Question

Nurse is teaching a group of older women about factors that increase the risk of urinary tract infections (UTIs). Which of the following explanations should the nurse include?

Answer 1

Correct Answers:

"The vaginal pH in older women becomes more alkaline, creating an environment for bacterial growth."

Rationale :

🟤 After menopause, declining estrogen levels lead to thinning of the vaginal epithelium and decreased glycogen content.

🟤 Reduced glycogen lowers the growth of Lactobacillus, which normally maintains an acidic vaginal environment.

🟤 As Lactobacillus decreases, the vaginal pH becomes more alkaline.

🟤 An alkaline environment promotes colonization by uropathogens such as E. coli.

🟤 These physiologic changes increase the risk of urinary tract infections in older women.

❌ A more acidic vaginal environment actually helps protect against bacterial growth.

❌ Acidity decreases UTI risk rather than increases it.

❌ Vaginal pH does not become more acidic with aging.

❌ It becomes more alkaline after menopause.

❌ Although estrogen changes affect pH, they do not reduce UTI risk.

❌ Lower estrogen increases susceptibility to infection.

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Answer 2

Correct Answers:

Pulse below 60 bpm
Feeling faint or dizzy
Pale, sweaty skin
Nausea

Rationale :

🔵 Pulse below 60 bpm

🔵 The vagus nerve is the primary nerve of the parasympathetic nervous system and directly influences heart rate through the sinoatrial node.

🔵 When stimulated, it increases vagal tone, leading to bradycardia (heart rate <60 bpm).

🔵 This occurs because acetylcholine release slows electrical conduction in the heart.

🔵 During procedures, anxiety, pain, or sudden positional changes can trigger this response.

🔵 A heart rate of 50 bpm in this context is a classic sign of vagal stimulation.

🔵 Feeling faint or dizzy

🔵 Increased vagal tone causes both bradycardia and peripheral vasodilation, leading to decreased blood pressure.

🔵 Reduced cardiac output temporarily lowers cerebral perfusion.

🔵 The brain’s decreased oxygen delivery produces dizziness or lightheadedness.

🔵 Patients may report tunnel vision or a sensation of impending syncope.

🔵 These symptoms are hallmark features of a vasovagal reaction.

🔵 Pale, sweaty skin

🔵 Vagal stimulation triggers autonomic imbalance, resulting in diaphoresis.

🔵 Peripheral vasodilation reduces blood flow to the skin, causing pallor.

🔵 The skin often appears cool and clammy rather than warm.

🔵 This response is part of the body’s reflex to sudden hypotension.

🔵 Pallor combined with sweating strongly supports a vasovagal episode.

🔵 Nausea

🔵 The vagus nerve also innervates the gastrointestinal tract.

🔵 Excessive parasympathetic stimulation increases gastric activity and can cause nausea.

🔵 Patients may feel queasy or have an urge to vomit during an episode.

🔵 This symptom frequently precedes syncope.

🔵 Nausea is therefore a common associated manifestation of vagus nerve stimulation.

❌ Chest heaviness or pressure

❌ This symptom is more suggestive of cardiac ischemia or angina, not isolated vagal stimulation.

❌ Flushed, warm skin

❌ Vasovagal reactions typically cause pallor and cool skin, not flushing.

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Answer 3

Correct Answers:

Peroneal nerve

Rationale :

🟣 The peroneal nerve (common fibular nerve) is most commonly affected in patients at risk for footdrop.

🟣 This nerve wraps superficially around the head of the fibula, making it highly vulnerable to compression during prolonged bedrest.

🟣 Compression or injury impairs dorsiflexion of the foot, leading to footdrop.

🟣 Patients may exhibit a high-stepping gait due to inability to lift the forefoot.

🟣 Preventive interventions include proper positioning, footboards, and avoiding pressure at the lateral knee.

❌ Sciatic nerve injury causes more extensive motor and sensory deficits of the posterior thigh and lower leg.

❌ It is not the most commonly compressed nerve leading specifically to footdrop in bedrest.

❌ Ulnar nerve injury affects the hand and causes numbness in the fourth and fifth fingers.

❌ It is unrelated to lower extremity motor control.

❌ Radial nerve injury leads to wrist drop, not footdrop.

❌ It affects the upper extremity, not the lower limb.

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Answer 4

Correct Answers:

Cloudy urine with white blood cells present

Rationale :

🔷 The presence of white blood cells (pyuria) in the urine is a hallmark sign of a urinary tract infection (UTI).

🔷 Cloudy urine often results from the accumulation of leukocytes, bacteria, and cellular debris.

🔷 A UTI typically produces positive findings such as leukocyte esterase and nitrites on urinalysis.

🔷 These findings correlate with inflammation and bacterial activity within the urinary tract.

🔷 In a patient reporting dysuria and frequency, pyuria strongly supports the diagnosis.

❌ A specific gravity of 1.010 is within normal range and does not indicate infection.

❌ Specific gravity reflects hydration status, not bacterial presence.

❌ Ketones in the urine are associated with starvation, uncontrolled diabetes, or metabolic conditions.

❌ They are not diagnostic of a urinary tract infection.

❌ Light yellow (straw-colored) urine is a normal finding.

❌ Urine color alone does not confirm infection.

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Answer 5

Correct Answers:

Stop the enema, remove the tube, and lay the patient flat

Rationale :

🔶 The patient is exhibiting signs of a vasovagal response, triggered by rectal stimulation during the enema.

🔶 Vagal stimulation increases parasympathetic tone, leading to severe bradycardia (pulse 40 bpm) and hypotension.

🔶 The priority is to immediately stop the stimulus causing the vagal reaction.

🔶 Removing the enema tube eliminates rectal stimulation and reduces further vagal activation.

🔶 Placing the patient flat improves cerebral perfusion and helps prevent syncope.

❌ Helping the patient stand up increases the risk of fainting and injury.

❌ Standing can worsen hypotension.

❌ Calling the provider and waiting delays immediate lifesaving intervention.

❌ The priority is to stop the vagal trigger first.

❌ Elevating the head of the bed may worsen cerebral hypoperfusion.

❌ The patient should be laid flat, not upright.

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Answer 6

Correct Answers:

Cyanosis

Rationale :

🫧 Cyanosis is a late sign because it usually appears only after significant oxygen desaturation has already occurred.

🫧 It reflects inadequate oxygenation of hemoglobin, causing a bluish discoloration of the lips, nail beds, or mucous membranes.

🫧 The body often shows neurologic and behavioral changes first (like restlessness) before skin color changes become obvious.

🫧 Cyanosis is especially concerning because it suggests advanced hypoxemia, not just early compensation.

🫧 By the time cyanosis is visible, the patient may already be near respiratory failure or severe oxygen deficit, requiring urgent intervention.

❌ Restlessness is typically an early sign of hypoxia due to decreased oxygen delivery to the brain.

❌ It often appears before major vital sign or skin color changes.

❌ Anxiety is an early response to low oxygen levels and rising distress.

❌ The patient may feel “air hunger” before objective late signs appear.

❌ Disorientation is a progressive neurologic sign, usually occurring after early restlessness/anxiety.

❌ It can occur before cyanosis and still represents worsening but not necessarily the latest sign.

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Answer 7

Correct Answers:

"The SCDs are worn to help push blood in my legs back to my heart to prevent clots."

Rationale :

🦵 SCDs work by applying intermittent compression to the legs, which mimics the natural pumping action of the calf muscles.

🦵 This improves venous return, helping blood move from the lower extremities back to the heart instead of pooling in the veins.

🦵 Venous pooling and immobility increase the risk of venous stasis, one of the key factors that contributes to DVT formation.

🦵 SCDs are especially important for patients who are post-op, hospitalized, or on bedrest, because movement is limited.

🦵 For best effectiveness, SCDs should be worn while in bed or sitting, and removed for ambulation—because walking already promotes circulation.

❌ “Keep my legs warm and comfortable” misidentifies the purpose; warmth is not the clinical goal.

❌ Even if they feel comfortable, their primary role is circulatory clot prevention.

❌ "The SCDs will be used all the time, even when I'm walking around."

SCDs are typically removed during ambulation. Walking itself promotes venous return and reduces clot risk naturally.

❌"The SCDs are only for comfort and will not affect blood flow in my legs."

SCDs directly affect circulation. Their purpose is specifically to enhance venous blood flow.

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Answer 8

Correct Answers:

Moves both crutches and the injured leg forward together, then swings the uninjured leg

Rationale :

🚶 The three-point gait is used when one leg is non–weight-bearing or partially weight-bearing, such as after injury or surgery.

🚶 In this gait pattern, the patient moves both crutches forward simultaneously with the injured leg, forming three contact points with the ground.

🚶 The patient then shifts weight to the crutches and swings the uninjured (strong) leg forward, allowing it to bear body weight.

🚶 This technique protects the injured extremity from excessive weight while maintaining balance and mobility.

🚶 Proper use reduces the risk of falls and ensures safe ambulation during recovery.

❌ Move the opposite crutch and foot together, then repeat with the other side

This describes a two-point gait pattern. It is used for partial weight-bearing on both legs.

❌ Move one crutch, then the opposite foot, then the other crutch, then the other foot

This pattern resembles a four-point gait. It is slower and provides maximum stability.

❌ Move both crutches forward, then swing both feet to the crutches

This describes a swing-through gait. It is commonly used with long-term crutch users.

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Answer 9

Correct Answers:

Respiratory acidosis

Rationale :

🫁 A pH of 7.30 indicates acidosis, as it is below the normal range of 7.35–7.45.

🫁 A PaCO₂ of 55 mm Hg is elevated above the normal range of 35–45 mm Hg, indicating carbon dioxide retention.

🫁 Because carbon dioxide is controlled by the respiratory system, an increase in PaCO₂ points to a respiratory cause.

🫁 The combination of low pH and high PaCO₂ confirms respiratory acidosis.

🫁 This condition commonly occurs in patients with hypoventilation, COPD, or respiratory depression.

❌ Metabolic alkalosis

Metabolic alkalosis would present with an elevated pH. Bicarbonate levels would also be increased.

❌ Metabolic acidosis

Metabolic acidosis is associated with low bicarbonate levels. PaCO₂ would typically be low if compensation occurs.

❌ Respiratory alkalosis

Respiratory alkalosis presents with a high pH and low PaCO₂. This is usually caused by hyperventilation

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Answer 10

Correct Answers:

Every 30 minutes

Rationale :

🪑 Patients seated in a wheelchair are at significant risk for pressure injuries because prolonged sitting places continuous pressure on the ischial tuberosities, sacrum, and posterior thighs.

🪑 Unlike patients in bed who are repositioned every 2 hours, wheelchair-bound patients require more frequent pressure relief due to concentrated weight-bearing on smaller surface areas.

🪑 Repositioning at least every 30 minutes helps restore capillary blood flow, preventing tissue ischemia and breakdown.

🪑 Frequent pressure redistribution reduces the risk of Stage I pressure injuries, which begin with non-blanchable erythema.

🪑 Preventive care through scheduled repositioning is a key component of maintaining skin integrity in high-risk patients.

❌Only as needed if discomfort is reported

Pressure injuries can develop before pain is felt. Waiting for discomfort delays prevention.

❌ Every hour

One hour is too long for wheelchair pressure relief. The standard recommendation is every 30 minutes.

❌ Every 2 hours

Two-hour repositioning applies to patients in bed. Wheelchair patients require more frequent repositioning.

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☑️Unit Exam 2-Compu Med Vocational Careers

No.

1 :
Nurse is teaching a group of older women about factors that increase the risk of urinary tract infections (UTIs). Which of the following explanations should the nurse include?

3 :
A nurse is caring for a patient on prolonged bedrest with a risk for footdrop. Which of the following nerves is most affected and at risk for injury?

4 :
A patient tells the nurse they have frequent and painful urination. Suspecting a urinary tract infection (UTI), which urinalysis findings would confirm the diagnosis?

5 :
A nurse is administering an enema when the patient suddenly becomes pale, sweaty, and dizzy. The patient’s pulse drops to 40 bpm. What is the nurse’s priority action?

6 :
A nurse is caring for a patient at risk for hypoxia. Which of the following findings is a late sign of hypoxia?

7 :
A nurse is teaching a patient about the use of sequential compression devices (SCDs). Which statement by the patient indicates correct understanding?

8 :
A nurse is teaching a patient how to use crutches with a three-point gait. Which of the following actions by the patient shows correct understanding?

9 :
A nurse is reviewing the arterial blood gas (ABG) results of a patient. The patient's pH is 7.30 and PaCO2 is 55 mm Hg. How should the nurse interpret these findings?

10 :
A nurse is caring for a patient at high risk for pressure injuries. How often should the nurse reposition the patient if the patient is in a wheelchair?

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☑️Unit Exam 2-Compu Med Vocational Careers

No.

1 : Nurse is teaching a group of older women about factors that increase the risk of urinary tract infections (UTIs). Which of the following explanations should the nurse include?

3 : A nurse is caring for a patient on prolonged bedrest with a risk for footdrop. Which of the following nerves is most affected and at risk for injury?

4 : A patient tells the nurse they have frequent and painful urination. Suspecting a urinary tract infection (UTI), which urinalysis findings would confirm the diagnosis?

5 : A nurse is administering an enema when the patient suddenly becomes pale, sweaty, and dizzy. The patient’s pulse drops to 40 bpm. What is the nurse’s priority action?

6 : A nurse is caring for a patient at risk for hypoxia. Which of the following findings is a late sign of hypoxia?

7 : A nurse is teaching a patient about the use of sequential compression devices (SCDs). Which statement by the patient indicates correct understanding?

8 : A nurse is teaching a patient how to use crutches with a three-point gait. Which of the following actions by the patient shows correct understanding?

9 : A nurse is reviewing the arterial blood gas (ABG) results of a patient. The patient's pH is 7.30 and PaCO2 is 55 mm Hg. How should the nurse interpret these findings?

10 : A nurse is caring for a patient at high risk for pressure injuries. How often should the nurse reposition the patient if the patient is in a wheelchair?

1 :
Nurse is teaching a group of older women about factors that increase the risk of urinary tract infections (UTIs). Which of the following explanations should the nurse include?

3 :
A nurse is caring for a patient on prolonged bedrest with a risk for footdrop. Which of the following nerves is most affected and at risk for injury?

4 :
A patient tells the nurse they have frequent and painful urination. Suspecting a urinary tract infection (UTI), which urinalysis findings would confirm the diagnosis?

5 :
A nurse is administering an enema when the patient suddenly becomes pale, sweaty, and dizzy. The patient’s pulse drops to 40 bpm. What is the nurse’s priority action?

6 :
A nurse is caring for a patient at risk for hypoxia. Which of the following findings is a late sign of hypoxia?

7 :
A nurse is teaching a patient about the use of sequential compression devices (SCDs). Which statement by the patient indicates correct understanding?

8 :
A nurse is teaching a patient how to use crutches with a three-point gait. Which of the following actions by the patient shows correct understanding?

9 :
A nurse is reviewing the arterial blood gas (ABG) results of a patient. The patient's pH is 7.30 and PaCO2 is 55 mm Hg. How should the nurse interpret these findings?

10 :
A nurse is caring for a patient at high risk for pressure injuries. How often should the nurse reposition the patient if the patient is in a wheelchair?