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40 Cards in this Set
- Front
- Back
Site of action
Side effect of hydrochlorothiazides (5) |
Works on distal tubule to inhibit resorption of Na+ and Cl-.
SE - hyperuricemia, hypercalcemia, hyperglycemia, hypokalemia, slight hyperlipidemia |
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Loop diuretics
SE (4) |
Inhibit the Na K 2Cl cotransporter.
SE - K+ wasting, metabolic alkalosis, HoTN, Ototoxicity. |
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Clonidine
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alpha 2 agonist
SE dry mouth, sedation, rebound HTN |
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Methyldopa
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alpha2 agonist
SE sedation, positive Coombs test |
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Hemamethonium
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NicAch rec antag (blocks reflex bradycardia caused by NE)
severe orthostatic HTN, blurred vision, sexual dysfx |
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Reserpine
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prevents DA into vesicles to become NE - depletes NE
sedation |
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Guanethidine
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decr NE concentrations
othrostatic and exercise HTN |
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Prasozin
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alpha 1 block.
1st dose orthostatic HTN |
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Hydralazine
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vasodilator - arterioles
lupus like syndrome Incr cGMP -> smooth muscle relaxation. incr K+ eflux and decr Ca influx reflex tach, |
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Minoxidil
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vasodilator
hirsuitism incr K+ eflux and decr Ca influx hypertrichosis, pericardial effusion, reflex tach |
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Trimethaphan
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NicAch rec blocker
used during surg to decr BP to minimize blood loss |
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SE of ACEi
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ACE cough, angioedema, hyperkalemia, fetal renal damage, taste funny, Rash, Incr Renin
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Losartan
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ARB
fetal renal tox, hyperkalemia |
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Ca channel blockers
vasc vs cardio |
Block voltage dependent L-type Ca++ channels of cardiac and smooth muscle.
vasc smooth muscle nifedipine>diltiazem>verapamil cardio verapamil>diltiazem>nifedipine. |
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Mondays Dz
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industrial nitro exposure.
Vasodilation during the work week. Loss of tolerance over the weekend leads to tach, dizzyness, and HA |
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Cardiac Glycoside effect
Effects, use Toxicity and contraindication |
Vagal response -
Positive inotropy, Incr PR, decr QT, scooping of ST segment, Twave inversion. Use - CHF (incr contractility), A-fib (decr conduction through AV node) SE - blurry yellow vision SE exacerbated by renal failure, hypokalemia, and quinidine (decr dig clearance, displaces dig from tiss binding sites) |
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Antidote cardiac glycosides
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Slowly normalize K+, lidocaine, cardiac pacer, anti-Dig Fab fragment.
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Class I A antiarrythmics
SE |
Quinidine, Amiodorone, Procainamide, Disopyramide
Incr AP duration incr ERP Incr QT interval used for both atrial and vent arrhythmias Cinchonism (thrombocytopenia, torsades from incr QT interval)- quinidine SLE like syndrome - procainide |
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Class I B
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Lidocaine, mexilitine, tocainide
decr AP duration Used in acute ventricular arrhythmias (esp post MI) and digitalis induced arrhythmias |
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Class I C
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flecainide, encainide, propafenone
No effect an AP duration used in Vtach that progress to VF and intractable SVT LAST RESORT in tachyarrhythmias |
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Class III antiarrhythmics
SE |
Solatol, Ibutilide, Bretylium, Amiodorone
Used when other antiarrhythmics fail K+ channel blockers Incr AP duration Incr ERP Incr QT interval SE - ibutilide + solatol Torsades, bretylium - HoTN, new arrhythmias Amiodorone: pulm fibrosis, hepatotoxicity, hypo/hyperthrydoid |
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Type IV antiarrhythmics
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Ca channel blockers
Verapamil and diltiazem Used in prevention of Nodal Arrhythmias (SVT) primarily nodal cells effected. Decr Conduction velocity Incr ERP Incr PR interval |
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Adenosine
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good for abolishing and diagnosing AV nodal arrhythmias
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K+
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depresses ectopic pacemakers esp in Dig tox
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Embryo
Smooth parts of ventricles and atria Trabeculated parts of ventricles and atria |
Smooth parts of ventricles derive from the bulbis cortis while the trabeculated parts arise from the primitive ventricle.
Smooth part of Atria come from sinus venosus while the trabeculated part comes from the primitive ventricle |
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Epinephrine reversal
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after giving phentolamine (alpha blockade) BLOOD pressure drops when Epi is given. This happens because epi now preferentially binds beta 2 receptors which act to vasodilate the vasculature.
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Findings In ASD
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prominent RV cardiac impulse
mid systolic ejection murmur in the pulmonic area Fixed split S2 |
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ACE inhibitor electrolyte imbalances
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Hyperkalemia especially in renally deficient pts.
Mild hyponatremia Neutropenia, anaphylaxis, angioedema etc. |
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Major criteria for dx CHF
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Paroxysmal Nocturnal Dyspnea
Neck Vein Distention Rales cardiomegaly S3 gallop Incr Venous Pres Pos hepatojugular reflex use ACEi |
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Arterial vs Venous Thrombous vs post mortem
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Arterial: alternating layers of dark gray platelets and lighter areas of fibrin. lines of zahn,
venous: dark red due to higher RBC content, little to no lines of Zahn. Post mortem: not true thrombi bc no attachment to vessel wall. 2 layered - current jelly RBC rich lower layer, chicken fat cell poor upper layer |
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Pulmonary embolus
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pulmonary infarction, hemorrhagic pulm infaction results. Characteristically wedge shaped.
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Paradoxical emboli
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Due to patent foramen ovale or ASD
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Treatment of choice for HACEK endocarditis
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cephtriaxone
|
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Treatment of choice for HTN in APCKD
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ACEi
|
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beta 1 selective antagonist
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Acebutolol
Betaxolol Esmolol Atenolol Metoprolol |
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beta blockers with intrinsic sympathomimetic activity
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don't use with angina
Acebutolol and Pindolol |
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Riluozole
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Acts on nervous system - extends survival of ALS pts
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Baclofen
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GABA-B agonist
tx for spascticity in ALS |
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Tizanidine
|
alpha 2 agonist in CNS
good for spasticity in ALS |
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Anecdote for organosphosphates poisoning.
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Organophosphates inhibit anticholinesterase
PRALIDOXIME binds to the organosphosphate reactivating the AchE |