CCI flashcards

Question 0

A patient diagnosed with lung cancer is undergoing a thoracotomy. Interpret the following intraoperative arterial blood gas results: pH=7.30; PaCO2=55 mmHg; HCO3=24 mEq/L.

A) metabolic acidosis
B) within normal limits
C) compensated respiratory alkalosis
D) uncompensated respiratory acidosis

Answer 0

D) uncompensated respiratory acidosis

A pH less than 7.35 and a PaCO2 greater than 7.45mm are both in the acidotic range. The HCO3 is still within range, meaning that the kidneys have not yet begun to retain bicarb to counteract the acidotic state.

Question 1

Pain experienced during a skin graft for a third-degree burn of the hand is an example of:

A) visceral pain
B) neuropathic pain
C) hyperalgesia
D) somatic pain

Answer 1

D. Somatic pain

Somatic pain arises from skin, bone, or joints.
Visceral pain involves internal organs such as bowel.
Neuropathic pain is caused by a lesion or dysfunction of the nervous system.
Hyperalgesia is an exaggerated response to painful stimuli.

Question 2

Which of the following humidity levels are considered optimal environmental conditions for the OR?

A) 10% to 40%
B) 20% to 50%
C) 30% to 60%
D) 40% to 70%

Answer 2

C) 30% to 60%

Low humidity increases the risk of electrostatic charges, a potential fire risk.
High humidity increases risk of microbial growth

Question 3

A procedure performed to repair defects in the eardrum is known as a:

A) mastoidectomy
B) stapedectomy
C) tympanoplasty
D) labyrinthectomy

Answer 3

C) tympanoplasty

A tympanoplasty refers to any procedure performed to repair perforations within the eardrum or repair defects of the middle ear.
A mastoidectomy is performed for eradication of infected mastoid cells.
A stapedectomy is a procedure in which the stapes is removed.
A labyrinthectomy is performed to relieve severe vertigo.

Question 4

A patient scheduled for placement of an arteriovenous shunt has the following ABG values: pH 7.28, PaCO2 29mEq/L, and HCO3 18mEq/L. Interpret the values

A) metabolic acidosis, uncompensated
B) metabolic acidosis, compensated
C) respiratory alkalosis, uncompensated
D) respiratory alkalosis, compensated

Answer 4

B) metabolic acidosis, compensated

pH less than 7.35 is acidotic, HCO3 less than 22mEq/L reflects loss of bicarb.
The respiratory system has compensated for the acidotic state by hyperventilating and lowering the CO2 level from its normal value of 35-45mEq/L.