mg IV (or more, as appropriate)
• midazolam (versed): 0.5-1 mg IV
• phenytoin (dilantin): 15-18 mg/kg at 50 mg/min

Question 5

-phenytoin (dilantin) if extended coverage needed

Answer 5

15-18 mg/kg at 50 mg/min

Question 6

metformin before and after contrast enhanced CT

Answer 6

hold for 48 hr before

resume 48 hr after (if no CIN)

Question 7

preventing CIN with fluids

Answer 7

isotonic (100 mL/hr for 6-12 hr) bf contrast and 4-12 hr after

Question 8

ct cardiac-metoprolol (lopressor)

• dose
• CI
• antidotes/rx

Answer 8

-dose: 2.5-5.0 mg IV

CI:

• HR < 60, SBP <100
• decomp heart fx, 2nd/3rd˚ HB
• asthma, bronchospasm, severe COPD

antidotes/rx

• fluid
• atropine 0.5 mg IV (repeat up to 3mg)
• glucagon 50µg/kg IV loading –> con’t inf 1-15 mg/h

Question 9

CT cardiac: NG

• doses
• CI

Answer 9

Dose:

• 0.8-1.2 mg glycerol trinitrate
• 5 mg isosorbide

CI:

• sev AS
• HCOM
• PDE-5 inh w/i 48 hrs

Question 10

elbow MRI arthrogram

Answer 10

.05 cc gad + 10cc saline

Question 11

ct arthrogram contrast mixture-contrast:saline

Answer 11

1:1

Question 12

MR hip arthrogram mixture

Answer 12

• 0.1 - 0.2 mL gad per 20 mL iodinated contrast, saline, and/or anesthetic
• ie: dilute to 1/100 to 1/200 concentration
• not dilute enough: low signal fluid collection, obscure findings
• too dilute: saline arthrogram.

Question 13

treating pseudoanuerysm w/ thrombin

Answer 13

300-400 units thrombin (ie: 0.3-0.4 cc of 1000 u/cc thrombin) via 21G