Week 6 mix (ECG, Haemodynamics) Flashcards Preview

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Flashcards in Week 6 mix (ECG, Haemodynamics) Deck (13):
1

Define Resistance (haemodynamics)

Opposition or impedence to blood flow principally as a result of the force of friction between blood cells and proteins and blood vessel walls

2

Which patients would require ECG or cardiac monitoring?

Cardiac arrest, Arrhythmias, Chest pain, Heart failure, Collapse/syncope, Shock/hypotension, Palpitations, Breathing difficulty

3

What is the Action potential responsible for?

Depolarisation of the cardiac muscle

4

How is the Action potential created?

Ion exchange involving potassium & calcium

5

What are some examples of Invasive haemodynamic monitoring?

Systemic arterial pressure monitoring, Central venous pressure, Pulmonary artery pressure, Cardiac output (thermodilution)

6

Why do we invasively measure arterial blood pressure?

Continuous monitoring, sensitive and accurate assessment of effectiveness of treatment, allows repeated samples of blood and gases.

7

What is Central venous pressure?

The measure of the pressure of blood within the right side of the heart

8

What is normal cellular activity dependant on?

Oxygen, Nutrients, other chemicals, removal of waste products

9

What is haemodynamic monitoring?

The study of the movement and forces of blood within the cardiovascular system, using sophisticated equipment and/or special catheters

10

(ECG) QRS =

Ventricular depolarisation (

11

P wave =

Depolarisation to trigger atrial contraction

12

T wave =

Ventricular repolarisation (return of nerve to resting state)

13

What are the 6 steps to ECG rythym analysis?

Is there a pulse? Is there electrical activity? Wat is QRS rate? Is QRS wide/narrow? Is atrial activity present (p waves)? What is relationship between atrial and ventricle activity (p waves and QRS complex)?