eTCO2 & Capnography in Pre-hospital Care

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Questions and Answers

What is the byproduct of Glycolysis (stage 1) in cellular metabolism?

  • Carbon dioxide
  • Sodium bicarbonate
  • Water
  • Pyruvic acid (correct)

Which stage of cellular metabolism produces the most ATP?

  • Krebs Cycle (stage 2)
  • Respiratory Component
  • Electron Transport Chain (stage 3) (correct)
  • Glycolysis (stage 1)

What is a common byproduct of Krebs Cycle (stage 2) and the Electron Transport Chain (stage 3)?

  • Carbon dioxide (correct)
  • Hydrogen ions
  • Water
  • Lactic acid

Which component is responsible for controlling blood levels of bicarbonate in the body?

<p>Renal Regulation (A)</p> Signup and view all the answers

What does the Lung (pulmonary) Regulation do when CO2 blood levels rise?

<p>Lowers pH resulting in Acidosis (C)</p> Signup and view all the answers

What is expelled at the lungs via gas exchange as part of the Carbonic Acid-Bicarbonate mechanism?

<p>$CO_2$ (C)</p> Signup and view all the answers

What is the primary purpose of Capnography in the pre-hospital setting?

<p>Verifying ETT placement (B)</p> Signup and view all the answers

Which of the following is NOT a benefit of Waveform Capnography as stated in the passage?

<p>Measuring arterial blood gases (D)</p> Signup and view all the answers

What does End-tidal Carbon Dioxide (ETCO2) measure during exhalation?

<p>Cellular combustion (C)</p> Signup and view all the answers

What does Resuscitation Rule #1 state about the acid-base status of injured or ill patients?

<p>They will be in a state of cellular acidosis (D)</p> Signup and view all the answers

In the context of Capnography, what does V:Q stand for?

<p>Ventilation:Perfusion (A)</p> Signup and view all the answers

What is the significance of the term "Kapnos - smoke" in relation to Capnography?

<p>It refers to end-tidal carbon dioxide measurement (B)</p> Signup and view all the answers

What is the recommended minimal urine output for adults per hour?

<p>20-50mL (A)</p> Signup and view all the answers

What is the primary responsibility of Mean Arterial Pressure (MAP) in clinical assessment?

<p>Measure organ perfusion pressures (B)</p> Signup and view all the answers

What does the term 'Dead Space' in ventilation primarily refer to?

<p>Volume of air not reaching alveoli (C)</p> Signup and view all the answers

What is the primary content Capnography waveform represents?

<p>Alveolar gas PCO2 (D)</p> Signup and view all the answers

How is Tidal Volume defined in respiratory physiology?

<p>Volume of air exchanged during a deep breath (A)</p> Signup and view all the answers

What is the significance of assessing Ventilation as the first priority in the ETCO2 assessment sequence?

<p>To ensure proper oxygenation (A)</p> Signup and view all the answers

What are the normal PEEP pressures typically used to keep alveoli open during the resting phase?

<p>2-4 cmH2O (C)</p> Signup and view all the answers

In which conditions might high PEEP pressures be needed?

<p>CHF and acute respiratory distress syndrome (ARDS) (D)</p> Signup and view all the answers

What does Capnography depend on in terms of blood circulation and perfusion of gases?

<p>Blood circulation and perfusion of gases (B)</p> Signup and view all the answers

How does shock alter perfusion according to the text?

<p>Decreases cardiac output (D)</p> Signup and view all the answers

What is the main process involved in Perfusion in the body as described in the text?

<p>Blood delivery to organs (C)</p> Signup and view all the answers

What does diffusion primarily refer to in the context described?

<p>Movement of gases from higher to lower concentration (C)</p> Signup and view all the answers

What is the primary biomarker controlled by the kidneys for maintaining acid-base balance?

<p>Bicarbonate (HCO3-) (B)</p> Signup and view all the answers

Which condition poses a risk factor for developing respiratory alkalosis according to the text?

<p>Stroke (B)</p> Signup and view all the answers

What is the recommended End-tidal Carbon Dioxide (ETCO2) level during resuscitation according to the text?

<p>&gt; 20 mmHg (C)</p> Signup and view all the answers

In what situation would 'Hypoxia' contribute to a condition of pseudorespiratory alkalosis?

<p>During Seizures (D)</p> Signup and view all the answers

What is the main device/tool recommended for assessing the quality of chest compressions during cardiac arrest according to the text?

<p>Capnography (D)</p> Signup and view all the answers

Which condition is characterized by a primary reduction in bicarbonate with a compensatory reduction of pCO2?

<p>Pulmonary Embolism (D)</p> Signup and view all the answers

Inadequate tissue perfusion at the cellular level is associated with which of the following?

<p>Emphysema (D)</p> Signup and view all the answers

Which disorder is NOT listed as a cause of decreased eTCO2 in the text?

<p>Complete Acidosis (A)</p> Signup and view all the answers

Which condition results in an increase in Lactate acid with an inverse relationship to eTCO2?

<p>Severe Sepsis (D)</p> Signup and view all the answers

Which situation involves metabolic acidosis as a byproduct according to the text?

<p>Severe Hemorrhagic Shock (C)</p> Signup and view all the answers

Which condition is associated with fluctuating waveform related to shock and shunting of blood?

<p>Hypoperfusion (A)</p> Signup and view all the answers

What is the primary purpose of using Positive End-Expiratory Pressure (PEEP) in ventilation?

<p>To assist with alveolar recruitment (D)</p> Signup and view all the answers

How does Capnography waveform change in the presence of shock and shunting of blood?

<p>It shows a decreased end-tidal Carbon Dioxide (eTCO2) (D)</p> Signup and view all the answers

In patients with COPD, what is a potential complication related to diffusion?

<p>Impaired gas exchange (D)</p> Signup and view all the answers

What is the impact of shock on perfusion according to the text?

<p>Leads to hypoperfusion and pulmonary shunting (D)</p> Signup and view all the answers

Which condition necessitates high Positive End-Expiratory Pressure (PEEP) pressures?

<p>Pulmonary emboli (A)</p> Signup and view all the answers

What does Capnography depend on primarily in terms of blood circulation and perfusion?

<p>Circulation and perfusion of gases in the body (C)</p> Signup and view all the answers

What is the primary role of urine output in assessing patients?

<p>Monitoring cardiac output and renal function (C)</p> Signup and view all the answers

Which parameter does Mean Arterial Pressure (MAP) primarily assess?

<p>End organ perfusion pressures (D)</p> Signup and view all the answers

What does the term 'Dead Space' refer to in the context of ventilation?

<p>The volume of air not participating in gas exchange (A)</p> Signup and view all the answers

What does Waveform Capnography primarily represent?

<p>Gas Exchange in the lungs (C)</p> Signup and view all the answers

Which stage of cellular metabolism produces the most ATP?

<p>Electron Transport Chain (A)</p> Signup and view all the answers

What is the purpose of assessing Ventilation first in the ETCO2 assessment sequence?

<p>To identify gas exchange abnormalities (C)</p> Signup and view all the answers

What is the primary responsibility of End-tidal Carbon Dioxide (ETCO2) assessment according to the text?

<p>Evaluate the quality of chest compressions (C)</p> Signup and view all the answers

Which condition is NOT listed as a risk factor for Respiratory Alkalosis according to the text?

<p>Metabolic Acidosis (C)</p> Signup and view all the answers

What is the primary byproduct of Glycolysis in cellular metabolism?

<p>Lactic Acid (D)</p> Signup and view all the answers

Which parameter does Mean Arterial Pressure (MAP) primarily assess?

<p>Perfusion pressure (C)</p> Signup and view all the answers

What is the significance of the term 'Kapnos - smoke' in relation to Capnography?

<p>Relates to the invisible nature of carbon dioxide gas (A)</p> Signup and view all the answers

In the context of shock, what is the primary consequence of pulmonary shunting?

<p>Worsening of tissue hypoxia (D)</p> Signup and view all the answers

Which of the following disorders listed is NOT associated with a decreased end-tidal carbon dioxide (eTCO2) as per the text?

<p>Hypertensive Crisis (B)</p> Signup and view all the answers

What is the impact on bicarbonate levels in metabolic acidosis?

<p>Primary decrease (B)</p> Signup and view all the answers

Which condition leads to 'Complete Acidosis' as described in the text?

<p>DKA (B)</p> Signup and view all the answers

In shock and shunting, what is the primary risk factor for metabolic acidosis?

<p>Increased glycolysis (C)</p> Signup and view all the answers

What is the physiological impact of inadequate tissue perfusion at the cellular level in the context of shock?

<p>Worsening of tissue hypoxia (A)</p> Signup and view all the answers

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