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16 Cards in this Set
- Front
- Back
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Milrinone MOA |
phosphodiesterase inhibitor. Phosphodiesterase is an enzyme that breaks down cAMP. cAMP phosphoraltes many of the enzymes involved in contraction of the heart. It also vasodilates reducing afterload of the heart. |
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Hypocalcemia causes |
PTH resistance, hypomagnesemia, sepsis, hungry bone syndrome, refeeding syndrome, RTA 2 |
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How to start HCO3 gtt |
If HCO3 < 8, D5W with 150mEQ of HCO3 at 100 If HCO3 > 8, D5 1/2 NS with 75 meQ of HCO3 |
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Aortic Valve Area in aortic stenosis (mild/mod/severe) |
Normal: 3-4 cm squared Mild: >1.5 Moderate: 1-1.5 cm2 Severe: <1 cm2 |
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Blood supply of SA Node AV Node |
SA: usually RCA, but can be L cx AV: AV Nodal off RCA |
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Atropine in infranodal block |
Theoretically, the AV block can cause relfex tachycardia, and during periods of refactoriness of AV node , if impulse is transmitted it will be blocked and cause an increase delay in beats ***According to Dr. Fontaine he doesn't believe in this. If patient has infranodal block, hook patient up to Zol Pads and give atropine. If HR improves you know it's a nodal block, if HR doesnt improve or gets worse, you know it's infranodal |
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In setting of MI, severity of RBBB vs LBBB |
b/c of anatomy of the bundles, a new RBBB is indicative of proximal LAD lesion and prognosis is worse |
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Cannon A Wave |
Large "A" Component of jugular venous pressure because atria contracts against a contracting ventricle. (Seen in AV dissassociation, will see LARGE pulses in neck) |
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Incomplete bundle branch block |
QRS duratino between 110-120 ms |
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LBBB Criteria |
1) Absence of Q waves in 1 V5 V6 2) QRS duration > 120 ms 3) Broad R waves in V5 V6 In LBBB, depolarization comes from right bundle and goes left (Toward V5,V6, and lead 1) so you would expect positive deflections |
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HTN Emergency goal BP drop |
drop MAP 20% in first hour, then gradually drop over next 23 hours so an overall reduction of 25% in 24 hours |
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Mechanical Complications of STEMI |
Papillary Muscle Rupture --> Mitral Regurg VSD Free Wall Rupture |
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LAFB criteria |
1) LAD 2) In inferior leads, RS pattern: b/c of block, depolarization goes in posterior fasicle which is down and to right 3) In 1, AvL qR pattern because of same reason in 2 4) Wide QRS (80-110 ms) |
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sgarbosa criteria |
used to detect ACS in LBBB or V paced rhythm > 1mm in a concordant QRS w/T wave deflection or >5mm discordant QRS w/T wave deflection indicative of ACS |
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physiologic Q wave |
qS in V1 and V2 is a normal variant misplacement of leads |
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Pathologic Q wave |
Any Q wave in V2 and V3 >.02 seconds Q wave > .03 seconds in I II AvF, AvL, V4-V6 |
