CARDIOLOGY Flashcards
differences between STEMI and NSTEMI
STEMI: ST elevation +elevated troponin. Complete occlusion of blood vessels resulting in necrosis of myocardium
NSTEMI: ST depression + elevated troponin, partial occlusion of blood vessels resulting in necrosis of myocardium
differences between stable and unstable angina
stable: exercise induced, no minimal ECG changes with no changes in troponin
unstable: often occurs while resting, sleeping or minimal physical activation. ST depression with no changes in troponin. Can lead to heart attack
symptoms of angina
chest heaviness, pressure, pain and discomfort.
chest symptoms may radiate to upper body, last <5 mins and received by rest or nitroglycerin
symptoms of ACS
same as angina but
lasting > 5 mins and not relieved by nitroglycerin
treatment for stable angina
chronic:
BB and/OR
NTG and/ OR
DPH ( long acting)
decreasing mortality:
anti platelet ( ASA or clopidogrel) statin
ACE-I or ARB
how many total dose of NG spray can u administer
total 3 doses
what condition does ACS compromise of
unstable angina
NSTEMI
STEMI
What is TIMI risk score ?
estimates mortality, recurrent MI or severe recurrent ischemia requiring urgent revascularization for patients with unstable angina and NSTEMI
high risk if TMI >/3
what medication to start post MI
A= ACE-I,
B- BETA BLOCKER
C- cholesterol - statin
D: DUAL ANTIPLALET
know treatment algorithms for UA/NSTEMI
SEE PIC
when would you choose fibrinolytic vs PCI
what is the absolute CI?
fibrinolytic: <1 hr presentation, when PCI is not an option, delay to invasive strategy
PCI: skilled PCI lab available, high risk STEMI, , late presentation >3 hrs, diagnosis in doubt
MOA of fibrinolytic?
CI?
altepase, tenecteplase
conversion of plasminogen to plasmin in the presence of of fibrin, resulting in fibrinolysis
any suspected hemorrhage or bleeding, known vascular lesion, or ischemic stroke within 3 months
know algorithm to STEMI
See pic
Which heparin should be used? how long should they be one this ?
UFH: STEMI patient receiving fibrinolytic.
LMWF ( enoxaparin has been shown to be superior to UFH in patients treated with tenecteplase
Heparins should be continued for a minimum of 48 hours ( or until PCI) and use can be extended in patients with high-risk features.
what is the MOA of UFH? AND AE?
potentiates antithrombin, inhibits factor Xa and IIa
AE: bleeding, HIT , osteoporosis
when should we initiate beta blocker ? what should the HR be?
BB in the first 24 hrs to all patient without contraindications,
Titrate to resting HR: 55-65 bpm
know duration of DAPT THERAPY
DAPT 1 year , if not at high risk of bleeding, continue DAPT for 3 years
if high risk after 1 year, SAPT ( ASA 81mg once daily or Clopidogrel 75 mg
when should be hold DAPT therapy for surgery
BMS: at least 1 month after PCI
DES: 3 months after PCI
switching between ticagrelor and prasugel?
prasugel to ticagrelor: no loading dose, ticagrelor 90 mg BID is recommended
Ticagrelor to prasugel: LD of 60 prasugel mg followed by 10 mg daily
switching from clopidogrel to ticagrelor or prasugel
clopidogrel to ticagrelor: LD ticagrelor of 180 mg followed by 90 mg BID
clopidogrel to prasugel: LD of 60mg followed by 10 mg regardless of timing of clopidogrel dose
when should u delay CABG surgery in patient taking ASA, clopidogrel , ticagrelor or prasugel?
ASA- continue
ticagrelor: 48-73 hrs (2-3 days) before CABG
clopidogrel: 48-73 hrs (2-3 days) before
prasugel: 5 dyas
patient with AF without high risk features who undergo elective PCI:
AGE < 65 AND CHAD2=0
ASA+ clopidogrel: at least 1 moth for BMS and 3 months for DES and up to 12 months
Age >/ 65 OR CHAD2>/1
OAC + clopidogrel ( 1 month for BMS and 3 months for DES)
AF + PCI FOR ACS or high risk elective PCI
AGE < 65 and CHAD2=0
ASA+ P2Y2 Inhibitor2 ( ticagrelor or prasugrel preferred over clopidogrel for ACS )- up to 12 months
AGE >/ 65 OR chads>/1
reduced OAC+ ASA+ Clopidogrel
ASA stop 1 day post PCI or anytime up to 6 months
followed by: clopidogrel + OAC up to 12 months
ACE-I and ARB AE
hypotension ( dizziness, headache), dry couch, hyperkalemia
ARB: similar to ACE but less dry cough and less angioedema