Cardiology, Harrison Flashcards
Estimates risk of ischemic stroke in patients with non-rheumatic/non-valvular Afib
CHADS2 Score: 1) CHF 2) Htn 3) Age >75 4) DM 5) Previous stroke; Each corresponds to 1 point, except for previous stroke which corresponds to 2 points; A score >2 = oral anticoagulation advised
Estimates 10-year risk of coronary disease, cerebrovascular disease, peripheral vascular disease, and heart failure
Framingham Cardiovascular Risk: 1) Age 2) SBP 3) Total cholesterol 4) HDL 5) BP treatment 6) Smoking status 7) DM 8) Gender
Chest discomfort precipitated by emotion/exertion; rapidly resolves (within 5-10 mins) with resting/nitrates
Chronic stable angina
MCC of chronic stable angina
Atherosclerotic epicardial Hcoronary artery disease
Accelerates coronary atherosclerosis in both sexes at all ages
Smoking
Family history of coronary artery disease, significant ages within genders
Male less than 55; Female less than 65 (must be FIRST DEGREE relatives)
Chest pain of chronic stable angina lasts for
2-10 minutes
Atypical chest discomfort of angina is common in
1) Elderly >75 2) Women 3) Diabetics; may present with anginal equivalents
T/F Pain of chronic stable angina may radiate to the back/interscapular region
T
Chest pain of chronic stable angina RARELY localises where
Below umbilicus or above mandible
Angina that occurs at rest is referred to as
Unstable angina
Angina at night while the patient is recumbent
Angina decubitus
Symptoms of myocardial schema (MI) other than angina
Anginal equivalents: Dyspnea, nausea, fatigue, faintness, epigastric discomfort
MI without chest discomfort but detectable by continuous ECG (Holter monitoring) or during stress test
Silent ischemia
Mitral regurgitation is best appreciated with the patient in ___ position
Left lateral decubitus
T/F Localization of chest discomfort with a single fingertip on the chest makes angina unlikely
T
Unstable angina lasts for
10-20 minutes
Angina of acute MI lasts for
> 30 minutes
Angina that cannot be relieved by nitroglycerin
Acute MI
Late-peaking systolic murmur radiating to the carotid arteries
Aortic stenosis
Condition that can cause chest pain that closely mimics angina
Esophageal spasm
Simplest test for diagnosis and risk stratification of ischemic heart disease
Treadmill ECG (exercise stress test)
Used to diagnose ischemic heart disease when resting ECG is abnormal
Stress myocardial perfusion imaging: Thallium or sestamini is infused IV during exercise/pharmacologic stress testing; imaged after cessation of exercise and 4 hours later
Substances that may be used for pharmacologic stress testing
1) Dobutamine 2) Adenosine 3) Dipyridamole
Definitive test for assessing severity of CAD
Coronary arteriography
Target heart rate in exercise stress testing
85% of maximal heart rate for age and gender
Exercise stress testing is discontinued when
1) Chest discomfort 2) Severe shortness of breath 3) Dizziness 4) Severe fatigue 5) ST depression >0.2mV 6) Decrease in SBP by >10mmHg 7) Vtach
Baseline (0mV) in ECG
PR segment
Contraindications to stress testing
1) Rest angina within 48 hours 2) Unstable rhythm 3) Severe aortic stenosis 4) Acute myocarditis 5) Uncontrolled heart failure 6) Severe pulmonary htn 7) Active infective endocarditis
Vitamins that improve outcomes of patients with IHD
Vitamin C and E
Indications for coronary artery bypass surgery (CABG)
1) Significant left main CAD 2) 3-vessel CAD 3) 2-vessel CAD that includes LAD 4) Require revascularization but vessels unsuitable for PCI 5) Angina refractory to medical therapy 6) Medical therapy not tolerated 7) Diabetic with at least 2-vessel disease
Drugs that can be used to increase HDL and decrease TAG
1) Niacin (Vitamin B6) 2) Fibrates
T/F Unstable angina and NSTEMI have similar mechanisms, clinical presentations, and treatment strategies
T
Angina that occurs with a crescendo pattern
Unstable angina
Difference between NSTEMI and Unstable angina
NSTEMI: With evidence of myocardial necrosis (elevated cardiac markers
Age risk factors per gender
Male - 50 or older; Female - 60 or older
Clinical hallmark of unstable angina
Chest pain
Cardiac marker: First to elevate
Myoglobin
Myoglobin remains elevated up to
24 hours
CK-MB and Troponin elevate when
3-12 hours
CK-MB remains elevated until
1.5-3 days
Cardiac marker: Last to decline
Troponin (remains elevated for 1-2 weeks
Cardiac marker: Assist with determination of coronary risk
1) High sensitivity C-reactive protein (hsCRP) 2) Homocysteine
Cardiac marker: Aids in diagnosis, management, prognosis, and monitoring therapy of congestive heart failure (CHF)
B-type natriuretic peptide (BNP)
A marker of long-term cardiac risk produced by all nucleated cells, unaffected by acute phase reactants, body or muscle mass, and diet
Cystatin C
When is ambulation permitted in patients with UA and NSTEMI
1) No recurrence of schema 2) No elevation of cardiac biomarkers at 12-24 hours
Pain reliever used in UA/NSTEMI in patients whose symptoms are not relieved after 3 serial sublingual nitroglycerin tablets
Morphine sulfate
Antithrombin of choice for UA/NSTEMI; superior to unfractionated heparin in reducing recurrent cardiac events
Enoxaparin
Drugs shown to have benefit for long-term therapy in UA/NSTEMI patients
1) Beta blockers (helps decrease triggers for MI) 2) Statins and ACEIs (long-term plaque stabilisation 3) Antiplatelet (prevents/reduces severity of thrombosis if a plaque ruptures
Tearing or ripping knife-like chest pain radiating to the back between the shoulder blades
Aortic dissection
Grading of heart murmurs
1-very faint; 2-faint; 3-moderately loud; 4-loud with thrill; 5-stethoscope lightly pressed on skin; 6-stethoscope slightly above chest wall
Posterior calf pain on active dorsiflexion of foot against resistance
Homan’s sign
Rise or lack of fall of JVP with inspiration
Kussmaul’s sign
Venous pressure should fall by at least ___ mmHg with inspiration
3
Abdominojugular reflex
Pressure over the RUQ for 10 seconds results in a sustained rise of >3 cm in JVP for at least 15 seconds after release of hand
Uncontrolled htn with NO end-organ damage
Hypertensive urgency/hypertensive crisis
Uncontrolled htn with end-organ damage
Hypertensive emergency/malignant hypertension
Hypertensive urgency: Treatment
Oral drugs first; lower BP within 24 hours
Hypertensive emergency: Treatment
IV medications; lower BP by not >20-25% within the first hour
Drug class that should be avoided in patients with congestive heart failure
Beta blockers
Criteria for white coat hypertension
1) At least 3 clinic measurements >140/90 2) At least 2 non-clinic measurements less than 140/90 3) No target organ damage
Orthostatic hypotension is a fall in SBP by ___ mmHg or DBP by ___ mmHg from supine to upright within ___ minutes
> 20, >10, 3
Leading cause of death and disability in the developed world
Atherosclerosis
Enzyme inhibited by statins
HMG-CoA reductase