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29 Cards in this Set
- Front
- Back
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What is the primary goal of PACU care?
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relief of surgical pain with minimal side effects
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What is the most common cause of airway obstuction?
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tongue falls back
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What is the first action after recognition of a laryngeal spasm?
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Positive pressure ventilation
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What is the most common cause of hypoxia in the post-operative period?
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atelectasis
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What is the most common cause of hypotension post-op?
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hypovolemia
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What is the most common complication post-op?
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N/V
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In the same day surgery setting, what is the #1 complication?
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PONV
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Which safety zone is restricted from non MR personnel especially the general public?
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Zone 3
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How many tesla is a typical scanner?
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1.5-3
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Where is the force the greatest?
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at the center of the scanner, the area of maximal force is about the size of a basketball
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How many gauss = 1 tesla?
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10,000
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What is a contraindication to MRI scanning?
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pacemakers
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Which law states when any electrical conductor moves at right angles to a magnetic field a small induced voltage results?
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Faraday's Law
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What law states this voltage or current results in the generation of a small additional magnetic field which acts to oppose the primary field?
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Lenz's Law
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When a quench occurs, does the magnetic field drop immediately?
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no
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What one piece of equipment is very valuable in MRI?
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capnography- b/c you can not usually see patient or airway
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Translational force attracts?
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ferrous objects to the center of the magnetic field
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Rotational force relates to?
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the North-South orientation of the scanner's magnetic field- ferrous objects will attempt to align their axes with this orientation
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The magnetic field is always....?
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on!
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T or F. As the distance to the bore decreases, the force of the field increases exponentially?
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True
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If a patient has an implanted device they may feel what as they enter and exit the bore?
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a small "tug" or "tickly" in that area of their body
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What are possible incidents that may occur to the patient during a MRI?
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Thermal Injuries
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How can you add thermal insulation to the patient to prevent injuries?
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by adding air or space between the patient and potential electrical conductors
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What two gases are MR scanners cooled with?
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Helium and nitrogen
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How long does a quench take?
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5-15 seconds
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What could happen to occupants in the room if the gases don't escape?
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asphyxiation and frost bite
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From Faraday's Law, blood in the major vessels can act as?
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a conductor (especially the aortic arch)
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Name 3 complications of insertion of a central line?
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1. Pneumothorax
2. Bleeding 3. Infection |
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Name some contraindications to central catheter insertion?
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1. Morbid Obesity
2. Infection at site 3. Uncooperative patient 4. Distortion of landmarks for any reason 5. Unable to tolerate trendelenburg position |
