Machine learning for the localization of Subthalamic Nucleus during deep brain stimulation surgery: a systematic review and Meta-analysis.

INTRODUCTION: Delineating subthalamic nucleus (STN) boundaries using microelectrode recordings (MER) and trajectory history is a valuable resource for neurosurgeons, aiding in the accurate and efficient positioning of deep brain stimulation (DBS) electrodes within the STN. Here, we aimed to assess the application of artificial intelligence, specifically Hidden Markov Models (HMM), in the context of STN localization. METHODS: A comprehensive search strategy was employed, encompassing electronic databases, including PubMed, EuroPMC, and MEDLINE. This search strategy entailed a combination of controlled vocabulary (e.g., MeSH terms) and free-text keywords pertaining to "artificial intelligence," "machine learning," "deep learning," and "deep brain stimulation." Inclusion criteria were applied to studies reporting the utilization of HMM for predicting outcomes in DBS, based on structured patient-level health data, and published in the English language. RESULTS: This systematic review incorporated a total of 14 studies. Various machine learning compared wavelet feature to proposed features in diagnosing the STN, with the HMM yielding a diagnostic odds ratio (DOR) of 838.677 (95% CI: 203.309-3459.645). Similarly, the K-Nearest Neighbors (KNN) model produced parameter estimates, including a diagnostic odds ratio of 25.151 (95% CI: 12.270-51.555). Meanwhile, the support vector machine (SVM) model exhibited parameter estimates, with a DOR of 13.959 (95% CI: 10.436-18.671). CONCLUSIONS: MER data demonstrates significant variability in neural activity, with studies employing a wide range of methodologies. Machine learning plays a crucial role in aiding STN diagnosis, though its accuracy varies across different approaches.

Navigating the challenges: A case of iatrogenic cervical esophageal perforation following thyroid surgery.

INTRODUCTION: Iatrogenic cervical esophageal perforation (ICEP) represents a rare and challenging surgical complication that results in significant morbidity and mortality. This is a case report of a cervical esophageal fistula that resulted from an iatrogenic perforation following thyroid surgery, treated with surgical repair followed by negative pressure wound therapy (NPWT). PRESENTATION OF CASE: A 43-year-old female was presented with an infected post-total thyroidectomy and bilateral radical neck dissection two weeks prior. Esophagography revealed contrast leakage from the anterolateral aspect of the esophagus at the level of C7-T1. Surgical debridement exposed large (4 × 1 cm) esophageal damage. The esophageal repair was performed using a sternocleidomastoids flap reinforced with BioGlue® followed by placement of a feeding tube through a gastrostomy. Subsequent mucus leakage was observed two weeks after the repair. Conservative approach using NPWT was used to promote wound closure. Over a 3-week period, serial imaging demonstrated fistula closure and complete wound healing by 8 weeks. DISCUSSION: A delay in diagnosis and treatment for esophageal perforation leads to severe complications, highlighting the need for standardized treatment algorithms. Larger perforations illustrated in this case report require primary repair with muscle flaps. When reconstructive surgery fails, a follow-up conservative therapy utilizing proper NPWT was able to heal the leakage. CONCLUSION: This case report illustrates rare but devastating potential complications from a commonly performed oncologic surgery. The involvement of a multidisciplinary team from the very first identification of surgical complications is crucial for ensuring proper treatment.

Epidemiology, Management, and Outcomes of Large and Small Native Joint Septic Arthritis in Adults.

BACKGROUND: Native joint septic arthritis (NJSA) is poorly studied. We describe the epidemiology, treatment, and outcomes of large joint NJSA (LNJSA) and small joint NJSA (SNJSA) in adults at Middlemore Hospital, Auckland, New Zealand. METHODS: This was a coding-based retrospective study of patients ≥16 years old admitted between 2009 and 2014. Prosthetic joint infections were excluded. RESULTS: Five hundred forty-three NJSA episodes were included (302 LNJSA, 250 SNJSA). Only 40% had positive synovial fluid culture. Compared to SNJSA, LNJSA has higher incidence (13 vs 8/100 000 person-years [PY]), occurs in older, more comorbid patients, and is associated with greater rates of treatment failure (23% vs 12%) and mortality, despite longer antibiotic treatment. Total incidence is higher than previously reported (21/100 000 PY), with marked interethnic variation. Incidence rises with age (LNJSA only) and socioeconomic deprivation (LNJSA and SNJSA). Tobacco smokers and males are overrepresented. The most commonly involved joints were knee (21%) and hand interphalangeal (20%). Staphylococcus aureus was the most common pathogen (53%). Mean antibiotic duration was 25 days for SNJSA and 40 days for LNJSA, and the mean number of surgical procedures was 1.5 and 1.6, respectively. Treatment failure was independently associated with LNJSA, age, intra-articular nonarthroplasty prosthesis, and number of surgical procedures. CONCLUSIONS: This is the largest contemporary series of adult NJSA. SNJSA has better outcomes than LNJSA and may be able to be safely treated with shorter antimicrobial courses. Incidence is high, with significant ethnic and socioeconomic variation. Microbiological NJSA case ascertainment underestimates case numbers as it frequently excludes SNJSA.