Clinical Medicine 1 : Chest Pain, SOB, Palpitations, Syncope, Edema (Selby GOAT) Flashcards
What is stable angina?
chest pain or pressure for at least 2 months precipitated by exertion or emotional stress and not worsening
What is unstable angina?
new onset angina with minimal exertion, angina at rest or angina that is worsening
may/may not have ST depression or T wave inversions with NORMAL cardiac enzymes
What is an NSTEMI?
ST segment depression and/or T wave inversions with
ABNORMAL cardiac enzymes
What is a STEMI?
ST segment elevation and ABNORMAL cardiac enzymes
(or a new LBBB or a posterior MI)
What features make up acute coronary syndrome?
Unstable angina
or NSTEMI
or STEMI
What are the modifiable risk factors for CAD?
HTN
HLD (Atherogenic: low HDL <40 mg/dL, high LDL, and high non-HDL)
DM
Overweight/Obese
Smoking
Inactivity
Unhealthy diet
Stress
What are non-modifiable risk factors for CAD?
Male sex
Age (M>45, F>55)
FMhx of premature CAD (F<65 M<55)
Ethnicity (AA, Hisp, SE Asian)
What are some non-traditional risk factors for CAD?
CKD
Proteinuria
Inflammatory States (HIV, RA, Psoriasis, etc)
metabolic syndrome
Elevated coronary calcium scores (CAC)
High sensitvity CRP (>2)
High apolipoportein B levels (>130)
High lipoprotein A (>50)
Elevated homocysteine
Premature menopause
A-fib
What is the classic presentation for ACS?
Chest pain radiating to jaw, neck, abd.
Dyspnea
N/V
Diaphoresis
Fatigue
***20% of AMI are painless (silent) and/or atypical symtoms, which is more common in women, the elderly, and diabetics.
20% of AMI are silent/atypical and commonly in which populations?
Elderly
Women
Diabetics
What are the three classic components of Angina Pectoris
(Diamond-Forrester Criteria of Chest Pain)
**MEMORIZE**
- Substernal chest pain
- Provoked by exertion/stress
- Relieved by rest and or NTG
Typical Angina has all three
Atypical has 2/3
Non-angina has 1/3
What does a resting ECG look for?
ST elevation/depression
T wave inversions
new LBBB
posterior MI
Q waves
etc.
What is a cardiac stress test used for?
What if it’s positive?
For patients with intermediate pretest probablilty of CAD
If it is a positive, pt’s should proceed with invasive coronary angiography
How is an exercise stress test done?
What drugs are used for a pharm stress test?
typically done with a treadmill or stationary bike
vasodilators (adenosine) to dilate coronary artery
Inotropes/Chronotropes (Dobutamine) to increase myocardial oxygen demand, HR, and contractilty
who cannot have a stress test?
Those with baseline ECG abnormalities
(pre-existing BBB, paced rhythm, WPW, etc)
or >1mm of ST depression
What is a stress echo used for?
looks for regional wall motion abnormalities or LV dilation
What is a stress myocardial perfusion imaging test used for?
AKA nuclear stress test
provides info on perfusion defects between rest and stress, cardiac viability, and LV systolic function
A Dobutamine stress echo can evaluate contractility of the heart to determine what features?
Normal contractility
Regional wall abnormalities such as hypokinesis, akinesis, or dyskinesis
What are cardiac biomarkers (labs) ?
Myoglobin (and CK isoforms)
rise first, gone by 24hrs
CK, CK-MB
detectable after 3hrs, peak 24hrs, dissapear in 3-4 days
Troponin I or T
detectable after 3hrs, last 5-10 or 5-14 days
What is the diagnostic criteria for a STEMI?
ST-elevation of greater than or equal to 2mm in continuous leads or a new LBBB
You cannot diagnose a STEMI in the setting of a known/old LBBB