Evaluation of outcome measures for post-operative dysphagia after anterior cervical discectomy and fusion.

PURPOSE: The goal is to conduct a review of the current literature to determine and evaluate the current classification metrics available for quantifying post-operative dysphagia. METHODS: We surveyed the literature for the subjective and objective measures used to classify dysphagia, and further described and analyzed them in the context of post-operative dysphagia (PD) after anterior cervical spine surgery, with a focus on anterior cervical discectomy and fusion (ACDF). We searched PubMed from the years 2005-2021 using the terms "anterior cervical discectomy and fusion" and "dysphagia or postoperative dysphagia." We included papers that were meta-analyses, systemic reviews, prospective, or retrospective studies. Our selection was further consolidated via abstract and title screening. Ultimately, nineteen articles were included and had full-text reviews. RESULTS: EAT-10 tool was shown to be more valid and reliable than the commonly used Bazaz grading system. HSS-DDI was found to have a high diagnostic accuracy in stratifying mild, moderate, and severe PD. A shortened 16-item version of the original 44-item SWAL-QOL was found to be statistically and clinically significant. When compared to PROMs, objective tests more accurately diagnose PD. CONCLUSION: We found that the most valuable subjective tests were the EAT-10 and HSS-DI because they are quick, sensitive, and correlated strongly with the well-established measurements of PD. The MBS and FEES provided accurate measurements of the severity of PD, but they required more time and equipment than the surveys. In some patient populations, such as those with pre-surgical dysphagia, objective testing should always be done.

Endothelial to mesenchymal cell transition in diabetic retinopathy: targets and therapeutics.

Diabetic retinopathy (DR) is a result of neurovacular insults from hyperglycemia in diabetes mellitus (DM), and it is one of the top causes of vision loss throughout the modern world. This review article explores the role endothelial to mesenchymal transition (EndMT) has on the pathogenesis of DR. EndMT contributes to the disruption of the blood-retinal barrier, vascular leakage, neovascularization, and fibrosis observed in DR. Risk factors and biomarkers associated with DR severity are discussed, highlighting the importance of early detection and targeted therapies. Current treatments primarily focus on anti-vascular endothelial growth factor (anti-VEGF) agents, corticosteroids, and laser photocoagulation. However, emerging therapeutic strategies aimed at inhibiting EndMT and its downstream effects show promise in preventing the development and progression of DR. Understanding the molecular and cellular mechanisms underlying EndMT in DR provides valuable insights into the disease process and offers potential options for the development of potential treatments.

Paradoxical Emboli as a Cause of Stroke.

Cerebrovascular embolic strokes are responsible for significant morbidity. 40% of strokes have no inciting cause and are thought to be the result of paradoxical emboli (PDE) passing into the arterial system by way of intra-cardiac or pulmonary vascular defects. We present two cases of PDE resulting in acute ischemic events. A 63-year-old female presented for evaluation of left upper extremity numbness. Imaging was significant for an acute right middle cerebral artery infarct and evidence of a large saddle pulmonary embolism. The patient's stroke was postulated to have been secondary to a patent foramen ovale (PFO). An 87-year-old male presented for evaluation of chest pain. The patient underwent three-vessel CABG and experienced an acute left hemispheric stroke post-operatively. Transthoracic echocardiogram demonstrated a biatrial thrombus transversing a PFO and was postulated to have been the cause. The prompt diagnosis of PDE is paramount to preventing the morbidity associated with repeat ischemic events.