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5 Written questions

5 Matching questions

  1. mVo2
  2. Catecholamines
  3. Dobutamine (Dobutrex)
  4. low preload
  5. Class IC
  1. a Encainide, Flecainide, Rythmol /// Most potent sodium channel blocker /// little effect on repolarization /// increases PR and QRS duration
  2. b beta 1 effect with all doses which increases contractility /// Do NOT give for blood pressure /// decreases contractility /// used in patients with decreased CO and end stage heart disease /// it IS weight based /// low dose < 5, medium dose 5-20, high dose > 20
  3. c myocardium oxygen consumption
  4. d treat with fluids or peripheral vasoconstrictors
  5. e Produce sympathomimetic response (stimulate the heart rate and blood pressure) Naturally occuring = dopamine, epinephrine, norepinephrine, and phenylephrine/// synthetic = dobutamine and isoproterenol

5 Multiple choice questions

  1. Calcium channel blockers /// primarily in sinus, AV nodes and atrial tissue /// treatment for SVT /// Verapamil, and Cardizem /// they slow the heart rate and decrease irritability
  2. stimulate adrenergic receptors (norepinephrine, dopamine/// they can be alpha adrenergics, beta 1 adrenergics, beta 2 adrenergics, and dopaminergic
  3. Propofol (Diprivan) hypnotic used for induction and maintaince of anesthesia or sedation short half life typical dose is 5-50 mg/kg/min// the longer they are on it the longer it takes to wake them up// wean off of diprivan first before weaning off of the vent // doing sedation vacations 1 q shift helps decrease tolerance and nurse can perform neuro checks during this time
  4. Increase conduction/ heart rate / contractility/ stroke volume
  5. amount of blood left in the right ventricle at the end of diastole

5 True/False questions

  1. Phenylephrine (Neo-synephrinedosage is 10-100 mcg/min and has an alpha effect /// vasoconstricts/// used for hypertension, sepsis, and do NOT use if patient is hypovolemic

          

  2. Beta 2Peripheral arteriole vasodilation (involuntary muscles and skeletal // bronchodilation // decreases preload adn afterload // decreases SVR/BP, mVo2

          

  3. Low dose dopamine (Intropin) is an inotrope< 3 mcg/kh/min has a dopaminergic effect (vasodilates) and is used to improve perfusion of the kidneys

          

  4. ContractilityEfficiency and strength of contraction

          

  5. Phosphodiesterase inhibitorspositive inotropes, positive vasodilators, increases CO due to decreased afterload /// Amrinone (Inocor) and Milrinone (Primacor) decreases afterload