ST Depression

Question 1

What is ST Depression ?

Answer 1

STD is a result of myocardial ischaemia.

In myocardial ischaemia, STD accounts for just over half of presenting patients (T-wave inversion accounts for the other half).

• STD can be found in reciprocal changes to STEMIs.

Question 2

How to recognise STD?

Answer 2

STD at the J-point greater than 0.5mm in 2 or more continuous leads.

Question 3

What leads can STD be present in?

Answer 3

Varies according to where the ischaemia is occurring: REVIEW ALL LEADS.

Question 4

Signs and symptoms of STD?

Answer 4

• Chest pain
• Nausea
• Shock
• Shortness of breath

Question 5

Significance of STD?

Answer 5

There are typically 3 presentations of STD: Horizontal, downslopping and upscoping.