Central Nervous System Drugs, Part I: Meds for Pain

This set of flashcards covers essential concepts, mechanisms, and nursing implications related to central nervous system drugs used for pain management.

What are the learning objectives regarding local anesthetics?

Identify mechanisms of action, indications, adverse effects, and nursing implications.

What are the two main types of anesthetics?

Local anesthetics and general anesthetics.

What is nociceptive pain?

Pain caused by tissue damage.

What is neuropathic pain?

Pain caused by nerve injury.

What is the purpose of pain assessment?

Effective pain management through thorough assessment using standardized tools.

What scale is commonly used for pain assessment in children?

FACES pain scale.

How does the FLACC Pain Scale assess pain in non-verbal children?

Scores five categories: Face, Legs, Activity, Cry, and Consolability from 0 to 2.

What are potential routes of administration for local anesthetics?

Topical, injection, epidural, spinal, infiltration, nerve block.

What are the two main groups of local anesthetics?

Amides and ethers.

Give an example of an amide local anesthetic.

Lidocaine (Xylocaine).

What is the mechanism of action for lidocaine?

Blocks sodium channels, stopping action potential and impulse conduction.

What are the indications for lidocaine use?

Surface anesthesia and treatment of dysrhythmias.

What are some adverse effects of lidocaine?

CNS excitation, sedation, cardiac suppression, and vasodilation.

What drug interaction does lidocaine have?

Epinephrine extends the effect of lidocaine.

What is the primary goal of general anesthetics?

Produce lack of responsiveness to all painful stimuli and sensations.

Which drug is a common inhaled anesthetic?

Nitrous oxide.

What is the mechanism of action for isoflurane (Forane)?

High-potency anesthetic with weak analgesic property.

What are the common side effects of general anesthetics?

Post-operative nausea and vomiting.

What is the role of neuromuscular blocking agents in anesthesia?

Induce muscle relaxation and total paralysis during surgery.

What should be monitored during the use of neuromuscular blocking agents?

Ensure the patient has enough anesthesia.

What is malignant hyperthermia?

A fatal reaction that can occur due to certain anesthetics, particularly in genetically predisposed individuals.

What is the maximum dose for acetaminophen?

4 grams per day.

What are the two types of analgesics?

Opioid and non-opioid analgesics.

What is the mechanism of action for morphine?

Agonist that binds to opioid receptors to relieve pain.

What are common side effects of opioid agonists?

Respiratory depression, sedation, and constipation.

What is a crucial nursing responsibility when administering opioids?

Monitor respiratory rate before and after administration.

What differentiates tramadol from other opioids?

It is a weak agonist at mu-opioid receptors and inhibits norepinephrine and serotonin uptake.

What is the mechanism of action for non-steroidal anti-inflammatory drugs (NSAIDs)?

Inhibit cyclooxygenase to decrease synthesis of prostaglandins.

What is the primary indication for ibuprofen?

Pain relief and fever reduction.

Name a precaution when using acetaminophen.

Caution with combination medications that include acetaminophen.

What are common adverse effects of NSAIDs?

GI effects, bleeding, and renal impairment.

What is the general mechanism of action for COX-2 inhibitors?

Selectively inhibits cyclooxygenase 2, reducing pain and inflammation.

What is the primary role of naloxone in pain management?

Reverses effects of opioid agonists in cases of overdose.

What are the implications of aging on pain management?

Start low and slow with dosing, monitor for sensitivity to side effects.

What is the key to individualized pain management?

Comprehensive assessment, setting goals, and selecting appropriate interventions.

What is the significance of patient-controlled analgesia (PCA)?

Allows patients to manage their own pain relief.

How are behavioral indicators used in pain assessment for non-verbal patients?

Utilized to gauge pain levels and guide treatment.

What are signs of systemic toxicity from local anesthetics?

CNS and cardiovascular symptoms.

How is the effectiveness of a pain management plan evaluated?

Monitor and adjust as necessary based on patient feedback and outcomes.

What class of medication does hydromorphone belong to?

Strong opioid agonist.

What constitutes the nursing responsibilities during the administration of general anesthetics?

Monitoring patient vitals, maintaining airway patency, and managing postoperative pain.

What is the risk associated with combining NSAIDs and anticoagulants?

Increased risk of gastric bleeding.

What is the difference between first- and second-generation NSAIDs?

First-generation NSAIDs inhibit both COX-1 and COX-2; second-generation NSAIDs selectively inhibit COX-2.

What conditions can result from chronic NSAID use?

GI bleeding, renal impairment, and cardiovascular events.

What is the effect of opioids on the respiratory system?

Depression of respiratory drive.

How does the method of administration affect general anesthetics?

Different methods (inhalation, intravenous) can impact onset and duration.

What should clinicians be cautious of when dealing with opioid-naïve patients?

Risk of overdose and respiratory depression.

What is included in the assessment for pain management in pediatric patients?

Weight-based dosing and developmental considerations.

What is the role of multimodal therapy in pain management?

Minimizes opioid use and enhances pain relief.

What is essential for effective pain management in older adults?

Ongoing assessment and adjustments based on individual responses.

What should be documented during pain management interventions?

Administration site, patient responses, and any adverse effects encountered.

How does the body react to pain at a physiological level?

Pain signals travel from peripheral nociceptors to the brain.

What are behavioral signs of pain in advanced dementia patients?

Non-verbal cues such as grimacing, fidgeting, or changes in activity.

What implications arise from the use of opioids in patients with a history of substance abuse?

Increased risk for addiction and dependency.

What factors should be considered when prescribing analgesics to the geriatric population?

Polypharmacy and altered pharmacokinetics.

What are common non-pharmacologic interventions in pain management?

Therapies such as heat/cold application, physical therapy, and relaxation techniques.

How does the mechanism of action of acetaminophen differ from that of NSAIDs?

Acetaminophen inhibits prostaglandin synthesis in the CNS without anti-inflammatory effects.

What side effects should be monitored for when using acetaminophen?

Hepatic toxicity at high doses.

What is essential to ensure when utilizing general anesthetic techniques?

Verify informed consent and assess the patient's NPO status.

What must be done to avoid opioid overdose?

Monitor dose and patient response carefully.

What should patients undergoing surgery be educated about regarding post-operative pain?

They should understand pain management options available.

What signifies a successful pain management plan?

Improvement in patient-reported pain levels and functional ability.

When should NSAIDs be stopped prior to elective surgery?

One week before to reduce bleeding risks.

What nursing considerations should be addressed when monitoring patients on opioids?

Assess for signs of respiratory depression and sedation.

What are the implications for nursing education concerning pain management?

Educate patients about their pain management strategies and potential risks.

What effect does hydrocodone have compared to stronger opioids?

Hydrocodone has less potent analgesic effects than morphine.

What conditions are opposed to using acetaminophen in combination medications?

Liver disease and excessive alcohol use.

What aspects of pain should nurses advocate for in their patients?

Proper assessment, effective treatment, and patient education.

What baseline assessments are necessary before surgery?

Baseline vitals, psychosocial assessment, and NPO status verification.

What is a primary consideration in pain management for patients with cognitive impairment?

Use of clear communication and validated assessment scales.

What is a key component of managing complex pain in the geriatric population?

Adjusting medication dosages based on renal and hepatic function.