Central Venous Pressure Monitoring Flashcards
1
Q
What is CVP
A
- Measure of pressure in right atrium which is determined by function of Rt) heart and pressure of venous blood in the vena cava
2
Q
What is a normal CVP reading
A
5-12mmHg
3
Q
Indications for CVP monitoring
A
- Fluid and drug administration
- Venous access for blood tests and monitoring CVP
- Lack of accessible peripheral veins
4
Q
Precaution for CVP monitoring
A
- Coagulopathy
- Thrombolytic/anticoagulant therapy
- Combative patients
- Those at increased risk of pneumothorax
5
Q
3 key sites of CVP monitoring
A
- Subclavian
- Internal jugular
- Femoral
6
Q
Factors affecting CVP
A
- Intrathoracic pressure
- Vascular tone
- Obstruction
7
Q
Complications of CVP
A
- Pneumothorax - from insertion
- Haemorrhage - from insertion
- Infection- local or systemic
- Air embolism - if CVC left open to air
- Disodgement - either in too far or extraavasation
8
Q
Causes of raised CVP
A
- Hypervolaemia
- Poor cardiac contractility
- Vasoconstriction
- Pulmonary hypertension
9
Q
Causes of low CVP
A
- Hypovolaemia
- Vasodilation
10
Q
What is zeroing
A
- Used to establish reference point and eliminate effects of atmospheric and hydrostatic pressure
11
Q
Draw a CVP and explain the waves
A
pp. 31
12
Q
How do you access CVC
A
- Sterile gloves and field
- Prime and attach lines using ANTT
- KVO fluids at all times
- Nothing smaller than 10mL syringe
