Humidification

Front 1

Therapeutic gases being delivered to patients need to be humidified because they?

Back 1

Are in anhydrous state

Front 2

Which measures can reduce the incidence of infection associated with large volume heated humidifier systems?

Back 2

using prepackaged sterile disposables or wick humidifiers, using closed feed sterile water reservoir systems, and changing the humidifier/circuitry every 24-48hrs

Front 3

Potential risks of long-term humidity therapy with a large volume heated humidifier include?

Back 3

alterations in normal heat and water exchange, the possibility of infection, and the possibility of electrical shock

Front 4

Which conditions should be maintained for patients whose upper airway have been bypassed?

Back 4

100% RH at 32 to 34 degrees Celsius

Front 5

In intubated patients, mucociliary clearance can become impaired when the inspired water vapor content drops below?

Back 5

50-75% body humidity

Front 6

According to ANSI standards, the minimum level of absolute humidity used to deliver therapeutic gases to patients whose upper airways have been bypassed is?

Back 6

30mg/L

Front 7

A patient has been supported by mechanical ventilator using a hygroscopic condenser humidifier (HME) for the last 3 days. Suctioning reveals an increase in the amount and tenacity of secretions. What actions are indicated?

Back 7

switch the patient to a large volume heated humidifier

Front 8

The rationale for using large-bore (22mm) delivery tubing with large volume heated humidifier systems is to?

Back 8

decrease the likelihood of condensate occluding the tubing

Front 9

The only way to eliminate the possibility of condensate occluding the tubing of large volume heated humidifier system is to?

Back 9

heat the delivery tubing to near body temp (32-34C)

Front 10

Most commercially available hygroscopic condenser humidifiers are capable of providing what percent body humidity?

Back 10

50-65%

Front 11

In order to increase the efficiency of a pass-over or “blow by” humidifier, you could?

Back 11

heat the water reservoir and add baffles to the gas stream

Front 12

Unheated bubble-diffusion humidifiers are capable of supplying approximately what percent body humidity?

Back 12

35-45%

Front 13

A humidifier design that increases surface area and enhances evaporation by incorporating a porous hygroscpic material partially submerged in a water reservoir best describes a?

Back 13

wick

Front 14

What actions can decrease the likelihood of condensate occluding the tubing of a large volume heated humidifier system?

Back 14

, water traps, checking the tubing for condensate and drain, prevent drooping, heating the delivery tubing to temperatures above ambient

Front 15

In order to deliver gases at or near body temp to a pt, temp at the outlet of a heated humidifier will range b/w?

Back 15

48-50 degree Celsius

Front 16

Objectives of aerosol therapy include?

Back 16

to provide humidification to the resp. tract and route for drug administration, and to serve as an adjunct for mobilization of secretions

Front 17

. Distilled water solutions are often used for sputum induction. What are the physiologic principles underlying the use of distilled water as the aerosol medium for sputum induction?

Back 17

it mixes w/surface secretions, increasing the volume and it causes irritation and cough

Front 18

Which of the following represent advantages of the aerosol route for drug administration?

Back 18

minimal extrapulmonary (systemic) effects, rapid onset of desired therapeutic effect, and ease/availability of respiratory tract route

Front 19

What disadvantages are there for aerosol route for drug administration?

Back 19

req. pt. cooperation for optimum delivery, high percentage of deposition in oropharynx, and potential source of nosocomial infection

Front 20

The primary objective of cool (unheated) water aerosol therapy in the treatment of inflammatory obstructions like laryngitis or croup is to?

Back 20

soothe inflamed tissues and reduce edema