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NBRC Certified Respiratory Therapist Practice Tests & Test Prep by Exam Edge


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NBRC Certified Respiratory Therapist Sample Test

1 of 5

Your patient has suffered a head trauma. At what point would you expect this patient’s intracranial pressure to indicate that his clinical outcome will significantly worsen?





Correct Answer:
if it is more than 20 mm hg


intracranial pressure (icp) is a critical parameter in the management of patients who have suffered head trauma. icp refers to the pressure exerted within the skull by the brain tissue, cerebrospinal fluid (csf), and blood. normally, icp is maintained within a range of 7 to 15 mm hg. slight variations within this range are typically non-threatening and can be physiologically managed by the body's natural compensatory mechanisms which include the displacement of csf and changes in intracranial blood volume.

however, when icp exceeds 20 mm hg, it is considered pathologically elevated and can lead to significant complications. this elevation can result from various factors such as brain edema, accumulation of blood within the cranial vault (hematomas), or obstruction in csf flow, which are commonly associated with head injuries. when icp reaches or exceeds this threshold, the pressure can begin to compromise cerebral perfusion, the process by which the brain receives oxygen and nutrients from the blood.

the relationship between icp and cerebral perfusion is crucial. cerebral perfusion pressure (cpp) is calculated by subtracting the icp from the mean arterial pressure (map). a normal cpp is generally 70 to 100 mm hg. when icp rises to 20 mm hg and above, unless the map increases correspondingly, the cpp can drop below the necessary levels for adequate brain oxygenation and metabolism, leading to ischemia and potential brain damage.

clinical outcomes worsen significantly with sustained elevations of icp above 20 mm hg because of the risk of brain tissue hypoxia and subsequent neuronal death. additionally, very high icp can lead to herniation syndromes where parts of the brain are displaced from their normal positions, potentially compressing vital brain structures and leading to life-threatening conditions such as brain stem compression.

therefore, monitoring and managing icp post-head trauma is critical. interventions might include medical therapies to reduce brain edema, surgical procedures to remove hematomas, or drainage of csf to lower icp. continuous monitoring is essential for detecting adverse trends in icp early, and interventions are adjusted based on these measurements to optimize cpp and minimize brain damage, thereby improving the overall prognosis.

in conclusion, when managing a patient with head trauma, an icp greater than 20 mm hg is a critical threshold that indicates a significant worsening of the clinical outcome. it is a signal for immediate and aggressive intervention to prevent irreversible brain damage and improve survival rates.


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  • Comprehensive content: Exam Edge's NBRC Certified Respiratory Therapist practice tests are created specifically to prepare you for the real exam. All our NBRC CRT practice test questions parallel the topics covered on the real test. The topics themselves are covered in the same proportions as the real test too, based on outlines provided by the The National Board for Respiratory Care in their NBRC CRT test guidelines.

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  • Thousands of unique questions: We offer 5 different online practice exams with 700 unique questions to help you prepare for your NBRC Certified Respiratory Therapist!

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What score do I need to pass the NBRC CRT Exam?

To pass the NBRC Certified Respiratory Therapist test you need a score of 72.

The range of possible scores is 0 to 100.

How do I know the practice tests are reflective of the actual NBRC Certified Respiratory Therapist?

At Exam Edge, we are proud to invest time and effort to make sure that Our NBRC practice tests are as realistic as possible. Our practice tests help you prepare by replicating key qualities of the real test, including:

  • The topics covered
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We have a team of professional writers that create our NBRC Certified Respiratory Therapist practice test questions based on the official test breakdown provided by the The National Board for Respiratory Care. We continually update our practice exams to keep them in sync with the most current version of the actual certification exam, so you can be certain that your preparations are both relevant and comprehensive.

Do you offer practice tests for other The National Board for Respiratory Care subjects?

Yes! We offer practice tests for 2 different exam subjects, and there are 10 unique exams utilizing 1400 practice exam questions. Every subject has a free sample practice test you can try too!
NBRC Certified Respiratory Therapist (NBRC ® ) Practice Tests
NBRC Registered Respiratory Therapist (NBRC ® ) Practice Tests

To order tests, or take a sample test, for a different subject: Click on ' Name on the Exam Name' You will be take to the orders page

How do I register for the real The National Board for Respiratory Care?

For up-to-date information about registration for the The National Board for Respiratory Care, refer to the The National Board for Respiratory Care website.