Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
75 Cards in this Set
- Front
- Back
What is the treatment of choice for an actively wheezing pt?
|
B agonist
|
|
What is the treatment of choice for prevention of asthma?
|
Inhaled corticosteroids
|
|
Where does adenosine work?
|
purinergic receptors
|
|
How do BBlockers work? (3 ways)
|
1. direct CNS suppression
2. direct cardiac depression: blocks beta 1 receptors 3. prevent renin release from kidneys |
|
Why do bblockers prevent renin release from kidneys?
|
There are beta 1 receptors in kidneys
|
|
Why does esmolol have a short DOA?
|
metabolized by non specific esterases (RBC esterases) so short DOA
|
|
Nipride: arteria ldilator, venous dilator or both?
|
both
|
|
Nitroglycerin: arterial dilator, venous dilator or both?
|
venous
|
|
What is the major difference between labelotlol and esmolol?
|
esmolol has vasoconstrictive property, labetolol has vasodilator effect
|
|
How do direct agents work?
|
on smooth muscle of vascular wall
|
|
How is nipride metabolized?
|
by hgb
|
|
What is the cause of rebound HTN after stopping nipride infusion?
|
renin release
|
|
How do CCBs work to lower BP?
|
By blocking calcium entry into myocyt. Calcium is needed for cardiac muscle contraction, and CCBs block it from entering. Also has vasodilation effect.
|
|
What is step 1 of the 4 step asthma classification?
What is tx? |
Mild intermittent
prn inhaled B agonist (albuterol) |
|
What is step 2 on 4 step asthma classification scale? What is tx?
|
Mild persistant
inhaled steroid +/- singulair |
|
What is step 3 on asthma classfication scale? What is tx?
|
moderate persistant
medium dose inhaled steroids +/- LABA |
|
What is step 4 on asthma classification scale? What is tx?
|
high dose inhaled steroids, LABA, systemic steroids
|
|
Do you need to give stress dose of IV steroids to pt with daily inhaled steroids ?
|
No.
|
|
How do Class 1 antiarrythmic agents work? What kind of arrythmias are they best for?
|
Blocks Na channels
ventricular |
|
What drugs are in Class 2 for antiarrythmic agents?
|
BBlockers
|
|
How do BBlockers work?
Examples of drugs? |
decrease HR and contractility
metoproLOL, carvediLOL, esmoLOL, antenoLOL |
|
How do class 3 antiarrythmics work?
|
blocks K channels
|
|
Examples of Class 1 antiarrythmics?
|
lido, Pronestyl, norpace,
|
|
What drugs are Class 4 antarrythmics? How do they work?
|
CCBs. Work by decreasing amt of Ca in cell, which decreases contractility.
|
|
Which antiarrythmic class is best for atrial arrythmias?
|
CCBs (or BBs)
|
|
Which agents are drugs of choice for SVT?
|
CCB's (or BB). Adenosine is too, but wouldnt use in anesthesia setting
|
|
Which drugs are tx of choice for ventricular dysrythmias?
|
lido or amio
|
|
What is tx of choice for Toursades de Points VT?
|
magnesium
|
|
What is JNC6 "normal BP"?
|
<120/<80
|
|
What is considered "prehypertension"?
|
120-139/80-89
|
|
What is considered stage 1 HTN?
|
140-159/90-99
|
|
What is considered stage 2 HTN?
|
>160/>100
|
|
Hypertensive urgency is
A. lower within 24 hours or pt could have event-oral agents could be OK B. Lower within 1 hour |
A
|
|
Hypertensive emergency is:
A. must lower within 24 hours or pt could have event. Oral agents might be OK B. Needs lowered within 1 hour |
B
|
|
Which of the following are drugs of choice for HTN in pregnant women?
A. atenolol B. labetolol C. hydralazine D. nipride |
B (according to Nag)
C (according to texts) |
|
What is the MOA for ACE inhibitors?
|
prevents conversion of angiotenin 1 to angiotensin 2
|
|
What is the MOA for ARBs?
|
angiotensin 2 is made, but the receptor is blocked so cant bind
|
|
What is the MOA for DRIs?
|
angiotensinogen can'tbe made into angiotensin 1
|
|
What are the 3 MOA for beta blockers?
|
1. direct CNS depression'
2. direct cardiac depression by blocking beta 1 receptor 3. prevents renin release |
|
Which of the following agents are vasodilators?
A. esmolol B. labetolol |
B
|
|
What is the only BBlocker with vasodilating properties?
|
labetolol
|
|
Which of the following are vasoconstricting?
A. labetolol B. esmolol |
B
|
|
How is esmolol metabolized?
|
hydrolyzed by RBC esterases-very short duration of action
|
|
Why does nipride cause hypoxia?
|
inhibits cytochrome oxidase inside the cell
|
|
How is nipride metabolized?
|
by hemoglobin
|
|
What is the Tx for nipride toxicity/cyanide poisoning?
|
1. Na nitrite
2. Na thiosulfate 3. Methylene blue |
|
What is the cause of rebound HTN after d/c nipride?
|
renin release
|
|
What is the MOA of diuretics?
|
decreases preload and an additional unknown action
|
|
What does a BB with ISA activity mean?
|
intrinsic sympathomimetic activity.
Less efficacy, "weaker" bblockers |
|
What special consideration is given to clonidine?
|
lots of rebound HTN.
|
|
Treatment of choice for acute angina?
|
nitrates
|
|
What is the MOA for nitrates?
|
decreases O2 demand by preload reduction
|
|
What class of agents is best for variant or Prinzmetals angina?
|
CCB
|
|
What is the MOA for ASA?
|
inhibits plt aggregation and endothelial COX.
|
|
What is the MOA for CCBs?
|
reduced preload, reduced afterload and vasodilation ( increase coronary flow)
|
|
What is the MOA for statins?
|
reduce thrombogenicity and antiplaque
AKA HMG-Co-A reductase inhibitors |
|
What is the single biggest determinant of myocardial oxygen balance?
|
heart rate
|
|
Class 1 angina:
|
occurs with strenous activity but not normal activity
|
|
Class 2 angina:
|
slight limitation of ordinary activity
|
|
Class 3 angina:
|
marked limitation of ordinary activity
|
|
Class 4 angina:
|
pain present at rest or can't do any activity without angina
|
|
Which of the following agents is more of an arterial vasodilator?
A. nitroglycerin B.. Nipride C. hydralazine D. labetolol |
C
|
|
Which of the following agents is more of a venous vasodilator?
A. NTG B. NIP C. hydralazine D. labetolol |
A
|
|
Tx of choice for stable chronic angina?
|
BBlockers
|
|
Elective surgeries should be postponed how long for a pt with bare metal stents?
|
4-6 weeks
|
|
Elective surgeries should be postponed how long for pts with drug eluting stents?
|
12 months
|
|
Which of the following conditions represent the greatest anesthetic risk?
A. angina B. CAD C. CHF D. HTN |
C
|
|
Class 1 CHF:
|
can do normal physicl exercise without sx
|
|
Class 2 CHF:
|
slight limitation. sx with ordinary activity
|
|
Class 3 CHF:
|
marked limitation. sx with less than ordinary activity
|
|
Class 4 CHF:
|
symptoms at rest, cant carry out any activity
|
|
Why do PDE inhibitors ( milrinone) work?
|
blocks breakdown of cAMP
|
|
How does dig work?
|
blocks Na-K-ATPase pump. Since K and NA cant get back where they belong, Ca-Na pump takes over, which increase Ca inside cell. More ca=stronger contraction.
|
|
Is there a clear therapeutic range for dig?
|
No.
|
|
What does K level is inverse proportion to digitalis mean?
|
How well dig binds to Na-K-ATPase pump depends on serum K level. If K high, binds less, If K low, binds more.
|