Week 6: Cardiovascular Conditions Flashcards
What does the cardiovascular system consist of?
Heart, blood vessels and blood
What are the three main functions of the heart?
Transport, Protection, Regulation
Define myocardium
Muscle of the heart
Define ishaemia
Insufficent blood supply
Define infarction
Cell death due to ischaemia
Define atheroma
Fatty, calcified deposits
Define arteriosclerosis
Hardening of the arteries
Define atherosclerosis
Scaring and fatty, calcified deposits reduced blood flow and hardened arteries
What does ischaemia cause?
Angina
Define myocardial infarction
Damage
What is a STEMI?
An MI that shows elevation of the S-T segment on a heart trace
Define congestive heart disease
Due to disease the heart doesn’t pump properly, leads to mal-distribution of bodily fluids
Defie cardiac arrest
Heart stopped
What are some non cardiac causes of chest pain
- musculoskeletal
- oesophageal reflux
- PE
- pneumothorax
- hiatus hernia
- referred pain
- pleurisy and other infections
- hyperventilation syndrome
What are common causes of left side chest pain that are linked to the heart and vascular issues?
- heart attacks
- coronary artery disease
- coronary artery dissection
- pericarditis
- hypertrophic cardiomyopathy
- aortic dissection
- aortic aneurysm
- mitral valve prolapse
What are the 4 types of atherosclerosis?
- atherosclerosis
- sclerosis
- atheroma
- ischeamia
What are the predisposing factors of atherosclerosis?
- increasing age
- gender
- hypertension
- diabetes mellitus
- obesity
- excessive alcohol
- stress
- smoking
- diet
What are acute coronary syndromes?
Sudden ischaemia disorders of the heart, represents a continuum of a similar disease process
What does active coronary syndromes include?
- unstable angina
- INSTEMI
- STEMI
What does unstable angina, STEMI and INSTEMI, all have?
A sudden ischamia, cannot be differentiated in the first hours as all have the same initiating events
What are the initiating events of unstable angina, INSTEMI and STEMI?
- plaque rupture
- thrombus formation
- vasoconstriction
Define ischaemia
A lack of oxygen with ST depression or T inversion
Define infarct
Death of tissue which may or may not show in the Q wave
Define injury
Prolonged ischaemia with ST elevation
What is angina pectoris
Insufficent blood flow to the heart muscle from narrowing of coronary artery may cause angina = ischaemia chest pain due to a build up of waste products (lactic acid and CO2) causing cramp
What is angina pectoris (chest pain) the most common symptom of?
Coronary artery disease
What are the three types of angina?
- stable angina
- unstable angina
- variant angina
What is stable angina?
Angina that occurs in a regular pattern that is provoked by exertion or emotional stress