USPS EXAM 421 WINDOW CLERK FOR THE
UNITED STATES POSTAL SERVICE EXAM |
NEWEST ACTUAL EXAM COMPREHENSIVE
QUESTIONS AND VERIFIED ANSWERS
GRADED A+ | 100% PASS | 2025 UPDATE!
A nurse is taking a health history of a newly admitted patient with a
diagnosis of possible fecal impaction. Which question is the priority to
ask the patient or caregiver?
1. Have you eaten more high fiber foods lately
2. Have you taken antibiotics recently
3. Do you have gluten intolerance
4. Have you experienced frequent, small liquid stools recently - ✔✔✔
Correct Answer > Have you experienced frequent, small liquid stools
recently?
Which information is correct regarding physiological factors that affect
oxygenation?
1. Metabolic rate decreases normally in pregnancy, wound healing, and
exercise.
2. The physiological response to chronic hypoxemia is an increase in
white blood cell production.
,3. Carbon monoxide (CO) poisoning decreases the oxygen-carrying
capacity of the blood.
4. The oxygen-carrying capacity of the blood increases when there is a
decline in inspired oxygen concentration. - ✔✔✔ Correct Answer > 3.
Carbon monoxide (CO) poisoning decreases the oxygen-carrying
capacity of the blood.
Which skills can the nurse delegate to assistive personnel (AP)? (Select
all that apply.)
1. Initiate oxygen therapy via nasal cannula.
2. Perform nasotracheal suctioning of a patient.
3. Educate the patient about the use of an incentive spirometer.
4. Assist with care of an established tracheostomy tube.
5. Reposition a patient with a chest tube. - ✔✔✔ Correct Answer > 4.
Assist with care of an established trach tube
5. Reposition a patient with a chest tube
The nurse is caring for a patient with pneumonia. On entering the
room, the nurse finds the patient lying in bed, coughing, and unable to
clear secretions. What should the nurse do first?
1. Start oxygen at 2L/min via nasal cannula
2. Elevate the head of the bed to 45 degrees
3. Encourage the patient to use incentive spirometer
,4. Notify the health care provider - ✔✔✔ Correct Answer > 2. Elevate
the head of the bed to 45 degrees
Which statement is true regarding respiratory physiology?
1. Ventilation is the process of moving gases into and out of the lungs.
2. The diaphragm is the major expiratory muscle of respiration.
3. Ventilation requires muscular properties irrespective of the elastic
properties of the lungs.
4. The diaphragm is innervated by the phrenic nerve that exits the
cranium. - ✔✔✔ Correct Answer > 1. Ventilation is the process of
moving gases into and out of the lungs
Which condition causes bluish discoloration of the skin and mucous
membrane?
1. Hypoxia
2. Dehydration
3. Hyperlipidemia
4. Right sided cardiac failure - ✔✔✔ Correct Answer > 1. Hypoxia
Which condition causes decreased tissue oxygenation because of the
decreased oxygen-carrying capacity of the blood?
1. Obesity
, 2. Anemia
3. Pregnancy
4. Neuromuscular disease - ✔✔✔ Correct Answer > 2. Anemia
Hyperkalemia - ✔✔✔ Correct Answer > higher than 5
causes: burns, acute kidney failure, excessive potassium supplements
Hyperkalemia s/s - ✔✔✔ Correct Answer > Muscles weakness
hypotension
diarrhea
hyperactive bowel sounds
flat P wave
Hyperkalemia treatment/interventions - ✔✔✔ Correct Answer >
cardiac monitor
monitor I&O
potassium restricting diet
Hypocalcemia - ✔✔✔ Correct Answer > Lower than 8
Causes: inadequate intake of calcium and vit D, diarrhea, diuretics,
caffeine, crohns
UNITED STATES POSTAL SERVICE EXAM |
NEWEST ACTUAL EXAM COMPREHENSIVE
QUESTIONS AND VERIFIED ANSWERS
GRADED A+ | 100% PASS | 2025 UPDATE!
A nurse is taking a health history of a newly admitted patient with a
diagnosis of possible fecal impaction. Which question is the priority to
ask the patient or caregiver?
1. Have you eaten more high fiber foods lately
2. Have you taken antibiotics recently
3. Do you have gluten intolerance
4. Have you experienced frequent, small liquid stools recently - ✔✔✔
Correct Answer > Have you experienced frequent, small liquid stools
recently?
Which information is correct regarding physiological factors that affect
oxygenation?
1. Metabolic rate decreases normally in pregnancy, wound healing, and
exercise.
2. The physiological response to chronic hypoxemia is an increase in
white blood cell production.
,3. Carbon monoxide (CO) poisoning decreases the oxygen-carrying
capacity of the blood.
4. The oxygen-carrying capacity of the blood increases when there is a
decline in inspired oxygen concentration. - ✔✔✔ Correct Answer > 3.
Carbon monoxide (CO) poisoning decreases the oxygen-carrying
capacity of the blood.
Which skills can the nurse delegate to assistive personnel (AP)? (Select
all that apply.)
1. Initiate oxygen therapy via nasal cannula.
2. Perform nasotracheal suctioning of a patient.
3. Educate the patient about the use of an incentive spirometer.
4. Assist with care of an established tracheostomy tube.
5. Reposition a patient with a chest tube. - ✔✔✔ Correct Answer > 4.
Assist with care of an established trach tube
5. Reposition a patient with a chest tube
The nurse is caring for a patient with pneumonia. On entering the
room, the nurse finds the patient lying in bed, coughing, and unable to
clear secretions. What should the nurse do first?
1. Start oxygen at 2L/min via nasal cannula
2. Elevate the head of the bed to 45 degrees
3. Encourage the patient to use incentive spirometer
,4. Notify the health care provider - ✔✔✔ Correct Answer > 2. Elevate
the head of the bed to 45 degrees
Which statement is true regarding respiratory physiology?
1. Ventilation is the process of moving gases into and out of the lungs.
2. The diaphragm is the major expiratory muscle of respiration.
3. Ventilation requires muscular properties irrespective of the elastic
properties of the lungs.
4. The diaphragm is innervated by the phrenic nerve that exits the
cranium. - ✔✔✔ Correct Answer > 1. Ventilation is the process of
moving gases into and out of the lungs
Which condition causes bluish discoloration of the skin and mucous
membrane?
1. Hypoxia
2. Dehydration
3. Hyperlipidemia
4. Right sided cardiac failure - ✔✔✔ Correct Answer > 1. Hypoxia
Which condition causes decreased tissue oxygenation because of the
decreased oxygen-carrying capacity of the blood?
1. Obesity
, 2. Anemia
3. Pregnancy
4. Neuromuscular disease - ✔✔✔ Correct Answer > 2. Anemia
Hyperkalemia - ✔✔✔ Correct Answer > higher than 5
causes: burns, acute kidney failure, excessive potassium supplements
Hyperkalemia s/s - ✔✔✔ Correct Answer > Muscles weakness
hypotension
diarrhea
hyperactive bowel sounds
flat P wave
Hyperkalemia treatment/interventions - ✔✔✔ Correct Answer >
cardiac monitor
monitor I&O
potassium restricting diet
Hypocalcemia - ✔✔✔ Correct Answer > Lower than 8
Causes: inadequate intake of calcium and vit D, diarrhea, diuretics,
caffeine, crohns
