03a: PCI and EKG Flashcards
Cardiac cath may be beneficial in Angina Class I/II patients under which circumstances?
- Intolerant to anti-angina meds
2. Occupation high risk (ex: pilot)
List the general categories of diseases in which diagnostic cardiac catheterization is indicated.
- Coronary a disease
- Valvular disease
- Cardiomyopathy
- Congenital disease
List the complications/risks of cardiac cath related to contrast agents.
- Anaphylaxis
2. Nephrotoxicity
T/F: Death, MI, stroke are all risks of cardiac cath procedure.
True
The limitation of balloon angioplasty is:
high rate of restenosis
Exposed (bare-metal) stent struts are a nidus for (X) until (Y) of the stent occurs. For this reason, patients are treated (Z) therapy for about a month after procedure.
X = clot formation Y = endothelialization Z = antiplatelet
The main late complication of bare-metal stents is:
In-stent stenosis (due to SM hyperplasia)
Drug-eluding stents are embedded with paclitaxel. What does this drug do?
Chemotherapy agent that interferes with MT function (reduces SM hyperplasia)
Drug-eluding stents are embedded with sirolimus. What does this drug do?
Immunosuppressant (reduces SM hyperplasia)
Main limitation of drug-eluding stents:
Time to endothelialization is prolonged (1 year instead of 1 month); extends the time during which the stent is prone
to thrombosis
In which patients has CABG been proven more efficacious than PCI?
- Left main stenosis over 50%
- 3-vessel disease (RCA, LAD, LCX)
- 2-vessel disease (LAD and another) with reduced EF
- Diabetes with multi-vessel disease
What are the risk factors associated with acute renal failure during cardiac cath procedure?
- Dehydration
- Hypotension
- Renal insufficiency
- High contrast dose
- Diabetes Mellitus
T/F: Balloon angioplasty has higher rates of repeat revascularization than CABG.
True
What are the criteria for a Q wave to be pathological?
- Width greater than 1 small box
- Height greater than 25% of QRS
- Seen in 2 contiguous leads
Which are the Limb Leads?
I, II, III