RACP EXAM CRAM Flashcards
What is the mechanism of action of dobutamine?
Beta 1-adrenoceptror agonist
What is the most common cause of myocarditis?
Enterovirus
Which drug is most effective in improving systolic function in CCF?
ACE inhibitor
How do beta blockers help in stable angina?
Reduce myocardial oxygen demand
What is the classic cause of an accelerated junctional rhythm?
Digoxin toxicity
What rate is a junctional escape rhythm?
40-60bpm
Oral morphine to IV/scut morphine?
3:1
Treatment of choice for invasive pulmonary aspergillus?
Voriconazole
Formula for A-a gradient at sea level
713 * FiO2 - 1.25*pCO2 - paO2
Tibial nerve innervates which ankle movement?
Inversion
Deep peroneal nerve innervates which ankle movement?
Eversion
Which 3 anti-hypertensives will not interfere with aldosterone:renin ratio?
Verapamil, hydralazine, prazosin
Addison’s disease is due to a deficiency in which enzyme?
21-hydroxylase
If a patient has ACTH-dependent Cushing’s disease, what is the best next test that will differentiate a pituitary tumour from an ectopic tumour?
High dose (8 mg) dexamethasone suppression test will suppress ACTH and cortisol with a pituitary, but NOT with an ectopic tumour
In adrenal insufficiency, what prophylaxis should be done during times of stress? What if they are not tolerating PO intake?
Double dose of glucocorticoid (or hydrocortisone IV 25mg TDS if not tolerating PO)
Puffy hands, anti-U1RNP positive, dsDNA negative. Diagnosis?
Mixed connective tissue disease
Antibody for limited scleroderma?
Anti-centromere
[anti-centromere = limited SSc and Pulm HTN]
[anti-topoisomerase/Scl-70 = Diffuse SSc and ILD]
Antibody for ILD in scleroderma?
Anti-topisomerase I aka Scl-70.
[anti-centromere = limited SSc and Pulm HTN]
[anti-topoisomerase/Scl-70 = Diffuse SSc and ILD]
Anti-centromere antibodies are associated with which 2 features of scleroderma?
Limited SSc. Pulmonary hypertension
[anti-centromere = limited SSc and Pulm HTN]
[anti-topoisomerase/Scl-70 = Diffuse SSc and ILD]
Antibody for pulmonary hypertension in scleroderma?
Anti-centromere
[anti-centromere = limited SSc and Pulm HTN]
[anti-topoisomerase/Scl-70 = Diffuse SSc and ILD]
Anti-topoisomerase (aka Scl-70) antibodies are associated with which 2 features of scleroderma?
Diffuse SSc + Interstitial lung disease
[anti-centromere = limited SSc and Pulm HTN]
[anti-topoisomerase/Scl-70 = Diffuse SSc and ILD]
Anti-RNA polymerase III antibodies are associated with which 2 features of scleroderma?
Diffuse SSc. Severe renal disease
[anti-centromere = limited SSc and Pulm HTN]
[anti-topoisomerase/Scl-70 = Diffuse SSc and ILD]
Which ANCA has a higher relapse rate?
c-ANCA / PR-3
Which ANCA has a lower relapse rate?
p-ANCA/ MPO
Which antibody is associated with primary Sjogren’s syndrome?
Anti-SSA (Ro60) - not Ro53
Anti-SSA (Ro60) is associated with which condition?
Primary Sjogren’s
Anti-Jo1 is associated with which condition?
Polymyositis