Symptom management and skilled communication with patients and families are essential clinical services in the midst of the coronavirus disease 2019 pandemic. Although palliative care specialists have training in these skills, many frontline clinicians from other specialties do not. It is imperative that all clinicians responding to the coronavirus disease 2019 crisis have access to clinical tools to support symptom management and difficult patient and family communication.
Twelve methadone-maintained HIV-negative subjects were given saquinavir/ritonavir (SQV/rtv) 1600 mg/100 mg once daily for 14 days. Pharmacokinetic evaluations of total and unbound methadone enantiomers (R and S) were conducted before and after SQV/rtv. SQV/rtv was well tolerated, with no ACTG Grade 3-4 adverse events, no evidence of sedation, and no changes in methadone dose. For R-methadone (active isomer), C(max), AUC(0-24 h), and C(min) were unchanged, but percent unbound 4 hours after dosing was reduced by 12%. For S-methadone, no differences in pharmacokinetic parameters of total drug were seen, but unbound concentrations were reduced by 15% and 21% at 4 and 24 hours after dosing, respectively. SQV trough concentrations exceeded the anticipated EC(50) (50 ng/mL) in 10/12 subjects, persisting for at least 6 hours after the final dose in 4/6 subjects. Once-daily SQV/rtv in methadone-maintained subjects is safe and not associated with any clinically significant interaction with methadone during 14 days of concomitant administration.
CPNBs are a reasonably effective modality to decrease opioid usage when side effects are undesirable for end-of-life care. The risk of unfavorable coagulation status, poor lung function, and risk of infection was outweighed by the benefit in this patient population.
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