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Chapter 20. Airway Management of a Morbidly Obese Patient Suffering from a Cardiac Arrest

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Which of the following is NOT true about airway management in obese patients?

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A. The presence of morbid obesity is a predictor for difficult mask ventilation.

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B. Jaw thrust has been shown to be less effective in the obese patients.

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C. Airway obstruction under anesthesia in obese patients even with the application of a jaw thrust is due to a decrease in the anterior-posterior dimension of the velopharynx (nasopharynx).

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D. Precipitous oxygenation desaturation usually occurs shortly following the induction and paralysis of obese patients.

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E. Based on weight alone, morbidly obese patients do not pose a risk for difficult intubation.

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(C) All the statement about airway management in obese patients are true except that airway obstruction under anesthesia in these obese patients even with the application of a jaw thrust is due to a decrease in the lateral plane and not the anterior-posterior dimension of the velopharynx (nasopharynx).

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Which of the following is NOT true of obstructive sleep apnea (OSA)?

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A. The majority of patients with OSA are obese.

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B. Larger neck circumference has been associated with increased severity of obstructive sleep apnea.

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C. The presence of snoring may be the only indicator of OSA in the general population.

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D. In patients with OSA, airway patency is disturbed by relaxation of pharyngeal dilator muscles during sleep.

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E. The snoring/obstruction/apnea cycle of OSA can be exacerbated by sedative and opioid medications including alcohol.

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(A) All of the listed statement about obstructive sleep apnea (OSA) are true, except that the majority of patients with OSA are not obese.

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Which of the following airway techniques is NOT known to be difficult in obese patients?

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A. Bag-mask-ventilation

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B. Surgical airway

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C. Light-guided intubation using a lightwand

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D. Laryngoscopic intubation is obese patients with thick necks

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E. Ventilation using a LMA

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(E) All the listed airway techniques are known to be difficult in obese patients with the exception of ventilation using an LMA.

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