answers
A rescuer delivering mouth to mask ventilation while wearing a nasal cannula at
8-10 L/min would deliver what FIO2 to the patient? Ans✓✓✓ About 30%
According to Branson, what are the 4 parts of a tracheostomy tube? Ans✓✓✓
Inner cannula, outer cannula, obturator, cuff
according to Branson, what are the 4 reasons for the low tidal volumes delivered
by the single-operator bag-valve mask technique? Ans✓✓✓ Leaks around the
mask, difficulty maintaining an open airway with one hand, difficulty to squeeze
800-1200 cc out of the bag with one hand, difficulty to coordinate the delivery of
breath during chest compressions so that gas is delivered into the lungs rather
than the stomach
According to Branson, what are the available sizes for oral-pharyngeal airways?
Ans✓✓✓ 000 to 6
According to Branson, what are the two contraindications to endotracheal
intubation? Ans✓✓✓ Complete airway obstruction, lack of a person trained and
experienced in intubation
According to Branson, why are the lung bases the best place to auscultate
following ET intubation? Ans✓✓✓ Right mainstem intubation may obstruct the
right upper lobe as well as the entire left lung
According to Egan, what are five primary therapeutic indications for fiber-optic
bronchoscopy? Ans✓✓✓ Brachytherapy (direct application of radiation therapy),
,Facilitation of endotracheal intubation, Removal of airway secretions, Removal of
aspirated foreign bodies, Therapeutic bronchial lavage, Palliative therapy of
malignant tumors causing obstruction, Laser phototherapy, Fulguration using
heater probes or bipolar electrodes
According to Egan, what are the three main diagnostic uses of fiberoptic
bronchoscopy? Ans✓✓✓ Inspection of lower airways, bronchography (injection
of dye to visualize airways radiographically), acquisition of specimens for
pathological examination
According to Egan, what percent of intubated patients aspirate pharyngeal
contents around the cuff of an ETT? Ans✓✓✓ Up to 70%
According to P & K, what are two relative contraindications to tracheostomy?
Ans✓✓✓ Recent sternotomy, presence of burned tissue or infection in the area
of the tracheotomy
According to Rose and Cohen, what three factors predict an increase in difficult
intubations? Ans✓✓✓ Male, obesity, age 40-59 years
According to the "guidelines for cardiopulmonary resuscitation and emergency
care" (JAMA), in order to prevent gastric insufflation, the flow of an oxygen-
powered resuscitator should be limited to what flow rate? Ans✓✓✓ 40 L/min (60
cmH2O)
According to the AHA, what is the recommended volume that should be delivered
to a patient during mask ventilation? Ans✓✓✓ 800ml (range 800-1200; ASTM -
600ml)
, According to the American Society for Testing and Materials, what should the
pop-off pressure be for infant and pediatric resuscitator bags? Ans✓✓✓ 40
cmH2O
An ETT primarily exerts pressure at what three locations? Ans✓✓✓
Posteromedial portions of the true vocal cords, posteromedial surface of the
arytenoid cartilages, posterolateral aspects of the cricoid cartilage
As a complication of artificial airways, what is the incidence of a TE fistula?
Ans✓✓✓ 1-5%
Because of the potential for development of granulation tissue and for
obstruction by secretions, fenestrated trach tubes should not be plugged for
longer than what duration? Ans✓✓✓ 16 hours
Branson lists several characteristics of an ideal face mask used for ventilation
purposes. To prevent rescuer fatigue and improve ventilation of the patient, the
valve-filter-extension should have minimal airflow resistance. According to ISO
standards, the back pressure produced by the device should be less than what
value? Ans✓✓✓ 5 cmH2O at a flow of 50 L/min
By what percent will the resistance change when going from a 6.0 mm ID ETT to a
5.0 mm ID ETT? Ans✓✓✓ Resistance will double (if radius decreases by 16%,
resistance doubles)
Carlens and White tubes both have a tracheal hook. Who makes a similar tube
designed to enter a mainstem bronchus, but does not have the carinal hook?
Ans✓✓✓ Robert Shaw