A computer-controlled pump system through which the patient can self-administer pain medication at a pre-set safe dose using a button. It provides more consistent pain control.
Indication
- Acute pain control after major surgery (orthopedic, abdominal, thoracic)
- Cancer pain management
- Severe pain after trauma
- During painful dressing changes in burn treatment
- Postpartum analgesia
- Recurrent severe pain conditions such as sickle cell crises
Preparation
- The patient must be at a level of consciousness that allows them to use the device
- The use of the device is explained in detail to the patient and family; only the patient should press the button
- Known opioid allergy and kidney/liver functions are checked
- An IV access is in place and is of a quality that allows continuous use
How it's performed
- The PCA pump is programmed by an anesthesiologist with a bolus dose (e.g., 1 mg morphine), lockout interval (6-10 minutes), and 4-hour maximum dose
- The medication is connected via IV line or regional catheter (epidural)
- When the patient feels pain, they press the button; the device delivers the programmed dose
- If the button is pressed again within the lockout interval, no additional dose is delivered (overdose protection)
- Nurses monitor pain score, sedation, respiratory rate, and total consumption
- If insufficient, the program is updated; a continuous baseline infusion is added if necessary
Post-procedure
- Respiratory rate, oxygen saturation, and sedation level are regularly monitored
- Transition to oral pain relievers is planned as pain decreases
- PCA use is generally discontinued within 24-72 hours
- Supportive treatment is given for side effects such as nausea, constipation, and itching
Risks
- Respiratory depression (especially if someone other than the patient presses the button)
- Nausea, vomiting, constipation, and difficulty urinating
- Itching and drowsiness
- Insufficient pain control or, conversely, excessive sedation
- Device malfunction or pump lockout (rare)
FAQ
Can I overdose?
The device is programmed with lockout intervals and maximum dose limits; therefore, frequent button presses do not deliver additional doses and overdose is prevented.
Can a family member press the button?
Definitely not. Only the patient should press the button; pressing by others disables the safety mechanism and may lead to respiratory depression.
How long is it used?
Generally 24-72 hours; transition to oral medications is made when pain decreases. It may be used longer in cancer pain.
Does it cause addiction?
The risk of addiction is quite low with short-term in-hospital use; dose and duration are kept under control.
Related Information
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Spinal anesthesia — a regional anesthesia technique applied through the lower back to numb the lower half of the body.
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