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Question 1

List the indications for CVC

Answer 1

1) Hemodynamics monitor
2) Vasopressors
3) Caustic medications

Question 2

What are the 3 peaks in an ICP pressure waveform?

What is abnormal?

Answer 2

P1 - Percussion wave

P2 - Tidal wave

P3 - Dicrotic wave

Abnormal is if P2 is > P1 (gives you the finger)

Question 3

What is the min and max rates of the alaris pump?

Answer 3

0.1 ml/hr to 999 ml/hr

Question 4

What is normal and pathological ICP?

Answer 4

Normal is less than 15

Pathological is greater than 20

Question 5

What are complications of a CVC?

Answer 5

Air emboli

Infections

Thrombosis

Catheter tip fracture from introducer needle

Incorrect positions

Phlebitis

Pneumothorax

Question 6

Where is an ICP transducer leveled?

Answer 6

Tragus of the ear

Question 7

Analyze a central venous pressure (CVP) waveform and define the relevant characteristics.

Answer 7

a wave - right atrial contraction

c wave - tricuspid valve bulging into right atrium during right ventricular contraction

x descent - atrial relaxation

v wave - right atrial filling

y descent - tricuspid valve opening and right atrial emptying as right ventricle fills

Question 8

What are the common causes of overdampening or underdampening?

Answer 8

Overdamping Common Causes

1) Air bubbles in line
2) Clot in catheter
3) Pressure bag not inflated
4) Loose connection
5) Arterial spasm

Underdampening Common Causes

1) Stiff or not compliant tubing

Question 9

What are the contraindications of CVC?

Answer 9

1) Acute cellulitis
2) Thrombotic Veins