Outcomes analysis of microsurgical physiologic lymphatic procedures for the upper extremity from the United States National Surgical Quality Improvement Program

INTRODUCTION: Physiologic microsurgical procedures to treat lymphedema include vascularized lymph node transfer (VLNT) and lymphovenous bypass (LVB). The purpose of this study was to assess 30-day outcomes of VLNT and LVB using the National Surgical Quality Improvement Program (NSQIP) database. METHODS: NSQIP was queried (2012-2018) for lymphatic procedures for upper extremity lymphedema after mastectomy. Prophylactic lymphatic procedures and those for lower extremity lymphedema were excluded. Outcomes were assessed for three groups: LVB, VLNT, and patients who had procedures simultaneously (VLNA+LVB). Primary outcomes measured were operative time, 30-day morbidities, and hospital length of stay. RESULTS: The study included 199 patients who had LVB (n = 43), VLNT (n = 145), or VLNT+LVB (n = 11). There was no difference in co-morbidities between the groups (p = 0.26). 30-day complication rates including unplanned reoperation (6.9% VLNT vs. 2.3% LVB) and readmission (0.69% VLNT vs. none in LVB) were not statistically significant (p = 0.54). Surgical site infection, wound complications, deep vein thromboembolism, and cardiac arrest was also similar among the three groups. Postoperative length of stay for VLNT (2.5 days± 2.3), LVB (1.9 days± 1.9), and VLNT+LVB (2.8 days± 0.3) did not differ significantly (p = 0.20). Operative time for LVB (305.4 min ± 186.7), VLNT (254 min ± 164.4), and VLNT+LVB (295.3 min ± 43.2) was not significantly different (p = 0.21). CONCLUSIONS: Our analysis of the NSQIP data revealed that VLNT and LVB are procedures with no significant difference in perioperative morbidity. Our results support that choice of VLNT versus LVB can be justifiably made per the surgeon's preference and experience as the operations have similar complication rates

Virtual Interviews for the Independent Plastic Surgery Match: A Modern Convenience or a Modern Misrepresentation?

This article is made available for unrestricted research re-use and secondary analysis in any form or be any means with acknowledgement of the original source. These permissions are granted for the duration of the World Health Organization (WHO) declaration of COVID-19 as a global pandemic.Objective: The virtual interview for residency and fellowship applicants has previously been utilized preliminarily in their respective processes. The COVID-19 pandemic forced many programs to switch to a virtual interview process on short notice. In the independent plastic surgery process, which was underway when the pandemic started, applicants had a heterogeneous experience of in-person and virtual interviews. The purpose of this study was to assess if applicants prefer a virtual interview experience to an in-person interview as well as determine if virtual interview applicants had a different opinion of a program compared to the in-person interview applicants. Design/Setting/Participants: The 2019 to 2020 applicants who interviewed at the Indiana University Independent Plastic Surgery program were administered an anonymous online survey about their interview experience at our program. Results: Our survey response was 60% (18/30). The in-person interview group (n = 10) rated their overall interview experience higher than the virtual interview group (n = 8) 8.8 vs 7.5 (p = 0.0314). The in-person interview group felt they became more acquainted with the program, the faculty, and the residents more than the virtual group (4.7 vs 3.25, p < 0.0001) (4.3 vs 3.25, p = 0.0194) (4.3 vs 2.75, p < 0.0001). The majority of applicants favored in-person interviews (16/18, 88.9%). The in-person interview group spent significantly more money on their interview at our program compared to the virtual interview group ($587 vs$0, p < 0.0001). Conclusion: Our study demonstrated that the virtual interview process was an efficient process for applicants from both a financial and time perspective. However, the virtual interview process left applicants less satisfied with their interview experience. The applicants felt they did not become as acquainted with the program as their in-person counterparts. The virtual interview process may play a large role in residency and fellowship applications in the future, and programs should spend time on how to improve the process

Polyethylene glycol restores axonal conduction after corpus callosum transection

Polyethylene glycol (PEG) has been shown to restore axonal continuity after peripheral nerve transection in animal models. We hypothesized that PEG can also restore axonal continuity in the central nervous system. In this current experiment, coronal sectioning of the brains of Sprague-Dawley rats was performed after animal sacrifice. 3Brain high-resolution microelectrode arrays (MEA) were used to measure mean firing rate (MFR) and peak amplitude across the corpus callosum of the ex-vivo brain slices. The corpus callosum was subsequently transected and repeated measurements were performed. The cut ends of the corpus callosum were still apposite at this time. A PEG solution was applied to the injury site and repeated measurements were performed. MEA measurements showed that PEG was capable of restoring electrophysiology signaling after transection of central nerves. Before injury, the average MFRs at the ipsilateral, midline, and contralateral corpus callosum were 0.76, 0.66, and 0.65 spikes/second, respectively, and the average peak amplitudes were 69.79, 58.68, and 49.60 μV, respectively. After injury, the average MFRs were 0.71, 0.14, and 0.25 spikes/second, respectively and peak amplitudes were 52.11, 8.98, and 16.09 μV, respectively. After application of PEG, there were spikes in MFR and peak amplitude at the injury site and contralaterally. The average MFRs were 0.75, 0.55, and 0.47 spikes/second at the ipsilateral, midline, and contralateral corpus callosum, respectively and peak amplitudes were 59.44, 45.33, 40.02 μV, respectively. There were statistically differences in the average MFRs and peak amplitudes between the midline and non-midline corpus callosum groups (P < 0.01, P < 0.05). These findings suggest that PEG restores axonal conduction between severed central nerves, potentially representing axonal fusion

A novel technique using hydrophilic polymers to promote axonal fusion

The management of traumatic peripheral nerve injury remains a considerable concern for clinicians. With minimal innovations in surgical technique and a limited number of specialists trained to treat peripheral nerve injury, outcomes of surgical intervention have been unpredictable. The inability to manipulate the pathophysiology of nerve injury (i.e., Wallerian degeneration) has left scientists and clinicians depending on the slow and lengthy process of axonal regeneration (~1 mm/day). When axons are severed, the endings undergo calcium-mediated plasmalemmal sealing, which limits the ability of the axon to be primarily repaired. Polythethylene glycol (PEG) in combination with a bioengineered process overcomes the inability to fuse axons. The mechanism for PEG axonal fusion is not clearly understood, but multiple studies have shown that a providing a calcium-free environment is essential to the process known as PEG fusion. The proposed mechanism is PEG-induced lipid bilayer fusion by removing the hydration barrier surrounding the axolemma and reducing the activation energy required for membrane fusion to occur. This review highlights PEG fusion, its past and current studies, and future directions in PEG fusion

To spare or not to spare rib: A survey on internal mammary vessel preparation in microsurgical breast reconstruction

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Abstract

The Pahlavan Mahmud Mausoleum is the shrine of Khiva's patron saint, Pahlavan Mahmud, and the dynastic burial complex of the Qungrat Khans. The ensemble lies south of Khiva's famed Allah ad-Din tomb, near the Islam Khwaja Complex in the Ichan-Kala (inner fortress). It was built in the fourteenth century around the tomb of Pahlavan Mahmud, who is believed to be a gifted poet, soldier, furrier, professional wrestler and healer of diseases. The complex today consists of a domed monastic hall (khanqah), yard and gate pavilion (darvaza khana) along north-south axis, with a summer mosque, Quran reading rooms (qori khana), kitchen and other ancillary structures arranged on either side. Source: Archnetexterior, side view of the khanagah with adjacent tombs in the foreground and bench set up for photo opportunity, 200