100% satisfaction guarantee Immediately available after payment Both online and in PDF No strings attached
logo-home
CCRN REAL EXAM QUESTIONS AND CORRECT ANSWERS LATEST VERSION//ALREADY GRADED A+ what part of the brain in the primary control of ventilation $22.49   Add to cart

Exam (elaborations)

CCRN REAL EXAM QUESTIONS AND CORRECT ANSWERS LATEST VERSION//ALREADY GRADED A+ what part of the brain in the primary control of ventilation

 1 view  0 purchase
  • Course
  • CCRN REA
  • Institution
  • CCRN REA

CCRN REAL EXAM QUESTIONS AND CORRECT ANSWERS LATEST VERSION//ALREADY GRADED A+ what part of the brain in the primary control of ventilation CCRN REAL EXAM QUESTIONS AND CORRECT ANSWERS LATEST VERSION//ALREADY GRADED A+ what part of the brain in the primary control of ventilation

Preview 4 out of 68  pages

  • November 3, 2024
  • 68
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • CCRN REA
  • CCRN REA
avatar-seller
2024newestexams
CCRN REAL EXAM QUESTIONS AND CORRECT ANSWERS
2024-2025 LATEST VERSION//ALREADY GRADED A+
what part of the brain in the primary control of ventilation - CORRECT ANSWER-brain stem

-senses blood pH

-decrease in pH--> ventilation is stimulated (increases RR and depth of breathing)



Peripheral control of ventilation is Pa02. Where is Pa02 senses? - CORRECT ANSWER-aortic arch

-decreased Pa02 = hypoxemia

-decreased Pa02--> ventilation is stimulated



why do chronic PaC02 retainers rely on mild hypoxemia? - CORRECT ANSWER-for ventilator drive

-if Pa02 is corrected to normal, this will result in a decreased drive to breathe



what is the clinical indicator of ventilation? - CORRECT ANSWER-PaC02 (NOT Pa02)



What is minute ventilation? What is the normal? - CORRECT ANSWER-Tidal volume x Respiratory Rate

~4L/minute



An increase in minute ventilation causes - CORRECT ANSWER-an increase in work of breathing



What is the primary muscle of ventilation? - CORRECT ANSWER-diaphragm

anything that affects the health of the diaphragm (deconditioning, hypoxemia, acidosis,
hypophosphatemia) will affect ventilation



what is the position for optimal ventilation? - CORRECT ANSWER-Upright sitting

-supine is NOT good for ventilation



what causes alveolar dead space? - CORRECT ANSWER-PE, non-perfused alveoli

,-no gas exchange, no blood flow to the alveoli past the area of the blood clot



what is pulmonary perfusion - CORRECT ANSWER--movement of blood past alveoli through pulmonary
capillaries



what causes decreased pulmonary perfusion? - CORRECT ANSWER-any decrease in blood flow past the
alveoli

-PE

-low cardiac output



"good" lung up or down? - CORRECT ANSWER-"good" lung down

-gravity increases pulmonary perfusion



what is an example of a respiratory pathological shunt? –

CORRECT ANSWER-ARDS- movement of blood from the right side of the heart to the left side of the
heart without getting oxygenates; venous blood moves to the arterial side. **refractory hypoxemia**



what is the treatment for a respiratory pathological shunt? - CORRECT ANSWER-oxygen and PEEP



how does PEEP help? - CORRECT ANSWER--prevents expiratory pressure from returning to zero

-decreases surface tension of alveoli; preventing atelectasis

-extends time of gas transfer



At the cellular level, sufficient oxygen is needed for the production of - CORRECT ANSWER-ATP

-which is needed for cell energy and life

-aerobic metabolism



without sufficient oxygen at the cellular level, what is produced? - CORRECT ANSWER-lactic acid

-which is evidence of anaerobic metabolism, organ failure, cell death

,what can effect oxygenation that is not related to ventilation? - CORRECT ANSWER--severe anemia

-low cardiac output

-inability to utilize oxygen ex. sepsis (lactate acidosis)



what conditions cause a shift to the left of the oxyhemoglobin dissociation curve? (hemoglobin holds on
to oxygen molecules) - CORRECT ANSWER--alkalosis

-low PaC02

-hypothermia

low 2, 3-DPG



does hemoglobin hold or to or release oxygen molecules when there is a left shift of oxyhemoglobin
dissociation - CORRECT ANSWER-hold on to molecules



does hemoglobin hold or to or release oxygen molecules when there is a right shift of oxyhemoglobin
dissociation - CORRECT ANSWER-release oxygen more easily into the tissues



what conditions cause a shift to the right of the oxyhemoglobin dissociation curve? (hemoglobin
releases oxygen molecules) - CORRECT ANSWER--acidosis

-high PaC02

-fever

-high 2,3-DPG



is a left shift of oxyhemoglobin dissociation good or bad for the tissues - CORRECT ANSWER-bad for the
tissues

hemoglobin holds on to oxygen



is a right shift of oxyhemoglobin good or bad for the tissues - CORRECT ANSWER-good for the tissues

Sa02 is low but 02 is easily released to the tissues



what is 2, 3-DPG - CORRECT ANSWER-2, 3- diphosphoglycerate

, organic phosphate found in RBC that has the ability to alter the affinity of hgb for oxygen



where is 2, 3-DPG found - CORRECT ANSWER-in the RBC



what causes decreased 2, 3-DPG - CORRECT ANSWER--multiple blood transfusion

-hypothyroid

-hypophosphatemia

**hemoglobin holds onto O2 resulting in less 02 available to tissues**



what increases 2, 3-DPG - CORRECT ANSWER--chronic hypoxemia

-anemia

-high altitudes

-chronic HF

-hyperthroid

**hemoglobin more readily releases 02 resulting in more 02 available to tissues)



carbon monoxide has a high or lower affinity for hemoglobin than oxygen - CORRECT ANSWER-high
affinity for hemoglobin than oxygen

--do NOT measure CO poisoning with pulse ox



how do you treat carbon monoxide poisoning - CORRECT ANSWER-100% Fi02 (despite what the pulse ox
reads)

severe cases- hyperbaric oxygen chamber



what is static complaince - CORRECT ANSWER-measurement of elastic properties of the LUNG

-a decrease in compliance increases resistance or stiffness



how will plateau pressures affect static lung compliance - CORRECT ANSWER-an increase in plateau
pressures will decrease static lung compliance

The benefits of buying summaries with Stuvia:

Guaranteed quality through customer reviews

Guaranteed quality through customer reviews

Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.

Quick and easy check-out

Quick and easy check-out

You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.

Focus on what matters

Focus on what matters

Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!

Frequently asked questions

What do I get when I buy this document?

You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.

Satisfaction guarantee: how does it work?

Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.

Who am I buying these notes from?

Stuvia is a marketplace, so you are not buying this document from us, but from seller 2024newestexams. Stuvia facilitates payment to the seller.

Will I be stuck with a subscription?

No, you only buy these notes for $22.49. You're not tied to anything after your purchase.

Can Stuvia be trusted?

4.6 stars on Google & Trustpilot (+1000 reviews)

80461 documents were sold in the last 30 days

Founded in 2010, the go-to place to buy study notes for 14 years now

Start selling
$22.49
  • (0)
  Add to cart