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Buch R, Tran M, Hinojosa J, Wooten D, Gokaslan S, Moeller D, Loomis M. Harnessing the Near-Peer Effect in Anatomy Education. Med Sci Educ 2023; 33:1033-1034. [PMID: 37886299 PMCID: PMC10597959 DOI: 10.1007/s40670-023-01841-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 07/17/2023] [Indexed: 10/28/2023]
Abstract
Benefits of near-peer teaching are well-documented, but its time requirements can be prohibitive. We integrated the near-peer effect into a clinical anatomy course with weekly student-developed handouts vetted by faculty to provide an element of near-peer teaching without the burden of extra time.
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Affiliation(s)
- R. Buch
- Department of Clinical Anatomy, Sam Houston State University College of Osteopathic Medicine, 925 City Central Ave, Conroe, TX 77304 USA
| | - M. Tran
- Department of Clinical Anatomy, Sam Houston State University College of Osteopathic Medicine, 925 City Central Ave, Conroe, TX 77304 USA
| | - J. Hinojosa
- Department of Clinical Anatomy, Sam Houston State University College of Osteopathic Medicine, 925 City Central Ave, Conroe, TX 77304 USA
| | - D. Wooten
- Department of Clinical Anatomy, Sam Houston State University College of Osteopathic Medicine, 925 City Central Ave, Conroe, TX 77304 USA
| | - S. Gokaslan
- Department of Clinical Anatomy, Sam Houston State University College of Osteopathic Medicine, 925 City Central Ave, Conroe, TX 77304 USA
| | - D. Moeller
- Department of Clinical Anatomy, Sam Houston State University College of Osteopathic Medicine, 925 City Central Ave, Conroe, TX 77304 USA
| | - M. Loomis
- Department of Clinical Anatomy, Sam Houston State University College of Osteopathic Medicine, 925 City Central Ave, Conroe, TX 77304 USA
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Tran M, Shrake K, Chera BS, DePaoli B, Duffy EW, Hall MB, Steinman JS, Myers S, Igiebor OS, Sauls L, Pratt S, Callahan J, McDonald DG, Harper JL, Cooper SL. Reducing Patient Care Delays in Radiation Oncology via Optimization of Insurance Pre-Authorization. Int J Radiat Oncol Biol Phys 2023; 117:S97-S98. [PMID: 37784616 DOI: 10.1016/j.ijrobp.2023.06.432] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) Difficulties and delays in insurance pre-authorization (pre-auth) can negatively impact patient care, resulting in postponing, modifying, or even cancelling radiation therapy for patients. Unfortunately, pre-auth delays are not uncommon. The purpose of our project was to perform a root cause analysis of reasons for pre-auth delays, and implement solutions to optimize our workflow to better serve our patients. Our primary objectives were to decrease the mean time for clinical treatment plan (CTP) completion, and for number of cases delayed/denied, by 50% each. MATERIALS/METHODS We performed a root cause analysis of reasons for pre-auth delays and used the PDSA & A3 quality improvement methods. We sampled ∼2 cases per disease site (total 19 cases from July - Aug 2022) to determine the "current state," pre-interventions. Countermeasures included: 1) customizing our CTP templates for each disease site to contain the specific clinical information required by each insurer, 2) formalizing earlier completion of CTPs through task automation at time of scheduling CT simulation in our Care Path, and 3) continuously refining our countermeasures based on monthly status updates and department meetings. We tracked various physician, authorization, and outcome-metrics between October 2022 and January 2023, including mean time for CTP completion, % usage of our Care Path, % usage of revised CTP templates, mean time until pre-auth initiated & completed, % of cases requiring peer-to-peer phone calls, and % of cases denied/delayed. RESULTS There were 417 patients from a variety of disease sites who had a CT simulation at our institution between October 1, 2022, and January 31, 2023. Mean time for CTP completion (from the time of CT simulation request) improved from 16 days at baseline to 7 days by the end of the project. In the beginning, only 5% of CTPs were completed within 2 days of scheduling the CT simulation, and this improved to 42-56% during the project period. Percent usage of the Care Path improved dramatically from 16% to 91%, as did % usage of our revised CTP templates, from 0% to 96%. Despite initial lag in pre-authorization team workflow changes, the % of pre-authorizations initiated by day 3 from CT request improved from 32% at baseline to 48% by month 4. Mean time to complete insurance pre-authorizations improved from 16 days at baseline to 10 days. The percent of cases requiring peer to peer or were denied was reduced significantly from 32% at baseline to 4-11%. CONCLUSION Improvingtimeliness and details of CTP documentation by using our Care Path and revising CTP templates improved efficiency of insurance pre-auth completion, and reduced the number of cases delayed/denied.
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Affiliation(s)
- M Tran
- Department of Radiation Oncology, Medical University of South Carolina, Charleston, SC
| | - K Shrake
- Medical University of South Carolina, Charleston, SC
| | - B S Chera
- Department of Radiation Oncology, Medical University of South Carolina, Charleston, SC
| | - B DePaoli
- Department of Radiation Oncology, Medical University of South Carolina, Charleston, SC
| | - E W Duffy
- Department of Radiation Oncology, Medical University of South Carolina, Charleston, SC
| | - M B Hall
- Department of Radiation Oncology, Medical University of South Carolina, Charleston, SC
| | - J S Steinman
- Department of Radiation Oncology, Medical University of South Carolina, Charleston, SC
| | - S Myers
- Department of Radiation Oncology, Medical University of South Carolina, Charleston, SC
| | - O S Igiebor
- Department of Radiation Oncology, Medical University of South Carolina, Charleston, SC
| | - L Sauls
- Department of Radiation Oncology, Medical University of South Carolina, Charleston, SC
| | - S Pratt
- Department of Radiation Oncology, Medical University of South Carolina, Charleston, SC
| | - J Callahan
- Department of Radiation Oncology, Medical University of South Carolina, Charleston, SC
| | - D G McDonald
- Department of Radiation Oncology, Medical University of South Carolina, Charleston, SC
| | - J L Harper
- Department of Radiation Oncology, Medical University of South Carolina, Charleston, SC
| | - S L Cooper
- Department of Radiation Oncology, Medical University of South Carolina, Charleston, SC
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Tran M, Ait Said K, Menahem B, Morello R, Tillou X. Urinary Lithiasis Risk Assessment after Bariatric Surgery. J Clin Med 2023; 12:4040. [PMID: 37373733 DOI: 10.3390/jcm12124040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2023] [Revised: 06/04/2023] [Accepted: 06/12/2023] [Indexed: 06/29/2023] Open
Abstract
Malabsorption is a consequence of gastric bypass (GB). GB increases the risk of kidney stone formation. This study aimed to evaluate the accuracy of a screening questionnaire for assessing the risk of lithiasis in this population. We performed a monocentric retrospective study to evaluate a screening questionnaire administered to patients who underwent gastric bypass surgery between 2014 and 2015. Patients were asked to answer a questionnaire that included 22 questions divided into four parts: medical history, episodes of renal colic before and after bypass surgery, and eating habits. A total of 143 patients were included in the study, and the mean age of the patients was 49.1 ± 10.8 years. The time between gastric bypass surgery and the completion of the questionnaire was 50.75 ± 4.95 months. The prevalence of kidney stones in the study population was 19.6%. We found that with a score of ≥6, the sensitivity and specificity were 92.9% and 76.5%, respectively. Positive and negative predictive values were 49.1% and 97.8%, respectively. The ROC curve showed an Area Under the Curve (AUC) of 0.932 ± 0.029 (p < 0.001). We developed a reliable and short questionnaire to identify patients at a high risk of kidney stones after gastric bypass. When the results of the questionnaire were equal to or greater than six, the patient was at a high risk of kidney stone formation. With a good predictive negative value, it could be used in daily practice to screen patients who have undergone gastric bypass and are at a high risk of renal lithiasis.
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Affiliation(s)
- Marie Tran
- Urology Department, CHU de Caen, Avenue de la Côte de Nacre, 14000 Caen, France
| | - Khelifa Ait Said
- Urology Department, CHU de Caen, Avenue de la Côte de Nacre, 14000 Caen, France
| | - Benjamin Menahem
- Abdominal Surgery Department, CHU de Caen, Avenue de la Côte de Nacre, 14000 Caen, France
| | - Rémy Morello
- Biostatistic and Clinical Research Department, CHU de Caen, Avenue de la Côte de Nacre, 14000 Caen, France
| | - Xavier Tillou
- Urology Department, CHU de Caen, Avenue de la Côte de Nacre, 14000 Caen, France
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Lefèvre C, Plocque A, Tran M, Creux M, Philippart F. [Should we interfere with the interleukin-6 receptor during COVID-19: What do we know?]. Rev Mal Respir 2023; 40:24-37. [PMID: 36577608 PMCID: PMC9791331 DOI: 10.1016/j.rmr.2022.11.085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Accepted: 11/30/2022] [Indexed: 12/13/2022]
Abstract
COVID-19 is a viral infection with predominant respiratory tropism. In its most severe forms, the initial viral aggression leads to acute respiratory failure due to damage secondary to an exacerbated inflammatory response provoked by the activation of innate, followed by adaptive immunity. The inflammatory response may entail respiratory distress syndrome, if not multivisceral failure and death. IL-6 receptor inhibitors (Tocilizumab and Sarilumab) have been proposed as treatments. Numerous studies have provided new information, which remains heterogeneous and difficult to interpret. This review is aimed at clarifying the potential role of IL-6 receptor inhibitors in severe forms of COVID-19.
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Affiliation(s)
- C. Lefèvre
- Medical and Surgical Intensive Care Unit, groupe hospitalier Paris Saint-Joseph, Paris, France
| | - A. Plocque
- Medical and Surgical Intensive Care Unit, groupe hospitalier Paris Saint-Joseph, Paris, France
| | - M. Tran
- Medical and Surgical Intensive Care Unit, groupe hospitalier Paris Saint-Joseph, Paris, France
| | - M. Creux
- Medical and Surgical Intensive Care Unit, groupe hospitalier Paris Saint-Joseph, Paris, France
| | - F. Philippart
- Medical and Surgical Intensive Care Unit, groupe hospitalier Paris Saint-Joseph, Paris, France,Endotoxins, Structures and Host Response, Department of Microbiology, Institute for Integrative Biology of the Cell, UMR 9891 CNRS-CEA-Paris Saclay University, 98190 Gif-sur-Yvette, France,Auteur correspondant
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Tran M, Yoon S, Teoh M, Andersen S, Lam PY, Purdue BW, Raghubar A, Hanson SJ, Devitt K, Jones K, Walters S, Monkman J, Kulasinghe A, Tuong ZK, Soyer HP, Frazer IH, Nguyen Q. A robust experimental and computational analysis framework at multiple resolutions, modalities and coverages. Front Immunol 2022; 13:911873. [PMID: 35967449 PMCID: PMC9373800 DOI: 10.3389/fimmu.2022.911873] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2022] [Accepted: 07/05/2022] [Indexed: 11/16/2022] Open
Abstract
The ability to study cancer-immune cell communication across the whole tumor section without tissue dissociation is needed, especially for cancer immunotherapy development, which requires understanding of molecular mechanisms and discovery of more druggable targets. In this work, we assembled and evaluated an integrated experimental framework and analytical process to enable genome-wide scale discovery of ligand-receptors potentially used for cellular crosstalks, followed by targeted validation. We assessed the complementarity of four different technologies: single-cell RNA sequencing and Spatial transcriptomic (measuring over >20,000 genes), RNA In Situ Hybridization (RNAscope, measuring 4-12 genes) and Opal Polaris multiplex protein staining (4-9 proteins). To utilize the multimodal data, we implemented existing methods and also developed STRISH (Spatial TRanscriptomic In Situ Hybridization), a computational method that can automatically scan across the whole tissue section for local expression of gene (e.g. RNAscope data) and/or protein markers (e.g. Polaris data) to recapitulate an interaction landscape across the whole tissue. We evaluated the approach to discover and validate cell-cell interaction in situ through in-depth analysis of two types of cancer, basal cell carcinoma and squamous cell carcinoma, which account for over 70% of cancer cases. We showed that inference of cell-cell interactions using scRNA-seq data can misdetect or detect false positive interactions. Spatial transcriptomics still suffers from misdetecting lowly expressed ligand-receptor interactions, but reduces false discovery. RNAscope and Polaris are sensitive methods for defining the location of potential ligand receptor interactions, and the STRISH program can determine the probability that local gene co-expression reflects true cell-cell interaction. We expect that the approach described here will be widely applied to discover and validate ligand receptor interaction in different types of solid cancer tumors.
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Affiliation(s)
- M. Tran
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD, Australia
| | - S. Yoon
- Genome Innovation Hub, The University of Queensland, Brisbane, QLD, Australia
| | - M. Teoh
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD, Australia
- The University of Queensland Diamantina Institute, Faculty of Medicine, The University of Queensland, Brisbane, QLD, Australia
| | - S. Andersen
- Genome Innovation Hub, The University of Queensland, Brisbane, QLD, Australia
- Institute for Molecular Bioscience (IMB) Sequencing Facility, Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD, Australia
| | - PY. Lam
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD, Australia
| | - B. W. Purdue
- Genome Innovation Hub, The University of Queensland, Brisbane, QLD, Australia
| | - A. Raghubar
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD, Australia
| | - SJ. Hanson
- School of Medical Science, Menzies Health Institute, Griffith University, Gold Coast, QLD, Australia
| | - K. Devitt
- The University of Queensland Diamantina Institute, Faculty of Medicine, The University of Queensland, Brisbane, QLD, Australia
| | - K. Jones
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD, Australia
| | - S. Walters
- School of Biomedical Sciences, The University of Queensland, Brisbane, QLD, Australia
| | - J. Monkman
- The University of Queensland Diamantina Institute, Faculty of Medicine, The University of Queensland, Brisbane, QLD, Australia
| | - A. Kulasinghe
- The University of Queensland Diamantina Institute, Faculty of Medicine, The University of Queensland, Brisbane, QLD, Australia
| | - ZK. Tuong
- The University of Queensland Diamantina Institute, Faculty of Medicine, The University of Queensland, Brisbane, QLD, Australia
- Molecular Immunity Unit, University of Cambridge Department of Medicine, Medical Research Council (MRC)-Laboratory of Molecular Biology, Brisbane, United Kingdom
- Cellular Genetics, Wellcome Sanger Institute, Hinxton, United Kingdom
| | - HP. Soyer
- The University of Queensland Diamantina Institute, Dermatology Research Center, The University of Queensland, Brisbane, QLD, Australia
| | - I. H. Frazer
- The University of Queensland Diamantina Institute, Faculty of Medicine, The University of Queensland, Brisbane, QLD, Australia
| | - Q. Nguyen
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD, Australia
- *Correspondence: Q. Nguyen,
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To MS, Lu L, Tran M, Chong C. Preferential reporting of significant p-values in radiology journal abstracts. Clin Radiol 2022; 77:743-748. [PMID: 35810024 DOI: 10.1016/j.crad.2022.05.025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Revised: 05/04/2022] [Accepted: 05/30/2022] [Indexed: 11/03/2022]
Abstract
AIM To assess the prevalence of publication bias in the radiology literature, data-mining techniques were used to extract p-values in abstracts published in key radiology journals over the past 20 years. MATERIALS AND METHODS A total of 34,699 abstracts published in Radiology, Investigative Radiology, European Radiology, American Journal of Roentgenology, and American Journal of Neuroradiology published between January 2000 and December 2019 were included in the analysis. Automated text mining using regular expressions was used to mine abstracts for p-values. RESULTS The text mining algorithm detected 43,489 p-values, the majority (82.4%) of which were reported as "significant", i.e., p<0.05. There has also been an increased propensity to report more p-values over time. The distribution of p-values showed a step change at the conventional significance threshold of 0.05. The odds ratio of a "significant" p-value being reported in the abstract compared to the full text was calculated to be 2.52 (95% confidence interval 1.78-3.58; p<0.001). Taken together, these results provide strong evidence for selective reporting of significant p-values in abstracts. CONCLUSION Statistically significant p-values are preferentially reported in radiology journal abstracts.
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Affiliation(s)
- M-S To
- Flinders Health and Medical Research Institute, Bedford Park, SA, Australia; Division of Surgery and Perioperative Medicine, Flinders Medical Centre, Bedford Park, SA, Australia.
| | - L Lu
- College of Medicine and Public Health, Flinders University, Bedford Park, SA, Australia
| | - M Tran
- Division of Surgery and Perioperative Medicine, Flinders Medical Centre, Bedford Park, SA, Australia
| | - C Chong
- South Australia Medical Imaging, Flinders Medical Centre, Bedford Park, SA, Australia
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Triantafillou T, HIckman C, Derick R, Tran M, Nikitos E, Kontopoulos G, Vasilopoulos I, Kostaras K, Mpotzaki D. O-123 FMEA analysis of an automatic integration of time-lapse incubators into electronic medical records using CHLOE(Fairtility) shows risk reduction through automation of data capture and processing. Hum Reprod 2022. [DOI: 10.1093/humrep/deac105.023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Study question
Can integrations and automatic data processing between time-lapse incubators and EMRs reduce the risks associated with manual moving of data from time-lapse incubators to EMRs
Summary answer
Redesigning data workflow using CHLOE(Fairtility) decreased risk occurrence and increased risk detection possibilities associated with embryo classification and selection to freeze, biopsy, transfer and discard.
What is known already
Decisions are made from information derived from time-lapse incubators. Clinically, embryologists decide which embryos (and when) are suitable for transfer, cryopreservation, biopsy, or discarding based on data derived from time-lapse incubators, manually annotated and summarised into the electronic medical record (EMR) where further information useful for embryo selection is stored. Manual movement of data from time-lapse incubators to EMRs is time-consuming, administrative, reduces the granularity of the data available and incurs risk of human-error inaccuracies. These challenges limit the possibilities of how this data can be used to optimise clinical decisions, improve the patient experience and proactively detect operational anomalies.
Study design, size, duration
Failure mode effects analysis (FMEA) analysis was carried out on the workflow integration into a large (>5000 cycles per annum) IVF centre following ESHRE guidelines for laboratory and time-lapse practice (ESHRE,2015,2020), comparing before and after the introduction of CHLOE(Fairtility). The FMEA analysis evaluated the possible data capture, processing and associated clinical decision risks from embryos entering to leaving the time-lapse incubator. The Risk Priority Number (RPN=likelihoodxseverityxdetection of incidence) was calculated for each failure mode (Rienzi,2015).
Participants/materials, setting, methods
Through authenticated REST API calls according to the OpenAPI standard, CHLOE(Fairtility) linked the treatment unique identifier from the EMR(LIVO, inhouse developed) to the time-lapse incubator, automatically processed the time-lapse data, captured quantitative and qualitative information (such as morphokinetic time points, PNs, cleavage and blastocyst morphological grades, unusual embryo developmental anomalies and prediction scores for blastulation and implantation) and automatically loaded into the EMR.
Main results and the role of chance
Before CHLOE(Fairtility), 8 process phases were identified, with 81 associated failure modes, among which 45 risks were given a moderate RPN [RPN>15, i.e. data entry error into the EMR; image feature detection missed (i.e. 2PNs, Inner Cell Mass, incorrectly diagnosing fragments as cells and vice versa; incorrectly diagnosing vacuoles as a PNs, asynchronous PNs missed),with consequences including inaccurate KPI monitoring (n = 20, RPN=4); reduced patient experience and increased stress (n = 18, RPN range 3-16); wrong embryo being selected (n = 42, RPN range 8-36). Wrong embryo selection had three possible consequences: viable embryo discarded leading to a reduction in efficacy of treatment; viable embryo not prioritised for transfer causing reduced chance of pregnancy, or increased time to pregnancy, increasing cost and emotional burden); euploid embryo not prioritised for biopsy, increasing cost. Overall, RPN ranged from 3 to 36.
After CHLOE(Fairtility), 51 failure modes were eliminated completely, including quantitative and qualitative morphokinetic annotations, entering data into the EMR for daily embryo grades, and embryo fate decisions. A further 22 failure modes had reduced RPN, including blastocyst morphological grading, number of PNs, identification of unusual embryo cleavages; with 30 low RPNs and 6 moderate RPNs. Implementation of CHLOE(Fairtility) reduced the highest RPN from 36 to 16.
Limitations, reasons for caution
FMEA is a proactive method to identify potential incidents in order to develop strategies to mitigate risks, forming part of a framework for responsible innovation. The likelihood of incidences were estimated based on a PUBMED literature review, personal experience and the experience of colleagues.
Wider implications of the findings
CHLOE(Fairtility) has the potential to eliminate risks that exist when manually moving data from time-lapse incubators to EMRs: time-consuming, administrative, reduced data granularity and human-error-based inaccuracies. CHLOE(Fairtility) optimises clinical decisions, providing an opportunity for personalised patient care, improved patient engagement, and the potential to detect operational non-conformities before impacting clinically.
Trial registration number
NA
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Affiliation(s)
| | - C HIckman
- Fairtility, Fairtility , Tel Aviv, Israel
| | - R Derick
- Fairtility, Fairtility , Tel Aviv, Israel
| | - M Tran
- Fairtility, Fairtility , Tel Aviv, Israel
| | - E Nikitos
- Institute Of Life- IASO, IVF , Athens, Greece
| | | | | | - K Kostaras
- Institute Of Life- IASO, IVF , Athens, Greece
| | - D Mpotzaki
- Institute Of Life- IASO, IVF , Athens, Greece
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Teruel Lopez J, Miret Lucio C, Lozano Zamora M, Escribá Suarez M, Benavent Martínez M, Crespo Simó J, Erlich I, Tran M, Bergelson N. P-269 A validation study for artificial intelligence (AI) compared with manual annotation, using donor eggs reveals that AI accurately predicts blastulation. Hum Reprod 2022. [DOI: 10.1093/humrep/deac107.258] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Study question
Are the annotations produced by AI comparable to manual annotations? Does AI accurately assess fertilisation checks, and predict embryo usage and blastulation compared to embryologists?
Summary answer
Automatic annotations by AI was consistent with manual annotations. AI implantation algorithms had strong prediction of blastulation and embryo usage.
What is known already
Currently, embryos are manually annotated for specific morphokinetic features during embryo development. This is a labour-intensive process, and dependent on training and experience, leading to inter and intra clinic variation.
The decision to transfer, freeze or discard embryos relies heavily on these annotations. It is paramount that we develop a tool that will provide consistency and accuracy in annotation and produce scores that can facilitate decisions around embryo usage.
AI has demonstrated its potential to achieve this, but first must be validated before its integration into clinical practice. There have been no such studies demonstrating this so far.
Study design, size, duration
Retrospective cohort study, that took place between September to December 2021 at a private fertility clinic in Spain. To control for embryo variability, this study only included 179 time-lapse videos for embryos created from donor eggs. This was based on the understanding that donor eggs are more likely to produce better quality blastocysts and embryos and thus will give the most optimal conditions for annotation in a validation framework.
Participants/materials, setting, methods
The same time-lapse cultured embryos were annotated manually and automatically by CHLOE(Fairtility, an AI-based tool). Manual and CHLOE annotations were compared to assess the strength of agreement (i) using intra-class correlation (ICC), and (ii) the proportion of corrections required at the pronuclei (PN) stage. AI accuracy in predicting blastulation at 30hours, and blastulation before 116 hours, was also assessed using AUC as the efficacy metric. Embryo usage was compared with the AI-generated ranking of embryos.
Main results and the role of chance
The majority of morphokinetic variables showed a very-strong agreement, with an ICC range of (0.81-1.00), namely for; tPNf, t2, t3, t5, t7, tSB, tB and tEB. Only t4 (0.5) showed a moderate agreement. On average (Mean+-Standard deviation), AI annotated t4 later than embryologists (36+-5vs39+-10 (hours)). All other variables fell within a strong ICC of (0.61-0.8). There were no very weak (0-0.2) or weak (0.21-0.4) variables. PN agreement between AI and embryologists was 93%: PN’s had to be corrected by an embryologist only 7%(n = 179) of the time.
AI predicted blastulation on day 3 with a high level of sensitivity 0.77 and specificity 0.82, (AUC: 0.84,p<0.0001). Furthermore, the blastulation score given on day 3 was a predictor of blastulation before 116 hours with a high sensitivity 0.77 and specificity 0.80, (AUC: 0.81,p<0.0001).
Similarly, AI-generated ranking accurately correlated with embryologist decisions to freeze, transfer or discard embryos, with an overall high sensitivity 0.88 and specificity 0.67, (AUC: 0.84,p<0.0001). A rank of 1 was seen in 14%(n = 113) of embryos, all of which were frozen or transferred. Some embryos that scored a rank of 2 were discarded, but this was significantly lower than those that scored a rank of 3 or more (3%vs32%,p=0.0004).
Limitations, reasons for caution
This study only included embryos from donor eggs. Furthermore, this study occurred at a single site and is planned to be replicated at several clinics. Where there are discrepancies between human and AI, further studies are required to determine the ground truth.
Wider implications of the findings
This study demonstrates an AI framework to safely introduce AI in the fertility clinic. AI will accurately annotate embryos and give reliable scores to predict good quality blastulation, and inform decisions around embryo usage determination. AI provides a time-effective, objective tool in decision-making, with the potential to optimise success.
Trial registration number
not applicable
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Affiliation(s)
| | - C Miret Lucio
- Equipo Médico Crespo, IVF Laboratory , Valencia, Spain
| | | | | | | | - J Crespo Simó
- Equipo Médico Crespo, Medical Director , Valencia, Spain
| | - I Erlich
- Fairtility, Clinical , Tel Aviv, Israel
| | - M Tran
- Fairtility, Clinical , Tel Aviv, Israel
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Leoni S, Basso T, Tran M, Schnée S, Fabre AL, Kasparian J, Wolf JP, Dubuis PH. Highly sensitive spore detection to follow real-time epidemiology of downy and powdery mildew. BIO Web Conf 2022. [DOI: 10.1051/bioconf/20225004003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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10
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Ng A, Nathan A, Campain N, Yuminaga Y, Mumtaz F, Gulamhusein A, Tran M, Barod R, Patki P. 1141 Robotic Assisted Surgery in Horseshoe Kidneys: A Safety and Feasibility Multicentre Case Series. Br J Surg 2021. [DOI: 10.1093/bjs/znab259.794] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Abstract
Introduction
Horseshoe kidneys (HSK) are the most common renal fusion abnormality. However, they are only present in 0.2% of the population. Due to anatomical variation in vasculature, ectopia and malrotation, surgery has traditionally been performed via an open approach. We aimed to assess the safety and feasibility of robot-assisted surgery for HSK.
Method
Six patients (four female, two male) with HSKs were operated on between 2016 and 2019 across two high-volume centres by high-volume surgeons. All operations were robot-assisted, with three partial nephrectomies and one nephroureterectomy for renal masses and two benign nephrectomies for non-functioning kidneys. 3D reconstruction using CT renal angiograms was used to help identify vasculature and tumour location (where appropriate).
Results
The median age was 53 years (IQR 47-58.3) and the median BMI was 25 (IQR 25-25.8). Median tumour size in the four patients with renal masses was 35.5 mm (IQR 25.3-44.8). Median console time was 120 minutes (IQR 117-172.5) and the median estimated blood loss was 150 mL (IQR 112.5-262.5). The median pre-operative eGFR was 76 (IQR 70-86.5) and median post-operative eGFR was 65.5 (IQR 59.3-80.8). All operations were uneventful, there were no perioperative transfusions and no complications reported. Length of stay was two days for all patients.
Conclusions
We report the largest series of mixed robotic-assisted surgery on HSK. Robotic surgery is safe and feasible for HSK in high-volume centres with acceptable perioperative outcomes. Further prospective, longer-term, multi-centre studies are required to evaluative if robotic surgery for HSK is superior to open surgery.
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Affiliation(s)
- A Ng
- UCL Medical School, University College London, London, United Kingdom
| | - A Nathan
- Department of Urology, Royal Free Hospital, London, United Kingdom
| | - N Campain
- Department of Urology, Royal Free Hospital, London, United Kingdom
| | - Y Yuminaga
- Consultant Urologist, Royal Perth Hospital, Perth, Australia
| | - F Mumtaz
- Department of Urology, Royal Free Hospital, London, United Kingdom
| | - A Gulamhusein
- Consultant Urological and Robotic Surgeon, The Christie NHS Foundation Trust, Manchester, United Kingdom
| | - M Tran
- Department of Urology, Royal Free Hospital, London, United Kingdom
| | - R Barod
- Department of Urology, Royal Free Hospital, London, United Kingdom
| | - P Patki
- Department of Urology, Royal Free Hospital, London, United Kingdom
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Tran M, Voronin GL, Roberts RF, Coupland JN, Ziegler GR, Harte FM. The effect of high-pressure jet processing on cocoa stability in chocolate milk. J Dairy Sci 2021; 104:11432-11441. [PMID: 34419273 DOI: 10.3168/jds.2021-20602] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Accepted: 07/08/2021] [Indexed: 11/19/2022]
Abstract
Fat-free chocolate milk formulations containing skim milk, cocoa powder, and sugar were thermally treated and then processed using high-pressure jet (HPJ) technology from 125 to 500 MPa. The rheological properties and stability of HPJ-treated chocolate milks were compared with controls (no HPJ processing) prepared both with and without added κ-carrageenan. As expected, carrageenan-free chocolate milk exhibited immediate phase separation of the cocoa powder, whereas formulations containing κ-carrageenan were stable for 14 d. An increased stability was observed with increasing HPJ processing pressure, with a maximum observed when chocolate milk was processed at 500 MPa. The apparent viscosity at 50 s-1 of HPJ-processed samples increased from ~3 mPa·s to ~9 mPa·s with increasing pressure, and shear-thinning behavior (n < 0.9) was observed for samples processed at HPJ pressures ≥250 MPa. We suggest that HPJ-induced structural changes in casein micelles and new casein-cocoa interactions increased cocoa stability in the chocolate milk. Because casein seemed to be the major component enhancing cocoa stability in HPJ-treated samples, a second study was conducted to determine the effect of additional micellar casein (1, 2, or 4%) and HPJ processing (0-500 MPa) on the stability of fat-free chocolate milk. Formulations with 4% micellar casein processed at 375 and 500 MPa showed no phase separation over a 14-d storage period at 4°C. The addition of micellar casein together with HPJ processing at 500 MPa resulted in a higher apparent viscosity (~17 mPa·s at 50s-1) and more pronounced shear-thinning behavior (n ≤ 0.81) compared with that without added micellar casein. The use of HPJ technology to improve the dispersion stability of cocoa provides the industry with a processing alternative to produce clean-label, yet stable, chocolate milk.
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Affiliation(s)
- M Tran
- Department of Food Science, Pennsylvania State University, University Park 16802
| | - G Lewis Voronin
- Department of Food Science, Pennsylvania State University, University Park 16802
| | - R F Roberts
- Department of Food Science, Pennsylvania State University, University Park 16802
| | - J N Coupland
- Department of Food Science, Pennsylvania State University, University Park 16802
| | - G R Ziegler
- Department of Food Science, Pennsylvania State University, University Park 16802
| | - F M Harte
- Department of Food Science, Pennsylvania State University, University Park 16802.
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Cartledge S, Rawstorn J, Tran M, Ryan P, Howden E, Jackson A. Throwing cardiac rehabilitation into the 21st Century: a focus group study exploring the impact of COVID-19 on cardiac rehabilitation delivery in Victoria, Australia. Eur J Cardiovasc Nurs 2021. [PMCID: PMC8344710 DOI: 10.1093/eurjcn/zvab060.069] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Funding Acknowledgements Type of funding sources: None. Background Cardiac rehabilitation (CR) education and exercise are predominantly delivered in group face-to-face settings. This delivery model was challenged during the COVID-19 pandemic due to government enforced lockdowns which restricted the delivery of these models of care. The Australian state of Victoria experienced the longest and most severe local restrictions and was in lockdown for approximately 26 weeks of 2020. Purpose We aimed to explore the experience, barriers and enablers of delivering CR during a pandemic, and identify strategies for future COVID-safe programs among cardiac rehabilitation clinicians. Methods Victorian members of the Australian Cardiovascular Health and Rehabilitation Association (ACRA) were invited to attend an exploratory qualitative online focus group in November 2020. An inductive thematic analysis was undertaken before deductively applying the Non-adoption, Abandonment, Scale-up, Spread and Sustainability (NASSS) framework to identify barriers and enablers for technology adoption in CR. Results 30 members participated in a 106 minute focus group. 17 members who provided demographics represented multiple disciplines (nursing n = 13, exercise physiology n = 3, physiotherapy n = 1) and geographical settings (metropolitan n = 10, regional n = 4, rural n = 3). Four main themes were identified: Consequences of sudden service delivery change; Technology use – challenges and benefits; Capacity (program and staff); and The way forward. The deductive NASSS analysis demonstrated the main challenges of continuing remotely delivered CR lie with all adopters (staff, patients, carers) and with organisations. Future CR strategies included the importance of resuming face-to-face programs but important barriers including finding capacity, particularly staffing, to run concurrent telehealth programs remain to be addressed. Conclusion The COVID-19 pandemic forced and expedited significant changes to CR delivery models. While clinicians agreed that delivery of CR via telehealth will continue, it is now timely to review remote models of care and plan how they will integrate alongside traditional face-to-face programs.
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Affiliation(s)
- S Cartledge
- Monash University, School of Public Health and Preventive Medicine, Melbourne, Australia
| | - J Rawstorn
- Deakin University, Institute for Physical Activity and Nutrition, Melbourne, Australia
| | - M Tran
- St Vincent"s Hospital, Cardiopulmonary Rehabilitation , Melbourne, Australia
| | - P Ryan
- Heart Foundation , Melbourne, Australia
| | - E Howden
- Baker Heart and Diabetes Institute, Melbourne, Australia
| | - A Jackson
- Australian Centre for Heart Health, Melbourne, Australia
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Campain N, Nathan A, Abu-Ghanem Y, Tran M, Patki P, Mumtaz F, Bex A, Barod R. High volume robotic assisted nephro-ureterectomy allows improved perioperative outcomes. Eur Urol 2021. [DOI: 10.1016/s0302-2838(21)01176-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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14
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Satish P, Kuusk T, Campain N, Abu-Ghanem Y, Neves J, Barod R, El-Sheikh S, Mumtaz F, Patki P, Tran M, Tran-Dang M, Grant L, Klatte T, Bex A. European Association of Urology COVID intermediate prioritisation group is poorly predictive of pathological high-risk among patients with renal tumours. Eur Urol 2021. [DOI: 10.1016/s0302-2838(21)00996-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Papadopoulou A, Campain N, Abu-Ghanem Y, Mumtaz F, Barod R, Tran M, Bex A, Patki P. Minimally Invasive Surgery (MIS) in simple nephrectomy – differences in perioperative outcomes based on infectious or noninfectious aetiology. Eur Urol 2021. [DOI: 10.1016/s0302-2838(21)00560-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Alexanian C, Liakos W, Toussi A, Kao J, Cheng MY, Wang EA, Nava J, Tran M, Marusina AI, Merleev AA, Leal AR, Fung MA, Le ST, Luxardi G, Maverakis E. Immune profiling of lupus miliaris disseminatus faciei and successful management with anti-tumour necrosis factor therapy. Clin Exp Dermatol 2021; 46:910-914. [PMID: 33864395 DOI: 10.1111/ced.14684] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Accepted: 04/12/2021] [Indexed: 11/29/2022]
Abstract
Lupus miliaris disseminatus faciei (LMDF) is a chronic inflammatory dermatosis of unknown aetiology, most often seen in young adults. Although many treatments for LMDF exist, treatment guidelines have not been developed, and response to therapy is generally unpredictable. We present the results of transcriptomic analysis of LMDF lesional skin, which revealed a variety of differentially expressed genes linking LMDF to alterations in innate and adaptive T helper 1 immunity. Immunohistochemical analysis was also performed, identifying similar changes in T-cell immune responses. Given evidence for increased tumour necrosis factor (TNF) pathway activity, our patient, who had previously been refractory to multiple treatments, was initiated on TNF inhibitor therapy with excellent response. This characterization of the LMDF immune response may lead to improved treatment of this condition.
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Affiliation(s)
- C Alexanian
- Departments of, Department of, Dermatology, University of California, Davis, Sacramento, CA, USA
| | - W Liakos
- Departments of, Department of, Dermatology, University of California, Davis, Sacramento, CA, USA
| | - A Toussi
- Departments of, Department of, Dermatology, University of California, Davis, Sacramento, CA, USA
| | - J Kao
- Departments of, Department of, Dermatology, University of California, Davis, Sacramento, CA, USA
| | - M Y Cheng
- Departments of, Department of, Dermatology, University of California, Davis, Sacramento, CA, USA
| | - E A Wang
- Department of Dermatology, Stanford University School of Medicine, Palo Alto, CA, USA
| | - J Nava
- Departments of, Department of, Dermatology, University of California, Davis, Sacramento, CA, USA
| | - M Tran
- Departments of, Department of, Dermatology, University of California, Davis, Sacramento, CA, USA
| | - A I Marusina
- Departments of, Department of, Dermatology, University of California, Davis, Sacramento, CA, USA
| | - A A Merleev
- Departments of, Department of, Dermatology, University of California, Davis, Sacramento, CA, USA
| | - A R Leal
- Departments of, Department of, Dermatology, University of California, Davis, Sacramento, CA, USA
| | - M A Fung
- Departments of, Department of, Dermatology, University of California, Davis, Sacramento, CA, USA.,Department of, Pathology, University of California, Davis, Sacramento, CA, USA
| | - S T Le
- Departments of, Department of, Dermatology, University of California, Davis, Sacramento, CA, USA
| | - G Luxardi
- Departments of, Department of, Dermatology, University of California, Davis, Sacramento, CA, USA
| | - E Maverakis
- Departments of, Department of, Dermatology, University of California, Davis, Sacramento, CA, USA
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Rahman J, Charalambous A, Aled L, Leonard X, Parsons C, Cole G, Sharma G, Skuse K, Tran M. From the lecture theatre to your digital device: Reflections on the production of educational podcasts within undergraduate psychiatry training. Eur Psychiatry 2021. [PMCID: PMC9480439 DOI: 10.1192/j.eurpsy.2021.2197] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
IntroductionThe COVID-19 pandemic has highlighted a need for engaging online resources to enrich psychiatry training for undergraduate medical students. Podcasting is a well-established digital communication platform utilised daily in a myriad of capacities, including education. A group of medical students were tasked with creating their own educational podcasts covering specific aspects of psychiatry.ObjectivesEach pair was set a sub-topic of psychiatry and utilised software to produce educational resources. The objective of this project was to reflect upon production as well as explore the efficacy of podcasting as a tool within undergraduate training.MethodsThe medical students conducted research and contacted experts within the field to contribute to their podcasts. The majority of the students then conducted reviews of the literature surrounding podcasting within medical education, which informed the production of their own podcasts. From this, it was discussed how this project could impact future practice, and indicated that podcasts may become crucial asynchronous learning tools in medical education.ResultsLiterature review and first-hand experience of podcast production enabled the students to appreciate the advantages of podcasting and the potential for its widespread future applications. Their wider reading revealed that podcast-using study participants outperformed or matched their peers in assessments, and overwhelmingly enjoyed using podcasts over traditional teaching methods.ConclusionsThe use of podcasting can complement traditional psychiatry training and appeal to a generation of digital natives that prefer this learning style. Podcast production is also an excellent revision method, highlighting the advantages of peer-to-peer education in both learning and increasing engagement with psychiatry.DisclosureNo significant relationships.
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Cartledge S, Rawstorn J, Ryan P, Tran M, Howden E, Jackson A. Cardiac Rehabilitation During COVID-19 in Victoria, Australia: Telehealth is Here to Stay but it is Not Without Challenges. A Focus Group Study. Heart Lung Circ 2021. [PMCID: PMC8608273 DOI: 10.1016/j.hlc.2021.06.406] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
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19
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Gulamhusein A, Berger L, Mumtaz F, Bex A, Barod R, Patki P, Tran M, Silva P, Kuusk T, Hyde E, Ourselin S. Clinical experience of using 3D models for pre and intraoperative guidance during robotic-assisted partial nephrectomy. EUR UROL SUPPL 2020. [DOI: 10.1016/s2666-1683(20)35861-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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20
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Tsai T, Perez-Alvarez I, Woo J, Tran M. Efficacy of HLA-compatible Platelet Transfusion for Patients with Acute Myeloid Leukemia Refractory to Platelet Transfusion. Am J Clin Pathol 2020. [DOI: 10.1093/ajcp/aqaa161.213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Introduction/Objective
Acute myeloid leukemia (AML) patients often require transfusion support during induction chemotherapy. Platelet transfusion refractoriness (PTR) may develop due to HLA alloimmunization. Management of immune-refractory patients with HLA-compatible platelet transfusions is labor intensive and associated with increased costs. The purpose of this study is to evaluate the efficacy of HLA-compatible platelet units in AML patients.
Methods
Newly diagnosed AML patients undergoing induction chemotherapy in our institute between 2015 and 2018 were identified. Platelet counts and platelet transfusion data from initiation of chemotherapy until platelet recovery (> 20K/µL and increased consistently) were extracted. A 24-hour posttransfusion corrected count increment (CCI) was calculated to evaluate the efficacy of each platelet transfusion. PTR was declared if a patient had a 24-hour CCI < 4K following two consecutive transfusions. Student’s t-test was used for statistical analysis. Results were presented as mean ± SE, * if p < 0.05.
Results
We identified 39 patients with newly diagnosed AML. PTR developed in 22/39 (56%) patients during induction chemotherapy. The average CCI was higher among those without PTR compared to those with PTR (8,408 ± 585 vs. 2,923 ± 360*), and overall platelet transfusion burden (in number of units) was lower (7.29 ± 1.0 vs. 18.55 ± 1.71*). HLA antibodies were identified in 3/22 (14%) PTR patients, as 6/22 (27%) were tested. The average CCI during HLA matched transfusions for these 3 patients was higher than that with random units (2,059 ± 149 vs. -126 ± 306*). Compared to HLA-negative PTR patients receiving random units, the average CCI for HLA-compatible transfusions was still lower, though not significantly (2,059 ± 149 vs. 3,099 ± 390, p = 0.33), while the number of HLA- compatible units transfused was significantly higher (31.0 ± 3.0 vs. 16.6 ± 1.45*).
Conclusion
In a cohort of newly diagnosed AML patients undergoing induction chemotherapy whose PTR was associated with detectable HLA antibodies, transfusion support with HLA-matched products did not lead to reduced overall platelet transfusion rates and CCI remains in the refractory range. This suggests that use of HLA matched platelets among newly diagnosed AML patients with PTR, even in the setting of detectable HLA antibodies, does not appear to result in reduced overall product utilization.
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Affiliation(s)
- T Tsai
- Pathology, UCI Medical Center, Irvine, California, UNITED STATES
| | - I Perez-Alvarez
- Pathology, UCI Medical Center, Irvine, California, UNITED STATES
| | - J Woo
- Pathology, UCI Medical Center, Irvine, California, UNITED STATES
| | - M Tran
- Pathology, UCI Medical Center, Irvine, California, UNITED STATES
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Cristea M, Frankel P, Synold T, Stewart D, Wang E, Jung A, Wilczynski S, Tran M, Konecny G, Eng M, Kilpatrick L, Chen YJ, Glaser S, Han E, Dellinger T, Hakim A, Lee S, Morgan R, Rodriguez L, Wakabayashi M. 863P A phase I study of mirvetuximab soravtansine (MIRV) and gemcitabine (G) in pts with selected FRα -positive solid tumours: Results in the endometrial cancer (EC) cohort. Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.08.1002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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22
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Hamidi R, Aralis H, Bruhn K, Deluca I, Nguyen K, Tran M, Patel M, Patel V, Cotliar J, Tan B, Sofen H, David C. 491 Interim results from a comparative method validation study evaluating the use of digital photographs versus in-person assessment of rosacea. J Invest Dermatol 2020. [DOI: 10.1016/j.jid.2020.03.500] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Le S, Marusina A, Toussi A, Downing L, Tran M, Maverakis N, Luxardi G, Tsoi A, Gudjonsson J, Merleev A, Maverakis E. 035 Biogeographical differences in gene segment usage. J Invest Dermatol 2020. [DOI: 10.1016/j.jid.2020.03.037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Mousavi Z, Tran M, Kuhlman KR. 0195 Social Determinants of Sleep: Inside Relationships with Significant Others. Sleep 2020. [DOI: 10.1093/sleep/zsaa056.193] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Introduction
Social relationships impact health through different mechanisms. Sleep problems are prevalent among adults in the USA, negatively impacting all-cause mortality, and increasing the risk for chronic diseases such as depression, cardiovascular disease, and cancer. This study aimed to assess whether the quality of an individual’s relationship with their significant other including support and strain, subjective relationship quality, joint decision making, marital risk, and conflict are associated with clinical, subjective, and objective measures of sleep.
Methods
Participants were selected from the Midlife in the United States (MIDUS) study if they had complete data on subjective sleep quality from the MIDUS II biomarker project and shared a bed with their partner (n=751, 49.5% female, Mage=53.4, SDage=11.2, range= 34–83). Subjective sleep quality was measured using the PSQI. A subset of these participants (n=246, 50.8% female) also completed 7-days of daily diary and actigraphy.
Results
Sleep disturbances were pervasive; 44.1% (n=331) of participants reported clinically meaningful sleep disturbances (PSQI>=5). Among the smaller sample of participants with 7-day sleep data, sleep disturbances were even more prevalent (60.9%). There were significant bivariate associations between higher support and lower strain with better subjectively and objectively sleep outcomes. Better subjective relationship quality was also associated with better subjectively measured sleep outcomes. Higher marital risk and more disagreement with partner were associated with poorer sleep. When accounting for all marital relationship factors, participants with higher support and lower strain given to partner had a better long-term sleep quality, b= 1.93, SE= .54, p<.001. Relationship quality was also associated with better daily sleep quality and daily reports of feeling rested, b = -.12, SE= .05, p=.023, and b= .11, SE = .048, p=.023, respectively. These relationships remained significant after accounting for age, current employment status, recent major health events, average daily caffeine, alcohol, exercise, and napping.
Conclusion
These findings support the importance of considering social determinants of sleep, suggesting that relationships with significant others may impact health through sleep quality. This highlights the importance of sleep as a transdiagnostic physiological mechanism that could be enhanced through improvements to relationships with significant others.
Support
N/A
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Affiliation(s)
- Z Mousavi
- University of California, Irvine, Irvine, CA
| | - M Tran
- University of California, Irvine, Irvine, CA
| | - K R Kuhlman
- University of California, Irvine, Irvine, CA
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Ha DH, Nguyen TN, Phan DV, Phu T, Tran M, Voznak M. Non-linear energy harvesting based power splitting relaying in full-duplex AF and DF relaying networks: system performance analysis. Proceedings of the Estonian Academy of Sciences 2020. [DOI: 10.3176/proc.2020.4.06] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Degroote T, Chhor V, Tran M, Philippart F, Bruel C. Cholécystite aiguë de réanimation. Méd Intensive Réa 2019. [DOI: 10.3166/rea-2019-0130] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2022]
Abstract
La cholécystite aiguë de réanimation (0,2 à 1 % des patients) est liée à des facteurs de risque spécifiques (jeûne, nutrition parentérale, ventilation mécanique) et systémiques (instabilité, brûlures graves, catécholamines) conduisant à des phénomènes d’ischémie-reperfusion de la paroi vésiculaire, à l’origine d’une cholécystite classiquement alithiasique. Toutefois, les données récentes retrouvent une participation lithiasique dans 50%des cas environ. Il s’agit d’une maladie grave dont le diagnostic est difficile et la mortalité élevée (40 %). Chez ces patients graves, aucun critère clinicobiologique ne permet un diagnostic de certitude. L’imagerie du patient de réanimation peut être prise à défaut par les anomalies fréquemment retrouvées en réanimation ; les signes les plus évocateurs sont un épaississement pariétal vésiculaire supérieur à 4 mm, un hydrocholécyste ou un défaut de rehaussement de la paroi au scanner. Le traitement en urgence repose sur une antibiothérapie à large spectre ciblée sur les germes digestifs et nosocomiaux ainsi que sur une optimisation hémodynamique. La cholécystectomie (laparoscopique, voire sous-costale) représente le traitement de référence en empêchant la récidive. Mais la gravité des patients amène souvent à envisager une solution moins lourde que la chirurgie avec un drainage de la vésicule. Le drainage par voie percutanée est l’alternative de choix en raison de sa disponibilité et de son efficacité, il existe toutefois un risque théorique de récidive à l’ablation du drain, surtout en cas de cholécystite lithiasique. Le drainage interne par voie endoscopique (transpapillaire ou transdigestif) est une possibilité prometteuse, mais réservée à l’heure actuelle aux centres experts.
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Jiang L, Ivich F, Tahsin S, Tran M, Frank SB, Miranti CK, Zohar Y. Human stroma and epithelium co-culture in a microfluidic model of a human prostate gland. Biomicrofluidics 2019; 13:064116. [PMID: 31768202 PMCID: PMC6867939 DOI: 10.1063/1.5126714] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2019] [Accepted: 11/11/2019] [Indexed: 05/10/2023]
Abstract
The prostate is a walnut-sized gland that surrounds the urethra of males at the base of the bladder comprising a muscular portion, which controls the release of urine, and a glandular portion, which secretes fluids that nourish and protect sperms. Here, we report the development of a microfluidic-based model of a human prostate gland. The polydimethylsiloxane (PDMS) microfluidic device, consisting of two stacked microchannels separated by a polyester porous membrane, enables long-term in vitro cocultivation of human epithelial and stromal cells. The porous separation membrane provides an anchoring scaffold for long-term culturing of the two cell types on its opposite surfaces allowing paracrine signaling but not cell crossing between the two channels. The microfluidic device is transparent enabling high resolution bright-field and fluorescence imaging. Within this coculture model of a human epithelium/stroma interface, we simulated the functional development of the in vivo human prostate gland. We observed the successful differentiation of basal epithelial cells into luminal secretory cells determined biochemically by immunostaining with known differentiation biomarkers, particularly androgen receptor expression. We also observed morphological changes where glandlike mounds appeared with relatively empty centers reminiscent of prostatic glandular acini structures. This prostate-on-a-chip will facilitate the direct evaluation of paracrine and endocrine cross talk between these two cell types as well as studies associated with normal vs disease-related events such as prostate cancer.
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Affiliation(s)
- L. Jiang
- Department of Aerospace & Mechanical Engineering, University of Arizona, Tucson, Arizona 85721, USA
- Author to whom correspondence should be addressed:
| | - F. Ivich
- Department of Biomedical Engineering, University of Arizona, Tucson, Arizona 85721, USA
| | | | - M. Tran
- Department of Biomedical Engineering, University of Arizona, Tucson, Arizona 85721, USA
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Vickers ML, Pelecanos A, Tran M, Eriksson L, Assoum M, Harris PN, Jaiprakash A, Parkinson B, Dulhunty J, Crawford RW. Association between higher ambient temperature and orthopaedic infection rates: a systematic review and meta-analysis. ANZ J Surg 2019; 89:1028-1034. [PMID: 30974508 DOI: 10.1111/ans.15089] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2018] [Revised: 12/29/2018] [Accepted: 01/05/2019] [Indexed: 12/18/2022]
Abstract
INTRODUCTION Many infectious diseases display seasonal variation corresponding with particular conditions. In orthopaedics a growing body of evidence has identified surges in post-operative infection rates during higher temperature periods. The aim of this research was to collate and synthesize the current literature on this topic. METHODS A systematic review and meta-analysis was performed using five databases (PubMed, Embase, CINAHL, Web of Science and Central (Cochrane)). Study quality was assessed using the Grading of Recommendations Assessment, Development and Evaluation method. Odds ratios (ORs) were calculated from monthly infection rates and a pooled OR was generated using the DerSimonian and Lairds method. A protocol for this review was registered with the National Institute for Health Research International Prospective Register of Systematic Reviews (CRD42017081871). RESULTS Eighteen studies analysing over 19 000 cases of orthopaedic related infection met inclusion criteria. Data on 6620 cases and 9035 controls from 12 studies were included for meta-analysis. The pooled OR indicated an overall increased odds of post-operative infection for patients undergoing orthopaedic procedures during warmer periods of the year (pooled OR 1.16, 95% confidence interval 1.04-1.30). CONCLUSION A small but significantly increased odds of post-operative infection may exist for orthopaedic patients who undergo procedures during higher temperature periods. It is hypothesized that this effect is geographically dependent and confounded by meteorological factors, local cultural variables and hospital staffing cycles.
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Affiliation(s)
- Mark L Vickers
- Biomedical Engineering and Clinical Sciences, Queensland University of Technology, Brisbane, Queensland, Australia.,Faculty of Medicine, The University of Queensland, Brisbane, Queensland, Australia
| | - Anita Pelecanos
- QIMR Berghofer Medical Research Institute, Brisbane, Queensland, Australia
| | - Marie Tran
- Faculty of Medicine, The University of Queensland, Brisbane, Queensland, Australia
| | - Lars Eriksson
- Herston Health Sciences Library, The University of Queensland, Brisbane, Queensland, Australia
| | - Mohamad Assoum
- Centre for Child Health Research, The University of Queensland, Brisbane, Queensland, Australia
| | - Patrick N Harris
- Faculty of Medicine, The University of Queensland, Brisbane, Queensland, Australia.,Infection Management Services, Princess Alexandra Hospital, Brisbane, Queensland, Australia.,Pathology Queensland, Central Laboratory, Brisbane, Queensland, Australia
| | - Anjali Jaiprakash
- Science and Engineering Faculty, Queensland University of Technology, Brisbane, Queensland, Australia
| | - Benjamin Parkinson
- School of Medicine, James Cook University, Townsville, Queensland, Australia.,Department of Orthopaedics, Cairns Base Hospital, Cairns, Queensland, Australia
| | - Joel Dulhunty
- UQ Centre for Clinical Research, The University of Queensland, Brisbane, Queensland, Australia.,Research and Medical Education, Redcliffe Hospital, Brisbane, Queensland, Australia
| | - Ross W Crawford
- Biomedical Engineering and Clinical Sciences, Queensland University of Technology, Brisbane, Queensland, Australia.,Orthopaedics Department, The Prince Charles Hospital, Brisbane, Queensland, Australia
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Miller D, Wrenn N, Tran M, Murala J, Gaskie K, Banga A, Torres F, Wait M. Establishing a Nursing-Led Ex-Vivo Lung Perfusion Program: A Primer. J Heart Lung Transplant 2019. [DOI: 10.1016/j.healun.2019.01.757] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
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30
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Hickman L, Tran M, Davidson E, Walters M, Ferrando C. 96: Pelvic organ prolapse recurrence in young women undergoing vaginal and abdominal colpopexy for the management of apical prolapse. Am J Obstet Gynecol 2019. [DOI: 10.1016/j.ajog.2019.01.126] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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31
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Tran M, Loirat D, Colas C, Bozec L, Laurence V, Lerebours F, Cabel L, Bidard FC, Stoppa-Lyonnet D, Vincent-Salomon A, Gauthier-Villars M, Lavigne M, De Pauw A. Abstract P1-09-07: Breast cancer characteristics and outcomes in patients with TP53 germline mutation. Cancer Res 2019. [DOI: 10.1158/1538-7445.sabcs18-p1-09-07] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Introduction
Li-Fraumeni syndrome (LFS) resulting from monoallelic germline TP53 gene mutation is a rare hereditary cancer predisposition. Breast cancer (BC) is the most common cancer among women with TP53 germline mutation with a risk ranging from 49% to 85% by the age of 60 years old. Most of these cancers are early onset. Few patients' cases have been reported so far in the literature. Our aim was to describe the medical history of a cohort of LFS women diagnosed with BC recruited from a single institution. The characteristics combined were genetic alteration diagnosis, tumor characteristics, treatment, outcome, and LFS associated cancers.
Methods
We retrospectively identified breast cancer patients with TP53 germline mutation from the Institut Curie (Paris, France) database and described their cancer characteristics and medical history.
Results
From 1989 to 2015, 25 patients affected with BC (31 tumors) and TP53 germline mutation carrier were identified, with a median follow up of 6.5 years. Median age at BC diagnosis was 30.5 years. All patients were women. 33% had a previously identified TP53 mutation in their family. 70% of them had BC as their first cancer event. 60% of the patients presented with another LFS associated cancer or non-related cancers: osteosarcoma (22%), glioblastoma (18%), pulmonary carcinoma (13%), gastric linitis plastica (9%), malignant hemopathy (9%), soft tissue sarcoma (9%), adrenocortical carcinoma (4%), ovarian cystadenocarcinoma (4%), renal tumor (4%), choroid plexus carcinoma (4%).
92% of the breast tumors were ductal carcinoma (28% DCIS and 64% IDC), 7% were sarcoma (1 phyllodesarcoma, 1 pleiomorphic liposarcoma); there were no lobular carcinoma. Among the IDC, 50% were HER2 positive, 72% were hormone-receptor positive.
Most patients had a mastectomy (64%), and most of them received radiation (55%). However, when TP53 mutation had been identified prior to the treatment, none of the patients received radiotherapy (5 patients). Most patients received chemotherapy (70%) (37% in neoadjuvant setting, 33% in adjuvant setting, 25% for metastatic setting). 40% of the patients received hormone therapy (37% as adjuvant treatment, 7% for metastatic disease)
Most of the patients did not relapse from BC (75%). Overall, only 17% of the patients had metastatic BC. To date, 12 patients of our series have died (48%), 6 patients (24%) from other LFS-associated cancers and 4 patients from BC (16%).
Conclusion
To the best of our knowledge, this descriptive series is the largest study of tumor characteristics and medical history of LFS-women with BC, the most frequent cancer among women with TP53 germline mutation. It confirms the higher HER2 overexpression rate observed in LFS-patients BC, as suggested in the literature and showed a high rate of DCIS at initial presentation. Most of the patients developed other LFS-associated cancers. In depth molecular analysis of these BC will be performed in order to gain insight into their biological specificities and to adapt the therapeutic management of this poor prognosis syndrome.
Citation Format: Tran M, Loirat D, Colas C, Bozec L, Laurence V, Lerebours F, Cabel L, Bidard F-C, Stoppa-Lyonnet D, Vincent-Salomon A, Gauthier-Villars M, Lavigne M, De Pauw A. Breast cancer characteristics and outcomes in patients with TP53 germline mutation [abstract]. In: Proceedings of the 2018 San Antonio Breast Cancer Symposium; 2018 Dec 4-8; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2019;79(4 Suppl):Abstract nr P1-09-07.
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Affiliation(s)
- M Tran
- Institut Curie, Paris, France
| | | | - C Colas
- Institut Curie, Paris, France
| | - L Bozec
- Institut Curie, Paris, France
| | | | | | - L Cabel
- Institut Curie, Paris, France
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32
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Nguyen TN, Tran M, Ha DH, Nguyen TL, Voznak M. Energy harvesting based two-way full-duplex relaying network over a Rician fading environment: performance analysis. Proc Estonian Acad Sci 2019. [DOI: 10.3176/proc.2019.1.11] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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33
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Tran M, Chan J, Worthington M. Material Properties of Chest Drain Tubes and Potential Effects on Postoperative Pain. Heart Lung Circ 2019. [DOI: 10.1016/j.hlc.2019.02.045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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34
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Nguyen TN, Tran M, Ha DH, Trang TT, Voznak M. Multi-source in DF cooperative networks with the PSR protocol based full-duplex energy harvesting over a Rayleigh fading channel: performance analysis. Proc Estonian Acad Sci 2019. [DOI: 10.3176/proc.2019.3.03] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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35
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Cowden A, Tran M, Dietzek A. Assessing the impact of specialty pharmacy interventions in obtaining sustained viral response (SVR) labs in Hepatitis C patients, in an urban, underserved population. J Drug Assess 2018. [DOI: 10.1080/21556660.2018.1521042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022] Open
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36
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Aron J, Chatelin F, Tagounit N, Barbot S, Tran M, Belley Epesse B, Ridel C. La simulation comme outil dans l’évaluation des besoins de formation des soignants sur la prise en charge d’un arrêt cardiaque en hémodialyse. Nephrol Ther 2018. [DOI: 10.1016/j.nephro.2018.07.107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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37
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Burke D, Ibekwe C, Jerome M, Tran M. Using Twitter to identify healthcare consumer sentiment. Ann Phys Rehabil Med 2018. [DOI: 10.1016/j.rehab.2018.05.1173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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38
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Tran M, Roberts R, Felix T, Harte F. Effect of high-pressure-jet processing on the viscosity and foaming properties of pasteurized whole milk. J Dairy Sci 2018; 101:3887-3899. [DOI: 10.3168/jds.2017-14103] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2017] [Accepted: 01/08/2018] [Indexed: 11/19/2022]
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39
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Bibby B, Tran M, Yang L, Lo F, Warren A, Shukla D, Osborne M, Hadfield J, Carroll T, Stark R, Scott H, Ramos-Montoya A, Massie C, Maxwell P, West C, Mills I, Neal D. EP-2298: Hypoxia inducible factor 1α confers androgen independence in prostate cancer. Radiother Oncol 2018. [DOI: 10.1016/s0167-8140(18)32607-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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40
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Tanabalan C, Neves J, Patki P, Mumtaz F, Ramachandran N, Grant L, Walkden M, Aitchison M, Tran M, Barod R. Routine renal mass biopsy in diagnosis of renal cancer. ACTA ACUST UNITED AC 2018. [DOI: 10.1016/s1569-9056(18)31145-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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41
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Tran M, Scalia G, Kwon A, Holt D, Kierle R, Holt G. Trans-Pulmonary Haemodynamics Using Exercise Stress Echocardiography Pulmonary to Left Atrial Ratio (ePLAR): A Comparison between Ironman Athletes, a Small Group of Age-Matched Controls, and a Large-Group General Community Cohort. Heart Lung Circ 2018. [DOI: 10.1016/j.hlc.2018.06.534] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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42
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Ragab M, Al-Hayek S, Tran M, Collie J, Armitage J, Wiseman O. Developing a Renal Stone Patient Reported Outcome Measures: stage 1, 2 & 3. Int J Surg 2017. [DOI: 10.1016/j.ijsu.2017.08.072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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43
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Soumyanarayanan A, Raju M, Gonzalez Oyarce AL, Tan AKC, Im MY, Petrović AP, Ho P, Khoo KH, Tran M, Gan CK, Ernult F, Panagopoulos C. Tunable room-temperature magnetic skyrmions in Ir/Fe/Co/Pt multilayers. Nat Mater 2017; 16:898-904. [PMID: 28714983 DOI: 10.1038/nmat4934] [Citation(s) in RCA: 171] [Impact Index Per Article: 24.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2016] [Accepted: 06/07/2017] [Indexed: 06/07/2023]
Abstract
Magnetic skyrmions are nanoscale topological spin structures offering great promise for next-generation information storage technologies. The recent discovery of sub-100-nm room-temperature (RT) skyrmions in several multilayer films has triggered vigorous efforts to modulate their physical properties for their use in devices. Here we present a tunable RT skyrmion platform based on multilayer stacks of Ir/Fe/Co/Pt, which we study using X-ray microscopy, magnetic force microscopy and Hall transport techniques. By varying the ferromagnetic layer composition, we can tailor the magnetic interactions governing skyrmion properties, thereby tuning their thermodynamic stability parameter by an order of magnitude. The skyrmions exhibit a smooth crossover between isolated (metastable) and disordered lattice configurations across samples, while their size and density can be tuned by factors of two and ten, respectively. We thus establish a platform for investigating functional sub-50-nm RT skyrmions, pointing towards the development of skyrmion-based memory devices.
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Affiliation(s)
- Anjan Soumyanarayanan
- Data Storage Institute, 2 Fusionopolis Way, 138634, Singapore
- Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, 637371, Singapore
| | - M Raju
- Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, 637371, Singapore
| | | | - Anthony K C Tan
- Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, 637371, Singapore
| | - Mi-Young Im
- Center for X-ray Optics, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
- Department of Emerging Materials Science, DGIST, Daegu 42988, Korea
| | - A P Petrović
- Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, 637371, Singapore
| | - Pin Ho
- Data Storage Institute, 2 Fusionopolis Way, 138634, Singapore
| | - K H Khoo
- Institute of High Performance Computing, 1 Fusionopolis Way, 138632, Singapore
| | - M Tran
- Data Storage Institute, 2 Fusionopolis Way, 138634, Singapore
| | - C K Gan
- Institute of High Performance Computing, 1 Fusionopolis Way, 138632, Singapore
| | - F Ernult
- Data Storage Institute, 2 Fusionopolis Way, 138634, Singapore
| | - C Panagopoulos
- Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, 637371, Singapore
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Abstract
Transfusion-related acute lung injury (TRALI) is a life-threatening complication of blood product transfusion characterized by sudden onset hypoxemic respiratory failure with bilateral lung infiltrates and non-cardiogenic pulmonary edema developing within 6 hours of transfusion. It is believed to be under-recognized, particularly among preterm neonates in whom co-existing developmental lung disease adds diagnostic complexity. Here we report the case of a preterm neonate who developed TRALI during a blood transfusion following PDA ligation.
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Affiliation(s)
- R G LaGrandeur
- Division of Neonatology, Department of Pediatrics, University of California Irvine Medical Center, Orange, CA, USA
| | - M Tran
- Department of Pathology, University of California Irvine Medical Center, Orange, CA, USA
| | - C Merchant
- Division of Neonatology, Department of Pediatrics, University of California Irvine Medical Center, Orange, CA, USA
| | - C Uy
- Division of Neonatology, Department of Pediatrics, University of California Irvine Medical Center, Orange, CA, USA
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45
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Tran M, Roberts DR, Harte FM. 0540 Effect of high pressure jet processing on the rheological properties of ice cream mix. J Anim Sci 2016. [DOI: 10.2527/jam2016-0540] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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46
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Desai VH, Anand S, Tran M, Kanneganti A, Vasudevan S, Seifert JL, Cheng J, Keefer EW, Romero-Ortega MI. Chronic sensory-motor activity in behaving animals using regenerative multi-electrode interfaces. Annu Int Conf IEEE Eng Med Biol Soc 2016; 2014:1973-6. [PMID: 25570368 DOI: 10.1109/embc.2014.6944000] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Regenerative peripheral nerve interfaces have been proposed as viable alternatives for the natural control and feel of robotic prosthetic limbs. We have developed a Regenerative Multi-electrode Interface (REMI) that guides re-growing axons through an electrode array deployed in the lumen of a nerve guide. While acute studies have shown the use of the REMI in the rat sciatic nerve, the quality of chronic signal recording has not been reported. Here we show that implantation of this interface in the sciatic nerve is stable with high quality recordings up to 120 days and failures mainly attributable to abiotic factors related to pedestal detachment and wire breakage. We further tested the interfacing of REMI with fascicles of the sciatic nerve that primarily innervate muscles (tibial) and skin (sural). When implanted into the tibial nerve, bursting activity was observed synchronous to stepping. However, implantation of REMI into the sural nerve failed due to its small size. While fascicles smaller than 300 μm are a challenge for regenerative interfacing, we show that a modified REMI can be used in an insertion mode to record sensory signals from skin. In summary, the REMI represents an effective tool for recording firing patterns of specific axon types during voluntary movement, which may be used to improve the motor control and sensory feedback in closed loop control systems for robotic prosthesis.
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47
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Phung H, Bauman A, Nguyen TV, Young L, Tran M, Hillman K. Risk factors for low birth weight in a socio-economically disadvantaged population: parity, marital status, ethnicity and cigarette smoking. Eur J Epidemiol 2016; 18:235-43. [PMID: 12800948 DOI: 10.1023/a:1023384213536] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Low birth weight (LBW) is a public health problem, because it is associated with increased risk of morbidity and mortality. The principal aim of this study was to assess risk factors for LBW in a large multi-ethnic and socio-economically disadvantaged population. Data from 3242 mothers, who attended the Well Baby Clinic (Southwestern Sydney, Australia) for the first time, were analysed in relation to their demographic characteristics and socio-economic indices. The overall birthweight was 3377 +/- 577 g (mean +/- SD). In multiple linear regression analysis, smoking during pregnancy, marital status, parity, and country of birth were independently associated with birth weight. According to this analysis, lower birth weight was associated with mothers who had smoked during pregnancy (by 215.2 +/- 18.6 g), who were single (46.9 +/- 21 g), and of Asian background (108.5 +/- 38.2 g). However, higher parity was associated with significantly higher birth weight. The presence of each factor was coded as 1 and the absence, 0. A 'risk score' was then derived by summing up the individual scores. When birth weight was classified as 'low birth weight' (defined as those with birth weight being less than 2500 g) or normal birth weight, the overall prevalence of LBW was 1.9%. Each unit increase in the risk score was associated with a 1.9-fold (95% confidence interval: 1.5-2.6) increase in the risk of LBW. These data suggest that apart from marital status, ethnicity and parity, maternal smoking is the single most important preventable risk factors for LBW.
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Affiliation(s)
- H Phung
- The Simpson Centre For Health Services Research, Liverpool Hospital, South Western Sydney Area Health Services, Faculty of Medicine University of New South Wales, Australia.
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48
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Bima C, Zimmitti G, Ongaro R, Szichta N, Iuliani R, Rolfo G, Warren J, Carbonell A, Tran H, Tran M, Zajkowska M, Hawthorne W, Tantia O, Chaudhuri T, Khanna S, Cavalini WP, Loureiro M, Loi K, Darecchio A, Violi V, Bocchi P, Kukleta JF, Augenstein V, Huntington C, Cox T, Lopez R, Heniford BT, Akiyama G, Uematsu D, Yamamoto K, Sugihara T, Magishi A. Topic: Recent Innovations in Hernia Surgery. Hernia 2015; 19 Suppl 1:S375-8. [PMID: 26518858 DOI: 10.1007/bf03355403] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Affiliation(s)
- C Bima
- Ospedale Cottolengo, Torino, Italy
| | | | - R Ongaro
- Ospedale Cottolengo, Torino, Italy
| | | | | | - G Rolfo
- Ospedale Cottolengo, Torino, Italy
| | - J Warren
- Greenville Health System, Greenville, USA
| | | | - H Tran
- University of Sydney, Sydney, Australia
| | - M Tran
- Sydney Hernia Specialists Clinic, Sydney, Australia
| | - M Zajkowska
- Sydney Hernia Specialists Clinic, Sydney, Australia
| | | | | | | | | | | | - M Loureiro
- Instituto Jacques Perissat, Curitiba, Brazil.,Mestrado em Biotecnologia, Universidade Positivo, Curitiba, Brazil
| | - K Loi
- St George Private Hospital, Sydney, Australia
| | - A Darecchio
- Parma University School of General Surgery, Fidenza, Italy
| | - V Violi
- Parma University School of General Surgery, Fidenza, Italy
| | - P Bocchi
- Valparma Hospital, Langhirano, Italy
| | - J F Kukleta
- Faculty of Medicine, University of Zurich, Zurich, Switzerland
| | - V Augenstein
- Department of GI and MInimally Invasive Surgery, Carolinas Medical Center, Charlotte, USA
| | - C Huntington
- Department of GI and MInimally Invasive Surgery, Carolinas Medical Center, Charlotte, USA
| | - T Cox
- Department of GI and MInimally Invasive Surgery, Carolinas Medical Center, Charlotte, USA
| | - R Lopez
- Department of Radiology, Carolinas Medical Center, Charlotte, USA
| | - B T Heniford
- Department of GI and MInimally Invasive Surgery, Carolinas Medical Center, Charlotte, USA
| | - G Akiyama
- Saku Advanced Care Center, Saku city, Japan
| | - D Uematsu
- Saku Advanced Care Center, Saku city, Japan
| | - K Yamamoto
- Saku Advanced Care Center, Saku city, Japan
| | - T Sugihara
- Saku Advanced Care Center, Saku city, Japan
| | - A Magishi
- Saku Advanced Care Center, Saku city, Japan
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49
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Mihluedo-Agbolan K, Akakpo-Numado GK, Boume MA, Gnassingbe K, Sanni YS, Metchihoungbe CS, Goudjo EU, Ndougsa I, Tekou AH, Tran H, Tran M, Zajkowska M, Hawthorne W, Costa T, Abdalla R, Garcia R, Costa R. Umbilical, Midline and Spigelian Hernia: What we Have to Do. Hernia 2015; 19 Suppl 1:S145-6. [PMID: 26518792 DOI: 10.1007/bf03355342] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Affiliation(s)
- K Mihluedo-Agbolan
- Department Of Paediatric Surgery, Sylvanus Olympio Teaching Hospital, Lome, Togo
| | - G K Akakpo-Numado
- Department Of Paediatric Surgery, Sylvanus Olympio Teaching Hospital, Lome, Togo
| | - M A Boume
- Department Of Paediatric Surgery, Sylvanus Olympio Teaching Hospital, Lome, Togo
| | - K Gnassingbe
- Department Of Paediatric Surgery, Sylvanus Olympio Teaching Hospital, Lome, Togo
| | - Y S Sanni
- Department Of Paediatric Surgery, Sylvanus Olympio Teaching Hospital, Lome, Togo
| | - C S Metchihoungbe
- Department Of Paediatric Surgery, Sylvanus Olympio Teaching Hospital, Lome, Togo
| | - E U Goudjo
- Department Of Paediatric Surgery, Sylvanus Olympio Teaching Hospital, Lome, Togo
| | - I Ndougsa
- Department Of Paediatric Surgery, Sylvanus Olympio Teaching Hospital, Lome, Togo
| | - A H Tekou
- Department Of Paediatric Surgery, Sylvanus Olympio Teaching Hospital, Lome, Togo
| | - H Tran
- University of Sydney, Australia
| | - M Tran
- Sydney Hernia Specialists Clinic, Sydney, Australia
| | - M Zajkowska
- Sydney Hernia Specialists Clinic, Sydney, Australia
| | | | - T Costa
- University of Sao Paulo, Sao Paulo, Brazil
| | - R Abdalla
- University of Sao Paulo, Sao Paulo, Brazil
| | - R Garcia
- Hospital sirio Libanes, Sao Paulo, Brazil
| | - R Costa
- Hospital sirio Libanes, Sao Paulo, Brazil
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50
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Ting F, Tran M, Böhm M, Siriwardana A, Van Leeuwen PJ, Haynes AM, Delprado W, Shnier R, Stricker PD. Focal irreversible electroporation for prostate cancer: functional outcomes and short-term oncological control. Prostate Cancer Prostatic Dis 2015; 19:46-52. [PMID: 26458959 DOI: 10.1038/pcan.2015.47] [Citation(s) in RCA: 66] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2015] [Accepted: 08/25/2015] [Indexed: 12/18/2022]
Abstract
BACKGROUND Current data on the use of irreversible electroporation (IRE) in the treatment of prostate cancer (PCa) is limited. We aim to evaluate the safety, short-term functional and oncological outcomes of focal IRE in low-intermediate risk PCa. METHODS Between February 2013 and May 2014, 32 consecutive men underwent IRE at a single centre. Patients with low-intermediate risk PCa who had not received previous PCa treatment were included for analysis. The tumour was ablated using 3-6 electrodes, ensuring a minimum 5-mm safety margin around the visible magnetic resonance imaging (MRI) lesion. Follow-up included recording Clavien complications, Expanded Prostate Cancer Index Composite (EPIC) questionnaires (baseline, 1.5, 3, 6 months), 6-month multi-parametric MRI (mp-MRI) and 7-month biopsy. Findings on mp-MRI and biopsy were sub-divided into infield, adjacent or outfield of the treatment zone. RESULTS Twenty-five men were included for final analysis. Safety follow-up revealed one Clavien Grade 3 complication and five Grade 1 complications. Functional follow-up confirmed no significant change in American Urological Association urinary symptom score, sexual or bowel function. Infield, there were no suspicious findings on mp-MRI (n=24) or biopsy (n=21) in all patients. Adjacent to the treatment zone, five (21%) had suspicious findings on mp-MRI with four (19%) proving to be significant on biopsy. Outfield, there were two (8%) with suspicious findings on mp-MRI and one (5%) significant finding on biopsy. For the five patients with significant findings on follow-up biopsy, one is awaiting repeat IRE, one had radical prostatectomy and three remained on active surveillance. CONCLUSIONS In selected patients with low-intermediate risk PCa, focal IRE appears to be safe with minimal morbidity. There were no infield recurrences and 76% of patients were histologically free of significant cancer at 8 months. Almost all recurrences were adjacent to the treatment zone, and this was addressed by widening the treatment margins.
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Affiliation(s)
- F Ting
- St Vincent's Prostate Cancer Centre, Darlinghurst, NSW, Australia.,Garvan Institute of Medical Research/The Kinghorn Cancer Centre, Darlinghurst, NSW, Australia.,School of Medicine, University of New South Wales, Sydney, NSW, Australia
| | - M Tran
- St Vincent's Prostate Cancer Centre, Darlinghurst, NSW, Australia.,Garvan Institute of Medical Research/The Kinghorn Cancer Centre, Darlinghurst, NSW, Australia.,School of Medicine, University of New South Wales, Sydney, NSW, Australia
| | - M Böhm
- Garvan Institute of Medical Research/The Kinghorn Cancer Centre, Darlinghurst, NSW, Australia
| | - A Siriwardana
- St Vincent's Prostate Cancer Centre, Darlinghurst, NSW, Australia.,Garvan Institute of Medical Research/The Kinghorn Cancer Centre, Darlinghurst, NSW, Australia.,School of Medicine, University of New South Wales, Sydney, NSW, Australia
| | - P J Van Leeuwen
- St Vincent's Prostate Cancer Centre, Darlinghurst, NSW, Australia.,Garvan Institute of Medical Research/The Kinghorn Cancer Centre, Darlinghurst, NSW, Australia
| | - A M Haynes
- Garvan Institute of Medical Research/The Kinghorn Cancer Centre, Darlinghurst, NSW, Australia
| | - W Delprado
- Douglass Hanly Moir Pathology, Macquarie Park, NSW, Australia
| | - R Shnier
- Southern Radiology, Randwick, NSW, Australia
| | - P D Stricker
- St Vincent's Prostate Cancer Centre, Darlinghurst, NSW, Australia.,Garvan Institute of Medical Research/The Kinghorn Cancer Centre, Darlinghurst, NSW, Australia.,School of Medicine, University of New South Wales, Sydney, NSW, Australia
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