Question 1

Why should you NOT heat the reservoirs of a bubble humidifier used with an oronasal oxygen delivery system?

Accepted Answer

A) Condensate will obstruct the delivery tubing. 
B) Heating will melt the reservoir or cause a fire. 
C) Heating will absorb the extra water vapor. 
D) Heating will causes too much aerosol impaction. 
A) Condensate will obstruct the delivery tubing. 
B) Heating will melt the reservoir or cause a fire. 
C) Heating will absorb the extra water vapor. 
D) Heating will causes too much aerosol impaction.

Question 2

Conditions that can cause temperature "overshoot" with servo-controlled heated humidifiers include all of the following except:

Accepted Answer

A) The unit is allowed to warm up without flow. 
B) Flow is decreased during normal operation. 
C) The airway temperature probe becomes dislodged. 
D) The unit reservoir is refilled with sterile water. 
A) The unit is allowed to warm up without flow. 
B) Flow is decreased during normal operation. 
C) The airway temperature probe becomes dislodged. 
D) The unit reservoir is refilled with sterile water.

Question 3

The amount of condensation occurring in a heated, humidified gas delivery system depends on which of the following?
I.length, diameter, and mass of the circuit
II.temperature differential along the circuit
III.ambient temperature
IV.rate of gas flow through the circuit

Accepted Answer

A) II and IV 
B) I, II, and III 
C) III and IV 
D) I, II, III, and IV 
A) II and IV 
B) I, II, and III 
C) III and IV 
D) I, II, III, and IV

Question 4

All of the following reduce the risk of nosocomial infection when using heated humidification systems except:

Accepted Answer

A) use of wick or membrane humidifiers 
B) use of heated-wire delivery circuits 
C) high humidifier reservoir temperatures 
D) frequent changing of delivery circuits 
A) use of wick or membrane humidifiers 
B) use of heated-wire delivery circuits 
C) high humidifier reservoir temperatures 
D) frequent changing of delivery circuits

Question 5

Hazards and complications of bland aerosol therapy include all of the following except:

Accepted Answer

A) bronchospasm 
B) overhydration 
C) infection 
D) hemoconcentration 
A) bronchospasm 
B) overhydration 
C) infection 
D) hemoconcentration

Question 6

Which of the following devices would you recommend to administer bland water aerosol to an infant or small child?

Accepted Answer

A) face tent 
B) croup tents 
C) T-tube 
D) aerosol mask 
A) face tent 
B) croup tents 
C) T-tube 
D) aerosol mask

Question 7

What is the typical water vapor output of an unheated bubble humidifier?

Accepted Answer

A) 5 to 10 mg/L 
B) 10 to 15 mg/L 
C) 15 to 20 mg/L 
D) 20 to 25 mg/L 
A) 5 to 10 mg/L 
B) 10 to 15 mg/L 
C) 15 to 20 mg/L 
D) 20 to 25 mg/L

Question 8

Causes of inadequate mist production with pneumatically powered jet nebulizers include all of the following except:

Accepted Answer

A) inadequate input flow 
B) siphon tube obstruction 
C) jet orifice misalignment 
D) tripped circuit breaker 
A) inadequate input flow 
B) siphon tube obstruction 
C) jet orifice misalignment 
D) tripped circuit breaker

Question 9

Which of the following are the proper temperature alarm settings for a heated humidifier used during mechanical ventilation? High
Low

Accepted Answer

A)  $40 ^ { \circ } \mathrm { C } \quad 30 ^ { \circ } \mathrm { C }$ 
B)  $37 ^ { \circ } \mathrm { C } \quad 30 ^ { \circ } \mathrm { C }$ 
C)  $32 ^ { \circ } \mathrm { C } \quad  35 ^ { \circ } \mathrm { C }$ 
D)  $45 ^ { \circ } \mathrm { C }  \quad 35 ^ { \circ } \mathrm { C }$ 
A)  $40 ^ { \circ } \mathrm { C } \quad 30 ^ { \circ } \mathrm { C }$ 
B)  $37 ^ { \circ } \mathrm { C } \quad 30 ^ { \circ } \mathrm { C }$ 
C)  $32 ^ { \circ } \mathrm { C } \quad  35 ^ { \circ } \mathrm { C }$ 
D)  $45 ^ { \circ } \mathrm { C }  \quad 35 ^ { \circ } \mathrm { C }$

Question 10

When using a servo-controlled heated humidifier to deliver gas to an infant, the thermistor probe should be placed where?

Accepted Answer

A) inside the circuit, outside the incubator, or away from the radiant warmer 
B) outside the circuit, inside the incubator, or away from the radiant warmer 
C) inside the circuit, inside the incubator, or away from the radiant warmer 
D) outside the circuit, outside the incubator, or away from the radiant warmer 
A) inside the circuit, outside the incubator, or away from the radiant warmer 
B) outside the circuit, inside the incubator, or away from the radiant warmer 
C) inside the circuit, inside the incubator, or away from the radiant warmer 
D) outside the circuit, outside the incubator, or away from the radiant warmer

Question 11

What are some potential problems with manually refilled heated humidifier reservoirs?
I.cross-contamination and infection
II.variable compliance or delivered volume
III.delivery of dry and/or hot gases

Accepted Answer

A) I and II 
B) II and III 
C) I and III 
D) I, II, and III 
A) I and II 
B) II and III 
C) I and III 
D) I, II, and III

Question 12

All of the following are TRUE when heated wire circuits are used with heated humidifiers except:

Accepted Answer

A) The humidifier operates at a higher temperature. 
B) There is less condensate and a reduced need for drainage. 
C) Cost savings (less water and staff time) are realized. 
D) There is less infection risk for both patient and caregivers. 
A) The humidifier operates at a higher temperature. 
B) There is less condensate and a reduced need for drainage. 
C) Cost savings (less water and staff time) are realized. 
D) There is less infection risk for both patient and caregivers.

Exam 35: Humidity and Bland Aerosol Therapy

Why should you NOT heat the reservoirs of a bubble humidifier used with an oronasal oxygen delivery system?

Conditions that can cause temperature "overshoot" with servo-controlled heated humidifiers include all of the following except:

The amount of condensation occurring in a heated, humidified gas delivery system depends on which of the following? I.length, diameter, and mass of the circuit II.temperature differential along the circuit III.ambient temperature IV.rate of gas flow through the circuit

All of the following reduce the risk of nosocomial infection when using heated humidification systems except:

Hazards and complications of bland aerosol therapy include all of the following except:

Which of the following devices would you recommend to administer bland water aerosol to an infant or small child?

What is the typical water vapor output of an unheated bubble humidifier?

Causes of inadequate mist production with pneumatically powered jet nebulizers include all of the following except:

Which of the following are the proper temperature alarm settings for a heated humidifier used during mechanical ventilation? High Low

When using a servo-controlled heated humidifier to deliver gas to an infant, the thermistor probe should be placed where?

What are some potential problems with manually refilled heated humidifier reservoirs? I.cross-contamination and infection II.variable compliance or delivered volume III.delivery of dry and/or hot gases

All of the following are TRUE when heated wire circuits are used with heated humidifiers except:

History of Respiratory Care

Quality and Evidence-Based Respiratory Care

Patient Safety, Communication, and Record Keeping

Principles of Infection Control

Ethical and Legal Implications of Practice

Physical Principles of Respiratory Care

Computer Applications in Respiratory Care

The Respiratory System

The Cardiovascular System

Ventilation

Gas Exchange and Transport

Solutions, Body Fluids, and Electrolytes

Acid-Base Balance

Regulation of Breathing

Bedside Assessment of the Patient

Interpretation of Clinical Laboratory Data

Interpreting the Electrocardiogram

Analysis and Monitoring of Gas Exchange

Pulmonary Function Testing

A Review of Thoracic Imaging

Nutrition Assessment

Pulmonary Infections

Obstructive Lung Disease: Copd, Asthma, and Related Diseases

Interstitial Lung Disease

Pleural Diseases

Pulmonary Vascular Disease

Acute Lung Injury, Pulmonary Edema, and Multiple System Organ

Lung Cancer

Neuromuscular and Other Diseases of the Chest Wall

Disorders of Sleep

Neonatal and Pediatric Respiratory Disorders

Airway Pharmacology

Airway Management

Emergency Cardiovascular Life Support

Aerosol Drug Therapy

Storage and Delivery of Medical Gases

Medical Gas Therapy

Lung Expansion Therapy

Bronchial Hygiene Therapy

Respiratory Failure and the Need for Ventilatory Support

Mechanical Ventilators

Physiology of Ventilatory Support

Initiating and Adjusting Ventilatory Support

Noninvasive Positive Pressure Ventilation

Monitoring and Management of the Patient in the Intensive Care Unit

Discontinuing Ventilatory Support

Neonatal and Pediatric Respiratory Care

Patient Education and Health Promotion

Cardiopulmonary Rehabilitation

Respiratory Care in Alternative Settings

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