Standardizing HIV post-exposure prophylaxis in the emergency department following sexual assault.

OBJECTIVES: A standardized non-occupational post-exposure prophylaxis (nPEP) programme was implemented to improve guideline compliance for treatment of post-sexual assault patients within an emergency department (ED). METHODS: A single-centre, retrospective, observational study of adult patients evaluated in the ED for sexual assault was performed following nPEP programme implementation. A comprehensive nPEP programme consisting of a standardized order set, real-time multidisciplinary consultation, on-site pharmacy and close post-discharge follow-up was implemented between July 2017 and June 2018. Laboratory, treatment, vaccination, prescription and follow-up data during the pre- (July 2016 to June 2017) and post-intervention (July 2018 to August 2019) periods were compared. RESULTS: Of the 147 post-sexual assault patients included in this study (59 pre-intervention, 88 post-intervention), 133 (90.5%) were eligible for nPEP. Patient demographics and rate of those eligible for nPEP were similar in both cohorts. Antiretroviral therapy (ART) was offered (72.2% vs. 100%; p < 0.005) and ultimately prescribed (51.9% vs. 86.1%; p < 0.005) more frequently following nPEP programme implementation. Patients were more likely to have appropriate screening for renal function, liver function, pregnancy, syphilis, hepatitis B, hepatitis C and HIV in the post-intervention period (all p < 0.005). Hepatitis B vaccination was more commonly administered post-intervention (8.5% vs. 22.7%; p < 0.024). In-person 28-day follow-up was rare in both pre- (3.5%) and post-intervention (11.3%) cohorts (p = 0.278). CONCLUSIONS: Implementation of a comprehensive nPEP programme resulted in improved guideline compliance with more frequent and appropriate ART administration. Recommended screening laboratories and hepatitis B vaccinations were more commonly performed, but in-person follow-up remained low. The nPEP programmes should be implemented to standardize efforts that decrease the risk of HIV transmission.

Early postoperative complications following tracheotomy: Does suturing technique influence outcomes?

Introduction: Tracheotomy is one of the most commonly performed procedure by otolaryngologists, but no consensus exists on the effect of suturing techniques on postoperative complications. Stay sutures and Bjork flaps are utilized frequently for securing the tracheal incision to the neck skin in order to create a tract for recannulation. Methods: Retrospective cohort study of tracheotomies performed by Otolaryngology-Head and Neck Surgery providers (May 2014 to August 2020) was conducted to determine the effect of suturing technique on postoperative complications and patient outcomes. Patient demographics, medical comorbidities, indication for tracheostomy, and postoperative complications were analyzed with a statistical alpha set of .05. Results: Out of 1395 total tracheostomies performed at our institution during the study period, 518 met inclusion criteria for this study. Three hundred and seventeen tracheostomies were secured by utilizing a Bjork flap, while 201 were secured with up and down stay sutures. Neither technique was noted to be more commonly associated with tracheal bleeding, infection, mucus plugging, pneumothorax, or false passage of the tracheostomy tube. One mortality was noted following decannulation during the study period. Conclusion: Though various techniques exist; adverse outcomes are not associated with the manner in which a new tracheostomy stoma is secured. Medical comorbidities and the indications for tracheostomy likely play a more significant role in postoperative outcomes and complications. Level of evidence: Level 3.

Hypertension in China: burdens, guidelines and policy responses: a state-of-the-art review.

Hypertension is a leading risk factor of cardiovascular disease and it is becoming increasingly prevalent globally. Correspondingly, the Chinese government and public health institutions have issued a series of policy documents and guidelines for hypertension. However, no comprehensive review of such documents has been conducted. Hence, this review aims to provide an up-to-date and comprehensive assessment of not only the disease burden, but also hypertension management policies and guidelines in China. A total of 15 epidemiological studies based on national population surveys, 15 Chinese Hypertension Guidelines, and seven policy documents were identified. We found a larger burden of hypertension in men, while the awareness, treatment, and control rates have remained low in both sexes. The ranges of hypertension prevalence, awareness, treatment, and control rate among hypertensive patients were 18.0-44.7%, 23.6-56.2%, 14.2-48.5%, and 4.2-30.1% respectively. Chinese hypertension guidelines provide evidence-based instructions to healthcare practitioners over hypertension management in which primary healthcare is increasingly emphasized. Finally, the policy documents set national goals for hypertension management and standardized the services provided in primary healthcare. The findings highlight the importance of integrating new guidelines into hypertension management provided by primary healthcare practitioners and the need to evaluate the implementation of guidelines and policies.

Model of an Advanced Practice Provider-Led Head and Neck Cancer Survivorship Clinic: Evaluation of a 4-Year Experience.

OBJECTIVE: To report the efficacy and safety of an advanced practice provider-led head and neck cancer survivorship clinic. STUDY DESIGN: Retrospective chart review. SETTING: Tertiary academic medical center. METHODS: Patients were enrolled into the survivorship clinic after undergoing 1-year follow-up with the primary head and neck surgeon. Those enrolled between December 2016 and October 2020 were retrospectively reviewed for diagnosis, staging, pattern of recurrence, visit frequency, and compliance. Surgical respectability of recurrent disease was used as a surrogate for timely diagnosis. RESULTS: An overall 570 patients were followed within the survivorship clinic. The mean length of follow-up was 13.6 months. Mucosal primaries represented 72.6% of patients. A majority of the primary malignancies were squamous cell carcinoma (77.7%). The most common primary subsites were the oropharynx (26.7%), oral cavity (25.1%), cutaneous (17.0%), and larynx (15.3%). Recurrence was detected in 50 patients (8.8%): 26 local, 12 regional, and 14 distant. Two patients had multiple synchronous recurrences. Twelve (2.1%) second primary cancers were detected. Of the 36 cases of locoregional recurrence, 32 (88.9%) were deemed amenable to salvage surgical intervention, with or without adjuvant therapy. Negative margins were obtained in 21 of the 23 (91.3%) local recurrences that underwent salvage resection. CONCLUSION: Advanced practice provider-based surveillance of head and neck cancer, without risk stratification, appears to be a sound model but needs further prospective evaluation. Consistent with literature, 88.9% of patients with locoregional recurrence were candidates for curative-intent salvage surgery, emphasizing that recurrences are identified in a timely fashion.

Accelerated Evolution of Cytochrome c in Higher Primates, and Regulation of the Reaction between Cytochrome c and Cytochrome Oxidase by Phosphorylation.

Cytochrome c (Cc) underwent accelerated evolution from the stem of the anthropoid primates to humans. Of the 11 amino acid changes that occurred from horse Cc to human Cc, five were at Cc residues near the binding site of the Cc:CcO complex. Single-point mutants of horse and human Cc were made at each of these positions. The Cc:CcO dissociation constant KD of the horse mutants decreased in the order: T89E > native horse Cc > V11I Cc > Q12M > D50A > A83V > native human. The largest effect was observed for the mutants at residue 50, where the horse Cc D50A mutant decreased KD from 28.4 to 11.8 µM, and the human Cc A50D increased KD from 4.7 to 15.7 µM. To investigate the role of Cc phosphorylation in regulating the reaction with CcO, phosphomimetic human Cc mutants were prepared. The Cc T28E, S47E, and Y48E mutants increased the dissociation rate constant kd, decreased the formation rate constant kf, and increased the equilibrium dissociation constant KD of the Cc:CcO complex. These studies indicate that phosphorylation of these residues plays an important role in regulating mitochondrial electron transport and membrane potential ΔΨ.