Infraclavicular (IC) block is often performed by localizing one cord within the brachial plexus sheath and placing all the local anesthetic solution at that location. We hypothesized that posterior cord stimulation would be associated with a greater likelihood of IC block success. We enrolled 369 patients scheduled for surgery to the lower arm or hand in a prospective, nonrandomized observational trial. All underwent IC blocks using a standard technique, and the cord stimulated immediately before drug injection was recorded. Motor and sensory functioning were evaluated 15 min after injection. Compared with stimulation of either the lateral or medial cord, stimulation of the posterior cord was associated with rapid onset of motor block in significantly more nerves, as well as a decreased likelihood of block failure (motor and sensory block inadequate to perform surgery). Failure rates were 5.8% for posterior cord, 28.3% for lateral (P < 0.05), and 15.4% for medial (P < 0.05). The differences were highly significant when adjusted for multiple possible confounders, such as gender, body mass index, location of the incision, and level of training of the individual performing the block (P < 0.001, lateral versus posterior; P = 0.003, medial versus posterior). A low failure rate was also predicted by stimulation of more than one cord simultaneously (P < 0.05). We conclude that injection after locating the posterior cord or multiple cords predicts successful IC block.
Background:Palliative care (PC) is recommended for people with amytrophic lateral sclerosis (ALS), but there is scant literature about how to best provide this care. We describe the structure and impact of a pilot program that integrates longitudinal, interdisciplinary PC into the care of patients with ALS.Methods:Observational cohort study of patients with ALS referred to outpatient PC and seen for at least three PC visits October 2017-July 2020.Results:Fifty-five patients met inclusion criteria. Three-quarters (74.5%) were Caucasian and 78.2% spoke English. Patients were referred for advance care planning (58.2%), support for patient/family (52.7%), and symptoms other than pain (50.9%).Patients had a mean of five scheduled PC visits, the majority occurred by video. A PC physician, nurse, social worker, and chaplain addressed pain (for 43.6% of patients), non-pain symptoms (94.5%), psychosocial distress (78.2%), spiritual concerns (29.1%), care planning (96.4%), and supported family caregivers (96.4%).With PC, the rate of completion of advance directives increased from 16.4% to 36.4% (p=0.001) and Physician Orders for Life-Sustaining Treatment forms from 10.9% to 63.6% (p<0.001). Of the 27 patients who died, 77.8% used hospice, typically for more than 30 days. Eleven patients obtained aid-in-dying prescriptions and eight took these medications, accounting for 29.6% of the deaths.Conclusions:Integrating longitudinal, interdisciplinary PC into the care of patients with ALS is feasible, addresses needs in multiple domains, and is associated with increased rates of advance care planning. Controlled studies are needed to further elucidate the impact of PC on ALS patients, families, and clinicians.
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