The Role of Reconstruction on Desmoid Tumor Recurrence: A Systematic Review and Technical Considerations.

BACKGROUND: Desmoid tumors occur throughout the body, presenting as aggressive, locally invasive lesions that can impede quality of life. Many controversies remain regarding the optimal surgical treatment of desmoid. This article presents a systematic review and meta-analysis on surgical management, focusing on risk of recurrence and the utility of reconstruction within this unique patient population. METHODS: A systematic review was conducted to search for articles. The clinical course of patients diagnosed with desmoid tumors and treated by our institution's multidisciplinary team was retrospectively reviewed over a 13-year period. Meta-analysis study findings were compared with our cohort. RESULTS: From the systematic review, 10 studies with level of evidence III were found, which resulted in 981 patients. Twenty patients from our institution met the inclusion criteria for our study. In both our study cohort and the pooled results, recurrence was significantly higher in patients with positive microscopic margin after resection. In our study cohort, patients with recurrence had higher rates of positive margins compared with those without recurrence (83.3% vs 7.1%, P = 0.004), whereas the pooled study showed a difference of margin positivity of 50% vs 40% ( P = 0.01). No patients who underwent reconstruction in our study cohort had a recurrence during the study period. CONCLUSION: In both our cohort and pooled results, recurrence was significantly higher in patients with positive margins after initial resection. Reconstruction was not found to be a risk factor for recurrence. Reconstruction following desmoid tumor resection should be considered a viable option if a large and aggressive resection is required to obtain negative margins.

The impact of physical activity changes on exercise capacity and health-related quality of life in young patients with CHD: a 3-year follow-up study.

OBJECTIVE: This study examined the relationship between changes in physical activity and their impact on exercise capacity and health-related quality of life over a 3-year span in patients with CHD. METHODS: We evaluated 99 young patients with CHD, aged 13-18 years at the outset. Physical activity, health-related quality of life, and exercise capacity were assessed via questionnaires and peak oxygen uptake measurements at baseline and after 3 years; changes in measures were estimated between the two time points and categorised into quartiles. Participants were stratified according to achieved (active) or not-achieved (inactive) recommended levels of physical activity (≥150 minutes/week) at both time points. RESULTS: Despite increases in physical activity, exercise capacity, and health-related quality of life over 3 years, the changes were not statistically significant (all p > 0.05). However, a positive association was found between physical activity changes and exercise capacity (ß = 0.250, p = 0.040) and health-related quality of life improvements (ß = 0.380, p < 0.001). Those with the most pronounced physical activity increase showed notable exercise capacity (p < 0.001) and health-related quality of life increases (p < 0.001) compared with patients with the largest decline in physical activity. The active-inactive category demonstrated a notable decline in exercise capacity compared to the active-active group, while the inactive-active group showed health-related quality of life improvements. CONCLUSIONS: Over 3 years, increased physical activity was consistently linked to increases in exercise capacity and health-related quality of life in patients with CHD, highlighting the potential of physical activity augmentation as an intervention strategy.

A randomized controlled clinical evaluation of desensitization efficacy of a newly developed toothpaste with highly stabilized SnF2.

PURPOSE: To assess the relief of dentin hypersensitivity of the new toothpaste with stabilized stannous fluoride (SnF2) versus a marketed standard fluoride toothpaste as a negative control and a marketed anhydrous SnF2 toothpaste as a positive control. METHODS: This was a single-centered, randomized, controlled, double blind, clinical trial. 96 participants with hypersensitivity were enrolled in this 4-week clinical study. Electrical stimulation and evaporative air tests were performed to evaluate the desensitization efficacy. Clinical assessments were made at baseline, and after 3 days, 1 week, 2 weeks and 4 weeks of twice-daily brushing. Additionally, the influence of Sn² ⁺ species on desensitization was evaluated using bovine dentin specimens treated with toothpaste. RESULTS: All 96 enrolled participants were randomized. 96 participants completed all evaluations. Participants had an average age (SD) of 47.0 (10.5) years; 45% of participants were female. Both SnF2 toothpastes showed superior desensitization efficacy compared to the negative control toothpaste, the conventional sodium monofluorophosphate (SMFP) toothpaste, after a week. The new stabilized SnF2 toothpaste demonstrated improved electrical stimulation benefits compared to the negative control toothpaste, with increases of 15.1% after 3 days, 34.2% after 1 week, 66.3% after 2 weeks, and 111.6% after 4 weeks. Additionally, it showed relative verbal evaluation scale (VES) benefits of 14.2% after 3 days, 37.6% after 1 week, 28.9% after 2 weeks, and 37.4% after 4 weeks. The stabilized SnF2 toothpaste exhibited desensitization properties comparable to those of a commercial anhydrous SnF2 toothpaste, which typically produces undesirable side effects in the mouth. Toothpastes containing 0.454 % SnF2 exhibited perfect occlusion of dentin tubules. CLINICAL SIGNIFICANCE: The stabilized 0.454% SnF2 toothpaste exhibited significantly greater dentin hypersensitivity relief within only a week and comparable property to commercial anhydrous SnF2 toothpaste.

Mitigating Age-Related Ovarian Dysfunction with the Anti-Inflammatory Agent MIT-001.

Ovarian aging is a major obstacle in assisted reproductive medicine because it leads to ovarian dysfunction in women of advanced age. Currently, there are no effective treatments to cure age-related ovarian dysfunction. In this study, we investigated the effect of MIT-001 on the function of aged ovaries. Young and old mice were utilized in this study. MIT-001 was intraperitoneally administered, and the number of follicles and oocytes was analyzed. Each group was then retrieved for RNA and protein isolation. Total RNA was subjected to mRNA next-generation sequencing. Protein extracts from ovarian lysates were used to evaluate various cytokine levels in the ovaries. MIT-001 enhanced follicles and the number of oocytes were compared with non-treated old mice. MIT-001 downregulated immune response-related transcripts and cytokines in the ovaries of old mice. MIT-001 modulates the immune complex responsible for generating inflammatory signals and has the potential to restore the function of old ovaries and improve female fertility.

Comparative Analysis of Preoperative High Frequency Color Doppler Ultrasound versus MR Lymphangiography versus ICG Lymphography of Lymphatic Vessels in Lymphovenous Anastomosis.

BACKGROUND: Despite the extensive use of various imaging modalities, there is limited literature on comparing the reliability between indocyanine green (ICG) lymphography, MR Lymphangiogram (MRL), and high frequency color Doppler ultrasound (HFCDU) to identify lymphatic vessels. METHOD: In this study of 124 patients, the correlation between preoperative image findings to the actual lymphatic vessel leading to lymphovenous anastomosis (LVA) was evaluated. Sensitivity, specificity, positive predictive value (PPV), negative predictive value (NPV), and simple detection were calculated. Subgroup analysis was also performed according to the severity of lymphedema. RESULTS: Total of 328 LVAs were performed. The HFCDU overall had significantly higher sensitivity for identifying lymphatic vessels (99%) over MRL (83.5%) and ICG lymphography (82.3%)(p < 0.0001). Both ICG lymphography and HFCDU had 100% specificity and PPV. The NPV was 3.6%, 6.5% and 57.1% respectively for MRL, ICG lymphography, and HFCDU. All modalities showed high sensitivity for early stage 2 lymphedema while HFCDU showed a significantly higher sensitivity for late stage 2 (MRL:79.7%, ICG:83.1%, HFCDU:97%) and stage 3 (MRL:79.7%, ICG:79.7%, HFCDU:100%) over the other two modalities (p < 0.0001). CONCLUSION: This study demonstrated while all three modalities are able to provide good information, the sensitivity may alter as the severity of lymphedema progresses. The HFCDU will provide the best detection for lymphatic vessels throughout all stages of lymphedema. However, as each modality provides different and unique information, combining and evaluating the data according to the stage of lymphedema will be able to maximize the chance for a successful surgical outcome.

Utility of ERAS Pathway in Nonabdominal-Based Microsurgical Breast Reconstruction: Efficacy in PAP Flap Reconstruction?

BACKGROUND: Enhanced recovery after surgery (ERAS) protocols are effective in decreasing hospital length of stay and inpatient opioid consumption. Implementation of these protocols in abdominally based breast reconstruction has been successful. When a patient is a poor candidate for abdominally based flaps a popular secondary option is the profunda artery perforator (PAP) flap. We present our experience with implementation of our ERAS protocol in patients treated with PAP flaps for breast reconstruction. METHODS: Retrospective review of patients treated with autologous breast reconstruction using PAP flaps before and after ERAS implementation were performed. Patient characteristics, postoperative oral morphine equivalents (OMEs), and flap data were collected. RESULTS: A total of 87 patients were included in this study (58 patients in pre-ERAS and 29 patients in ERAS group). There was no statistical difference in patient age, comorbidities, smoking, and radiation between two groups. The ERAS group had statistically lower hospital length of stay (2.6 vs. 3.8 days), procedure time (315 vs. 433 minutes), postoperative day 0 (54.8 vs. 96.3), postoperative day 1 (29.9 vs. 57.7), and total opioid consumption (103.7 vs. 192.1). There was no statistical difference in average pain scores between two groups. Multivariate analysis revealed that procedure time significantly increased the amount of opioid consumption while ERAS implementation significantly reduced LOS and opioid consumption. CONCLUSION: Use of an ERAS protocol in PAP flap breast reconstruction has not been previously studied. Our work shows that ERAS implementation in PAP flap breast reconstruction significantly reduces inpatient opioid use and length of hospital stay.

Surgical Treatment of Upper Extremity Gunshot Injures: An Updated Review.

INTRODUCTION: Firearm morbidity and mortality have been increasing in recent years, and with this, the demand for medical personnel firearm injury treatment knowledge. Extremities contribute to a majority of firearm injuries, with these injuries being particularly complex because of neurovascular proximity within a confined space. Knowledge of firearm mechanism of injury and treatment management options is important for any trauma hand surgeon. Many factors play vital roles in the treatment of complex upper extremity (UE) gunshot wounds (GSWs). The aim of our review and case illustrations is to provide hand surgeons with an up-to-date guide for initial emergent management, soft tissue, bony, and nerve repair and reconstruction. PATIENT AND METHODS: A literature review was conducted in the current management of UE GSW injuries, and 2 specific patient case examples were included. High-energy versus low-energy GSWs were documented and compared, as well as containment injures. Management including soft tissue, bony, and nerve injuries was explored along with patient outcome. Based on these findings, guidelines for GSW management were purposed. CONCLUSION: Gunshot wounds of the UE encompass a group of highly heterogeneous injuries. High-energy wounds are more extensive, and concomitant injuries to bone, vessel, nerve, muscle, and soft tissue are common. Early treatment with adequate debridement, skeletal fixation, and soft tissue coverage is indicated for complex injuries, and antibiotic treatment in the pre-, peri-, and postoperative period is indicated for operative injuries. Soft tissue coverage options include the entire reconstructive ladder, with pattern of injury and considerations of wound characteristics dictating reconstructive choice. There are arguments to using either external or internal bony fixation techniques for bone fracture management, with choice tailored to the patient. For management of nerve injuries, we advocate earlier nerve repair and a shorter duration of observation before secondary reconstruction in selective cases. If transected nerve endings cannot be brought together, nerve autografts of shorter length are recommended to bridge nerve ending gaps. A significant number of patients with GSW fail to make necessary follow-up appointments, which adds to challenges in treatment.

MIT-001 Restores Human Placenta-Derived Mesenchymal Stem Cells by Enhancing Mitochondrial Quiescence and Cytoskeletal Organization.

Inflammation is a major cause of several chronic diseases and is reported to be recovered by the immuno-modulation of mesenchymal stem cells (MSCs). While most studies have focussed on the anti-inflammatory roles of MSCs in stem cell therapy, the impaired features of MSCs, such as the loss of homeostasis by systemic aging or pathologic conditions, remain incompletely understood. In this study, we investigated whether the altered phenotypes of human placenta-derived MSCs (hPD-MSCs) exposed to inflammatory cytokines, including TNF-α and IFN-γ, could be protected by MIT-001, a small anti-inflammatory and anti-necrotic molecule. MIT-001 promoted the spindle-like shape and cytoskeletal organization extending across the long cell axis, whereas hPD-MSCs exposed to TNF-α/IFN-γ exhibited increased morphological heterogeneity with an abnormal cell shape and cytoskeletal disorganization. Importantly, MIT-001 improved mitochondrial distribution across the cytoplasm. MIT-001 significantly reduced basal respiration, ATP production, and cellular ROS levels and augmented the spare respiratory capacity compared to TNF-α/IFN-γ-exposed hPD-MSCs, indicating enhanced mitochondrial quiescence and homeostasis. In conclusion, while TNF-α/IFN-γ-exposed MSCs lost homeostasis and mitochondrial quiescence by becoming over-activated in response to inflammatory cytokines, MIT-001 was able to rescue mitochondrial features and cellular phenotypes. Therefore, MIT-001 has therapeutic potential for clinical applications to treat mitochondrion-related inflammatory diseases.

The acute effects of interrupting prolonged sitting with stair climbing on vascular and metabolic function after a high-fat meal.

PURPOSE: Frequent consumption of high-fat meals and prolonged sedentary time are prevalent lifestyles that have been associated with an increased risk of vascular and metabolic complications. This study evaluated the acute effects of interrupting prolonged sitting with stair climbing on vascular and metabolic function after a high-fat meal. METHODS: In a randomized, cross-over trial, 12 healthy adults (age: 23.5 ± 2.9 years) consumed a high-fat meal, followed by either 1) a 4-h uninterrupted sitting (sitting trial) or 2) a 4-h sitting interrupted with a 5-min stair climbing (average intensity: 66% of heart rate reserve) every hour (interrupted trial). Plasma triglyceride and glucose concentrations, as well as popliteal artery blood flow and shear rate were assessed at baseline and every hour after a high-fat meal, whereas brachial artery flow-mediated dilation was assessed at baseline and again at the end of each trial. RESULTS: Plasma triglyceride and glucose concentrations increased after a high-fat meal and returned to baseline at the end of both trials. Following a high-fat meal, brachial artery flow-mediated dilation decreased in the sitting trial, but not in the interrupted trial (sitting trial: 9.65 ± 2.63% to 7.84 ± 2.36%; interrupted trial: 9.41 ± 2.61% to 10.34 ± 3.30%, p = 0.009 for interaction). Compared with the sitting trial, the interrupted trial improved popliteal blood flow and shear rate (p = 0.004 and p = 0.008 for interaction, respectively). CONCLUSIONS: These findings suggest that interrupting prolonged sitting with stair climbing may be an effective lifestyle strategy to prevent against vascular dysfunction that might occur as a result of prolonged sitting after consuming a high-fat meal in young healthy adults.

Classification and Management of Donor-Site Wound Complications in the Profunda Artery Perforator Flap for Breast Reconstruction.

BACKGROUND: Profunda artery perforator (PAP) flap breast reconstruction has emerged as a popular choice for patients who are not optimal candidates for autologous breast reconstruction using abdominal-based techniques such as the deep inferior epigastric perforator flap. Despite increased utilization of PAP flaps, there are no previous studies on the donor-site morbidity. In this study, we present risk factors, classification of thigh wounds, and our management of donor-site wounds. METHODS: Retrospective review of 69 patients who underwent PAP flap from 2013 to 2016 was performed. Demographic, patient characteristic, and flap data were collected. Postoperative photographs of donor sites were reviewed, and the wounds were classified into three types: type I-normal wound, type II-minor scab, and type III-dehiscence. RESULTS: Of the 69 patients (130 flaps), there were 13 patients (17 flaps) with wound dehiscence (13%), 8 patients with cellulitis (8.5%), 2 patients with seroma (3%), and 1 patient with hematoma (1.5%). The patients with wound dehiscence had statistically higher body mass index (BMI) (29.2 vs. 26.5) with p-value < 0.05 than the patients without wound complications. These patients had higher flap weight (514 vs. 439.7 g), were older (50.8 vs. 48.6 years old), and had a higher chance of being a diabetic (6 vs. 2%), but statistical significance was not achieved. The patients with dehiscence were managed with local wound care (63%), wound vacuum (26%), and operative intervention (11%). CONCLUSION: Our study shows that BMI plays a significant role in the development of postoperative thigh wounds, and all wounds occurred at the medial thigh. However, the majority of the study population did not require any intervention, and revision of scar using the posterior thigh advancement flaps can be used to improve the gluteal aesthetics. We believe findings from our study can help plastic surgeons to counsel and assist patients who will undergo breast reconstruction with a PAP flap.

Clinical Decision Making Using CTA in Conjoined, Bipedicled DIEP and SIEA for Unilateral Breast Reconstruction.

BACKGROUND: Using a hemi-abdominal flap for unilateral breast reconstruction in patients may not be ideal due to paucity of abdominal tissue, presence of a lower abdominal midline scar, or a larger and/or ptotic contralateral native breast. Several algorithms exist to make these flaps successful, but all of them require an anastomosis sequence ultimately. In this study, we present our experience with the use of imaging to predict flap dominance and anastomosis sequence to make them consistently successful. METHODS: Seventy-five consecutive conjoined, bipedicled abdominal composite free flaps for unilateral breast reconstruction were performed. Preoperative computed tomographic angiography (CTA) was obtained to depict the pattern of perforators, flap dominance, and feasibility for intraflap anastomosis. Patient demographics, type/weights of flaps, number of anastomoses, location of perforators, length/type of pedicles, and flap-related complications were reviewed. RESULTS: Seventy-five patients underwent composite deep inferior epigastric perforator (DIEP) and/or superficial inferior epigastric artery (SIEA) flaps. There were 62 DIEP-DIEP flaps, 11 DIEP-SIEA flaps, and two SIEA-SIEA flaps. The mean age was 57 years with an average body mass index of 27 kg/m2 and flap weight of 1,054 g. Thirty-one patients underwent intraflap (41%) and 44 patients underwent crania/caudal anastomoses (59%). In comparison to bilateral DIEPs, the total number of perforators was significantly lower (2.9 vs. 3.8), and fat necrosis rate was lower (2.7 vs. 14.4%) as well. CONCLUSION: Guided by preoperative CTA imaging, we recommend the consistent use of these conjoined, bipedicled hemi-abdominal flaps for unilateral breast reconstruction, primarily those with delayed reconstruction and radiation deficits. Preoperative CTA imaging is crucial in directing perforator dissection to maximize overlapping perfusion zones and guide in performing anastomoses.

The Role of Duplex Ultrasound in Microsurgical Reconstruction: Review and Technical Considerations.

BACKGROUND: With the technological advances, microsurgery has evolved to the era of supermicrosurgery since its inception. With the popularization of these flaps, proficiency in using tools such as color Doppler ultrasound (CDU) has become crucial. Despite the increased interest, studies regarding the role of ultrasound in microsurgical reconstruction are scarce. Therefore, in this study, we discussed currently available imaging modalities for reconstructive surgeons, types of ultrasound, and the role of ultrasound in microsurgical reconstruction, and made recommendations for ultrasound use in reconstructive surgery. METHODS: We performed a computerized search of ultrasound in reconstructive surgery using the MEDLINE database. Data regarding ultrasound indications, usage, and outcomes were collected. RESULTS: Of the 115 articles identified, the majority was written on nonreconstructive ultrasound uses (51.4%). For the reconstructive uses, mapping of perforators was the most common usage (39.1%), followed by flap monitoring and volume measurement. In addition, we found that there are a limited number of literature on the role of CDU in reconstructive surgery, especially on its intraoperative and postoperative use. CONCLUSION: CDU is a valuable and powerful tool for any reconstructive surgeons who are interested in performing microsurgery or supermicrosurgery. As the demand of customized flaps using superthin flaps, perforator-to-perforator anastomosis, and supermicrosurgery increases, understanding and becoming versatile in CDU will be critical. We hope our experience with using ultrasound and refinements that we made are helpful for those who would like to include it as a part of their armamentarium.

Association between mastication-related factors and the prevalence of dementia in Korean elderly women visiting senior centres.

OBJECTIVE: The purpose of this study was to evaluate the mastication ability of elderly women by assessing the number of their remaining teeth, subjective mastication comfort, subjective chewing ability of five food items, relative occlusion balance and mastication performance involving in chewing gum. BACKGROUND: Korea has already entered an aged society, issues related to the elderly are also growing; for example, dementia is emerging as a social problem. In addition, oral health of the elderly is very important because it is directly related to nutrient intake. A total of 101 subjects aged ≥65 who attended senior citizen centres in Daegu city provided consent and were included in this study. MATERIALS AND METHODS: The Korean version of the Mini-Mental State Examination (MMSE-DS) was used to evaluate cognitive function. To assess the degree of objective mastication, we measured colour changes using a chewing gum and posterior occlusion force using a T-scan Ⅲ® system. RESULTS: There was an association between mastication ability and cognitive function, indicated by the colour changes in the chewing gum (P < .05). The participants with greater relative posterior occlusion forces had higher MMSE-DS scores than those with stronger relative anterior occlusion forces. There was a positive correlation between cognitive function and posterior occlusion force. CONCLUSION: The elderly having more occlusion force of posterior teeth rather than anterior teeth were associated with better cognitive ability. Therefore, it may be important for the elderly to restore the masticatory function for the posterior part to prevent against deterioration of cognitive function.

In vivo and in vitro assessment of the bleaching effectiveness of a brush-off patch containing 3.0% hydrogen peroxide.

OBJECTIVES: To evaluate the efficacy of a brush-off patch containing 3.0% hydrogen peroxide, which is a new over-the-counter (OTC) product for tooth whitening, and determine the optimal protocol for use. MATERIALS AND METHODS: We performed an in vitro study using hydroxyapatite specimens and a clinical trial involving 140 volunteers. The brush-off patch was applied to the specimens (in vitro) or the maxillary anterior teeth (in vivo; 14 days) for 10 min twice daily (case 10 group) or 30 min once daily (case 30 group). We also included control groups in both experiments. Lightness (L*), redness (a*), and yellowness (b*) values were measured using a colorimeter. In the in vivo study, color changes were measured at baseline and 7 and 14 days after the start of patch application. The overall color change (ΔE) was statistically analyzed. RESULTS: In the in vitro study, the color change (ΔE*) after the experiment was significantly different between the two case groups and the control group (p < 0.001). In the in vivo study, the case groups showed color changes at both 7 and 14 days after patch application. In particular, the change in the case 30 group was significantly more prominent on day 14 than on day 7 (p < 0.05). CONCLUSION: Our findings suggest that brush-off patches containing 3.0% hydrogen peroxide are effective OTC products for tooth whitening. CLINICAL RELEVANCE: For best results, brush-off patches containing 3.0% hydrogen peroxide can be applied once daily for 30 min.

Subjective chewing ability and health-related quality of life among the elderly.

OBJECTIVE: Chewing ability may reflect the overall oral health, which affects the general health of the elderly. Therefore, we assessed the association between subjective chewing ability and health-related quality of life (HRQOL) among the elderly. METHODS: We analysed the data of 3034 elderly people aged ≥65 years from the Korean National Health and Nutrition Examination Survey that was conducted by the Korean government from 2013 to 2015 (KNHANES-VI). Subjective chewing ability was evaluated using a questionnaire, and HRQOL was assessed using EuroQol 5-dimension (EQ-5D) instrument by trained examiners. Covariates, such as socio-demographic, oral health-related and general health-related variables, were investigated. RESULTS: Logistic regression analysis showed that chewing ability was significantly associated with HRQOL in both crude and adjusted model for covariates such as age, gender, economic activity, residence, education, smoking, alcohol, hypertension, diabetes, remaining teeth, denture, CPI, tooth brushing and oral hygiene (crude OR, 2.67; 95% CI, 2.23-3.20) (adjusted OR, 2.36; 95% CI, 1.95-2.86). Chewing ability was also significantly associated with most dimensions of EQ-5D, such as motor ability, self-care, daily activities, pain and discomfort, and anxiety and depression (P < 0.05). CONCLUSION: Chewing ability was significantly associated with HRQOL, suggesting that elderly people with low chewing ability are more likely to have poor health-related quality of life.

Diagnostic Yield of Routine Skull Radiographs in Infants With Deformational Plagiocephaly.

OBJECTIVE: Differentiating synostotic and nonsynostotic plagiocephaly can be challenging, and many providers routinely obtain screening skull radiographs when evaluating an infant with plagiocephaly. However, the diagnostic yield of radiographs has not been studied in this clinical setting. DESIGN: This study was a retrospective chart review. SETTING: The study took place in a tertiary care center. PATIENTS: We retrospectively reviewed the records of all patients referred to Children's Medical Center (Dallas, TX) between the years 2010 to 2012 with a diagnosis of plagiocephaly. After an initial evaluation, skull radiographs were obtained to rule out craniosynostosis. We reviewed clinical and demographic data and radiographic findings to determine the diagnostic yield of routine screening radiographs in infants presenting with plagiocephaly. RESULTS: There were 1219 patients in total, and 1213 of these patients received screening four-view conventional skull radiographs. Six had computed tomography without prior radiographs. Of the patients in the skull radiograph group, 24% (289 of 1213) had abnormal radiographic findings, and 7.6% of this group (22 of 289) had findings that were indicative of craniosynostosis. Of these 22 patients, 12 obtained follow-up studies, and only three patients (0.2% of skull group) had true craniosynostosis. In comparison, 50% (three of six) in the group of patients who underwent computed tomography without prior conventional screening radiographs had true craniosynostosis. CONCLUSIONS: Routine screening skull radiographs have a low diagnostic yield in differentiating between synostotic and nonsynostotic plagiocephaly in patients presenting to a tertiary care deformational plagiocephaly clinic. Considering the costs and radiation exposure, the benefit of the routine use of skull radiographs in patients with deformational plagiocephaly is questionable.

Liquid Latex Molding: A Novel Application of 3D Printing to Facilitate Flap Design.

The approach to bony craniofacial reconstruction has been significantly enhanced with the development of patient-specific, computer-aided designed and manufactured (CAD/CAM) implants. This technology, however, has not yet been widely employed for soft tissue reconstruction. While algorithmic approaches based on the size, location, and etiology of the defect are effective in most cases, a patient-specific CAD/CAM approach has benefits in complex reconstructive problems. In this study, we present a patient-specific approach to preoperative flap planning: using three-dimensional (3D) printing and liquid latex to create a flexible model of a flap, and demonstrate its application in planning a complex scalp reconstruction.

Ionizing Radiation in Craniofacial Surgery: A Primer on Dose and Risks.

An understanding of radiation dose and the anticipated risk to the patient is an important aspect of ordering radiological imaging studies responsibly. It is especially true for the pediatric practitioner because children are more vulnerable to the biological effects of radiation, such as radiosensitivity, longer lifetime years, and higher cellular mitotic activity. The use of fluoroscopy and computed tomography is commonplace in the practice of craniofacial surgery, but often dose reports from varied investigations are not directly comparable, and the risk of patient harm from the investigation is unclear. This article presents the fundamentals of radiation, dose, and risk as it applies to radiological imaging and also introduces our low dose craniofacial computed tomography protocol.

Construction of a shuttle vector based on the small cryptic plasmid pJY33 from Weissella cibaria 33.

A cryptic plasmid, pJY33, from Weissella cibaria 33 was characterized. pJY33 was 2365 bp in size with a GC content of 41.27% and contained two putative open reading frames (ORFs). orf1 encoded a putative hypothetical protein of 134 amino acids. orf2 was 849 bp in size, and its putative translation product exhibited 87% identity with a replication initiation factor from a plasmid from W. cibaria KLC140. A Weissella-Escherichia coli shuttle vector, pJY33E (6.5 kb, Em(r)), was constructed by ligation of pJY33 with pBluescript II SK(-) and an erythromycin resistance gene (Em(r)). pJY33E replicated in Lactococcus lactis, Leuconostoc citreum, Lactobacillus brevis, Lactobacillus plantarum, and Weissella confusa. A single-stranded DNA intermediate was detected from Lb. brevis 2.14 harbouring pJY33E, providing evidence for rolling-circle replication of pJY33. Most Lb. brevis 2.14 cells (85.9%) retained pJY33E after one week of daily culturing in MRS broth without Em. An aga gene encoding α-galactosidase (α-Gal) from Leuconostoc mesenteroides was successfully expressed in Lb. brevis 2.14 using pJY33E, and the highest level of α-Gal activity (36.13 U/mg protein) was observed when cells were grown on melibiose.

Evaluation of the American Society of Anesthesiologists Physical Status classification system in risk assessment for plastic and reconstructive surgery patients.

BACKGROUND: The American Society of Anesthesiologists Physical Status (ASA-PS) classification is a ranking system that quantifies patient health before anesthesia and surgery. Some surgical disciplines apply the ASA-PS to gauge a patient's likelihood of developing postoperative complications. OBJECTIVE: In this study, the authors analyze whether ASA-PS scores can successfully predict risk for postoperative complications in plastic and reconstructive operations. METHODS: The authors retrospectively reviewed the charts of 1801 patient procedures and selected for inclusion 1794 complex plastic and reconstructive operations that took place at 1 of several academic medical institutions between January 2008 and January 2012. ASA-PS scores, patient comorbidities, and postoperative complications were analyzed. Percentile data were treated with tests for proportions. Nonpercentile data were analyzed through comparison of means (t test). Low-risk (ASA 1-2) and high-risk (ASA 3+) groups were compared with simple odds ratios. RESULTS: For the 1430 women and 364 men in the patient cohort (average age, 49.5 years), the overall complication rate was 27.7%. When patients with complications were compared to those without, body mass index, operation time, recent major surgery, diabetes, hypertension, renal disease, cancer, and oral contraceptive use were statistically significant. After high-risk (n = 398) and low-risk (n = 1396) groups were identified, infection, delayed wound healing, deep vein thrombosis, and overall complications had significantly increased incidence in the high risk group. Notably, deep vein thrombosis displayed the highest odds ratio (4.17) and a complication rate increase from 0.93% to 3.77%. CONCLUSIONS: ASA-PS scores can be used either as substitutes for or as adjuncts to questionnaire-based risk assessment methods in plastic surgery. In addition to deducing significant findings for deep vein thrombosis incidence, ASA-PS scores hold important predictive associations for multiple non-venous thromboembolism complications, providing a broader measurement for postoperative complication risks. LEVEL OF EVIDENCE: 4.