Publications by authors named "Mychajlo Kosyk"

Background: Reduction mammoplasty is popular among people of various age groups, yet the impact of age on postoperative outcomes remains debated.

Methods: The American College of Surgeons National Surgical Quality Improvement Program (2008-2021) was queried to identify adult female patients who underwent reduction mammoplasty. Patients were categorized into 10-year age brackets (i.

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Background: The existing diagnostic criteria for septic wrist are nonspecific, exposing patients with noninfectious etiologies to surgical morbidity. This study aimed to identify predictors differentiating septic wrist from other etiologies.

Methods: An institutional review board-approved retrospective review was conducted on patients with a presumed diagnosis of septic wrist (2003-2022).

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Purpose: Mandibular distraction osteogenesis (MDO) may improve airway grade in patients with Robin Sequence (RS), but little is known about the response of the oropharyngeal airway to the distraction process in cases of tongue base obstruction (TBAO). This study used drug-induced sleep endoscopy (DISE) to evaluate the impact of MDO on the oropharynx.

Methods: RS patients with severe obstructive sleep apnea (OSA) were prospectively enrolled, and underwent DISE prior to MDO, and at the time of distractor removal.

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Objective: To describe long-term outcomes and complications following mandibular distraction osteogenesis (MDO) in a diverse patient cohort.

Design: Cross-sectional study.

Setting: Single tertiary-care pediatric center.

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Background: Elevated intracranial pressure (ICP) in sagittal craniosynostosis has a wide spectrum of reported incidence, and patterns are not well understood across infancy and childhood. Characterizing the natural history of ICP in this population may clarify risks for neurocognitive delay and inform treatment decisions.

Methods: Infants and children with sagittal craniosynostosis and unaffected control subjects were prospectively evaluated with spectral-domain optical coherence tomography from 2014 to 2021.

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Background: Nasal airway obstruction is an increasingly recognized phenomenon in patients with cleft lip and/or palate and has the potential to significantly affect quality of life in this patient population. To date, the effect of secondary cleft rhinoplasty on cleft-related nasal airway obstruction has not been studied.

Methods: Patients undergoing secondary cleft rhinoplasty at the Children's Hospital of Philadelphia from 2015 to 2021 were identified.

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Background: The aim of this study was to compare midchildhood speech outcomes in patients with nonsyndromic Robin sequence with cleft palate (RSCP) treated with mandibular distraction osteogenesis (MDO) to patients with nonsyndromic Veau class I and Veau class II cleft palate (CP).

Methods: The authors performed a retrospective review of patients with nonsyndromic Robin sequence from 2000 to 2017, comparing those who underwent MDO to patients with nonsyndromic CP. Demographics, operative details, length of hospital stay, complications, and Pittsburgh Weighted Speech Scale scores were collected.

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Background: This study tested the core tenets of how facial scars are perceived by characterizing layperson response to faces with scars. The authors predicted that scars closer to highly viewed structures of the face (i.e.

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Background: The purpose of this study was to evaluate the epidemiology and perioperative complications of different reconstructive strategies to correct cleft nasal deformity, with particular attention paid to type and timing of cartilage grafting.

Methods: Retrospective cohort study was conducted of cleft rhinoplasty performed between 2012 and 2017 in North America utilizing the American College of Surgeons National Surgical Quality Improvement Program- Pediatric hospital network. Medical/surgical complications, reoperations, and readmissions within 30 days postoperatively were analyzed with appropriate statistics.

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Background: A larger volume cranial vault expansion is likely facilitated by a low posterior cranial osteotomy beneath the torcula; however, this may impart an increased risk of venous bleeding. The authors compared the safety of infratorcular versus supratorcular osteotomy in patients undergoing posterior vault reconstruction or posterior vault distraction osteogenesis and analyzed volumetric changes.

Methods: Patients undergoing initial posterior vault reconstruction or distraction osteogenesis between 2009 and 2021 at the authors' institution were grouped by occipital osteotomy location and analyzed retrospectively.

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Anterior cranial vault fronto-orbital distraction osteogenesis is a promising treatment modality for children with unicoronal craniosynostosis. A minimally invasive, endoscope-assisted approach offers the additional potential benefits of less scalp scarring, decreased blood loss, and decreased scalp dissection. In this article, the authors present a novel technique for minimally invasive, endoscope-assisted fronto-orbital distraction osteogenesis.

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Unlabelled: To analyze whether the choice of intraoperative local anesthetic for cleft lip repair is associated with the amount of perioperative narcotic utilization. Retrospective cohort study. Hospitals participating in the Pediatric Health Information System.

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The purpose of this study was to review our institution's experience using helmet molding therapy in children with isolated non-syndromic sagittal craniosynostosis before placement of cranial springs and provide objective measurements of craniometric changes to help determine its role in treatment.Patients who underwent preoperative helmet molding therapy for sagittal craniosynostosis were retrospectively reviewed. Three-dimensional surface tomography scans were used to measure head circumference, cranial width, cranial length, cranial index (CI), and cranial vault asymmetry.

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Mandibular distraction osteogenesis (MDO) and continuous positive airway pressure (CPAP) may each have a role in effectively treating tongue-based airway obstruction (TBAO) in Robin sequence (RS). This study describes longitudinal outcomes after treatment of TBAO with CPAP and/or MDO. Retrospective cohort study.

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Background: The purpose of this study was to investigate the financial implications of demographic and socioeconomic factors upon the cost of surgical procedures for craniosynostosis.

Methods: A retrospective cohort study was conducted of admissions for craniosynostosis surgery in the United States from 2015 through 2020 using the Pediatric Health Information System. Patient demographics, case volume, and surgical approach were analyzed in context of hospital charges.

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Background: Vertical expandable prosthetic titanium rib (VEPTR) devices were designed to treat childhood scoliosis and thoracic insufficiency syndrome. Although they have drastically reduced patient mortality, they present a profound subcutaneous hardware burden. The authors examined the surgical and nonsurgical factors associated with salvage of VEPTR hardware exposures.

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Although conventional posterior vault distraction osteogenesis is known to achieve the greatest improvement in intracranial volume, anteroposterior expansion of the cranial vault is not always ideal in certain head shapes. Transverse posterior vault distraction osteogenesis is an alternative reconstructive strategy in patients presenting with recalcitrant multisuture craniosynostosis resulting in scaphocephaly with posterior narrowing. The authors present a multimedia demonstration of placing the cranial hinge points at the superior anterior aspect of the bone segments in order to achieve increased intracranial volume and significant improvement in posterior head shape, while preserving normal anterior skull dimensions.

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Objective: The purpose of this study was to utilize a multicenter dataset to elucidate whether socioeconomic factors were associated with access to cleft lip surgery, treatment by higher-volume providers, and family choice for higher-volume centers.

Design: Retrospective cohort study.

Setting: Hospitals participating in the Pediatric Health Information System.

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Summary: Previous literature has documented craniometric changes of the bony calvaria, increases in intracranial volume, and resolution of Chiari malformations following posterior vault distraction osteogenesis. No studies have analyzed changes to the soft-tissue envelope after posterior vault distraction osteogenesis. In this study, the authors aimed to provide objective measurements of scalp thickness in patients undergoing posterior vault distraction osteogenesis, utilizing facial soft-tissue thickness as a proxy to control for growth.

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Maxillary hypoplasia is common in patients with cleft lip and palate (CL/P), and its etiology is incompletely understood. The purpose of this study is to evaluate facial suture patency in patients with CL/P and maxillary hypoplasia. The authors hypothesize that patients with CL/P will demonstrate higher rates of premature midfacial suture fusion in comparison to unaffected controls.

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Previous literature has documented changes in nasal obstruction after acute LeFort I osteotomy. However, there is a paucity of studies that evaluate distraction-mediated LeFort I (DO-LFI) without concomitant intranasal interventions using the nasal obstruction symptom evaluation (NOSE) scale in Class III patients. The purpose of this study is to objectively evaluate nasal obstruction quality of life through the NOSE scale in patients undergoing DO-LFI.

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Objective: To evaluate the timing and safety of cleft palate (CP) repair in patients with Robin sequence (RS) treated with mandibular distraction osteogenesis (MDO) or tongue-lip adhesion (TLA) for airway obstruction.

Design: Retrospective cohort study.

Setting: Tertiary Pediatric Hospital during 2004-2020.

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Introduction: Children who require submandibular gland excision for ptyalism often have multiple associated comorbidities, including neurodevelopmental disorders and respiratory risk factors. The purpose of this study is to utilize a large multicenter database to elucidate the perioperative profile of submandibular gland excision in children, with particular focus on children who require submandibular gland excision for ptyalism.

Methods: The American College of Surgeons National Surgical Quality Improvement Program Pediatric dataset was queried for submandibular gland excision performed from 2012 through 2018.

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Background: Patients with hemifacial microsomia (HFM) may undergo unilateral mandibular distraction osteogenesis (MDO) before skeletal maturity in an effort to improve facial symmetry. Mandibular distraction osteogenesis's effect on airway volumes have been studied in the past, though to our knowledge, none have accounted for the effect of head and neck posture on airway morphology. This study aimed to tackle this shortcoming, using imaging to analyze the upper airway of patients with HFM before and after surgical intervention with MDO.

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It is unknown if craniofacial trauma services are inequitably distributed throughout the US. The authors aimed to describe the geographical distribution of craniofacial trauma, surgeons, and training positions nationwide. State-level data were obtained on craniofacial trauma admissions, surgeons, training positions, population, and income for 2016 to 2017.

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