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2011, Anaesthesia and intensive care
AI
The evolution of patient-controlled analgesia (PCA) syringe pumps has significantly transformed pain management practices, especially in postoperative and labor settings. Historical developments highlight the transition from traditional methods of opioid administration to more sophisticated PCA devices, allowing patients to control their pain relief. Innovations ranging from the early hand-held demand systems to modern programmable devices have improved the safety, efficacy, and usability of analgesics, accommodating a variety of routes and patient needs.
Patient-Controlled Analgesia (PCA) has become accepted as an important means of self-regulated relief from post-surgical pain. In commonly used PCA systems, patients use a hand-held pushbutton to indicate the presence of pain and initiate a predetermined bolus of drug infusion. A disadvantage of this system is that no means is provided to accommodate variations in the intensity of pain or the sensitivity of the patient to the analgesic in use apart from the frequency of button pushing. A fixed rate background infusion is usually an option. A new adaptive PCA system is proposed to provide improved PCA through the use a variable background infusion, the provision for an extended high range of analgesic dosages and a novel handset which allows patients to rate their pain. The total system is under the control of an expert algorithm and is proposed to overcome some of the shortcomings of current systems. The specially designed handset allows patients to indicate a range of pain intensities and so vary the level of drug administration. Data derived from the handset signals provide a basis for the expert system to adapt the drug dosage to patient sensitivity as well as pain intensity. The variable background infusion is used to supplement analgesic requested by patients and is periodically adjusted by the expert algorithm. In addition an Oximeter provides direct monitoring of the patient and this safety measure allows for a wider range of adaptation under expert system control. Although clear superior pain relief from the adaptive system could not be statistically established for the small trial population, clinical trials on 20 patients at the Royal Melbourne Hospital have indicated that the system provides effective pain control and is well accepted by both patients and clinical staff.
Anaesthesia and Intensive Care, 1997
Henry Ford Hospital medical journal, 1986
Canadian Journal of Anaesthesia, 1987
Pain Management Nursing, 2007
Patient safety related to medication infusion devices has received considerable attention recently. Critical adverse patient outcomes have resulted from misprogrammed delivery devices, inherent flaws in device design, and human error. A key strategy to improving patient safety is the development of an interdisciplinary team in product selection and the inclusion of registered nurses in the process. Such a process would include salient elements of each professional viewpoint and consider product impact on practice. No formal product selection guidelines exist which consider patient safety. This article outlines the process undertaken at University Health Network in the selection of its most recent patient-controlled analgesia device. Various available products were excluded from the selection process based on the interdisciplinary review.
Pain research & management, 2017
Acute postoperative pain delays recovery and increases morbidity and mortality. Traditional administration of postoperative analgesics by nurses is often inefficient. The present study evaluated the safety, efficacy, and usability of a novel, patient-controlled analgesic dispenser, the PCoA Acute. A controlled pilot study was conducted at three medical centers. Patients scheduled for elective surgery were enrolled into two groups, both taking oral analgesics: a control group (= 43), opioids dispensed by nurses, and a test group (= 27), opioids dispensed via the PCoA Acute. Pill intake data were recorded. Pain ratings at rest and during movement were surveyed. No severe adverse events were recorded. Average pill intake time was reduced from 8 : 58 minutes in the control group to 1 : 17 minutes in the test group (value < 0.05). The test group took 67% more pills than the control group, indicating enhanced compliance. Pain scores were significantly lower for patients in the test gro...
Journal of Pain and Symptom Management, 1997
Anesthesiology and Pain Medicine, 2012
Journal of Advanced Nursing, 1997
2019
There is a growing expectation of physicians to treat acute pain more aggressively in the emergency department (ED). This has contributed to an increase in opiate prescribing practices that has resulted in a crisis of medication abuse and misuse. The resultant backlash against physicians has created a void within the realm of acute pain management, as physicians search for a means to treat their patients in a way that is both empathetic and responsible. In an effort to combat this growing epidemic, alternative means of pain control are being explored. Patientcontrolled analgesia devices (PCADs) have been used extensively in multiple fields of medicine and have demonstrated significant clinical utility for treating pain postoperatively; however there is a dearth of evidence to support their use within the acute care setting. Due to this lack of evidence, PCADs have not been widely implemented in the ED. Recent studies have shown that the use of PCADs may improve objective pain scores and increase both patient and nurse satisfaction while reducing the likelihood of developing chronic pain. The economic feasibility of this undertaking remains unclear; however there is strong evidence for the clinical utility of this modality to treat acute pain in this population.
IEEE Transactions on Information Technology in Biomedicine, 1999
A new adaptive patient-controlled analgesia (PCA) system designed to improve PCA through the use of a variable bolus dose and a variable background infusion is outlined here. The handset allows patients to rate their pain on a scale of 1-10. Data derived from the handset signals are used by an expert algorithm to repeatedly adapt the drug dosage of the bolus and the background infusion according to both pain intensity and patient response to previous dosages.
Drugs, 2006
self-administer predetermined doses of analgesic medication to relieve their pain. Since its introduction in the early 1980s, the daily management of postoperative pain has been extensively optimised. The use of PCA in hospitals has been increasing because of its proven advantages over conventional intramuscular injections. These include improved pain relief, greater patient satisfaction, less sedation and fewer postoperative complications.
Executive Summary In early 2013, for the very first time, a national survey of hospitals was conducted to determine practices around patient-controlled analgesia (PCA) pumps. With responses from hospitals from 40 states, the survey provides a baseline of information about (1) the practices and standards currently followed by hospitals in PCA administration; (2) the way hospitals view the role of technology in administration and monitoring of opioids; and (3) the technology, training and information healthcare providers think are important for greater patient safety in the future. On the negative side, there is a huge cause for concern for patient safety, as there is a great lack of consistency in safety procedures being followed by hospitals across the country. This most likely accounts for a large proportion of adverse events and deaths associated with PCA use. On the positive side, survey findings also show that adverse events have been averted or costs and expenses reduced by hos...
Pain Practice, 2008
Background: Intrathecal drug delivery using implantable pumps is an effective method to control stable chronic pain. However, the appropriate alleviation of unpredictable pain fluctuations remains challenging. A possible solution is the use of patient-controlled analgesia (PCA) by means of a specific device-the personal therapy manager (PTM)-designed to be used with implanted programable pumps. Methods: A multicenter (n = 17), open-label registry recording 168 patients suffering from chronic pain with unsatisfactory control of pain episodes was initiated. While 79 patients (47%) (group A) already carried an implanted pump at enrollment, all other patients were implanted after being registered in the study (group B). Parameters assessed included pain relief (visual analog score, VAS), quality of life (EQ-5D), patient and physician satisfaction, medication use, PTM programming parameters and adverse events. Final follow-up was at 12 months. Results: At 12 months, there was a significant reduction (29%) of the overall average VAS compared with baseline (P < 0.01) in patients with newly implanted devices (group B). All patients tended to decrease the concomitant pain medication and the quality of life tended to improve (10% on the EQ-5D scale). In total, 85% of patients were satisfied with the PTM. No serious adverse events related to the use of the PTM device were observed. Conclusions: Patient-controlled analgesia using a PTM with a programable, implantable pump system is an effective therapy for the treatment of chronic pain and allows patients to feel that they have more control over unpredictable pain fluctuations.
PharmacoEconomics, 1997
Patient-controlled analgesia (PCA) is the use of a portable infusion pump activated by the patient to inject an analgesic drug intravenously, subcutaneously or epidurally. PCA permits a patient to deliver a small bolus of opioid to achieve prompt relief without over sedation. Use of PCA for pain management is increasing in hospitals and home settings, largely because it can provide equivalent or better analgesia than conventional methods, and patients are more satisfied with its use. This article reports on studies published between January 1984 and December 1995 which considered cost aspects of PCA. Most studies compared the
American Journal of Health-System Pharmacy, 2007
Purpose. This article systematically characterizes aspects of all Food and Drug Administration Manufacturer and User Facility Device Experience (MAUDE) reports associated with i.v. patient-controlled analgesia (PCA) postoperative use during a two-year index period. Methods. Intravenous PCA represents a well-accepted and satisfactory means of acute pain treatment; case reports and large case series have described the occurrence of i.v. PCA-related adverse drug events (ADEs). MAUDE data files were downloaded, and all records pertaining to i.v. PCA devices were extracted for the twoyear period from January 1, 2002, through December 31, 2003. Medical device events were categorized by their reported cause, including patient-related event, device safety event, operator error, and adverse reactions to opioids. Because there was not suffi cient information to grade the certainty of each reported cause, all reported causes were graded "possible, " except for device safety events that were confi rmed on inspection by the manufacturer. Results. There were 2009 individual i.v. PCA-related MAUDE medical device events reported during the two-year period. Of these events, 1590 (79.1%) were classifi ed as possible device safety events, 131 (6.5%) as possible operator error, 25 (1.2%) as possible adverse reactions to opioids, 12 (0.6%) as possible patient-related events, and 235 (11.7%) as indeterminate. Conclusion. Manufacturer-confirmed device malfunction was a major cause of reported ADE with i.v. PCA infusion pumps while operator errors were more likely to be associated with more serious adverse outcomes than device safety problems. To reduce the incidence of these problems, potential vulnerabilities in the design and manufacture of i.v. PCA pumps must be identifi ed and addressed.
A new adaptive system has been designed to improve patient-controlled analgesia through the use of a variable bolus dose and a variable background infusion of analgesic. A novel hand set allows patients to rate their own pain on a linear scale of 1 to 10. Data derived from the hand set signals are used by an expert algorithm to repeatedly adapt the drug dosage of the bolus and of the background infusion according to both current pain intensity and the patient's response to previous dosage. To test the system, we performed a small pilot clinical study, using a randomized, double-blinded, cross-over design. The new system was alternated with a conventional system every 12 h. Use of the new system was associated with significantly lower pain scores and fewer bolus requests but more analgesic administration , though without increased adverse effects. It was very well accepted by both patients and clinical staff. Implications: Pain relief after surgery is often best provided by patient-controlled analgesia, which uses an IV infusion pump and a patient-activated switch. We have developed a new computer-controlled or " smart " patient-controlled analgesia that rapidly learns a patient's individual needs and provides continuously tailored pain relief.
Journal of Dental Anesthesia and Pain Medicine, 2016
Background: Control of postoperative pain is an important aspect of postoperative patient management. Among the methods of postoperative pain control, patient-controlled analgesia (PCA) has been the most commonly used. This study tested the convenience and safety of a PCA method in which the dose adjusted according to time. Methods: This study included 100 patients who had previously undergone orthognathic surgery, discectomy, or total hip arthroplasty, and wished to control their postoperative pain through PCA. In the test group (n = 50), the rate of infusion was changed over time, while in the control group (n = 50), drugs were administered at a fixed rate. Patients' pain scores on the visual analogue scale, number of rescue analgesic infusions, side effects, and patients' satisfaction with analgesia were compared between the two groups. Results: The patients and controls were matched for age, gender, height, weight, and body mass index. No significant difference in the mount of drug administered was found between the test and control groups at 0-24 h after the operation; however, a significant difference was observed at 24-48 h after the operation between the two groups. No difference was found in the postoperative pain score, number of side effects, and patient satisfaction between the two groups. Conclusions: Patient-controlled anesthesia administered at changing rates of infusion has similar numbers of side effects as infusion performed at a fixed rate; however, the former allows for efficient and safe management of postoperative pain even in small doses.
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