Central Line and CVP Flashcards Preview

I&M for Anesthesia - Fall 2013 > Central Line and CVP > Flashcards

Flashcards in Central Line and CVP Deck (21):
0

Central venous pressure is anatomically defined as the blood pressure in the

Vena cava at the junction with the right atrium

1

CVP is not a reliable indicator of

Left ventricular performance
It is a reflection of right atrium pressure, which reflects changes in right ventricular end diastolic pressure

2

T or F. If left side preload decreases, CVP will decrease

False. Right side preload

3

Insertion sites for CVP

Internal jugular (left or right)
Subclavian
Femoral
Brachial

4

How does one identify between a vein and artery using ultrasound?

The artery will be the one that does not collapse when pressure is applied (obliteration)

5

What factors can affect the value of CVP?

Cardiac performance
Blood volume
Vascular tone
Increased intraabdominal or intrathoracic pressures
Vasopressor therapy

6

The A wave (atrial contraction) occurs right after

P wave on EKG

7

The A wave is increased by

Tricuspid stenosis
RVH
Pulm stenosis
Pulm HTN
Giant A waves cannon

8

The C wave is caused by the elevation of _________ into the right atrium during early ventricular/systolic contraction

Tricuspid valve

9

The C wave corresponds to what part of the EKG?

The end of QRS

10

Atrial relaxation and downward displacement of the tricuspid valve during ventricular systole is represented by

The X descent

11

What part of the EKG correlates to the X descent?

Before the T wave

12

Caused by pressure produced when the blood filling the right atrium hits against a closed tricuspid valve

The V wave

13

The V wave corresponds to what part of the EKG?

The end of the T wave

14

During tricuspid regurgitation, this wave will be very prominent

V

15

The Y descent is produced by blood flowing into

The right ventricle through an open tricuspid valve

16

The y descent correlates with what part on an EKG?

Occurs before the P wave (prior to atrial contraction)

17

Indications for CVP

Monitor preload, hypovolemia, shock, aspiration of air emboli, TPN, insertion of transcutaneous pacing leads, IV access in patients with poor peripheral veins, infusions of vasoactive meds

18

Contraindications to CVP

Tumors in the right atrium
Severe coagulopathy
Ipsilateral carotid endarterectomy

19

Complications of CVP placement

Pneumothorax, carotid artery puncture, he thorax from vascular puncture, air embolism, wire embolization, thrombosis, cardiac perforation, hematoma, cardiac tamponade, arrhythmias, hydrothorax, chylothorax, infection

20

What are normal CVP values... According to the notes?

10-12 mmHg