Valvular, Genetic, Inflammation Flashcards
Causes of mitral stenosis
Rheumatic fever (majority of the time) Congenital causes
Definition of mitral stenosis (size)
Orifice less than 2 square cm
What does severity of mitral stenosis depend on?
Trans-valvular pressure gradient
Trans-valvular flow rate
Treatment of mitral stenosis
Diuretics and restrict sodium intake
Anticoagulation
Is acute mitral regurgitation an emergency?
Yes
Most common valvular disease
Aortic stenosis
Treatment of aortic stenosis
Surgical
Aortic regurgitation causes
Aorta disease
Valve leaflet pathology
Is acute aortic regurgitation an emergency?
Yes
Treatment for aortic regurgitation
Surgical
Vasodilator therapy delays requirement of surgery
Conditions patients must meet before CABG
Adequate lung function Adequate mental function Adequate hepatic function Ascending aorta OK Distal coronary targets OK LVEF >20%
What vessels are used for a graft in CABG?
Reversed saphenous vein
Internal mammary vein
Radial arteries
What 2 valves are more commonly operated on in adults?
Aortic and mitral
What are the 3 most common valve conditions requiring surgery?
Senile tricuspid AS
Bicuspid AS
Degenerative MR
What sort of infection is rheumatic fever related to?
Streptococcal infections
What is the hallmark of pathology in rheumatic fever?
Pancarditis
Treatment of rheumatic fever
Aspirin and bed rest
Presentation of chronic rheumatic heart disease
Gradually progressive mitral valve disease and/or aortic valve disease
Commonest cause of endocarditis
Strep viridans
What sort of endocarditis does strep viridans lead to?
Subacute bacterial endocarditis
Second commonest cause of endocarditis
Staph aureus
What sort of endocarditis does staph aureus lead to?
Acute bacterial endocarditis
Is cure more likely with strep viridans or staph aureus endocarditis?
Strep viridans
What’s more likely to be cured with antibiotics alone, native valve or prosthetic valve enocarditis?
NVE. 90% chance vs 50%
How long are antibiotics given after op for endocarditis?
6 weeks IV antibiotics
Audibility of aortic stenosis
Murmur usually easily heard