# A nurse is caring for a client who has been prescribed lorazepam (Ativan) for anxiety. Which assessment finding would be the priority concern requiring immediate nursing intervention?

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> language: ko  
> subject: Pharmacology

## 문제

A nurse is caring for a client who has been prescribed lorazepam (Ativan) for anxiety. Which assessment finding would be the priority concern requiring immediate nursing intervention?

## 보기

1. Client reports feeling drowsy and relaxed
2. Client is confused, disoriented, and has slurred speech **✔ 정답**
3. Client states they feel less anxious than before
4. Blood pressure decreased from 140/90 to 120/80 mmHg

**정답: 2**

## 해설

Respiratory rate of 8 breaths/min with shallow breathing indicates severe benzodiazepine-induced respiratory depression, the most critical safety concern requiring immediate intervention. Other findings (drowsiness, reduced anxiety, BP decrease) are expected or less urgent.

## 심화 해설

Core Nursing Explanation
**Key Concept Analysis**: This question assesses the nurse's ability to recognize signs of benzodiazepine toxicity or overdose, which is a critical safety priority. Lorazepam (Ativan) is a benzodiazepine that works by enhancing the effect of the inhibitory neurotransmitter GABA (gamma-aminobutyric acid). While it effectively reduces anxiety, its primary and most dangerous side effect is central nervous system (CNS) depression. This can progress from sedation to respiratory depression, coma, and death. The priority nursing assessment always focuses on the Key Point! **ABCs (Airway, Breathing, Circulation)**, with respiratory status being the most immediate threat to life with this drug class.

**Answer Rationale**: Option ②, "Client is confused, disoriented, and has slurred speech," is correct because these are classic signs of Watch out for confusion! **excessive CNS depression** and impending toxicity. Confusion and disorientation in a patient on a sedative-hypnotic are not typical therapeutic effects but red flags for over-sedation. Slurred speech is a neurological sign of significant impairment. This cluster of symptoms indicates the patient's condition is deteriorating beyond the intended therapeutic effect and requires immediate reassessment of vital signs (especially respiratory rate and depth), possible administration of the antidote flumazenil, and notification of the provider.

**Distractor Analysis**:

- **Option ① (Client reports feeling drowsy and relaxed)**: This is an **expected and common side effect** of lorazepam. Drowsiness and relaxation are part of its therapeutic action. While it requires monitoring for safety (e.g., fall risk), it is not an immediate priority for intervention unless it is severe or accompanied by respiratory depression.

- **Option ③ (Client states they feel less anxious than before)**: This indicates the medication is achieving its **desired therapeutic effect**. This is a positive outcome, not a concern.

- **Option ④ (Blood pressure decreased from 140/90 to 120/80 mmHg)**: A decrease in blood pressure can be a side effect of benzodiazepines due to their CNS depressant effects. However, a reading of 120/80 mmHg is within a normal range. This change from a pre-hypertensive state to a normal state is generally not alarming and would be monitored, but it does not represent an immediate threat like profound CNS depression.

**Related Concepts**: This question integrates pharmacology (benzodiazepine action), nursing assessment (prioritizing life-threatening complications), and the nursing process (evaluation of medication effectiveness and adverse effects). It tests the critical thinking skill of distinguishing between expected side effects and signs of toxicity.

Concept Summary

| Concept | Description | Nursing Implication |
| --- | --- | --- |
| Benzodiazepines (e.g., Lorazepam) | CNS depressants that enhance GABA. Used for anxiety, sedation, seizures. | Monitor for respiratory depression, sedation, fall risk. Assess for paradoxical reactions. |
| CNS Depression | Slowing of brain function. Signs: drowsiness, confusion, slurred speech, respiratory depression. | Priority is Airway, Breathing, Circulation (ABCs). Assess respiratory rate and depth first. |
| Flumazenil (Romazicon) | Benzodiazepine receptor antagonist. Reverses sedation/overdose. | Antidote for benzodiazepine overdose. Use with caution in patients with seizure history. |
| Therapeutic vs. Toxic Effect | Therapeutic: Reduced anxiety. Toxic: Excessive sedation, respiratory arrest. | Critical to differentiate. Confusion/disorientation = toxic. Drowsiness = expected side effect. |

Side-by-Side Comparison!

| Assessment Finding | Interpretation for a Patient on Lorazepam | Nursing Action Priority |
| --- | --- | --- |
| Drowsiness, relaxed feeling | Expected Side Effect / Therapeutic | Monitor, implement fall precautions. Low priority. |
| Confusion, disorientation, slurred speech | Sign of Toxicity / Excessive CNS Depression | HIGH PRIORITY. Assess ABCs, vitals, prepare for possible reversal. |
| Respiratory rate < 12 breaths/min, shallow | Life-Threatening Complication | IMMEDIATE INTERVENTION. Stimulate, administer oxygen, flumazenil, call rapid response. |
| Reduced anxiety | Desired Therapeutic Outcome | Document effectiveness. Continue monitoring. |

Anatomy, Physiology & Pharmacology Points

- **Mechanism of Action**: Benzodiazepines bind to GABA-A receptors in the brain, making the inhibitory neurotransmitter GABA more effective. This opens chloride channels, hyperpolarizing neurons and making them less likely to fire, resulting in sedation, anxiolysis, muscle relaxation, and anticonvulsant effects.

- **Primary Danger**: The same mechanism that calms anxiety can excessively depress the medulla oblongata (the brainstem's respiratory center), leading to hypoventilation and respiratory arrest.

- **Risk Factors for Toxicity**: Elderly patients, concurrent use of other CNS depressants (opioids, alcohol, barbiturates), liver dysfunction (impairs metabolism of lorazepam).

Memory Tips

- **Benzodiazepine "BADD" Effects**: Think of the dangerous side effects: **B**reathing depression, **A**taxia (unsteady gait), **D**rowsiness, **D**ependence.

- **Priority Mnemonic**: "**C**onfusion and **S**lurred speech = **C**all the provider **S**tat!" This helps remember that these neurological signs are urgent, not just common drowsiness.

- **Flumazenil Reminder**: "Flipping the switch off" on benzodiazepines.

High-Frequency NCLEX Topics
NCLEX loves to test **medication safety and prioritization**. Benzodiazepines are a classic example. Expect questions on:
1. Recognizing **signs of toxicity/overdose** (as in this question).
2. Prioritizing **airway and breathing** assessment for any CNS depressant.
3. Educating patients about **avoiding alcohol and other sedatives**.
4. Understanding the use of the **antidote flumazenil**.

Watch Out for Question Variations!

- **Shift from Symptom to Intervention**: "The nurse notes a client on lorazepam has a respiratory rate of 10/min and is difficult to arouse. Which action should the nurse take *first*?" (Answer: **Assess airway patency and breathing effectiveness**).

- **Shift to Patient Education**: "Which statement by a client prescribed lorazepam indicates a need for further teaching?" (Answer: "I can have a glass of wine in the evening to help me relax.").

- **Shift to Antidote Knowledge**: "A client is brought to the ED with suspected benzodiazepine overdose. The nurse prepares which medication as an antidote?" (Answer: **Flumazenil**).

## 임상 시나리오

Nursing Clinical Practice Guide
**Clinical Scenario**: You are a nurse on a medical-surgical unit. Mr. Johnson, a 68-year-old patient with a history of anxiety, received lorazepam 1 mg IV 30 minutes ago for preoperative anxiety. During your routine rounding, you find him slumped in bed, difficult to arouse. When you call his name, he mumbles incoherently with slurred words.

**Nursing Intervention Strategy**:
1.  **Immediate Assessment (ABCs)**:
*   **Airway**: Listen for snoring or gurgling indicating obstruction. Perform a head-tilt/chin-lift if needed.
*   **Breathing**: Count respiratory rate for a full minute. Is it < 12 breaths/min? Assess depth (shallow vs. deep). Use pulse oximetry.
*   **Circulation**: Check pulse (rate, rhythm), blood pressure, and skin color (looking for cyanosis).
2.  **Interventions**:
*   **Stimulate the Patient**: Call name loudly, gently shake shoulder. If no improvement in respiratory effort, this is an emergency.
*   **Call for Help**: Activate the rapid response team or call the provider immediately.
*   **Administer Oxygen** via nasal cannula or non-rebreather mask as ordered/per protocol.
*   **Prepare for Antidote Administration**: Have flumazenil available. Know that it is given IV in small, titrated doses to reverse sedation without precipitating acute withdrawal or seizures in dependent patients.
3.  **Ongoing Monitoring & Documentation**: Continuously monitor vital signs and level of consciousness (LOC). Document everything meticulously: time of assessment, specific findings (e.g., "respiratory rate 9/min, shallow, SpO2 92% on room air"), interventions taken, and provider notifications.

**Patient Safety and Precautions**:
*   **Contraindications/Cautions**: Lorazepam is contraindicated in patients with acute narrow-angle glaucoma, severe respiratory depression, or sleep apnea. Use with extreme caution in the elderly and those with liver disease.
*   **Medication Administration**: For IV administration, administer slowly (over 2-5 minutes) as per facility policy to minimize risk of respiratory depression and hypotension. Have resuscitation equipment readily available.
*   **Key Monitoring Points**: **Respiratory rate and depth are the #1 priority** after giving any benzodiazepine, especially via IV. Also monitor for paradoxical reactions (agitation, aggression) and fall risk due to drowsiness and ataxia.

Nursing Procedure & Medication Flow
**Administering Lorazepam (IV) - Key Steps & Safety**
1.  **Pre-Administration Assessment**: Check baseline vital signs, especially respiratory rate and LOC. Review for other CNS depressants on medication list.
2.  **Dilution & Administration**: Dilute IV lorazepam as directed. Administer **slowly** (e.g., 2 mg over 2 minutes). Rapid injection increases risk of apnea, hypotension, and cardiac arrest.
3.  **Post-Administration Monitoring**: Stay with the patient for several minutes. Monitor respirations closely for at least 30 minutes. Reassess LOC.
4.  **Fall Prevention**: Keep bed in low position, side rails up (per policy), and call light within reach. Instruct patient not to get out of bed without assistance.

A Word from Your Senior Nurse
"Nursing is not just about carrying out physician orders — it's about being the frontline guardian for your patients! In clinical practice, recognizing subtle changes in a patient's vital signs early can prevent deterioration. A patient who is just 'sleepy' from lorazepam is one thing; a patient who is confused and slurring words is on a dangerous path. Your assessment is the critical difference. When studying for your boards, don't just memorize 'lorazepam causes drowsiness' — connect it to the real-world scenario of checking respirations and knowing when to sound the alarm. That mindset will not only earn you a great score on the NCLEX but will make you a truly confident, professional nurse!"

## 핵심 개념

- **Benzodiazepines** — A class of psychoactive drugs that enhance the effect of the neurotransmitter GABA, leading to sedative, hypnotic, anxiolytic, anticonvulsant, and muscle relaxant properties.
- **CNS Depression** — A slowing of brain activity, which can result in symptoms ranging from drowsiness and lethargy to unresponsiveness, respiratory depression, and coma.
- **Flumazenil** — A competitive antagonist at the benzodiazepine binding site on the GABA-A receptor. It is the specific antidote used to reverse the sedative effects of benzodiazepine overdose.
- **Respiratory Depression** — A reduction in the rate or effectiveness of ventilation, characterized by a decreased respiratory rate and/or shallow breathing. It is the most serious potential adverse effect of benzodiazepines and opioids.
- **Paradoxical Reaction** — An unexpected and opposite response to a drug. With benzodiazepines, this can manifest as agitation, aggression, hyperactivity, or insomnia instead of the intended calming effect.

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