IHD

Question 1

define IHDS

Answer 1

group of disorders caused by imbalance between the myocardium’s oxygen demand and supply

Question 2

what are the causes of Ihd

Answer 2

1- partial or complete narrowing of the coronary arteries; ATHEROSCLEROSIS, vasospasm/ vasculitis or thrombosis
2- myocardium hypertrophy (complicating HTN)- increased o2 demand
3- low Po2- anemia/ lung disease

Question 3

how does Ihd present

Answer 3

1- clinically silent (<705 occlusion)
2- Angina pectoris
3- Myocardial Infarction
4- chronic IHD
5- Sudden cardiac death

Question 4

what are the risk factors of IHD

Answer 4

1- Modifiable
-Low physical activity
- high LDL diet
- smoking/ alcoholism
- Diabetes
- hypertension
- Obesity
- Stress
2- Non modifiable
-Genetics
- Age
- sex (more in men)

Question 5

which coronary arteries are most commonly occluded

Answer 5

Left anterior descending
Right coronary artery
Left circumflex artery

Question 6

whatre the diff types of angina

Answer 6

1- Stable angina- >70% occlusion
2- Unstable angina- rupture of plaque
3-prinzmetal angina - coronary vasospasm

Question 7

Stable angina Features

Answer 7

• crushing substernal pain that radiates to the left shoulder and jaw
  -On exertion
  -Lasts <20 mins
  -SOB
• Diaphoresis
  -ST depression (subendocardial ischemia)

Question 8

Unstable Angina features

Answer 8

-prolonged/ recurrent substernal pain at rest
- cand progress to Mi If not managed
- ST depression

Question 9

prinzmetal angina

Answer 9

intermittent chest pain
ST ELEVATION ( due to transmural ischemia)