Guideline-compliant adjuvant chemotherapy for resected high risk oral cavity cancer: Homefield advantage.

PURPOSE: Factors that are associated with failure to receive guideline-compliant adjuvant chemotherapy after resection of high-risk oral cavity cancer are understudied. Here, we performed a retrospective cohort study of surgically treated patients with oral cavity squamous cell carcinoma to determine rates of guideline-compliant adjuvant chemotherapy and to examine patient factors associated with receiving guideline-compliant chemotherapy. STUDY DESIGN: Retrospective cohort. SETTING: Two tertiary care referral centers. METHODS: Patients with resected high-risk oral cavity squamous cell carcinoma and known adjuvant therapy details were included. Extranodal extension or positive margins were considered high-risk features for which adjuvant chemoradiation was indicated. Patient factors were examined to determine associations with receiving on-guidelines treatment. Univariable and multivariable logistic regression were used to determine significance of associations. RESULTS: 75 patients were included. 36 (48 %) patients received guideline-compliant cisplatin. In total, 39 (52 %) patients did not receive guideline-compliant chemotherapy. On multivariable analysis, meeting with a university medical oncologist was significantly associated with the receipt of guideline-compliant cisplatin (OR 6.38, 95 % CI 2.26-20.0, p < 0.001). CONCLUSION: Adherence to on-guidelines treatment can be difficult to achieve in patients with advanced stage head and neck cancer. Meeting with university medical oncology is associated with an increased chance of receiving guideline-compliant chemotherapy.

Policy education in a research-focused doctoral nursing program: Power as knowing participation in change.

Nurses have moral obligations incurred by membership in the profession to participate knowingly in health policy advocacy. Many barriers have historically hindered nurses from realizing their potential to advance health policy. The contemporary political context sets additional challenges to policy work due to polarization and conflict. Nursing education can help nurses recognize their role in advancing health through political advocacy in a manner that is consistent with disciplinary knowledge and ethical responsibilities. In this paper, the authors describe an exemplar of Elizabeth Barrett's "Power as Knowing Participation in Change" theory as a disciplinary lens within a doctoral nursing health policy course. Barrett (radically) emphasizes "power as freedom" instead of "power as control." This approach is congruent with nursing disciplinary values and enhances awareness of personal freedom and building collaborative relationships in the policy process. The theory was used in concert with other traditional policy content and frameworks from nursing and other disciplines. We discuss the role of nursing ethics viewed as professional responsibility for policy action, an overview of Barrett's theory, and the design of the course. Four student reflections on how the course influenced their thinking about policy advocacy are included. While not specific to policymaking, Barrett's theory provides a disciplinary grounding to increase students' awareness of freedom and choices in political advocacy participation. Our experience suggests that Barrett's work can be fruitful for enhancing nurses' awareness of choices to participate in change across settings.

Differential Response to the Course of Cryptosporidium parvum Infection and Its Impact on Epithelial Integrity in Differentiated versus Undifferentiated Human Intestinal Enteroids.

Cryptosporidium is a leading cause of diarrhea and death in young children and untreated AIDS patients and causes waterborne outbreaks. Pathogenic mechanisms underlying diarrhea and intestinal dysfunction are poorly understood. We previously developed stem-cell derived human intestinal enteroid (HIE) models for Cryptosporidium parvum which we used in this study to investigate the course of infection and its effect on intestinal epithelial integrity. By immunofluorescence and confocal microscopy, there was robust infection of undifferentiated and differentiated HIEs in two and three-dimensional (2D, 3D) models. Infection of differentiated HIEs in the 2D model was greater than that of undifferentiated HIEs but lasted only for 3 days, whereas infection persisted for 21 days and resulted in completion of the life cycle in undifferentiated HIEs. Infection of undifferentiated HIE monolayers suggest that C. parvum infects LGR5+ stem cells. Transepithelial electrical resistance measurement of HIEs in the 2D model revealed that infection resulted in decreased epithelial integrity which persisted in differentiated HIEs but recovered in undifferentiated HIEs. Compromised epithelial integrity was reflected in disorganization of the tight and adherens junctions as visualized using the markers ZO-1 and E-cadherin, respectively. Quantitation using the image analysis tools Tight Junction Organizational Rate and Intercellular Junction Organization Quantification, measurement of monolayer height, and RNA transcripts of both proteins by quantitative reverse transcription PCR confirmed that disruption persisted in differentiated HIEs but recovered in undifferentiated HIEs. These models, which more accurately recapitulate human infection, will be useful tools to dissect pathogenic mechanisms underlying diarrhea and intestinal dysfunction in cryptosporidiosis.

Making explicit the development of PhD-prepared nurses to steward the discipline.

Leadership is a core curricular element of PhD programs in nursing. Our PhD faculty began a dialogue about being a leader, a steward of the discipline. We asked ourselves: (a) What expertise do PhD prepared nurse needs to begin to steward the discipline? (b) How do faculty engage PhD nursing students to assume responsibility for stewarding the discipline? Lastly, (c) How do we work with PhD nursing students to create their vision for how their work contributes to stewarding the discipline, from doctoral coursework throughout their career? We support the need for PhD graduates to have the skills to generate knowledge, conserve that which is important, and transform by disseminating new knowledge to a broad audience. Examples of nurses stewarding the discipline when pioneering research, critiquing traditional approaches to inquiry or trends in nursing practice, and developing policy, are highlighted along with examples of how PhD nursing students begin to steward the discipline.

Parabacteroides distasonis attenuates tumorigenesis, modulates inflammatory markers and promotes intestinal barrier integrity in azoxymethane-treated A/J mice.

Imbalance of the gut microbial community promotes inflammation and colorectal cancer (CRC). Previously, we demonstrated that freeze-dried Parabacteroides distasonis (Pd) suppressed obesity-driven colorectal tumorigenesis in mice. Here, we investigated if Pd could suppress the development of colon tumors in mice independent of obesity. Six-week-old male A/J mice were assigned to receive: (i) chow diet (CTR); (ii) chow with 0.04% wt/wt freeze-dried Pd (Pd-Early) or (iii) chow diet before switching to 0.04% Pd diet (Pd-Late). Mice remained on diet for 25 weeks with the switch for Pd-Late mice occurring after 19 weeks. All mice received 6 weekly injections of the colon carcinogen azoxymethane (AOM; 10 mg/kg I.P.) starting after 1 week on diet. Colon tumors were observed in 77, 55 and 40% in CTR, Pd-Early and Pd-Late mice, respectively (X2 = 0.047). Colonic expression of toll-like receptor 4, IL-4 and TNF-α was 40% (P < 0.01), 58% (P = 0.05) and 55% (P < 0.001) lower, respectively, in Pd-Early compared with CTR mice. Pd-Late mice displayed a 217% (P = 0.05) and 185% (P < 0.001) increase in colonic IL-10 and TGF-ß expression, respectively, compared with CTR mice and similar increases in protein abundances were detected (47-145%; P < 0.05). Pd-Early and Pd-Late mice both demonstrated increased colonic expression of the tight junction proteins Zonula occludens-1 (P < 0.001) and occludin (P < 0.001) at the transcript (2-3-fold; P < 0.01) and protein level (30-50%; P < 0.05) relative to CTR. Our results support a protective role for Pd in colonic tumorigenesis and maintenance of intestinal epithelial barrier in AOM-treated mice.

Ridinilazole, a narrow spectrum antibiotic for treatment of Clostridioides difficile infection, enhances preservation of microbiota-dependent bile acids.

Antibiotic treatment is a standard therapy for Clostridioides difficile infection, but dysbiosis of the gut microbiota due to antibiotic exposure is also a major risk factor for the disease. Following an initial episode of C. difficile infection, a relentless cycle of recurrence can occur, where persistent treatment-related dysbiosis predisposes the patient to subsequent relapse. This study uses a longitudinal study design to compare the effects of a narrow-spectrum (ridinilazole) or broad-spectrum antibiotic (vancomycin) on intestinal bile acid profiles and their associations with gut bacteria over the course of C. difficile infection treatment. At the end of treatment (day 10), subjects receiving vancomycin showed a nearly 100-fold increase in the ratio of conjugated to secondary bile acids in their stool compared with baseline, whereas subjects receiving ridinilazole maintained this ratio near baseline levels. Correlation analysis detected significant positive associations between secondary bile acids and several Bacteroidales and Clostridiales families. These families were depleted in the vancomycin group but preserved at near-baseline abundance in the ridinilazole group. Enterobacteriaceae, which expanded to a greater extent in the vancomycin group, correlated negatively and positively with secondary and conjugated primary bile acids, respectively. Bile acid ratios at the end of treatment were significantly different between those who recurred and those who did not. These results indicate that a narrow-spectrum antibiotic maintains an intestinal bile acid profile associated with a lowered risk of recurrence.NEW & NOTEWORTHY This is the first study to demonstrate in humans the relationships between Clostridioides difficile antibiotic treatment choice and bile acid metabolism both during therapy and after treatment cessation. The results show a microbiota- and metabolome-preserving property of a novel narrow-spectrum agent that correlates with the agent's favorable sustained clinical response rates compared with broad-spectrum antibiotic treatment.

Parabacteroides distasonis attenuates toll-like receptor 4 signaling and Akt activation and blocks colon tumor formation in high-fat diet-fed azoxymethane-treated mice.

Gut dysbiosis may play an etiological role in colorectal tumorigenesis. We previously observed that the abundance of Parabacteroides distasonis (Pd) in stool was inversely associated with intestinal tumor burden and IL-1ß concentrations in mice. Here, we assessed the anti-inflammatory capacity of Pd membrane fraction (PdMb) in colon cancer cell lines. In addition, we tested whether Pd could suppress colon tumorigenesis in mice. Six-week-old male A/J mice were fed a low-fat (LF) diet, high-fat (HF) diet or HF+ whole freeze-dried Pd (HF + Pd, 0.04% wt/wt) for 24 weeks. After 1 week on diet, mice received 4 weekly injections of azoxymethane. PdMb robustly suppressed the production of pro-inflammatory cytokines and lowered the abundance of MyD88 and pAkt (ser473) induced by E. coli lipopolysaccharide in colon cancer cell lines. Moreover, PdMb induced apoptosis in colon cancer cell lines and blocked TLR4 activation in a reporter line. Colon tumors were observed in 0% of LF (0 of 19), 25% of HF (5 of 20) and 0% of HF + Pd mice (0 of 20) (p = 0.005). The latter group also displayed a lower abundance of MyD88 and pAkt (ser473) in colonic mucosa than HF mice. Taken together, these data suggest that Pd has anti-inflammatory and anti-cancer properties that are likely mediated by the suppression of TLR4 and Akt signaling, as well as promotion of apoptosis. Further work is needed to confirm these findings in additional models and fully elaborate the mechanism of action.

Expanding horizons: Lonergan's philosophy as a guide to PhD program pedagogy.

Historically, research-focused doctoral programs in nursing have used the apprenticeship model to educate and prepare nurse scientists for research careers. The assumption is that students learn best when paired with a faculty member who is working on the same topic. This model works well when there is a stable workforce, adequate funding streams and sufficient faculty with diverse expertise to capture the enthusiasm and varied topics of incoming doctoral students. However, we believe there are alternative approaches that are worth exploring. We propose an alternative way of preparing students for entry into nursing science. The purpose of this paper is to describe one PhD program's new approach, based on the philosophical premises of Bernard Lonergan, to create a generation of creative, insightful thinkers who expand the horizons of the nursing discipline.

What we're trying to solve: the back and forth of engaged interdisciplinary inquiry.

Interdisciplinary research assumes that teams of highly specialized scientists develop new knowledge by bridging their respective horizons. Nurse educators preparing nursing doctoral students to conduct interdisciplinary research need insight into how members of interdisciplinary research teams experience knowledge horizons in these complex contexts. Based on the work of the philosopher Bernard Lonergan, this pilot study uses Transcendental Method for Research with Human Subjects to explore interdisciplinary researchers' experiences with and attitudes toward interdisciplinary research. Results reveal the overarching conceptual category of "engaged interdisciplinary inquiry" which includes six themes: (i) valuing interdisciplinary engagement; (ii) direct engagement; (iii) interior engagement; (iv) disengagement; (v) facilitated engagement and (vi) engaged researcher development. Results also suggest engagement depends on vigorous "back and forth", or dialogue, with self and others, and demonstrate the study method is fruitful for cognitive inquiry. This pilot supports expanded study to inform preparation for and conduct of interdisciplinary research involving nurses and raises important questions about how the trend toward interdisciplinary research affects nursing science.

Intestinal microbiota, microbial translocation, and systemic inflammation in chronic HIV infection.

BACKGROUND: Despite effective antiretroviral therapy (ART), patients with chronic human immunodeficiency virus (HIV) infection have increased microbial translocation and systemic inflammation. Alterations in the intestinal microbiota may play a role in microbial translocation and inflammation. METHODS: We profiled the fecal microbiota by pyrosequencing the gene encoding 16S ribosomal RNA (rRNA) and measured markers of microbial translocation and systemic inflammation in 21 patients who had chronic HIV infection and were receiving suppressive ART (cases) and 16 HIV-uninfected controls. RESULTS: The fecal microbial community composition was significantly different between cases and controls. The relative abundance of Proteobacteria, Gammaproteobacteria, Enterobacteriales, Enterobacteriaceae, Erysipelotrichi, Erysipelotrichales, Erysipelotrichaceae, and Barnesiella was significantly enriched in cases, whereas that of Rikenellaceae and Alistipes was depleted. The plasma soluble CD14 level (sCD14) was significantly higher and the endotoxin core immunoglobulin M (IgM) level lower in cases, compared with controls. There were significant positive correlations between the relative abundances of Enterobacteriales and Enterobacteriaceae and the sCD14 level; the relative abundances of Gammaproteobacteria, Enterobacteriales, and Enterobacteriaceae and the interleukin 1ß (IL-1ß) level; the relative abundances of Enterobacteriales and Enterobacteriaceae and the interferon γ level; and the relative abundances of Erysipelotrichi and Barnesiella and the TNF-α level. There were negative correlations between endotoxin core IgM and IL-1ß levels. CONCLUSIONS: Patients who have chronic HIV infection and are receiving suppressive ART display intestinal dysbiosis associated with increased microbial translocation and significant associations between specific taxa and markers of microbial translocation and systemic inflammation. This was an exploratory study, the findings of which need to be confirmed.

Childhood malnutrition and the intestinal microbiome.

Malnutrition contributes to almost half of all deaths in children under the age of 5 y, particularly those who live in resource-constrained areas. Those who survive frequently suffer from long-term sequelae including growth failure and neurodevelopmental impairment. Malnutrition is part of a vicious cycle of impaired immunity, recurrent infections, and worsening malnutrition. Recently, alterations in the gut microbiome have also been strongly implicated in childhood malnutrition. It has been suggested that malnutrition may delay the normal development of the gut microbiota in early childhood or force it toward an altered composition that lacks the required functions for healthy growth and/or increases the risk for intestinal inflammation. This review addresses our current understanding of the beneficial contributions of gut microbiota to human nutrition (and conversely the potential role of changes in that community to malnutrition), the process of acquiring an intestinal microbiome, potential influences of malnutrition on the developing microbiota, and the evidence directly linking alterations in the intestinal microbiome to childhood malnutrition. We review recent studies on the association between alterations in the intestinal microbiome and early childhood malnutrition and discuss them in the context of implications for intervention or prevention of the devastation caused by malnutrition.

Lonergan's philosophy as grounding for cross-disciplinary research.

Increasingly, nurses conduct scientific inquiry into complex health-care problems by collaborating on teams with researchers from other highly specialized fields. As cross-disciplinary research proliferates and becomes institutionalized globally, researchers will increasingly encounter the need to integrate their particular research perspectives within inquiries without sacrificing the potential contributions of their discipline-specific expertise. The work of the philosopher Bernard Lonergan (1904­1984) offers the necessary philosophical grounding. Here, I defend a role for philosophy in cross-disciplinary research and present selected ideas in Lonergan's work. These include: (1) a dynamic, normative pattern that each inquirer operates uniquely also forms the common core, or unity, in knowing; (2) the possibility of cross-disciplinary knowledge development is dependent on each researcher's consciousness of her or his attentiveness, intelligence, reasonableness, and responsibleness; and (3) shifts in researchers' viewpoints, or horizons, facilitate their collaborative inquiry and their grasp of the unity in knowing. The desire to know, shared by team members, drives their inquiry. Lonergan's stance is consistent with nursing values because it respects, but does not unconditionally privilege, any researcher or discipline. Arguments support a claim that Lonergan's perspective is well suited to guide nurse researchers participating on cross-disciplinary health research teams.

Survey of Laboratory Medicine's national response to the HSE cyberattack in the Republic of Ireland.

BACKGROUND: On Friday 14 May 2021, the Health Service Executive (HSE) was subjected to a serious cyberattack on their information technology (IT) infrastructure. Healthcare workers lost access to HSE-provided clinical and non-clinical IT systems, including laboratory systems. AIM: The aim of this national survey was to capture Laboratory Medicine's response across the Republic of Ireland during the HSE cyberattack. METHOD: An electronic survey developed using Microsoft Forms® was emailed on 24 September 2021 to 58 local representatives of the PeriAnalytic and Laboratory Medicine Society (PALMSoc). RESULTS: The survey was sent to 43 clinical laboratories across the Republic of Ireland. A total of 41 responses from 43 laboratories across all laboratory disciplines were received (95% response rate). From these, 55% did not have access to a functioning LIS, with 56% of these not having access to a LIS for greater than 2 weeks. A decrease in specimen requests received during this period was reported by 74% of laboratories, with 32% experiencing a reduction that lasted in excess of one month. Over half of the laboratories (55%) experienced a reduction of > 30% in requests, indicating that clinicians stopped investigating patients (87% reduction in primary care), further escalating the disruption to healthcare. CONCLUSION: The cyberattack burdened the HSE and laboratories at a time when healthcare staffs were coming to terms with the impact of the COVID-19 pandemic. Despite this, the survey confirms the agility of laboratory staff in meeting the demands placed on it during this time.

Unplanned Return to Hospital After Same Day Oral Cavity Resection: A Dual Institution Study.

OBJECTIVES: Primary objective: describe rates of 30-days unplanned readmission following outpatient resection of oral cavity cancer. Secondary objective: evaluate for patient and treatment factors associated with readmission. METHODS: Retrospective, dual-institution cohort study of 2 tertiary care referral centers involving adult patients undergoing resection of oral cavity cancer with plans for same-day discharge. Consecutive sample of 77 patients included. Primary outcome was unplanned readmission to emergency room or inpatient stay in the 30 days following surgery. Comparison testing was used between return and non-return groups. RESULTS: Among 77 patients treated with outpatient surgery for oral cavity cancer, 19 (25%) returned to the hospital within 30 days. Among the reasons for return, 16 (80%) were directly related to surgery, and 4 (20%) were related to perioperative medical complications not directly related to a surgical site. Among the 25 patients also undergoing sentinel lymph node biopsy with their oral cavity resection, none returned to the hospital for neck-related complications. While most patients could be safely observed and discharged after return to the hospital, 8 patients (10%) required inpatient readmission. No significant differences between return and non-return groups were identified, although there was a trend toward shorter driving distance from hospital for the return group (47.6 miles vs. 69.5 miles, P = 0.097). CONCLUSION: Unplanned return to the hospital following outpatient oral cavity resection is prevalent and primarily driven by postoperative primary resection site concerns. Among patients selected for same day discharge, no definite population at highest risk of unplanned return was identified.

Otolaryngology Applicant Perspectives on In-person and Virtual Residency Interviews.

OBJECTIVE: The objective of this study was to understand applicant perspectives on in-person and virtual otolaryngology residency interviews. STUDY DESIGN: Survey study. SETTING: Otolaryngology residency applicants who were interviewed during 2022-2023. METHODS: Survey sent to all otolaryngology residency applicants who interviewed during the 2022-2023 interview season. RESULTS: A total of 499 applicants were surveyed with 150 responses (30%). Approximately 48.3% of respondents were offered an in-person interview with 78.9% accepting the offer. Of those who did not accept, reasons included not wanting to travel (21.1%) and time conflicts (15.5%). When comparing virtual versus in-person interviews, those who attended virtual interviews were more likely to disagree that they connected with residents (P = .02) and that they had an improved perspective of the program (P = .002). The majority of applicants agreed that virtual interviews are more inclusive and equitable than in-person interviews (70.4%). When asked which interview style applicants would prefer, 63.1% of applicants preferred an in-person interview when compared to virtual with a second look option (29.5%) and virtual (7.4%). Respondents who self-identified as being underrepresented in medicine were less likely to choose in-person as their preferred interview format (P = .01) and were more likely to decline an in-person interview offer due to monetary limitations (P = .04). CONCLUSIONS: Applicants indicated dissatisfaction with connecting with residents and improving their perspective of the program when in a virtual setting. Applicants felt that virtual interviews were more equitable, but that if the barriers to equity were lessened then they would prefer in-person interviews.

Paragangliomas Arising From the Laryngeal Paraganglia: Thyroid and Laryngeal Paragangliomas With Radiology-Pathology Correlation.

Paragangliomas are neuroendocrine tumors that arise from the embryonic neural crest cells of the extra-adrenal chromaffin and non-chromaffin cellular system. Paragangliomas arising from the laryngeal paraganglia, which occur in the thyroid and larynx, are a rare subset of paragangliomas compared to the more common locations of the carotid body, vagale, jugular, and tympanic paragangliomas. The preoperative diagnosis of both thyroid and laryngeal paragangliomas may pose a challenge due to cytological, pathological, and imaging non-specificity that overlaps with many other neoplasms. These lesions may be associated with significant intraoperative bleeding and complicated excision with adherence to nearby structures, including the recurrent laryngeal nerve. This article discusses the imaging appearance, pathological features, clinical and operative considerations and manifestations, and management of head and neck paragangliomas, as seen in two patients at our institution.

Outcomes of Head and Neck Free Tissue Transfer in Renal Failure Patients.

OBJECTIVE: To assess if there is increased risk of free flap failure in renal failure patients undergoing head and neck reconstruction. We seek to primarily assess free flap outcomes based on stages of chronic kidney disease (CKD) and secondarily determine increased risk for postoperative complications. METHODS: Retrospective chart review was performed at five tertiary care centers. Patients were identified that had undergone microvascular free flap reconstruction of the head and neck with diagnosis of renal failure, classified as Stage 3 CKD or higher. Demographic data was collected. Outcomes in the postoperative period were examined. RESULTS: Seventy-three patients met inclusion criteria. The average patient age was 69 years with a male predominance (n = 48). The majority of patients had CKD Stage 3 (n = 52). Overall flap failure rate was 12.33% (n = 9, CKD stage 3 = 7.69%, CKD stage 4 = 30%, CKD stage 5 = 18%). There was an increased risk of flap failure on multivariate analysis for CKD stage 4/5 patients when compared to CKD 3 patients (p = 0.0095). When compared to matched controls, there was an increased risk of flap failure in CKD patients (p = 0.01) as well as an increased risk of overall complications (p < 0.0001). CONCLUSIONS: Patients with CKD undergoing head and neck reconstruction are at a higher risk of flap failure and overall complications. When comparing CKD stages there may be increased risk of flap failure in later stages of CKD compared to CKD 3. Appropriate patient counseling is recommended pre-operatively in this patient population with consideration for regional flaps in the appropriate patient. LEVEL OF EVIDENCE: 3 Laryngoscope, 134:688-694, 2024.

Microvascular reconstruction of midface osteoradionecrosis.

BACKGROUND: Head and neck osteoradionecrosis (ORN) of the midface requiring free flap (FF) reconstruction is uncommon. This multi-institutional study was designed to review outcomes for this rare patient population. METHODS: Retrospective multi-institutional review of FF reconstruction for midface ORN (2005-2022; n = 54). RESULTS: The FF survival rate was 87% (n = 54). Patients were less likely to be tolerating a regular diet at 3 months postoperative if they had a preoperative history of prior head and surgery (80% vs. 95%; p = 0.02), a pathologic fracture (50% vs. 90%; p = 0.04), exposed bone intraorally (43% vs. 94%; p = 0.002), or a fistula (67% vs. 96%; p = 0.03). Mean albumin was higher in patients whose FF survived (3.6 ± 0.5 vs. 2.7 ± 1.4; p = 0.03). Patients with low prealbumin were more likely to undergo a hematoma evacuation (27% vs. 0%; p = 0.02). CONCLUSION: In this series of midface ORN requiring FF reconstruction preoperative nutritional status impacted postoperative complications. Preoperative occurrence of a fistula, pathologic fracture, and intraoral bone exposure correlated with decreased tolerance of a regular diet following reconstruction.

Microvascular reconstruction of medication related osteonecrosis of the head and neck.

BACKGROUND: Medication related osteonecrosis of the jaw (MRONJ) requiring free flap (FF) reconstruction is uncommon with limited reported findings. METHODS: Multicenter, retrospective case series of 49 consecutive adult patients presenting with advanced MRONJ requiring FF reconstruction from 2010 to 2022. Perioperative complications and outcomes were analyzed. RESULTS: Eighty-two percent (n = 40) of cases were of the mandible and 18% (n = 9) were of the maxilla. The mean follow-up was 15 months (±19.6). The majority of FF survived (96%, n = 47). FF reconstructions of the maxilla were more likely to require postoperative debridement (56%, 95% CI [27, 81%] vs. 15%, 95% CI [7, 25%], p = 0.008) or develop intraoral bone exposure (56%, 95% CI [27, 81%] vs. 18%, 95% CI [9, 27%], p = 0.02). Most patients (71%, n = 35) received preoperative antibiotics which was associated with a higher rate of FF survival (100% vs. 86%, 95% CI [60, 96%], p = 0.02) and fewer complications. CONCLUSIONS: Patients undergoing FF reconstruction for MRONJ do well with high rates of FF success. MRONJ of the maxilla have a higher rate of some complications. Preoperative antibiotics correlated with higher FF survival and fewer postoperative complications.

Free flap reconstruction following head and neck trauma.

BACKGROUND: Free flap (FF) reconstruction of traumatic injuries to the head and neck is uncommon. METHODS: Multi-institutional retrospective case series of patients undergoing FF reconstruction for a traumatic injury (n = 103). RESULTS: Majority were gunshot wounds (GSW; 85%, n = 88) and motor vehicle accidents (11%, n = 11). Majority underwent osseous reconstruction (82%, n = 84). FF failures (9%, n = 9/103) occurred in GSW patients (100%, n = 9/9) and when multiple subsites were injured (89%, n = 8/9). Preoperative antibiotics correlated with lower rates of a neck washouts (4% vs. 19%) (p = 0.01) and 30-day readmissions (4% vs. 17%) (p = 0.02). CONCLUSIONS: All FF failures occurred in the setting of a GSW and the majority involved multiple subsites. Preoperative antibiotics correlated with lower rates of postoperative washout procedures and 30-day readmission.