CYNN EXAMS

What do collimators do? And what is the federally mandated limited diameter of the intraoral dental x-ray beam? - Answer Collimators control the size and shape of the useful beam. It reduces the beam to reduce scatter radiation. It is a lead diaphragm placed in the path of the primary beam as it exits the tube housing at the port. They can be round or rectangular.

A 52-year-old man comes to the physician complaining of dizziness, headaches, and pruritus after showering. He has smoked half a pack of cigarettes daily for the past fifteen years and drinks alcohol socially. Physical examination shows a reddish facial complexion and mild splenomegaly - Answer Polycythemia Vera

Type II Diabetes - Answer *DEFINITION:* Non insulin dependent diabetes. Patients produce an inadequate amount of insulin. Most patients do not need insulin, but will need to monitor diet closely. *PRESENTATION:* -Usually begins later in life as result of poor diet. *TREATMENT:* -Administer O2 if patient exhibits signs or airway distress. -Glucose if indicated

A physician prescribed 50 milligrams of Demerol. The Demerol is supplied in 100 mg/mL. How many mL of Demerol should be given? - Answer 100:1 = 50:x or 100 mg = 50 mg Solve for x by dividing both sides by 100 so x stands alone on one side: x = 50/100 or 0.5 mL

Cholinergic drugs - Answer Used to work with parasympathetic nervous system and vagus nerve to speed up smooth muscle activity (promote intestinal motility and bladder motility) and to counteract nonpolarizing neuromuscular blockers; example prostigmine (Neostigmine)

The osmolarity of blood entering the glomerulus is which of the following? Answer B. 300 mOsm/L The portion of the tubular system that is most associated with reabsorption of calcium due to the effect of parathyroid hormone is which of the following? Answer D. Distal convoluted tubule

A gag clause considered illegal in contacts between physicians and managed care organizations - Answer C. prohibits the physician from discussing financial incentives given by the organization

How do blood vessels contribute to the inflammatory response? - Answer 1. Dilation and opening of capillary beds -Results in increased blood flow 2. Increased permeability - Protein rich fluid flows out into the tissues 3. Endothelial (blood vessel lining) alteration > increased expression of adhesion molecules > attract and stop leukocytes

The nurse recalls that which medication should be used with caution in patients with diabetes because the drug may depress the tachycardia associated with hypoglycemia and may adversely affect glucose metabolism? - Answer B. Metoprolol

A nurse is caring for a client with hypertension. The physician orders furosemide (lasix) 2 mg/kg to be given intravenously. The client weighs 24 kg. The medication comes in a single-use vial that contains 40 mg in 4 mL (10 mg/mL). How much will the nurse draw up for this client's dose? The formula is as follows: 24Kg X 2 mg = 48 mg total dose 48 mg / 10mg/mL = 4.8 mL amount to be drawn up