Publications by authors named "Lyahn Hwang"

Venous congestion is a frequent and challenging complication after re-attachment or replantation of avulsed tissues, body parts, and flaps. It is often the reason for failure. One of the successful therapies to prevent and/or treat venous congestion is the use of medicinal leeches.

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Background: Implant-based reconstruction remains the most common form of postmastectomy breast reconstruction. With ever-evolving device characteristics, including the advent of high-profile, cohesive, fifth-generation implants, the incidence of anterior-posterior flipping of implants is presenting a new challenge. Patient and device characteristics associated with this phenomenon have yet to be fully elucidated.

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Background: The standard of care of distal radius fractures requiring operative intervention involves restoration of anatomical alignment radiologically by comparing preoperative films and intraoperative fluoroscopy with established values based on population norms. The objective of this study is to evaluate the use of plain radiographs obtained from the uninjured wrist of patients who present with unilateral displaced distal radius fractures as a measure of successful achievement of anatomical realignment.

Methods: A retrospective review was performed on 133 consecutive patients who presented from August 2020 to August 2021 with a diagnosis of unilateral distal radius fracture as confirmed on 3-view plain radiography.

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Background: Physician-prescribed opioids have been implicated as key contributing factors in the current opioid epidemic in the United States. Breast reduction mammoplasty is one of the most commonly performed procedures in plastic surgery and patients are often prescribed large amounts of postoperative opioids. Here we investigate the effects of erector spinae nerve blocks on postoperative pain, opioid consumption, and quality of life after breast reduction.

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Purpose: Pain is a common side effect of intravenous injection of propofol. We conducted a randomized, prospective, single-blinded controlled trial to assess the efficacy of vibration analgesia on pain during propofol infusion in ambulatory surgery.

Methods: After institutional review board approval, 100 patients undergoing elective ambulatory surgery with general anesthesia were randomized into 2 groups.

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Introduction: Refrigerant sprays have been used for pain relief at the time of minor office procedures. However, their sterility remains in question. This study investigates the microbiologic effect of this vapocoolant when sprayed after 70 % isopropyl alcohol skin preparation.

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Introduction: Patients with syndromic causes of lipomatosis of the head and neck, although rare, often present late in the course of the disease in a myriad of ways, including concomitant airway obstruction, severe functional limitations, and/or significant cosmetic defects. The goal of this report was to review the literature and present a concise overview of the major syndromes causing lipomatosis of the head and neck.

Methods: A literature search was performed to gather information on syndromic lipomatosis of the head and neck region.

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Collagen is a major component of the extracellular matrix and plays a wide variety of important roles in blood clotting, healing, and tissue remodeling. Natural, animal derived, collagen is used in many clinical applications but concerns exist with respect to its role in inflammation, batch-to-batch variability, and possible disease transfection. Therefore, development of synthetic nanomaterials that can mimic the nanostructure and properties of natural collagen has been a heavily pursued goal in biomaterials.

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