Question 1
What temperature is used to “arterialize” the capillary blood in PcO2 and PO2 electrodes?
Correct Answer:
44 degrees Celsius
Explanation:
To "arterialize" the capillary blood in partial pressure of oxygen (PcO2) and partial pressure of carbon dioxide (PO2) electrodes, a higher temperature, specifically 44 degrees Celsius, is used. This elevated temperature is significant because it helps to increase the solubility of gases in the blood sample, enhancing the diffusion of oxygen into the plasma from the cells within the capillaries. As the temperature rises, the kinetic activity of the gas molecules increases, allowing for improved interaction with the electrode and more accurate readings of the partial pressures of oxygen and carbon dioxide. Using a temperature of 44 degrees Celsius is a standard practice in capillary blood gas analysis to mimic conditions closer to those found in arterial blood, making it possible to obtain results that reliably represent the true oxygenation and ventilation status of the patient. The choice of a lower temperature would not facilitate the same level of gas exchange and might lead to less accurate measurements.
Question 2
What device should be used to verify the output accuracy of a Bourdon gauge regulator?
Correct Answer:
Precision flowmeter
Explanation:
The precision flowmeter is the ideal device to verify the output accuracy of a Bourdon gauge regulator because it measures the actual flow rate of gas being delivered. The Bourdon gauge is used to monitor pressure and may not provide a direct indication of flow accuracy. The precision flowmeter provides a quantitative measurement, allowing the clinician to compare the flow delivered by the regulator against the expected values, ensuring that the patient receives the correct amount of gas. On the other hand, while a manometer is useful for measuring pressure, it does not provide flow measurements essential for assessing the performance of the regulator. A flow restrictor would limit the flow but would not measure it, failing to confirm the accuracy of the output. A pressure gauge, like the Bourdon gauge, gives pressure readings but does not assess flow accuracy. Thus, the precision flowmeter is the most appropriate tool for verifying the accuracy of gas delivery from a Bourdon gauge regulator.
Question 3
What is the primary purpose of chemical indicators in sterilization processing?
Correct Answer:
To show that a package has gone through sterilization
Explanation:
The primary purpose of chemical indicators in sterilization processing is to show that a package has gone through sterilization. These indicators undergo a color change or some form of visual change when exposed to specific sterilization conditions, such as heat or steam, confirming that the sterilization process has been initiated. They are essential for verifying that items have been subjected to the necessary conditions without guaranteeing that the items are sterile. While ensuring the contents are sterile is a vital outcome of successful sterilization, chemical indicators alone do not provide evidence of the sterility of the contents themselves. Similarly, real-time sterilization feedback typically refers to monitoring devices that provide immediate results about the effectiveness of the sterilization process, which goes beyond the capabilities of chemical indicators. Lastly, while temperature indicators are useful for confirming that the sterilizer reached appropriate temperatures, they do not fulfill the role of chemical indicators, which specifically verify exposure to sterilization processes rather than just temperature.
Question 4
What is a common indication for performing a tracheostomy?
Correct Answer:
Prolonged mechanical ventilation or airway obstruction
Explanation:
A tracheostomy is a surgical procedure that involves creating an opening in the trachea through the neck to facilitate breathing. One of the main indications for performing a tracheostomy is prolonged mechanical ventilation or significant airway obstruction. In situations where a patient requires long-term respiratory support, a tracheostomy provides a more stable and secure airway compared to endotracheal intubation. It can minimize complications related to prolonged intubation, such as tracheal injury or accidental extubation. Additionally, in cases of airway obstruction due to anatomical issues, severe edema, or other conditions that impede airflow, a tracheostomy can bypass the obstructed area directly, allowing for more effective ventilation. This procedure can greatly improve respiratory function and the patient's overall management when these issues are present.
Question 5
How is chronic bronchitis characterized?
Correct Answer:
Persistent cough with mucus production
Explanation:
Chronic bronchitis is characterized primarily by a persistent cough that is accompanied by mucus production. This condition is part of a group of respiratory disorders known as chronic obstructive pulmonary disease (COPD). The persistent cough reflects the inflammation and irritation of the airways that leads to increased mucus secretion, which is a hallmark of chronic bronchitis. Over time, this chronic inflammation can reduce airflow and contribute to respiratory distress. In individuals with chronic bronchitis, the cough typically lasts for at least three months and occurs over two consecutive years, providing a clear definition of the condition. The production of sputum, or mucus, is a crucial factor that helps differentiate chronic bronchitis from other SAMPLErespiratory conditions, as this symptom is not present in conditions such as asthma or emphysema in the same manner. Thus, the key features of chronic bronchitis — the persistent nature of the cough along with the production of mucus — underscore the pathophysiology of this chronic respiratory condition.
Question 1
Exam overview

About this Exam

The Certified Respiratory Therapist (CRT) credential is the foundational licensure for professionals entering the dynamic field of respiratory care.

Administered by the National Board for Respiratory Care (NBRC), this certification validates that an individual possesses the core knowledge and skills necessary to provide safe and effective respiratory care to patients.

It is specifically designed for graduates of accredited respiratory therapy education programs (either Associate or Bachelor’s degree level) who are seeking their first professional credential to practice in various healthcare settings, including hospitals, clinics, and home care.

Achieving the CRT designation is not only a significant professional milestone but is also a legal requirement for licensure in most states within the United States.

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Additional Information

 What the Course Entails and Exam Details

While there is no single "course" for the CRT exam, your entire respiratory therapy educational program is the preparation groundwork.

The exam itself—officially known as the Therapist Multiple-Choice (TMC) Examination—measures your entry-level competency across several critical domains.

The examination content is based on a national job analysis of respiratory therapists, ensuring it reflects current clinical practice.

Key pillars of knowledge covered include:

  • Patient Assessment: Techniques for gathering and evaluating subjective and objective patient data, including physical examination, laboratory values, and imaging findings.
  • Respiratory Care Procedures: A comprehensive understanding of therapies such as oxygen administration, humidity and aerosol therapy, airway management, and arterial blood gas analysis.
  • Equipment and Technology: Operation, troubleshooting, and maintenance of essential respiratory care equipment, including ventilators, monitors, and diagnostic tools.
  • Pathophysiology and Pharmacology: Knowledge of respiratory diseases (e.g., asthma, COPD, pneumonia) and the mechanics and side effects of medications used in treatment.
  • Therapeutic Interventions: Implementing and modifying care plans, including mechanical ventilation settings and weaning protocols.

 

 What to Expect in the Final Exam

The CRT is obtained by passing the NBRC’s Therapist Multiple-Choice (TMC) Examination.

This is a comprehensive computer-based test composed exclusively of multiple-choice questions.

Here is a breakdown of what to expect on test day:

  • Total Questions: The TMC Examination consists of 160 multiple-choice questions.
  • Scoring Structure: Of these 160 questions, 140 are scored, and 20 are "pretest" questions used for future exam development; these pretest questions do not affect your final score.
  • Passing Score: The TMC Examination has two cut scores. Achieving the lower cut score grants you the CRT credential. If you achieve the higher cut score, you not only earn the CRT but also become eligible to take the Clinical Simulation Examination (CSE) to earn the Registered Respiratory Therapist (RRT) credential.
  • Time Limit: Candidates are given a total of three (3) hours to complete the entire examination.
  • Exam Rules: The exam is strictly monitored. No personal items, notes, or outside electronics are allowed in the testing room. You will be provided with scratch paper and an on-screen calculator.

 

 How to Study and Exam Centers

Effective preparation for the CRT exam requires a structured approach that combines a review of academic knowledge with strategic test-taking practice.

A successful study strategy often includes the following elements:

  • Utilize Official Resources: Your first and most valuable resource is the NBRC itself. Download the official TMC Content Outline and use the provided self-assessment examinations to understand the exact format and type of questions asked.
  • Comprehensive Review Guides: Invest in reputable CRT/RRT review books that summarize key concepts and offer practice questions with rationales. These rationales are crucial, as they explain why an answer is correct.
  • Take Full-Length Practice Exams: Simulate the test-day experience by taking multiple full-length, timed practice tests. This builds endurance and improves time management skills.
  • Focus on Weakness: Use your practice test results to identify areas where you struggle. Dedicate extra study time to these specific topics until your comprehension improves.

The TMC Examination is administered internationally at specialized computer testing centers.

  • Testing Centers: The NBRC partners with PSI, a leading global provider of assessment services. PSI has hundreds of secure testing centers located throughout the United States and internationally.
  • Scheduling: Once you have submitted your application to the NBRC and received your eligibility confirmation, you will schedule your specific exam date and location directly through PSI’s online portal or by phone.

 

 Job Opportunities from the Course

Earning your CRT credential is the key that unlocks numerous rewarding career paths within the healthcare industry.

As a certified professional, you will be in high demand in a variety of settings.

Here are some specific job titles and career paths available to you:

  • Certified Respiratory Therapist (CRT)
  • Staff Respiratory Therapist
  • Hospital Respiratory Therapist (Critical Care, ED, Floors)
  • Neonatal Respiratory Therapist
  • Pediatric Respiratory Therapist
  • Home Health Respiratory Therapist
  • Travel Respiratory Therapist
  • Pulmonary Function Technologist
  • Sleep Disorder Specialist (with additional training)
  • Cardiopulmonary Rehabilitation Specialist

Respiratory Care Educator

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