Local anesthetic blockade of the genicular nerves, known targets of radiofrequency ablative techniques for knee pain, has not previously been studied in a randomized controlled trial evaluating acute pain after knee arthroplasty. We hypothesized that genicular nerve blockade added to an existing block regimen in total knee arthroplasty would result in a reduction in 24 hours opioid consumption.

Patients (American Society of Anesthesiologists 1-3, aged 18-85 years) undergoing primary total knee arthroplasty were randomized to receive single-injection nerve blocks of the superolateral, superomedial, and inferomedial genicular nerves with injectate (15 mL 0.25% bupivacaine and 2 mg dexamethasone or 15 mL saline placebo). All subjects received a standard oral analgesic regimen, spinal anesthetic with 12.5 mg isobaric bupivacaine, infiltration between the popliteal artery and capsule of the knee with 0.2% ropivacaine, and postoperative adductor canal perineural infusion with 0.2% ropivacaine. The primary outcome was 24 hours opioid consumption (measured in morphine milliequivalents).

Forty (40) subjects were enrolled. Opioid consumption at 24 hours was significantly lower in the BLOCK group compared with the SHAM group (23±20 vs 58±35, p<0.001), and this difference remained significant at 48 hours (50±40 vs 98±56, p=0.004). Pain scores were reduced in the BLOCK group at time 6 hours (2.6±1.9 vs 4.3±2.2, p=0.012), but were otherwise similar at remaining time points. Patient satisfaction at 24 hours and 20 m walk test times were similar between groups.

Genicular nerve blockade was associated with a reduction in opioid consumption at 24 hours in primary total knee arthroplasty patients.

NCT03706313.

NCT03706313.Experiences of substitute decision-makers with requests for consent to non-therapeutic research participation during the dying process, including to what degree such requests are perceived as burdensome, have not been well described. In this study, we explored the lived experiences of family members who consented to non-therapeutic research participation on behalf of an imminently dying patient.We interviewed 33 family members involved in surrogate research consent decisions for dying patients in intensive care. Non-therapeutic research involved continuous physiological monitoring of dying patients prior to and for 30 min following cessation of circulation. At some study centres participation involved installation of bedside computers. At one centre electroencephalogram monitoring was used with a subset of participants. Aside from additional monitoring, the research protocol did not involve deviations from usual end-of-life care.Thematic analysis of interviews suggests most family members did not perceive this minimal-risk, non-therapeutic study to affect their time with patients during the dying process, nor did they perceive research consent as an additional burden. In our analysis, consenting for participation in perimortem research offered families of the dying an opportunity to affirm the intrinsic value of patients’ lives and contributions. This opportunity may be particularly important for families of patients who consented to organ donation but did not proceed to organ retrieval.Our work supports concerns that traditional models of informed consent fail to account for possible benefits and harms of perimortem research to surviving families. Further research into consent models which integrate patient and family perspectives is needed.Decreasing unintended teenage pregnancy, especially repeat teenage pregnancy, is an important public health goal. Unfortunately, legal barriers in the USA impede this goal as all minors are unable to consent for birth control in 24 states, and only 10 of those states allow consent after the minor has given birth according to state statutory law. Placement of long-acting reversible contraception (LARC) is one of the most effective methods of preventing rapid repeat pregnancies. However, restrictions are placed on adolescents who may not have the option of parental consent if the parents are unwilling, or not present, to give consent. A predicament arises when healthcare professionals are willing to place the contraceptive for the patient, but cannot due to the restrictions and guidelines outlined by each state. Even though these adolescents are legally viewed as minors, adolescent mothers should be able to consent to the placement of LARC. Notably, adolescents have the legal ability to give consent for the healthcare of their child starting in the prenatal period. I argue that this ability should be extended to include adolescent consent for their own healthcare. Additionally, the procedure to place LARC is relatively low risk and highly effective, which is an opportune situation to allow minors to consent. Allowing adolescents to consent to LARC after delivery is a simple and effective way to decrease rapid repeat pregnancy rates in the USA.William Simkulet has recently criticised Colgrove et al’s defence against what they have called inconsistency arguments-arguments that claim opponents of abortion (OAs) act in ways inconsistent with their underlying beliefs about human fetuses (eg, that human fetuses are persons at conception). Colgrove et al presented three objections to inconsistency arguments, which Simkulet argues are unconvincing. Further, he maintains that OAs who hold that the fetus is a person at conception fail to act on important issues such as the plight of frozen embryos, poverty and spontaneous abortion. Thus, they are morally negligent. In response, we argue that Simkulet has targeted a very narrow group of OAs, and so his criticisms are inapplicable to most OAs. We then explain why his responses to each of Colgrove et al’s objections do not succeed, even for this restricted group. Finally, we note that Simkulet fails to provide evidence for his claims regarding OAs’ supposed failures to act, and we show that OAs veritably do invest resources into these important issues. We conclude that Colgrove et al’s reasons for rejecting inconsistency arguments (en masse) remain intact.The integrity of the patient-physician relationship depends on maintaining professional boundaries. While ethicists and professional organisations have devoted significant consideration to the subject of sexual boundary transgressions, the subject of non-sexual boundaries, especially outside the mental health setting, has been largely neglected. While professional organisations may offer guidance on specific subjects, such as accepting gifts or treating relatives, as well as general guidance on transparency and conflict of interest, what is missing is a principle-based method that providers can use to assess non-sexual interactions with patients that transcend norms of practice. This paper attempts to offer an operational model for such assessment that considers not only the traditional emphasis on beneficence, but also incorporates concerns over entanglement and concordance.Inadequate diet is the leading risk factor for morbidity and mortality worldwide. However, approaches to identifying inadequate diets in clinical practice remain inconsistent, and dietary interventions (on both individual and public health policy levels) frequently focus on facilitating 'healthy choices’, with limited emphasis on structural constraints. We examine the ethical implications of introducing a routine question in the medical history about ability to access food. Not collecting data on food security means that clinicians are unable to identify people who may benefit from support on an individual level, unable to consider relevant dietary risk factors for disease and disease progression and unable to monitor population trends and inequalities in dietary access in order to design effective policy interventions. We argue that the current lack of routine screening for food insecurity is inconsistent with our approach to other health behaviours (eg, smoking and alcohol use), as well as with doctors’ frequent informal role as gatekeepers to the food aid system, and recent calls for governmental action on food insecurity and health inequalities from individual clinicians and professional bodies. Potential ethical barriers to asking patients about food security are addressed, including concerns about stigma, limiting autonomy, fair resource allocation, unclear professional remits and clinicians’ ability to offer effective interventions. We suggest that there is an ethical imperative for doctors to ask patients about their ability to access healthy food. Gathering this data provides a valuable first step in re-framing the social determinants of health as modifiable risks, rather than inevitable inequities.Once common, therapeutic privilege-the practice whereby a physician withholds diagnostic or prognostic information from a patient intending to protect the patient-is now generally seen as unethical. However, instances of therapeutic privilege are common in some areas of clinical psychiatry. We describe therapeutic privilege in the context of borderline personality disorder, discuss the implications of diagnostic non-disclosure on integrated care and offer recommendations to promote diagnostic disclosure for this patient population.Although substantial progress has been made with Ebola virus (EBOV) vaccine measures, the immune correlates of vaccine-mediated protection remain uncertain. Here, five mucosal vaccine vectors based on human and avian paramyxoviruses provided nonhuman primates with varying degrees of protection, despite expressing the same EBOV glycoprotein (GP) immunogen. Each vaccine produced antibody responses that differed in Fc-mediated functions and isotype composition, as well as in magnitude and coverage toward GP and its conformational and linear epitopes. Differences in the degree of protection and comprehensive characterization of the response afforded the opportunity to identify which features and functions were elevated in survivors and could therefore serve as vaccine correlates of protection. Pairwise network correlation analysis of 139 immune- and vaccine-related parameters was performed to demonstrate relationships with survival. Total GP-specific antibodies, as measured by biolayer interferometry, but not neutralizing IgG or IgA titers, correlated with survival. Fc-mediated functions and the amount of receptor binding domain antibodies were associated with improved survival outcomes, alluding to the protective mechanisms of these vaccines. Therefore, functional qualities of the antibody response, particularly Fc-mediated effects and GP specificity, rather than simply magnitude of the response, appear central to vaccine-induced protection against EBOV. The heterogeneity of the response profile between the vaccines indicates that each vaccine likely exhibits its own protective signature and the requirements for an efficacious EBOV vaccine are complex.Hearing loss is one of the most common symptoms of neurofibromatosis type 2 (NF2) caused by vestibular schwannomas (VSs). Fibrosis in the VS tumor microenvironment (TME) is associated with hearing loss in patients with NF2. We hypothesized that reducing the fibrosis using losartan, an FDA-approved antihypertensive drug that blocks fibrotic and inflammatory signaling, could improve hearing. Using NF2 mouse models, we found that losartan treatment normalized the TME by (i) reducing neuroinflammatory IL-6/STAT3 signaling and preventing hearing loss, (ii) normalizing tumor vasculature and alleviating neuro-edema, and (iii) increasing oxygen delivery and enhancing efficacy of radiation therapy. In preparation to translate these exciting findings into the clinic, we used patient samples and data and demonstrated that IL-6/STAT3 signaling inversely associated with hearing function, that elevated production of tumor-derived IL-6 was associated with reduced viability of cochlear sensory cells and neurons in ex vivo organotypic cochlear cultures, and that patients receiving angiotensin receptor blockers have no progression in VS-induced hearing loss compared with patients on other or no antihypertensives based on a retrospective analysis of patients with VS and hypertension.