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Nevin Manimala Statistics

Addition of backward walking training to forward walking training improves walking speed in children with cerebral palsy: a systematic review with meta-analysis

Int J Rehabil Res. 2023 Aug 15. doi: 10.1097/MRR.0000000000000598. Online ahead of print.

ABSTRACT

The objective was to examine the effects of backward walking training for improving walking speed and balance in children with cerebral palsy. A systematic review of randomized trials was conducted. Trials had to include children with cerebral palsy, with a Gross Motor Function Classification System, between I and III, that delivered backward walking training as a solo intervention or in combination with forward walking training. The outcomes of interest were walking speed and balance. The methodological quality of included trials was assessed by the PEDro scale, and the quality of evidence was assessed according to Grading of Recommendations Assessment, Development and Evaluation. Eight papers, involving 156 participants, were included. Using random-effects meta-analysis, we estimated that backward walking training improved walking speed by 0.10 m/s [95% confidence interval (CI) 0.05-0.16] and by 2 points on the Pediatric Balance Scale (0-56) (95% CI 1.5-2.2) more than forward walking training. We also estimated that the addition of backward walking training increased walking speed by 0.20 m/s (95% CI 0.07-0.34) and reduced the angular excursion of the center of gravity by 0.5 degrees (95% CI -0.7 to -0.3). The quality of the evidence was classified as low to moderate. In conclusion, overall, backward walking training appears to be as effective or slightly superior to forward walking training for improving walking speed in children with CP. The addition of backward walking training statistically significantly and clinically important enhanced benefits on walking speed.

PMID:37581293 | DOI:10.1097/MRR.0000000000000598

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Accuracy of torque controllers on healing abutments in implant dentistry- an in vitro study

J Prosthodont. 2023 Aug 15. doi: 10.1111/jopr.13745. Online ahead of print.

ABSTRACT

PURPOSE: To evaluate the accuracy of three torque-control devices used on healing abutments in implant prosthodontics.

MATERIALS AND METHODS: In this in vitro experiment, three torque controllers, Ankylos® friction-based, Straumann® spring-based, and Anthogyr® pre-calibrated torque control devices were used to tighten the healing abutments of Ankylos® and Straumann® dental implants to a pre-determined value of 15 Ncm. A digital torque meter (DT), Cedar DID-4A, was used to assess removal torque as a surrogate for the accuracy of the torque controllers to apply a tightening force of 15Ncm on healing abutments. One-way analysis of variance (ANOVA) was used to identify differences between each torque controller and the digital torquemeter, a p<0.05 was considered significant.

RESULTS: The torque required to remove the healing abutments was 16.05± 0.66 Ncm for the Ankylos® ratchet, 12.61± 0.90 Ncm for the Straumann® ratchet, and 14.37±1.08 Ncm for the Anthogyr® torque-control device. Significant statistical differences were observed between AnkylosÒ and the control digital torquemeter (p = 1.84E-8 ; F = 50.3); Anthogyr® and control digital torquemeter (p = 0.01; F = 6.79); and Straumann® and control digital torquemeter (p = 0.01; F = 141.15).

CONCLUSION: Friction-based (Ankylos® ), spring-based (Straumann® ), and pre-calibrated (Anthogyr® ) torque control devices present over-torque and under-torque values when used over healing abutments of Ankylos® and Straumann® implant systems. This article is protected by copyright. All rights reserved.

PMID:37581292 | DOI:10.1111/jopr.13745

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Impact of Portable Normothermic Machine Perfusion for Liver Transplantation From Adult Deceased Donors

Ann Surg. 2023 Aug 15. doi: 10.1097/SLA.0000000000006032. Online ahead of print.

ABSTRACT

OBJECTIVE: In this study, we sought to assess how liver allografts preserved using portable normothermic machine perfusion (NMP) compare against those that underwent ischemic cold storage (ICS) in the setting of donation after brain death (DBD) and donation after circulatory death (DCD) liver transplantation.

BACKGROUND: Compared to conventional ICS, NMP may offer a more homeostatic preservation, permit physiologic assessment of organ function, and provide opportunities for graft improvement/modification. We report a single center US experience of liver NMP.

METHODS: A single center, retrospective analysis of collected data on 541 adult whole liver transplants from 469 DBD donors (NMP[n=58] vs ICS[n=411]) and 72 DCD donors (NMP[n=52] vs ICS[n=20]) between January 2016 and December 2022.

RESULTS: In DBD LT, male gender (OR [95% CI]: 1.83 [1.08-3.09]) and greater than 10% macrosteatosis of the donor liver (1.85 [1.10-3.10]) were statistically significant independent risk factors of early allograft dysfunction (EAD). Donor age >40yo and cold ischemia time (CIT) >7h were independent risk factors of reperfusion syndrome (RPS). 1-year, 3-year, and 5-year incidences of ischemic cholangiopathy (IC) did not differ significantly in DBD cases between the NMP and ICS cohorts. In DCD LT, NMP was an independent protective factor against EAD (0.11 [0.03-0.46]) and RPS (0.04 [0.01-0.25]). Incidence of IC in the DCD cases at 1-year and 3-year timepoints was significantly lower in the NMP cohort (1.9% compared to 20% in the ICS group).

CONCLUSIONS: Compared to conventional ICS, NMP can significantly reduce the incidence of EAD, RPS, and IC after DCD liver transplantation.

PMID:37581260 | DOI:10.1097/SLA.0000000000006032

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Racial disparities in early pregnancy: a narrative review

Curr Opin Obstet Gynecol. 2023 Aug 15. doi: 10.1097/GCO.0000000000000900. Online ahead of print.

ABSTRACT

PURPOSE OF REVIEW: This review introduces the recognized body of evidence on social determinants of health, which continue to show that a person’s health is determined by their broader environmental and social context and that societal inequities harm health and healthcare outcomes. An area of inequity is race, which, although a social construct, has a significant impact on a person’s morbidity and mortality as well as their access and experience of healthcare. Racial disparities in maternal and perinatal outcomes are widely recognized. Therefore, this review focuses on the less commonly addressed early pregnancy setting.

RECENT FINDINGS: Health inequities are present in the early pregnancy setting, as racial disparities exist in early pregnancy presentations and outcomes. Black women have a higher incidence of miscarriage, ectopic pregnancy and poorer survival rates from gestational trophoblastic neoplasms. Asian women have a statistically significantly higher incidence of gestational trophoblastic disease.

SUMMARY: The findings support the need for more consistent and detailed research on the impact of race on early pregnancy outcomes and increasing ethnic diversity among study populations for trials to ensure meaningful and applicable data. Raising awareness of this racial health inequity in early pregnancy is the first step clinicians can take to tackle this issue.

PMID:37581257 | DOI:10.1097/GCO.0000000000000900

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Causal modelling of heavy-tailed variables and confounders with application to river flow

Extremes (Boston). 2023;26(3):573-594. doi: 10.1007/s10687-022-00456-4. Epub 2022 Dec 17.

ABSTRACT

Confounding variables are a recurrent challenge for causal discovery and inference. In many situations, complex causal mechanisms only manifest themselves in extreme events, or take simpler forms in the extremes. Stimulated by data on extreme river flows and precipitation, we introduce a new causal discovery methodology for heavy-tailed variables that allows the effect of a known potential confounder to be almost entirely removed when the variables have comparable tails, and also decreases it sufficiently to enable correct causal inference when the confounder has a heavier tail. We also introduce a new parametric estimator for the existing causal tail coefficient and a permutation test. Simulations show that the methods work well and the ideas are applied to the motivating dataset.

SUPPLEMENTARY INFORMATION: The online version contains supplementary material available at 10.1007/s10687-022-00456-4.

PMID:37581203 | PMC:PMC10423152 | DOI:10.1007/s10687-022-00456-4

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Anesthetic Effect of 2% Amitriptyline Versus 2% Lidocaine: A Comparative Evaluation

Cureus. 2023 Aug 13;15(8):e43405. doi: 10.7759/cureus.43405. eCollection 2023 Aug.

ABSTRACT

Introduction A common dental problem is the fear of pain during needle prick for giving local anesthesia (LA). The needle prick pain during dental procedures often varies with sex and age. Perception of pain depends on various factors, which can be psychological and biological. This perception of pain may change the behavior of patients toward dental treatments. Traditionally, lidocaine gel formulation was utilized before the parenteral dosage form. The lidocaine gel formulation is considered the drug of choice for LA in dental surgery. Currently, amitriptyline has been utilized in dental practice because of its beneficial pharmacology. Hence, the present study has been undertaken to compare the anesthetic ability of amitriptyline as an intraoral topical anesthetic agent with lidocaine gel. Methods This study was a comparative clinical study between two medications’ anesthetic properties. This study included 120 patients indicated for bilateral orthodontics (the subdivision of dentistry that emphasizes identifying necessary interventions for the malocclusion of teeth) procedures. All the subjects were divided into amitriptyline and lidocaine groups. Both anesthetic gels were applied at separate sites before the injection of LA. The time of the onset of anesthesia was noted and analyzed. Patients were selected on the basis of inclusion and exclusion criteria. Individuals aged 18 to 30 years who were systemically healthy and orthodontically indicated for bilateral premolar extraction were included in this study. Again, patients with a history of neurological disorders and allergies to amitriptyline and lidocaine were excluded from the current study. Results Significant differences emerged between groups at five and 10 minutes, with amitriptyline-induced partial numbness (36.7% and 6.7%). At 40 and 45 minutes, both groups showed varied partial and complete numbness, with amitriptyline leading to partial recovery (23.3% and 73.3% complete numbness, 23.3% partial recovery) and lidocaine resulting in partial recovery (81.7%). When comparing the visual analog scale (VAS) scores, both groups exhibited a similar simultaneous effect at 15 minutes. Nonetheless, amitriptyline displayed significantly lower scores at 25 and 35 minutes (p < 0.001) in comparison to lidocaine. Similar observations were made when controlling for pain intensity. Conclusion It was concluded that amitriptyline holds both anesthetic and analgesic properties. Nevertheless, this study was unable to generalize the study findings because of the small sample size and being a single-center study. However, the VAS scores of anesthetic and analgesic pharmacodynamics properties of amitriptyline were statistically significantly lower than lidocaine, particularly at 25 and 35 minutes. Additionally, amitriptyline-induced anesthetic and analgesic pharmacology, especially pharmacokinetics properties, depends on the location and pattern of pain.

PMID:37581201 | PMC:PMC10423460 | DOI:10.7759/cureus.43405

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Influence of Meniscal Repair vs. Meniscectomy on Anterior Cruciate Ligament Reconstruction in Terms of Knee Stability and Radiological Imaging

Cureus. 2023 Aug 12;15(8):e43396. doi: 10.7759/cureus.43396. eCollection 2023 Aug.

ABSTRACT

The menisci are essential components in the pathophysiology of knee osteoarthritis. Patients with meniscal lesions and an intact anterior cruciate ligament (ACL) undergoing meniscectomy exhibit a significantly increased prevalence of radiographic osteoarthritis. ACL reconstruction surgery enhances knee stability and mitigates the advancement of minor meniscal tears. The purpose of this study was to show the influence of meniscal repair as compared to meniscectomy on anterior cruciate ligament reconstruction in terms of knee stability and radiological imaging. This was a retrospective study performed in Dr. D.Y. Patil Hospital, Pimpri, Pune, on a sample size of 30 patients between December 2021 and January 2023. Patients were followed up clinically and radiologically post-operatively at six months and one year. ACL reconstruction with meniscectomy was performed on 16 patients (group 2), while ACL reconstruction with meniscus repair was performed on 14 patients (group 1). At the end of six months in group 1, one patient out of 14 had a grade 2 Lachman test positive, while seven patients out of 16 had a grade 2 Lachman test positive in group 2. It was a statistically insignificant value (p>0.05). Further, at the end of 12 months, X-ray evaluation of the femoral tunnel shows an average increment of 0.5 mm in Group 1, while an average femoral tunnel widening of 3 mm was observed in Group 2. It was statistically insignificant (p>0.05). The study concluded that meniscus repair significantly increases anteromedial knee stability. It has been shown that meniscectomy, when done along with ACL reconstruction, increases the chances of femoral tunnel widening, resulting in less graft bone integration.

PMID:37581197 | PMC:PMC10423315 | DOI:10.7759/cureus.43396

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Rate of paediatric gastrostomy insertion in England and relationship to epidemiology of cerebral palsy

Frontline Gastroenterol. 2023 May 8;14(5):399-406. doi: 10.1136/flgastro-2022-102356. eCollection 2023.

ABSTRACT

BACKGROUND AND OBJECTIVES: Gastrostomy tubes are commonly used to provide an alternative route for enteral nutrition. Most of the gastrostomies are inserted in children with cerebral palsy. Previous studies have shown an increase in insertion rate, however, epidemiological studies reveal a stasis in prevalence of cerebral palsy. We aimed to provide an up-to-date rate of gastrostomy insertion in children in England over a 20-year period and systematically review the prevalence of cerebral palsy to ascertain an epidemiological explanation for insertion trends.

METHODS: Retrospective search of Hospital Episode Statistic, a database held diagnosis and procedural code from all England National Health Service hospitals from 2000 to 2021 using International Classification of Disease-10 and Office of Population Censuses and Survey’s Classification-4. England Office for National Statistics data were used for population census. MEDLINE and EMBASE were systematically searched for epidemiology of cerebral palsy.

RESULTS: There were 23 079 gastrostomies inserted in children <15 years in England (2000-2021) leading to a frequency of 12.4 insertions per 100 000 children per year and 1383 gastrostomy insertions in 15-18 years age group (6 per 100 000). The overall gastrostomy insertion rate in children <15 years has increased from 3.7 procedures per 100 000 in 2000 to 18.3 per 100 000 in 2017. Prevalence of cerebral palsy remained stable (1.5-3.3 per 1000 birth) since 1985.

CONCLUSIONS: There was a significant increase in the rate of gastrostomy insertion in children in England during most of the last 20 years not explained by a stable prevalence of cerebral palsy.

PMID:37581183 | PMC:PMC10423607 | DOI:10.1136/flgastro-2022-102356

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Using Radiomics and Convolutional Neural Networks for the Prediction of Hematoma Expansion After Intracerebral Hemorrhage

Int J Gen Med. 2023 Aug 9;16:3393-3402. doi: 10.2147/IJGM.S408725. eCollection 2023.

ABSTRACT

BACKGROUND: Hematoma enlargement (HE) is a common complication following acute intracerebral hemorrhage (ICH) and is associated with early deterioration and unfavorable clinical outcomes. This study aimed to evaluate the predictive performance of a computed tomography (CT) based model that utilizes deep learning features in identifying HE.

METHODS: A total of 408 patients were retrospectively enrolled between January 2015 and December 2020 from our institution. We designed an automatic model that could mask the hematoma area and fusion features of radiomics, clinical data, and convolutional neural network (CNN) in a hybrid model. We assessed the model’s performance by using confusion matrix metrics (CM), the area under the receiver operating characteristics curve (AUC), and other statistical indicators.

RESULTS: After automated masking, 408 patients were randomly divided into two cohorts with 204 patients in the training set and 204 patients in the validation set. The first cohort trained the CNN model, from which we then extracted radiomics, clinical data, and CNN features for the second validation cohort. After feature selection by K-highest score, a support vector machines (SVM) model classification was used to predict HE. Our hybrid model exhibited a high AUC of 0.949, and 0.95 of precision, 0.83 of recall, and 0.94 of average precision (AP). The CM found that only 5 cases were misidentified by the model.

CONCLUSION: The automatic hybrid model we developed is an end-to-end method and can assist in clinical decision-making, thereby facilitating personalized treatment for patients with ICH.

PMID:37581173 | PMC:PMC10423600 | DOI:10.2147/IJGM.S408725

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An Evaluation of the Second Trimester Thyroid Function Test in Gestational Diabetes Mellitus: A Case-Control Study

Cureus. 2023 Jul 13;15(7):e41858. doi: 10.7759/cureus.41858. eCollection 2023 Jul.

ABSTRACT

INTRODUCTION: Gestational diabetes mellitus (GDM) is defined as glucose intolerance in a female with its onset or first recognition during pregnancy. Females with GDM are at higher risk of developing antenatal complications like preeclampsia during pregnancy and increased risk of type 2 diabetes as well as cardiovascular disorders later in their life. Maternal thyroid changes in the first and second trimesters of pregnancy have been widely related to the risk of GDM. Hypothyroidism during pregnancy is associated with early and late complications like abortions, anaemia, gestational hypertension, placental abruption and postpartum haemorrhage, impaired infant neurodevelopment, and low birth weight.

OBJECTIVES: This study aims to compare the thyroid function test (TFT) (serum fT3, fT4, TSH) and thyroid peroxidase antibody (anti TPO) between GDM and non GDM pregnant women in the second trimester and to correlate the adverse pregnancy outcomes with TFT in GDM and non GDM women.

METHODS: A nested case-control study was done in the Department of Obstetrics and Gynaecology, Department of Endocrinology, Department of Paediatrics, University College of Medical Sciences, and Guru Teg Bahadur (GTB) Hospital, Delhi. About 350 pregnant women from 13 weeks till 28 weeks period of gestation were screened out of which 40 GDM and 40 non GDM women were selected after performing an oral glucose tolerance test (OGTT). A TFT and anti TPO test were compared between GDM and non GDM participants. Furthermore, various parameters like sociodemographic profile, mode of delivery, pregnancy outcomes, and adverse maternal and adverse neonatal outcomes were compared.

CONCLUSION: The mean age of GDM women is found to be more than non GDM women. The mean TFT values are significantly lower in women with GDM as compared to non GDM women. In addition, higher values of anti TPO antibody (thyroid autoantibody) were found in the GDM group which aids in insulin resistance. Maternal complications like polyhydramnios, preterm labour, and pregnancy-induced hypertension were found to be more frequent in the GDM group compared to the non GDM group, but the results were statistically not significant. There was a higher incidence of caesarean delivery in the GDM group. Thus, we recommend the implementation of routine thyroid function profile testing in all antenatal females especially those who are at risk of developing GDM. Our study is one of the few Indian studies to evaluate the association of TFT in GDM, and we recommend similar research with a larger sample size and postnatal follow-up.

PMID:37581158 | PMC:PMC10423316 | DOI:10.7759/cureus.41858