Week 4

Question 1

What is systolic heart failure

Answer 1

ventricle fails to contract adequately to eject sufficient blood volume into the arterial system.

Causes: ischemia, infarction, cardiomyopathy (enlarged heart) or inflammation

Question 2

What is diastolic heart failure

Answer 2

Heart cannot completely relax in diastole, disrupting normal filling.

Causes: Reduced Ventricular compliance due to hypertrophy (enlargement) and impaired relaxation of muscle.

Question 3

What is Unstable Angina

Answer 3

Essentially ACS (Chest pain) without a troponin rise.

Question 4

What does the P wave of an ECG represent

Answer 4

P wave (Atrial Depolarisation) – Impulse from the SA node through the 2 atria, right to left.

Question 5

What does the QRS complex on an ECG represent

Answer 5

Ventricular depolarisation, impulse travelling through the purkinje fibres of the ventricle.

Question 6

What does the T wave on an ECG represent

Answer 6

Ventricular Repolarisation return of stimulated muscle to a resting state.

Question 7

What is the ST segment of an ECG

Answer 7

Time between the end of depolarisation and repolarisation of Ventricles. A raised/depressed ST Segment may be indication of Myocardial infarction/ischemia.