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NSG170 Test 2: Gas Exchange and Perfusion Study Guide $9.99   Add to cart

Exam (elaborations)

NSG170 Test 2: Gas Exchange and Perfusion Study Guide

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  • NSG 170

NSG170 Test 2: Gas Exchange and Perfusion Study Guide Body systems involved in gas exchange - Answer️️ -Neurologic, respiratory, cardiovascular Ischemia - Answer️️ -Insufficient flow of oxygenated blood to tissues Hypoxia - Answer️️ -Insufficient oxygen reaching cells Anoxia - Ans...

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  • September 18, 2024
  • 13
  • 2024/2025
  • Exam (elaborations)
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  • NSG 170
  • NSG 170
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EmillyCharlotte
TITLE: EMILLYCHARLOTTE 2024/2025 ACADEMIC PERIOD
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FIRST PUBLISHED: SEPTEMBER 2024

NSG170 Test 2: Gas Exchange and
Perfusion Study Guide

Body systems involved in gas exchange - Answer✔️✔️-Neurologic, respiratory,

cardiovascular


Ischemia - Answer✔️✔️-Insufficient flow of oxygenated blood to tissues

Hypoxia - Answer✔️✔️-Insufficient oxygen reaching cells

Anoxia - Answer✔️✔️-Total lack of oxygen in body tissues

Hypoxemia - Answer✔️✔️-Reduced oxygenation of arterial blod

Medulla - Answer✔️✔️-Part of the brain responsible for breathing

Process of breathing in the brain - Answer✔️✔️-Chemoreceptors in the medulla sense

carbon dioxide levels. When these levels are elevated, receptors cause diaphragm and

intercostal muscles to contract

PaO2 - Answer✔️✔️-Partial pressure of oxygen in arterial blood

SaO2 - Answer✔️✔️-oxygen saturation, 95-100%

PaCO2 - Answer✔️✔️-partial pressure of carbon dioxide, 35-45 mmHg

Lifespan Considerations for gas exchange - Answer✔️✔️-Infants: Infants born before 30

weeks have a higher risk of impaired gas exchange. Infants will breathe out of their

noses until they are 3 months. Respiratory levels may be irregular with 10-25 second

pauses between breaths.

, TITLE: EMILLYCHARLOTTE 2024/2025 ACADEMIC PERIOD
OWNER: EMILLYCHARLOTTE
COPYRIGHT STATEMENT: ©2024 EMILLYCHARLOTTE. ALL RIGHTS RESERVED
FIRST PUBLISHED: SEPTEMBER 2024



Older adults: Decreased strength of respiratory muscles, weaker cough, dyspnea more

common, reduction in RBCs causes higher risk for anemia

Causes of impaired ventilation - Answer✔️✔️-Inadequate bone, muscle or nerve function;

Narrowed airways from constriction or obstruction; poor gas diffusion in the alveoli

(pneumonia)

Symptoms of impaired gas exchange - Answer✔️✔️-fatigue, tachypnea, tachycardia, low

O2 level, cyanosis, respiratory or metabolic acidosis, clubbed fingers, use of accessory

muscles, barrel-chest, tripoding

Risk factors for impaired gas exchange - Answer✔️✔️-Age: Infants, young children, older

adults; tobacco use; allergies; air pollution

Why are infants at risk for impaired gas exchange? - Answer✔️✔️-Fetal hemoglobin

causes a shorter lifespan for RBCs; Less alveolar surface area, narrower branching of

airways

Lab tests for gas exchange - Answer✔️✔️-Arterial blood gases, complete blood count,

sputum culture, skin tests, pathologic analysis, x-ray, CT scan, V/Q scan

Normal ABG values - Answer✔️✔️-pH: 7.35-7.45

SaO2: 95-100%

PaO2: 80-100 mm Hg

PaCO2: 35-45 mm Hg

HCO3: 22-26 mEq/L (Lower = acidosis, higher = alkalosis)

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