Invasive Diagnostic Techniques

Question 0

Four disadvantages of using multiple side hole coronary guiding catheters.

Answer 0

1. Decreased contrast opacification of target vessel
2. Decreased backup support
3. Decreased coronary pressure monitoring.
4. Possible kinking of catheter at a side hole

Question 1

Interventional guiding catheters and large side holes are sometimes used in order to

Answer 1

Prevent occlusion of the coronary ostium and resulting in ischemia.

Question 2

The chief disadvantage of multiple side holes in flood catheters is that they

Answer 2

Tend to clot unless flushed frequently.

Question 3

Which type of plastic has the least memory and torque control, so soft, used for balloon floatations caths?

Answer 3

Poly vinyl chloride (PVC)

Question 4

Which type of catheter plastics have the greatest strength, stiffness and torque control?

Answer 4

Nylon and Teflon (PTFE)

Question 5

Teflon (PTFE) is often used in the construction of sheaths and dilators. One danger with Teflon is that it:

Answer 5

Has hard, sharp tips.

Question 6

Polyurethane (PU) caths should be used with a —– guide wire.

Answer 6

Teflon coated

Question 7

Which caths do not have braided steel laminated within the plastic?

Answer 7

Swan-Ganz and Foley

Question 8

What type of “Single Use Devices” may be resterilized by 3rd party reprocessor companies and then reused in other patients?

Answer 8

Diagnostic EP electrodes

Question 9

If a 1 mm ID cath will transmit contrast at a rate of 1 ml/sec at 500 PSI, how much will a 2 mm ID cath transmit at the same pressure according to Poiseuille?

Answer 9

16 ml/sec

Question 10

Femoral pigtail caths for LV angiography are usually —- cm long.

Answer 10

110

Question 11

How is the curve of Judkins Right coronary caths measured?

Answer 11

From primary to secondary curves

Question 12

What is the normal left Judkins femoral coronary diagnostic cath for an average adult?

Answer 12

JL4

Question 13

In sizing catheter outside diameter, 1 French size is equal to:

Answer 13

.33 mm

Question 14

What French size is a catheter with an outer diameter of 2.66 mm?

Answer 14

8 F

Question 15

The outside diameter of a 5.5 Fr cath is:

Answer 15

1.83 mm

Question 16

The TIP inner diameter on a standard diagnostic coronary cath is:

Answer 16

.038 inch

Question 17

Two disadvantages of using guiding catheters, as compared to long sheaths in vascular interventions include:

Answer 17

1. Larger arteriotimy required for guiders (use standard introducer sheath)
2. No hemostatic side valve in guiders (require tuohy-borst adapter)

Question 18

When using a 5 F selective catheter through a 90 cm 5 F sheath in vascular procedures:

Answer 18

It will not be possible to flush fluids through the sheath- too tight

Question 19

In a quadrupled-lumen Swan-Ganz thermodilution catheter where is the proximal injection port located?

Answer 19

30 cm from the tip

Question 20

Which type of catheter is necessary for optimal wedge pressures?

Answer 20

End-hole only

Question 21

Your bilateral heart cath patient has a LBBB on the ECG. Which type of catheter should you insert first?

Answer 21

Swan-Ganz pacing and wedge catheter in RFV

Question 22

Which catheter would be best to catheterize the right heart to obtain hemodynamic measurements?

Answer 22

Balloon Swan-Ganz

Question 23

Which flow directed, ballon tipped, pediatric flood angiographic cath can measure wedge pressures?

Answer 23

Berman