Take a Break for Memory Sake! Effects of Short Physical Activity Breaks on Inhibitory Control, Episodic Memory, and Event-Related Potentials in Children.

The pervasive sedentary lifestyle exacerbated by the COVID-19 pandemic has significantly reduced physical activity (PA) among school-age children, necessitating innovative strategies to evaluate short PA breaks that are feasible in a classroom setting. This study explored the cognitive and neurophysiological (electroencephalography; EEG) impacts of short bouts of different PA modalities on inhibitory control (flanker task) and episodic memory (word recognition task) in children. Utilizing a within-participants cross-over design, thirty-six children (n = 36; 9-12 years old) attended the lab on three separate days with each visit including either a 9 min bout of sustained moderate-intensity cycling, high-intensity interval exercise (HIIE), or seated rest. Event-related potentials (ERPs) were assessed during the flanker task (P3 component) and the word recognition task (LPC and FN400 components) to elucidate the neural mechanisms underpinning behavioral outcomes. Findings indicated no differences in flanker performance but greater episodic memory recall for HIIE compared to seated rest. Neurophysiological results revealed no differences for P3, but notably larger amplitude for LPC and FN400 postcycling, particularly over parietal electrode sites. These results underscore the potential of short PA breaks to improve cognitive and neurocognitive function in children, offering a feasible integration strategy into daily school routines without extensive time commitment.

Preoperative Preparatory Talk (PPT): Developing Operative Expertise of Plastic Surgery Trainees by Three Rounds of Preceptor-Trainee Discussions.

Background Plastic surgery training requires the trainee to assist in surgeries to improve their on-table decision making and hone their surgical skills, but this results in an increased risk of intraoperative complications and increased operative time. It is important to have a training method that orients the trainee toward the surgery to ensure patient safety. Materials and Methods A training method called preoperative preparatory talk (PPT) was devised in which the preceptor orients the trainee toward the planned surgery in three phases. Comparison and statistical analysis of mean operative times of four stages of free flap surgeries after PPT and without PPT were done. Objective Structured Assessment of Technical Skill (OSATS) scores of surgical trainees were also documented for surgeries done with and without PPT and statistical analysis was done for comparing these scores. Results Statistical analysis via unpaired t -test confirmed that after applying PPT, there was a significant decrease in time taken in three out of four stages of free flap surgeries: flap planning and harvesting, recipient site preparation and vessel dissection, and flap division and partial inset. Trainees were found to be better oriented toward the surgery which resulted in a better performance on table that was confirmed by statistical analysis of OSATS score via unpaired t -test. Conclusion PPT ensures better learning for the resident and improves patient safety because of better orientation of the operating team toward the procedure and operating steps. This reduces the operative time of free flap surgeries. We recommend this training method to be incorporated in plastic surgery training programs.

Salvage of Injured Lower Limb and Improvement of Quality of Life of a 1½-Year-Old Child.

We present a case of left proximal femoral artery transection injury in 1½-year-old male child due to a fall over a bike handle after sustaining a road traffic accident. He was presented to the emergency room with a cut proximal end of the left femoral artery and a fracture upper end of the shaft of the femur seen at the wound site. Following initial resuscitation, the patient was planned for wound exploration, fracture stabilization, and femoral artery repair which were executed, and salvage of the lower limb of 1½-year-old child was achieved. We conclude that teamwork, training, and experience in repairing pediatric vessels and timely pediatric vascular repair play a pivotal role in the salvage of a limb and improvement of the quality of life of a child.

Early One Stage Functional Reconstruction of a Mangled Upper Extremity.

Background: A crush injury to the upper extremity with a MESS (Mangled Extremity Severity Score) more than or equal to 10 carries a poor salvage prognosis and functional outcome. Usually performing multiple staged surgeries in these patients make the follow up and rehabilitation regimen long and complicated. This means either the patient doesent return or fails to gain any function. In order to overcome this problem we have done a single stage functional reconstruction in a mangled upper extremity. Case: A young female presented with a crush injuiry of the upper limb where a functional reconstruction with an LD (Latissimus Dorsi) flap was done 48 hrs after limb salvage surgery. The flap provided cover to the shoulder and elbow joint and also acted as a motor for elbow flexion. Result: After 6 months following surgery, the patient had regained active motion in her elbow and shoulder joint, and at 1 year she was able to carry out activities of daily living without any external help. Conclusion: Our case demonstrates that the mangled upper extremity can have varied presentations but the surgeon should use every knowledge and technique at their disposal to achieve the maximum chance of autologous functional reconstruction. Supplementary Information: The online version contains supplementary material available at 10.1007/s43465-022-00700-w.

Dynamic Upper Eyelid Reconstruction for Total Periorbital Soft Tissue Loss.

Total eyelid defect comprises full-thickness loss of both upper and lower eyelids in a patient. It is a rare and devastating condition with serious implications related to vision, which mandates early and functional reconstruction when associated with intact globe. The primary goal is to give a stable coverage for orbital protection but at the same time provide a functional reconstruction of the defect, to allow for adequate mobility of the eyelids so that the patient's vision is restored to normal with minimal disability. When the defect is massive, and in the absence of loco-regional flaps, microvascular tissue transfer is needed. In this report we describe a radial-artery-based microvascular tissue transfer with a unique innovation utilizing the contralateral frontalis muscle to reconstruct a case of unilateral total upper and lower eyelid loss.

Free Vascularized Supraclavicular Autologous Heterotopic Lymph Node Transfers Without Skin Paddle for Lymphedema Lower Limb.

Free vascularized lymph node transfer (VLNT) is one of the new and highly efficacious procedures in the cases of lymphedema. In this case, we present a case of lower-limb lymphedema which was managed by this procedure where a supraclavicular LN was harvested and transferred to the lower leg. VLNT from the supraclavicular region is a very effective treatment for physiological restoration of the lymphatic flow in established cases of lower-limb lymphedema because of well-hidden favorable scar and minimal chances of secondary iatrogenic lymphedema in the donor region unlike other sites such as groin and axilla. The VLNT should be preferred over manual lymphatic drainage because it is very effective treatment for physiological restoration of the lymphatic flow, however, the further analytical studies are required to confirm statistically the effectiveness of the same over other modalities.

A Systematic Review Comparing Outcomes of Local Flap Options for Reconstruction of Pressure Sores.

INTRODUCTION: Pressure sores are agonizing complications of chronically bedridden patients. The management of these lesions particularly with respect to grades III and IV lesions are chiefly surgical and involves a multidisciplinary approach. Although there are a variety of local flap options, like fasciocutaneous flaps, musculocutaneous flaps, perforator flaps, and combinations of these to choose from, there is a paucity of literature regarding which flap is better among these in terms of complication and recurrence rates. METHODS: The databases searched were as follows: Cochrane Central Register of Controlled trials (January 2000 to July 2020), MEDLINE (January 2000 to July 2020), and EMBASE (January 2000 to August of 2020). Key words used were "pressure ulcer," "flaps," "surgery," "pressure sore" with limits, "human," and "English." Primary outcomes were "overall complication rates" and "recurrence rates." Overall complication was further categorized as flap necrosis, flap dehiscence, infection, and others. RESULTS: Thirty-nine articles were included in the final analysis. There was a statistically significant difference among the various types of flaps for overall complication, flap dehiscence, infection, flap necrosis, and recurrence rates. CONCLUSIONS: Our study indicates that musculocutaneous flaps have lower recurrence rates, and combined flaps have lower complication rates. However, various other factors, like donor site morbidity, initial defect size, operating time, intraoperative blood loss, salvage options in case of recurrence, should also be considered while choosing a flap to reconstruct a defect.

"Use of pedicled corticoperiosteal flap in resistant cases of distal femur non-union: Our learning experience".

INTRODUCTION: Nonunion of distal femur is a complex problem with the added burden of poor bone stock, osteopenia, and joint contracture. Various procedures are described ranging from osteosynthesis using auto/allograft, to use of mega prosthesis. Use of vascularized corticoperiosteal flap based on descending genicular artery and superomedial genicular artery is a new technique to provide living vascular graft for the nonunion site. Although few free corticoperiosteal flap reconstructions have been reported in the past for these distal femur nonunions, this flap has seldom been used as a pedicled variety. Through this article, we aimed at highlighting the main obstacles faced while using pedicled corticoperiosteal flap for these patients given its dearth in literature. MATERIALS AND METHODS: Five patients of at least two previously failed osteosynthesis for distal femur fracture non-union were selected for performing corticoperiosteal flaps. The intraoperative findings that were both favourable and unfavourable were documented along with the outcome of procedure in the form of callus formation or fracture healing. RESULTS: Dissection of the flap was more tedious in these cases than when performed for a different indication in a virgin territory. However, despite the previous trauma resulting in decreased pliability of their vessels, all flaps were viable at the end of procedure with favourable cosmetic and functional outcomes. CONCLUSION: Despite the complexities in flap harvest, use of the less morbid and technically easier "Pedicled corticoperiosteal flap" and osteosynthesis along with the auto technique is a worthwhile option for retaining the native joint with favourable outcome in non-unions of distal femur.

Frequency of anemia and micronutrient deficiency among children with cleft lip and palate: a single-center cross-sectional study from Uttarakhand, India.

BACKGROUND: Children with cleft lip and/or palate can be undernourished due to feeding difficulties after birth. A vicious cycle ensues where malnutrition and low body weight precludes the child from having the corrective surgery, in the absence of which the child fails to gain weight. This study aimed to identify the proportion of malnutrition, including the deficiency of major micronutrients, namely iron, folate and vitamin B12, in children with cleft lip and/or palate and thus help in finding out what nutritional interventions can improve the scenario for these children. METHODS: All children less than 5 years with cleft lip and/or cleft palate attending our institute were included. On their first visit, following were recorded: demographic data, assessment of malnutrition, investigations: complete blood count and peripheral blood film examination; serum albumin, ferritin, iron, folate, and vitamin B12 levels. RESULTS: Eighty-one children with cleft lip and/or palate were included. Mean age was 25.37± 21.49 months (range, 3-60 months). In 53% of children suffered from moderate to severe wasting, according to World Health Organization (WHO) classification. Iron deficiency state was found in 91.6% of children. In 35.80% of children had vitamin B12 deficiency and 23.45% had folate deficiency. No correlation was found between iron deficiency and the type of deformity. CONCLUSION: Iron deficiency state is almost universally present in children with cleft lip and palate. Thus, iron and folic acid supplementation should be given at first contact to improve iron reserve and hematological parameters for optimum and safe surgery.

Frequency of anemia and micronutrient deficiency among children with cleft lip and palate: a single-center cross-sectional study from Uttarakhand, India

Background@#Children with cleft lip and/or palate can be undernourished due to feeding difficulties after birth. A vicious cycle ensues where malnutrition and low body weight precludes the child from having the corrective surgery, in the absence of which the child fails to gain weight. This study aimed to identify the proportion of malnutrition, including the deficiency of major micronutrients, namely iron, folate and vitamin B12, in children with cleft lip and/or palate and thus help in finding out what nutritional interventions can improve the scenario for these children. @*Methods@#All children less than 5 years with cleft lip and/or cleft palate attending our institute were included. On their first visit, following were recorded: demographic data, assessment of malnutrition, investigations: complete blood count and peripheral blood film examination; serum albumin, ferritin, iron, folate, and vitamin B12 levels. @*Results@#Eighty-one children with cleft lip and/or palate were included. Mean age was 25.37± 21.49 months (range, 3–60 months). In 53% of children suffered from moderate to severe wasting, according to World Health Organization (WHO) classification. Iron deficiency state was found in 91.6% of children. In 35.80% of children had vitamin B12 deficiency and 23.45% had folate deficiency. No correlation was found between iron deficiency and the type of deformity. @*Conclusion@#Iron deficiency state is almost universally present in children with cleft lip and palate. Thus, iron and folic acid supplementation should be given at first contact to improve iron reserve and hematological parameters for optimum and safe surgery.

Prevalence of excessive internet use and its association with psychological distress among university students in South India.

BACKGROUND: Excessive internet use, psychological distress, and its inter-relationship among university students can impact their academic progress, scholastic competence, career goals, and extracurricular interests. Thus, a need exists to evaluate the addictive internet use among university students. OBJECTIVES: This study was set up to examine the internet use behaviors, internet addiction (IA), and its association with psychological distress primarily depression among a large group of university students from South India. METHODS: Totally 2776 university students aged 18-21 years; pursuing undergraduate studies from a recognized university in South India participated in the study. The patterns of internet use and socioeducational data were collected through the internet use behaviors and demographic data sheet, IA test (IAT) was utilized to assess IA and psychological distress primarily depressive symptoms were evaluated with Self-Report Questionnaire-20. RESULTS: Among the total n = 2776, 29.9% (n = 831) of university students met criterion on IAT for mild IA, 16.4% (n = 455) for moderate addictive use, and 0.5% (n = 13) for severe IA. IA was higher among university students who were male, staying in rented accommodations, accessed internet several times a day, spent more than 3 h per day on the Internet and had psychological distress. Male gender, duration of use, time spent per day, frequency of internet use, and psychological distress (depressive symptoms) predicted IA. CONCLUSIONS: IA was present among a substantial proportion of university students which can inhibit their academic progress and impact their psychological health. Early identification of risk factors of IA can facilitate the effective prevention and timely initiation of treatment strategies for IA and psychological distress among university students.

Psychological distress among college students of coastal district of Karnataka: A community-based cross-sectional survey.

BACKGROUND: Common Mental Disorders (CMDs) are frequent among adolescents and early adults. National Mental Health Survey of India 2015-2016 shows alarming results, especially for depression. This study explored the prevalence of psychological distress among college students. Additionally, the relationship between gender, living arrangement with psychological distress in various educational streams were explored. MATERIALS AND METHODS: Through a cross-sectional community-based survey a total of 4839 college going students of various educational streams in Mangalore, Karnataka were assessed for psychological distress with Self-Reporting Questionnaire (SRQ-20). RESULTS: Participants had median age of 19 (range = 9) years and the majority (59.5%) were females. The median SRQ score was 4 (range 20) and about 28.5% of students were found to be psychologically stressed. The suicidal ideation was reported by 13.6% of the students. Engineering and Arts/science/commerce students had significantly higher psychological distress scores as compared to health and allied sciences (k = 47.7; p < 0.001) and those who were staying with families (U = 2,687,648.5; p = 0.004) reported higher levels of psychological distress in comparison to those who were staying away from their families. CONCLUSION: Prevalence of psychological distress was high among students, especially non-medical students, students who were staying with their families, and those who were younger in age. A significant proportion of students had suicidal ideation, which needs early mental health interventions at the college level.

Internet Use Patterns, Internet Addiction, and Psychological Distress Among Engineering University Students: A Study from India.

BACKGROUND: Internet addiction (IA) among university engineering students and its association with psychological distress can impact their educational progress, academic competence, and long-term career goals. Thus, there is a need to investigate the IA among engineering students. OBJECTIVES: This study was a first such attempt to explore internet use behaviors, IA, among a large group of engineering students from India, and its association with psychological distress primarily depressive symptoms. METHODS: One thousand eighty six engineering students aged 18-21 years pursuing bachelors in engineering from the south Indian city of Mangalore participated in the study. The socio-educational and internet use behaviors data sheet was used to gather demographic information and patterns of internet use, Internet Addiction Test (IAT) was utilized to assess IA, and Self-Report Questionnaire (SRQ-20) assessed psychological distress primarily depressive symptoms. RESULTS: Among the total N = 1086, 27.1% of engineering students met criterion for mild addictive internet use, 9.7% for moderate addictive internet use, and 0.4% for severe addiction to internet. IA was higher among engineering students who were male, staying in rented accommodations, accessed internet several times a day, spent more than 3 h per day on internet, and had psychological distress. Gender, duration of use, time spent per day, frequency of internet use, and psychological distress (depressive symptoms) predicted IA. CONCLUSIONS: A substantial proportion of engineering students have IA which can be detrimental for their educational progress in university studies and long-term career goals. Early identification and management of IA and psychological distress among engineering students is crucial.

Survivability of low pathogenic (H9N2) avian influenza virus in water in the presence of Atyopsis moluccensis (Bamboo shrimp).

Low pathogenic avian influenza virus (LPAIV) exhibits an ecological climax with the aquatic ecosystem. The most widely prevalent subtype of LPAIV is H9N2. Wild aquatic birds being the natural reservoirs and ducks, the "Trojan horses" for Avian Influenza Virus (AIV), can contaminate the natural water bodies inhabited by them. The virus can persist in the contaminated water from days to years depending upon the environmental conditions. Various aquatic species other than ducks can promote the persistence and transmission of AIV; however, studies on the role of aquatic fauna in persistence and transmission of avian influenza virus are scarce. This experiment was designed to evaluate the survivability of H9N2 LPAIV in water with and without Atyopsis moluccensis (bamboo shrimp) for a period of 12 days. The infectivity and amount of virus in water were calculated and were found to be significantly higher in water with A. moluccensis than in water without A. moluccensis. The study also showed that A. moluccensis can accumulate the virus mechanically which can infect chicken eggs up to 11 days. The virus transmission potential of A. moluccensis requires further studies.

Anticancer activity of fungal L-asparaginase conjugated with zinc oxide nanoparticles.

Demand for developing novel delivery system for cancer treatment has increased due to the side effects present in intravenous injection of L-asparaginase. Nanoparticles are used for delivering the drugs to its destination in cancer cure. Nanobiocomposite of zinc oxide nanoparticles conjugated with L-asparaginase was produced by Aspergillus terreus and was confirmed using maximum UV-Vis absorption at 340 nm in the present work. The presence of functional groups like OH, C-H, -C=N and C=O on the surface of nanobiocomposite was found from Fourier transform infrared spectrum analysis. Size of the produced nanocomposite was found in the range of 28-63 nm using scanning electron microscope. The crystalline nature of the synthesized nanobiocomposites was confirmed by X-ray diffraction analysis. The presence of zinc oxide on synthesized nanobiocomposite was confirmed by energy dispersive spectrum analysis. The anti-cancerous nature of the synthesized zinc oxide conjugated L-asparaginase nanobiocomposite on MCF-7 cell line was studied using MTT assay. The viability of the MCF-7 cells was decreased to 35.02 % when it was treated with L-asparaginase conjugated zinc oxide nanobiocomposite. Hence it is proved that the synthesized nanobiocomposites of zinc oxide conjugated L-asparaginase has good anti-cancerous activity.

Redox properties and catalytic activity of CuO/γ-Al2O3 meso phase.

Copper oxide based systems are well appreciated for their oxidation activity. The present piece of work discusses the redox properties and catalytic activity of CuO impregnated on mesoporous alumina support. A series of catalysts with copper loading varying from 2.0 to 14 wt% were prepared by deposition precipitation method on meso alumina obtained via surfactant assisted route using dodecylamine. CO oxidation has been taken as the test reaction for investigating the catalytic activity of these systems. The catalysts are characterised by TEM, SEM, XRD, FTIR spectroscopy, DR UV spectroscopy, N2 adsorption-desorption study, ESR spectroscopy and TPR using H2. The characterisations indicated CuO in highly dispersed amorphous state at copper loadings <14 wt% in the samples, and as crystalline phase at higher loadings. Easily reducible well dispersed CuO species favoured the reaction, indicating the decisive role of reducibility of the catalysts in CO oxidation. Almost complete oxidation of CO was affected over the system under the prescribed reaction conditions, and practically nil deactivation was recorded when the reaction was performed over a period of 50h.

Retinal pigment epithelium rips after ranibizumab in neovascular age-related macular degeneration: incidence, risk factors and long-term outcome.

BACKGROUND: Retinal pigment epithelium (RPE) rips after ranibizumab for wet age related macular degeneration (AMD) with a pigment epithelial detachments (PED) are a dreaded complication. Aim of this study was to analyse the incidence, the risk factors and long-term outcome after a PED tear. PATIENTS AND METHODS: 401 patients with wet AMD were analysed. A total of 33 eyes with PED were identified. Mean follow up time was 635 days (SD ± 311). RESULTS: PED tears occurred in 8 (24%) patients. Most RPE rips (40%) occurred within the first three months. Mean visual loss was 13 letters (range -57-9). The PED tear group had a mean PED height of 521 µm. The PED group without a tear had a mean height of 300 µm (p ≤ 0.001). Patients with a PED height over 300 µm had more than twice the risk to develop a RPE rip compared to patients with PED height smaller than 300 µm (p ≤ 0.001). CONCLUSIONS: PED height is a relevant factor for the incidence of RPE rips after treatment with ranibizumab. Owing to the close time relationship with the therapy, this complication must be taken into account before treatment as it may lead to significant vision loss.

New and effective multi-element alpha-hematite systems for reduction of trichloroethylene.

The reactivity of different alpha-hematite (alpha-Fe203) systems for dechlorination of trichloroethylene (TCE) in the presence of Fe(II) and CaO was investigated. Initially different experiments were conducted to investigate the reactivity of pure and doped alpha-Fe203. It was found that the presence of elements such as Si, Cu, and Mn in alpha-Fe203 had a significant effect on TCE reduction potential of alpha-Fe203; however, the reduction potential was less than that of alpha-Fe203 (Bayferrox- 110 M, used in a previous study). Further studies were carried out and alpha-Fe203 was synthesized in a manner similar to that of Bayferrox-110 M. This synthetic alpha-Fe203 showed improved reactivity and was found to follow pseudo-first-order kinetics when used in TCE reduction experiments. The preliminary end products analysis showed that TCE degradation was probably via beta-elimination pathway. Detailed investigations ofa-Fe203 systems were carried out using X-ray diffraction, X-ray fluorescence, and scanning electron microscopy with energy-dispersive spectrometry. The results demonstrated that the TCE reduction capacity of alpha-Fe203 was strongly dependent on the other elements present in iron powder used to synthesize alpha-Fe203. It was suspected that these multi-elements in alpha-Fe203 helped to improve its conduction property. Current findings suggest that alpha-Fe203 not in the pure but combined with other elements could be thought as a potential system for TCE reduction.