Antianginal agents Flashcards
What is a common symptom of CAD
Angina pectoris
If a patient has chest pain that radiates to the neck, what symptoms will they have
choking
If a patient has ulnar distribution, where is their angina most likely radiating to
left shoulder / arm
What symptoms will a patient present with that has unstable angina or an acute MI
New onset
increase in intensity / frequency
increase in duration
occurs at rest
What are the types of angina
effort angina
vasospastic angina
unstable angina
What is the most common form of angina
effort / stable
How will a patient with stable angina present
short lasting
heavy
burning
squeezing in chest
relieved at rest
What is the cause of stable angina
inadequate blood flow in the presence of CAD
How do you best treat effort angina
nitrates or rest
What are other names for vasospastic angina
prinzmetal
variant
What are the causes of vasospastic angina
coronary artery spasm causing decreased blood flow to the heart muscle
*uncommon pattern, episodic
What is the treatment for vasospastic angina
coronary vasodilators
-nitrates
-Ca2+ blockers
Why is ACS an emergency
from a rupture of atherosclerotic plaque and partial / complete thrombosis of coronary artery
What happens if ACS isn’t treated
necrosis can occur leading to an MI
Necrosis in the heart leads to an increase in which biomarkers
troponins
creatinine kinase
How do you determine cardiac oxygen consumption
Wall stress/tension (Volume, pressure, thickness)
Heart rate
contractility
What occurs in the heart when preload is changed
the ventricular stroke volume will chance
force of contraction will change
What factors increase preload
Increased atrial contractility
Increase ventricular compliance
Decrease HR
Increased aortic pressure
Increased central venous pressure
-Decrease venous compliance
- Increase thoracic venous blood volume
What is the most important factor affecting myocardial oxygen demand
Heart rate
What is contractility influenced by in the heart
calcium
What strategies can be used for angina relief
beta blocker
calcium channel blocker
organic nitrates
Na+ blockers
Interventional (IR / Cath lab / CABG)