What is the MOA of Colchicine and how does it relate to the management of pericarditis?(Sigs Case 6.2a)
used as a theoretical anti-inflamm. agent; inhibits IL-1 from cascading, interferes w/ NFK-B; binds to microtubular tubulin in neutrophils-> inhibits mitosis
Oops!
Check
Okay!
Check
15
Explain how atropine alters conduction. (SIGS 6.1b)
Explain the effects of electrolyte imbalance on cardiac conduction and the impact erythromycin would have. (SIGS 6.1a)
alter depol/ pol/ repol; macrolide antibiotic w/ AE prolonged QT intv. d/t blockage of K+ channels--> delays phase 3 repolariz.--> more intracellular K+--> EADs
Oops!
Check
Okay!
Check
baam
Lose 15 points!
Oops!
seesaw
Swap points!
Okay!
fairy
Take points!
5
10
15
20
25
thief
Give points!
5
10
15
20
25
15
Explain the mechanism of action of amiodarone and the rationale for its use in dysrhythmias. (SIGS 6.2b)
Class III anti-arryth; MOA: blocks VG K+ channels --> inhibit Phase 3 repol--> prolong cardiac action potential & refractoriness--> decr. SA node firing rate
Oops!
Check
Okay!
Check
15
Contrast normal systolic and diastolic function in a healthy heart with the systolic and diastolic function of HCM.(Sigs Case 6.3b)
may have average systolic funct. but poor diastolic funct.; diastolic dysf. will have preserved EF; systolic dysf will have reduced EF
Oops!
Check
Okay!
Check
15
Describe integrative approaches to atrial fibrillation. (SIGS 6.1b)
Med. diet, stress reduction, no alcohol or caffeine, diet high in magnesium, fish oil, CoQ10
Oops!
Check
Okay!
Check
15
Describe the role of INR monitoring in anticoagulation therapy and explain the need for bridge therapy with warfarin. (SIGS 6.1a)
monitor coagulability (maintain optimal level- not too low or too high); Bridge therapy for warfarin due to taking several days to achieve therapeutic effects
Oops!
Check
Okay!
Check
lifesaver
Give 10 points!
Oops!
seesaw
Swap points!
Okay!
rocket
Go to first place!
Okay!
banana
Go to last place!
Oops!
thief
Give points!
5
10
15
20
25
rocket
Go to first place!
Okay!
fairy
Take points!
5
10
15
20
25
thief
Give points!
5
10
15
20
25
15
Describe the mechanism(s) of action of diltiazem and its effect on cardiac conductivity (SIGS 6.1a)
MOA: inhibits inflow Ca2+ ions into cardiac smooth muscle (SM) during depolarization; Decr. intracellular Ca2+ --> incr. SM relaxation/vasodilation--> decr. BP
Oops!
Check
Okay!
Check
15
Describe the pathogenesis of coxsackievirus type B and how it relates to viral myocarditis. (Sigs Case 6.2a)
GI tract (stable at low gI pH)โinfects mucosal epithelial cellsโviremiaโinfects + lyse heart/pleural surfaces
Oops!
Check
Okay!
Check
15
Describe the alterations in vascular reactivity that result from endothelial damage.โฏ(SIGS 6.3a)
damage to endothelium--> dysfunction (inability to react to vasodilation)--> structural remodeling--> alters function