Chapter 8 quiz Flashcards
What happens after a cell in anaerobic metabolism breaks down glucose and creates energy in the form of adenosine triphosphate (ATP)?
A) Electrolytes in the cell become balanced.
B) Carbon dioxide and water are formed.
C) Lactic acid is formed.
D) Oxygen and water are created.
C) Lactic acid is formed.
The EMT would most likely see a narrowed pulse pressure in a patient who: A) has an irregular heartbeat. B) suffers from diabetes. C) is bleeding internally. D) has a fever.
C) is bleeding internally.
The patient in anaerobic metabolism is deficient of: A) lactic acid. B) protein. C) glucose (sugar). D) oxygen.
D) oxygen.
A patient’s brain cells are undergoing anaerobic metabolism. As a result, those cells:
A) are becoming dysfunctional in a highly acidic environment.
B) have too much adenosine triphosphate (ATP) to function properly.
C) cannot make any energy in the form of ATP.
D) are producing elevated quantities of carbon dioxide (CO2).
A) are becoming dysfunctional in a highly acidic environment.
The EMT would best recognize normal cellular metabolism as: A) oxygenated. B) aerobic. C) glycolytic. D) anaerobic.
B) aerobic.
A patient with liver disease suffers from a low platelet count. Which of the following would the EMT directly correlate to this condition? A) Pale skin color B) SpO2 90% C) Bruising to arms D) Heart rate 92
C) Bruising to arms
Which one of the following would most likely cause a patient to have a simple episode of syncope (fainting)?
A) Activation of the sympathetic nervous system
B) Sudden release of norepinephrine
C) Parasympathetic stimulation
D) Increase in systemic vascular resistance
C) Parasympathetic stimulation
A patient’s lungs are full of fluid and cannot transfer oxygen to the blood. As a result, she is in anaerobic metabolism. She has a decreased level of consciousness with a patent upper airway and inadequate respirations. Her pulse is rapid and weak. Which one of the following prehospital treatments would best address this situation?
A) High-concentration oxygen through a nonrebreather face mask
B) Intravenous (IV) fluids administered by paramedics
C) Insertion of a nasal airway and oxygen through a nasal cannula
D) Positive pressure ventilation with supplemental oxygen
D) Positive pressure ventilation with supplemental oxygen
Which of the following would directly compromise the average patient's cardiac output? A) Heart rate of 170 beats per minute B) Blood pressure of 118/52 C) Circulatory volume of 5 liters D) Increased number of circulating WBCs
A) Heart rate of 170 beats per minute
A patient with cancer is receiving chemotherapy. As a side effect of the treatment, her white blood cell count is critically low. Given this situation, which sign or symptom should the EMT find particularly concerning? A) History of diabetes B) Complaint of weakness C) Oral temperature 102.7°F D) Blood pressure of 102/64
C) Oral temperature 102.7°F
Question 11
1 / 1 pts
A drop in blood pressure below a critical threshold is a threat to the body because it directly impairs:
A drop in blood pressure below a critical threshold is a threat to the body because it directly impairs:
A) airway patency.
B) anaerobic metabolism.
C) the sympathetic nervous system.
D) cellular perfusion.
D) cellular perfusion.
When the cells undergo normal metabolism, which one of the following occurs?
A) Lactic acid is produced and excreted by the kidneys.
B) Decreased amounts of oxygen are required.
C) Adenosine triphosphate (ATP) is produced and excreted by the lungs.
D) Heat, carbon dioxide, and water are produced.
D) Heat, carbon dioxide, and water are produced.
You and the critical care transport team are taking a critically ill patient to another hospital. Among many IV infusions and monitors, the patient is also on a ventilator. You note that the FDO2 is set at 0.50. What does this mean?
A) Ventilations are provided when the patient breathes less than 50 times a minute.
B) The patient is being ventilated at a rate pf 50 breaths per minute.
C) Fifty percent of the patient’s respirations are provided by the ventilator.
D) The provided oxygen concentration is set at 50 percent.
D) The provided oxygen concentration is set at 50 percent.
You are caring for a 66-year-old male who is severely dehydrated. Given this condition, you would recognize which of the following related to the cardiovascular system?
A) Decreased ability of oxygen to diffuse from the lungs to the blood
B) Difficulty of the hemoglobin in carrying oxygen
C) Decreased production of white blood cells
D) Decreased blood volume available for circulation
D) Decreased blood volume available for circulation
Which one of the following best describes the concept of afterload?
A) Ability of the heart to adequately contract and pump blood
B) Amount of blood that a person has in the arteries at any one given moment
C) Amount of blood returned to the lungs for oxygenation
D) Pressure that the left ventricle must pump blood against
D) Pressure that the left ventricle must pump blood against
Baroreceptors function in the body by:
A) monitoring the blood pressure.
B) ensuring adequate oxygenation of the red blood cells.
C) monitoring the heart rate.
D) stimulating the production of red blood cells.
A) monitoring the blood pressure.
When a healthy person has a sudden increase in blood pressure, which one of the following will occur?
A) Chemoreceptors will increase the rate and depth of breathing.
B) Baroreceptors will directly stimulate the parasympathetic nervous system.
C) The heart rate will increase and blood vessels will constrict.
D) Baroreceptors will signal the brain to decrease the heart rate.
D) Baroreceptors will signal the brain to decrease the heart rate.
The body will compensate for a decrease in cardiac output by:
A) dilating to arteries, veins, and capillaries.
B) increasing systemic vascular resistance.
C) increasing the respiratory rate.
D) decreasing the heart rate.
B) increasing systemic vascular resistance.
Under normal circumstances, carbon dioxide is excreted from the body through the: A) sweat ducts. B) urinary tract. C) kidneys. D) lungs.
D) lungs.
What is the protective mechanism underlying a narrowed pulse pressure?
A) Stop the loss of blood internally or externally.
B) Maintain an adequate blood pressure for perfusion.
C) Increase the oxygen-carrying capacity of the red blood cells.
D) Increase the amount of oxygen entering the lungs.
B) Maintain an adequate blood pressure for perfusion.
Which one of the following would result from increasing a patient’s preload?
A) Decreased myocardial contraction
B) Increased cardiac output
C) Decreased blood pressure
D) Increased oxygen delivery into the lungs
B) Increased cardiac output
Paramedics have administered a medication to a patient in heart failure. The medication specifically causes the veins to enlarge, thus decreasing the amount of blood coming back to the heart for pumping. The EMT would recognize this action as: A) pulse pressure. B) preload. C) systemic vascular resistance. D) afterload.
B) preload.
For the patient with a narrowed pulse pressure, which one of the following is occurring?
A) The blood is being pumped more slowly.
B) The veins and arteries are dilating.
C) The heart rate is decreasing.
D) The blood vessels are constricting.
D) The blood vessels are constricting.
Which one of the following measurements indicates a narrowed pulse pressure? A) 210/138 B) 108/88 C) 120/76 D) 116/82
B) 108/88
If a patient’s blood pressure cannot be increased by adding volume, then which of the following actions would most likely be successful in increasing it?
A) Vasoconstriction
B) Decreasing the patient’s afterload
C) Blocking beta actions of the sympathetic nervous system
D) Decreasing the patient’s preload
A) Vasoconstriction
Which one of the following conditions must be met for carbon dioxide to be moved from the cell to the bloodstream?
A) The blood must be low in carbon dioxide.
B) There must be a high number of red blood cells in the blood.
C) The sodium/potassium pump must be functional.
D) There must be a high amount of oxygen in the blood.
A) The blood must be low in carbon dioxide.
A patient with a temperature of 105.4°F is suffering from systemic vasodilation. Which one of the following findings would be consistent with this condition? A) Slow heart rate B) Decreased blood pressure C) Elevated afterload D) Pale and cool skin
B) Decreased blood pressure
A slightly confused but conscious 61-year-old female with generalized weakness has a heart rate of 190 beats a minute. She has a history of high blood pressure and diabetes. Her blood pressure is 78/56 mmHg. Which one of the following would best explain the patient's presentation? A) Hypoglycemia B) Hemorrhage C) Hypoxia D) Tachycardia
D) Tachycardia
Which of the following statements about the ventilation/perfusion (V/Q) ratio in a healthy person is true?
A) The lower portion of the lungs has more oxygen than perfusion.
B) Blood flow and amount of ventilation are equal throughout the lungs.
C) Amount of blood is greater than amount of oxygen in the lungs.
D) The upper portion of the lungs has more ventilation than blood flow.
D) The upper portion of the lungs has more ventilation than blood flow.