A Planning Playbook for Opening a New Orthopedic ASC
The ASC market continues its rapid growth. In 2023, roughly 116 new ASCs opened in the U.S., many of which were orthopedic-specific in nature....
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By: , Judy RN, BSN, Hedy Cohen
Published: 10/10/2007
Programmable patient-controlled analgesia (PCA) pumps work safely for the vast majority of patients, but medication errors can and do happen with these devices. Here are five strategies to help you purchase, prescribe, dispense, program and initiate these devices with patient safety in mind.
Select pumps with care
Programming a PCA requires several steps. Clinicians must separately program the
Some pumps lack a user-friendly, intuitive design, which can lead to an error during any of these steps. The most common - and sometimes fatal - programming errors happen when the concentration settings for opioid medications default to 0.1mg/mL or 1mg/ML, but a higher concentration is available and accidentally programmed by the clinician. There are also PCAs that don't require clinicians to review all programmed settings before infusion starts and pumps that program doses in mL, rather than mg, both of which may lead the clinician to overlook the amount of drug actually delivered.
Though quite rare, mechanical errors are possible. Free-flow errors caused by fractured glass syringes, which can entrain air into the body, have been reported. Free flow may also happen when a cassette breaks and detaches from a pump lacking anti-free-flow tubing.
Some common design flaws are related to the patient's use of the pump. First, many devices lack an auditory or visual feedback mechanism; if lockout intervals are set, patients might not be able to tell if their button pushing has had any effect. The result is that some patients press the button more frequently than they would if given proper feedback. Others become frustrated, give up and end up undertreating their pain. Another problem: The control button on some PCAs looks like the nurse-call button. Patients in PACU and hospital inpatient rooms can give themselves a medication spike when they want to call the nurse.
The FDA requires pump manufacturers to perform human-error testing in addition to delivery efficacy testing, but the former is loosely regulated and it's clear front-line practitioners and patients were not deeply involved in pre-market testing of many of these devices.
Before you buy a PCA pump, answer these questions:
Standardize pumps
Limit the number of different PCA pumps you use (see "Pain Pump Round Up" on page 56). If possible, obtain consensus on a single model the clinicians trust and stick with that device. This is desirable both from an economic and safety standpoint. Not only will you save time and money dealing with one distributor, using a single device facility-wide promotes programming proficiency, minimizes error potential and expedites the time clinicians need to correctly program the pump.
Establish PCA privileging
Take the time to teach nurses (and, in hospitals, pharmacists) how to program your pain pumps. Require clinicians who prescribe, dispense or initiate PCAs to undergo a privileging process; follow up yearly.
Train staff close to the time they'll actually use the pump. Mandate practice sessions to increase and maintain proficiency. Work with surgeons and anesthetists to design standard order sets to guide drug selection, doses, lockout periods and patient-monitoring protocols. Test personnel on these sets using the pump's programming sequence to reduce error risks.
Run simulations in which a selected clinician purposely writes an incomplete order, selects an incorrect drug or dose, makes a programming error, overlooks double-checking or forgets a critical monitoring point. See if the test-takers spot these. PCA-privileged nurses should also be able to recognize signs of opioid toxicity, assess patients with minimal verbal or tactile stimulation and distinguish between over-sedation and other complications; at minimum, they should evaluate the patient's pain level, alertness and vital signs (including respiration rate and quality).
Develop patient-selection protocols
Exercise caution before entrusting patients to manage pain with a PCA. Patients must have an appropriate level of consciousness and cognitive ability to operate a PCA; pediatric and confused adult (most commonly elderly) patients are contraindicated.
You may limit or heighten your monitoring requirements for patients at heightened respiratory depression risk, including obese patients, those with pre-existing conditions such as asthma or sleep apnea, and patients taking concomitant medications that potentiate opiates. Determine whether you can meet the increased monitoring level, including the availability of capnography or an overnight apnea alarm.
Conduct patient PCA education pre-operatively so you're not dealing with someone too groggy to understand instructions and ask questions. Warn the patient and family members that the devices are intended for the patient's use only. Reinforce this point by placing a "for patient use only" warning label on the pump's activation button. No device can guard against PCA-by-proxy (a third party pushing the button to deliver a mini-bolus), and oversedation and death have resulted from well-meaning family members (or staff) pushing the button for a patient who seems uncomfortable.
Follow medication and clinical best practices
The patient-controlled nature of PCA pumps heightens the imperative to establish good pharmacy and clinical initiation and monitoring standards. Create and adhere to a system of independent double-checks, even if it's for all settings. Follow these best practices:
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