Skill 10-4 | Caring for a Patient Receiving Patient-Controlled Analgesia | ||||||||||||||||||||||||||||||||||||||||||||||||||||
Patient-controlled analgesia (PCA) allows patients to self-administer small doses of analgesic within a prescribed time interval, controlling the administration of their own medication within predetermined safety limits (Bauldoff et al., 2020). This approach can be used with oral analgesic agents as well as with infusions of opioid analgesic agents by intravenous, subcutaneous, sublingual, epidural, and perineural routes (Golembiewski et al., 2016; Katz et al., 2017). PCA provides effective individualized analgesia and comfort. This drug delivery system can be used to manage acute and chronic pain in a health care facility or the home, in a wide range of clinical situations (Nijland et al., 2019). The PCA system used to deliver an intravenous opioid analgesic permits the patient to self-administer medication (bolus doses) with episodes of increased pain or painful activities. A timing device electronically controls the PCA pump. The PCA system consists of a computerized, portable infusion pump containing a reservoir or chamber for a syringe or other reservoir that is prefilled with the prescribed medication, usually an opioid, or dilute anesthetic solution in the case of epidural administration (D'Arcy, 2013; Hinkle et al., 2022). When pain occurs, the patient pushes a button that activates the PCA device to deliver a small, preset bolus dose of the analgesic. A dose interval that is programmed into the PCA unit prevents reactivation of the pump and administration of another dose during that period of time (bolus; commonly 6 to 8 minutes). The pump mechanism can also be programmed to deliver only a specified amount of analgesic within a given time interval (basal rate; most commonly every hour or, occasionally, every 4 hours). These safeguards limit the risk for overmedication and allow the patient to evaluate the effect of the previous dose. PCA pumps also have a locked safety system that prohibits tampering with the device (Karch, 2020; Pasero & McCaffery, 2011). The proper selection of patients for PCA is vital for a safe, positive experience (Grissinger, 2019). Suitable candidates for this type of delivery system include people who are alert and capable of controlling the unit. The Institute for Safe Medication Practices (ISMP, 2016) identifies people for whom this type of pain relief is not recommended, including confused older adults, infants and very young children, cognitively impaired patients, patients with conditions for which oversedation poses a significant health risk (e.g., asthma and sleep apnea), and patients who are taking other medications that potentiate opioids. PCA has proven safe for use in developmentally normal children as young as 4 to 6 years of age (DiGiusto et al., 2014; Pasero & McCaffery, 2011). All patients should be assessed for level of risk of opioid-induced advancing sedation and respiratory depression; the plan of care and monitoring strategies should be driven by reassessment according to level of risk (Jungquist et al., 2020). Nursing responsibilities for patients receiving medications via a PCA system include collaboration with the health care team and the patient to ensure appropriate patient selection criteria, patient/family/caregiver teaching, knowledge of the appropriate drugs used with PCA, initial device setup, monitoring the device to ensure proper functioning, and frequent assessment of the patient's response, including pain and discomfort control, respiratory status and sedation screening, and presence of adverse effects (Gorski et al., 2021). Box 10-1 (on page 658) outlines guidelines for safe and effective use of PCA. Additional information related to epidural infusions is discussed in Skill 10-5. Delegation Considerations The care related to PCA is not delegated to assistive personnel (AP). Depending on the state's nurse practice act and the organization's policies and procedures, specific aspects of the care related to PCA, such as monitoring the infusion and assessment of patient response, may be delegated to licensed practical/vocational nurses (LPN/LVNs). The decision to delegate must be based on careful analysis of the patient's needs and circumstances as well as the qualifications of the person to whom the task is being delegated. Refer to the Delegation Guidelines in Appendix A. Equipment
Assessment Review the patient's health record and plan of care for specific instructions related to PCA therapy, including the prescribed intervention and conditions indicating the need for therapy. Check the health record for the prescribed drug, initial loading dose, dose for self-administration, and lockout interval. Check to ensure proper functioning of the unit. Assess the patient's level of consciousness and understanding of PCA therapy and the rationale for its use. Inquire about any allergies. Review the patient's history for conditions that might contraindicate therapy, such as respiratory limitations, history of substance abuse, or psychiatric disorder. Review the patient's health record and assess for factors contributing to an increased risk for adverse effects, such as the use of a continuous basal infusion, the patient's age (older age, infant [prematurity, developmental delay, underweight, age ;1 year]), morbid obesity, upper abdominal or thoracic surgery, known or suspected sleep disorder breathing problems, preexisting pulmonary and/or cardiac disease, renal insufficiency, impaired liver function, history of smoking, concurrent use of sedating medications (Gorski et al., 2021; Jungquist et al., 2020). Determine the prescribed route for administration. Inspect the site to be used for the infusion for signs of infiltration or infection. If the route is via an IV infusion, ensure that the access is patent, and the current solution is compatible with the drug ordered. Assess the patient's level of consciousness and vital signs. Assess the patient's pain and level of discomfort using an appropriate assessment tool and pain scale (refer to Fundamentals Review 10-1 through 10-4). Assess the characteristics of any pain, and for other symptoms that often occur with the pain, such as headache or restlessness. Ask the patient what interventions have and have not been successful in the past to promote comfort and relieve pain. Assess the patient's vital signs. Assess the patient's respiratory status, including rate, depth, and rhythm; oxygen saturation level using pulse oximetry; and level of carbon dioxide concentration using capnography. Assess the patient's sedation score (Table 10-1). Determine the patient's response to the intervention to evaluate effectiveness and for the presence of adverse effects. Actual or Potential Health Problems and Needs Many actual or potential health problems or issues may require the use of this skill as part of related interventions. An appropriate health problem or issue may include: Outcome Identification and Planning The expected outcome to achieve is that the patient reports increased comfort and/or decreased pain without adverse effects, oversedation, or respiratory depression. Other appropriate outcomes may include that the patient verbalizes an understanding of the reason of use of the therapy, the patient verbalizes and demonstrates an understanding of the use of the therapy, and the patient's family/caregiver verbalizes an understanding that the PCA is to be used only by the patient. Implementation
Evaluation The expected outcomes have been met when the patient reports increased comfort and/or decreased pain without adverse effects, oversedation, and respiratory depression; the patient displays an understanding of use of the therapy and the reason for its use; and the patient's family/caregiver verbalizes an understanding that the PCA is to be used only by the patient. Documentation Guidelines Document the date and time PCA therapy was initiated, initial assessments, drug and loading dose administered, if appropriate, and individual dosing and time interval. Document patient teaching and patient's response. Document continued pain, sedation level, vital signs and assessments, and patient's response to therapy. Sample Documentation 6/1/25 0645 Patient returned from surgery with PCA therapy with morphine sulfate 1 mg/mL in place via IV infusion. Device programmed to deliver 0.1 mg at 10-minute lockout intervals. Patient reports moderate to severe abdominal pain, rating pain as 6 to 8/10 on a pain-rating scale. Patient instructed to press PCA button for pain relief. Vital signs within acceptable parameters. Respiratory rate 16 breaths/min, regular rhythm and depth. Oxygen saturation 96%; partial pressure end-tidal CO2 (PetCO2) 36%. IV of 1,000 mL D5LR infusing at 100 mL/min; IV site clean and dry without evidence of infiltration or infection.Developing Clinical Reasoning and Clinical Judgment Unexpected Situations and Associated Interventions
Special Considerations General Considerations
Infant and Child Considerations
Community-Based Care Considerations
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