Publications by authors named "Michael J Buys"

Background: Overprescription of opioids in the United States increases risks of opioid dependence, overdose, and death. Increased perioperative and postoperative opioid use during orthopedic shoulder surgery is a significant risk factor for long-term opioid dependence. The authors hypothesized that a multidisciplinary perioperative pain management program (Transitional Pain Service [TPS]) for major shoulder surgery would lead to a reduced amount of opioids required postoperatively.

View Article and Find Full Text PDF

Background: Opioid use disorder is a significant cause of morbidity, mortality, and health care costs. A transitional pain service (TPS) approach to perioperative pain management has been shown to reduce opioid use among patients undergoing orthopedic joint surgery. However, whether TPS also leads to lower health care use and costs is unknown.

View Article and Find Full Text PDF

Background: The USA provides medical services to its military veterans through Veterans Health Administration (VHA) medical centers. Passage of recent legislation has increased the number of veterans having VHA-paid orthopedic surgery at non-VHA facilities.

Methods: We conducted a retrospective cohort study among veterans who underwent orthopedic joint surgery paid for by the VHA either at the Salt Lake City VHA Medical Center (VAMC) or at non-VHA hospitals between January 2018 and December 2021.

View Article and Find Full Text PDF
Article Synopsis
  • Opioid tapering after surgery is advised for patients with chronic opioid use, but its impact on quality of life remains unclear.
  • A study conducted at a VA Medical Center examined 211 patients across various surgical procedures from 2018-2020, categorizing them into complete, partial, and no taper groups for opioids.
  • Results showed that those who did not taper had higher rates of opioid use disorder and were discharged on greater opioid dosages, with notable differences in pain interference and catastrophizing affecting overall quality of life.
View Article and Find Full Text PDF

Introduction: The Veterans Health Administration (VHA) is the largest healthcare network in the USA and has been a national leader in opioid safety for acute pain management. However, detailed information on the availability and characteristics of acute pain services within its facilities is lacking. We designed this project to assess the current state of acute pain services within the VHA.

View Article and Find Full Text PDF

Objectives: To compare opioid use patterns among Veterans who were discharged to a skilled care facility vs home after orthopedic surgery at a VA hospital.

Design: We conducted a retrospective cohort study of Veterans who had orthopedic surgery at the Salt Lake City VA Medical Center (VAMC) between January 2018 and December 2021 and were followed by a transitional pain service. The principal outcome of interest was the time to stop opioid use after discharge from the hospital.

View Article and Find Full Text PDF

Background: Preoperative chronic opioid use is common, but it is unclear whether complete opioid tapering can be achieved postoperatively without adversely affecting pain control and quality of life. This study was designed to assess the association between complete opioid tapering after surgery and patient-reported outcomes for pain intensity and pain interference.

Methods: We identified chronic opioid use patients undergoing a spectrum of nonemergency surgical procedures at a single Veterans Affairs medical institution between December 2017 and 2021.

View Article and Find Full Text PDF

Introduction: Understanding postoperative opioid use patterns among different populations is key to developing opioid stewardship programs.

Methods: We performed a retrospective cohort study on opioid prescribing, use, and pain after general surgery procedures for patients cared for by a transitional pain service at a veterans administration hospital. Discharge opioid prescription quantity, 90-day opioid prescription, and patient reported outcome pain measures were compared between chronic opioid users and non-opioid users (NOU).

View Article and Find Full Text PDF

Background: Overprescription of opioids after total joint arthroplasty (TJA) increases risks of opioid dependence, overdose, and death. The authors hypothesized that a multidisciplinary, perioperative pain management program (the Transitional Pain Service or TPS) for TJA would lead to fewer patients becoming opioid dependent.

Methods: A TPS was implemented at a Veterans Affairs Medical Center focused on nonopioid pain management, cessation support, and prospective data tracking.

View Article and Find Full Text PDF

Objective: To synthesize available evidence that has examined the relationship between physical therapy (PT) and opioid use. TYPE: Scoping Review LITERATURE SURVEY: Data sources including Google Scholar, Embase, PubMed, Cochrane Library, and CINAHL were searched for English articles up to October 24, 2019 using terms ("physical therapy"[Title/Abstract] OR physiotherapy[Title/Abstract] OR rehabilitation[Title/Abstract]) AND (opiate*[Title/Abstract] OR opioid*[Title/Abstract]).

Methodology: Included studies evaluated a PT intervention and reported an opioid-use outcome.

View Article and Find Full Text PDF

Background: For patients with existing chronic opioid use or a history of substance use disorder, often little presurgical planning or postsurgical coordination of care among surgeons, primary care providers, or addiction care providers occurs.

Methods: In 2018, we developed the Transitional Pain Service (TPS) to identify at-risk patients as soon as they were indicated for surgery, to allow time for evaluation, education, and developing an individualized pain plan, and opioid taper prior to surgery if indicated. An electronic dashboard registry of surgical episodes provided data to TPS providers and included baseline history, morphine equivalent daily dose, and patient-reported pain outcomes, using measures from the Patient-Reported Outcome Measurement System for pain intensity, pain interference, and physical function, and a pain-catastrophizing scale score.

View Article and Find Full Text PDF

In many countries, liberalisation of the legislation regulating the use of cannabis has outpaced rigorous scientific studies, and a growing number of patients presenting for surgery consume cannabis regularly. Research to date suggests that cannabis can impact perioperative outcomes. We present recommendations obtained using a modified Delphi method for the perioperative care of cannabis-using patients.

View Article and Find Full Text PDF

Background: Chronic postsurgical pain and opioid use is a problem among patients undergoing many types of surgical procedures. A multidisciplinary approach to perioperative pain management known as a transitional pain service (TPS) may lower these risks.

Methods: This retrospective cohort study was conducted at the Salt Lake City VA Medical Center to compare patients undergoing elective primary or revision total knee, hip, or shoulder replacement or rotator cuff repair in the year before (2017) and after (2018) implementation of a TPS.

View Article and Find Full Text PDF

We examined the interactive influence of the muscle reflex (MR) and the chemoreflex (CR) on the ventilatory response to exercise. Eleven healthy subjects (5 women/6 men) completed three bouts of constant-load single-leg knee-extension exercise in a control trial and an identical trial conducted with lumbar intrathecal fentanyl to attenuate neural feedback from lower-limb group III/IV muscle afferents. The exercise during the two trials was performed while breathing ambient air ([Formula: see text] ~97%, [Formula: see text]~84 mmHg, [Formula: see text] ~32 mmHg, pH ~7.

View Article and Find Full Text PDF

Key Points: Although the exercise pressor reflex (EPR) and the chemoreflex (CR) are recognized for their sympathoexcitatory effect, the cardiovascular implication of their interaction remains elusive. We quantified the individual and interactive cardiovascular consequences of these reflexes during exercise and revealed various modes of interaction. The EPR and hypoxia-induced CR interaction is hyper-additive for blood pressure and heart rate (responses during co-activation of the two reflexes are greater than the summation of the responses evoked by each reflex) and hypo-additive for peripheral haemodynamics (responses during co-activation of the reflexes are smaller than the summated responses).

View Article and Find Full Text PDF

Audiovisual distraction (AVD) has been used to augment or replace procedural sedation. We investigated whether AVD in patients having total hip (THA) or total knee arthroplasty (TKA) under spinal anesthesia would reduce self-administered propofol consumption during surgery. 50 participants were randomized equally into a patient-controlled sedation (PCS) group or AVD group.

View Article and Find Full Text PDF

We investigated the impact of hypertension on circulatory responses to exercise and the role of the exercise pressor reflex in determining the cardiovascular abnormalities characterizing patients with hypertension. After a 7-day drug washout, 8 hypertensive (mean arterial pressure [MAP] 130±4 mm Hg; 65±3 years) and 8 normotensive (MAP 117±2 mm Hg; 65±2 years) individuals performed single-leg knee-extensor exercise (7 W, 15 W, 50%, 80%-W) under control conditions and with lumbar intrathecal fentanyl impairing feedback from µ-opioid receptor-sensitive leg muscle afferents. Femoral artery blood flow (Q), MAP (femoral artery), leg vascular conductance, and changes in cardiac output were continuously measured.

View Article and Find Full Text PDF

We sought to investigate the role of group III/IV muscle afferents in limiting endurance exercise performance, independently of their role in optimizing locomotor muscle O delivery. While breathing 100% O to ensure a similar arterial O content ([Formula: see text]) in both trials, eight male cyclists performed 5-km time trials under control conditions (H) and with lumbar intrathecal fentanyl (H) impairing neural feedback from the lower limbs. After each time trial, common femoral artery blood flow (FBF) was quantified (Doppler ultrasound) during constant-load cycling performed at the average power of the preceding time trial.

View Article and Find Full Text PDF
Article Synopsis
  • The study investigates the safety of combining local infiltration analgesia (LIA) with a peripheral nerve block during total knee arthroplasty (TKA), focusing on serum ropivacaine levels to avoid toxicity.
  • A total of 14 patients were included, with 7 receiving LIA alone and 7 receiving LIA plus an adductor canal block (ACB), and ropivacaine levels were measured over 24 hours.
  • Results showed that serum ropivacaine concentrations remained well below the toxicity threshold, suggesting that the combination of LIA and ACB is safe, but further research is necessary for definitive conclusions.*
View Article and Find Full Text PDF

Hematoma formation after peripheral nerve block placement is a rare event. We report a case of a morbidly obese patient who was anticoagulated with apixaban and developed a massive thigh hematoma after an ultrasound-guided adductor canal block. Despite continuous visualization of the block needle, an unrecognized vascular injury occurred leading to a 14-cm hematoma in the anterolateral thigh.

View Article and Find Full Text PDF

Background And Objectives: A relatively new technique to reduce postoperative pain for total knee arthroplasty is to inject a mixture of 266 mg of liposomal bupivacaine and 125 mg of 0.25% bupivacaine HCl with epinephrine 1:300,000 around the knee joint at the time of surgery. Currently, no publications report serum bupivacaine concentrations over time after periarticular injection of liposomal mixed with free bupivacaine.

View Article and Find Full Text PDF

Background: The anticonvulsant drugs pregabalin and gabapentin are often used systemically to treat some forms of chronic neuropathic pain. However, many patients report side effects serious enough to cause discontinuation of the drug. Here we present evidence that pregabalin may block neuropathic pain when applied to the site of nerve injury in a rat neuropathic pain model.

View Article and Find Full Text PDF

Background: We hypothesized that blocking the tibial and common peroneal nerves individually using ultrasound distal to sciatic bifurcation would decrease time to complete block compared with a block proximal to the bifurcation.

Methods: Seventy-six patients undergoing foot or ankle surgery received a sciatic nerve block either proximal or distal to the point of bifurcation. A mixture of 28 mL 1.

View Article and Find Full Text PDF