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O'Rourke J, Todd A, Shekhar C, Forde C, Pallan A, Wadhwani S, Tripathi D, Mahon BS. EUS-Guided Thrombin Injection and Coil Implantation for Gastric Varices: Feasibility, Safety, and Outcomes. Gastrointest Endosc 2024:S0016-5107(24)00088-9. [PMID: 38316226 DOI: 10.1016/j.gie.2024.01.044] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Revised: 01/07/2024] [Accepted: 01/28/2024] [Indexed: 02/07/2024]
Abstract
BACKGROUND AND AIMS Gastric varices (GV) are reported in up to 20% of patients with portal hypertension, and bleeding is often more severe and challenging than oesophageal variceal bleeding. There is limited data on prophylaxis of GV bleeding or management in the acute setting, and different techniques are utilised. This study aims to evaluate outcomes following endoscopic ultrasound (EUS) guided placement of coils in combination with thrombin to manage GV. METHODS We retrospectively reviewed all patients treated with combination EUS-guided therapy with coils and thrombin between October 2015 and February 2020. RESULTS 20 patients underwent 33 procedures for GV therapy; 16/20 (80%) were type 1 Isolated GV (IGV1), and the remainder were type 2 Gastroesophageal Varices (GOV2). Median follow-up was 842 days (Interquartile range (IQR) 483-961). 17/20 (85%) had underlying cirrhosis, the most common aetiologies being alcohol-related liver disease and non-alcoholic steatohepatitis (NASH). The median Child-Pugh (CP) score was 6 (IQR 5-7). In 11/20 (55%) cases, the indication was secondary prophylaxis to prevent rebleeding; in 2/20 (10%), the bleeding was acute. Technical success was achieved in 19/20 (95%) of cases. During follow-up, the obliteration of flow within the varices was achieved in 17/20 (85%) cases. The 6-week survival was 100%, and 2 adverse events were reported: cases of rebleeding at day 5 and day 37; both rebleeds were successfully managed endoscopically. CONCLUSIONS EUS-guided GV obliteration combining coil placement with thrombin, in our experience, is technically safe with good medium-term efficacy. A multicenter randomised controlled trial comparing different treatment strategies would be desirable to understand options better.
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Affiliation(s)
- Joanne O'Rourke
- University Hospitals Birmingham NHS Foundation Trust, Mindelsohn Way, Edgbaston, Birmingham B15 2GW.
| | - Andrew Todd
- University Hospitals Birmingham NHS Foundation Trust, Mindelsohn Way, Edgbaston, Birmingham B15 2GW.
| | - Chander Shekhar
- University Hospital Coventry & Warwickshire, Clifford Bridge Rd, Coventry CV2 2DX.
| | - Colm Forde
- University Hospitals Birmingham NHS Foundation Trust, Mindelsohn Way, Edgbaston, Birmingham B15 2GW.
| | - Arvind Pallan
- University Hospitals Birmingham NHS Foundation Trust, Mindelsohn Way, Edgbaston, Birmingham B15 2GW.
| | - Sharan Wadhwani
- University Hospitals Birmingham NHS Foundation Trust, Mindelsohn Way, Edgbaston, Birmingham B15 2GW.
| | - Dhiraj Tripathi
- University Hospitals Birmingham NHS Foundation Trust, Mindelsohn Way, Edgbaston, Birmingham B15 2GW.
| | - Brinder Singh Mahon
- University Hospitals Birmingham NHS Foundation Trust, Mindelsohn Way, Edgbaston, Birmingham B15 2GW.
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Pande R, Liu W, Raza SS, Papamichail M, Suthananthan AE, Bartlett DC, Marudanayagam R, Dasari BVM, Sutcliffe RP, Roberts KJ, Wadhwani S, Chatzizacharias N. Staging Computed Tomography Parameters Predict the Need for Vein Resection during Pancreaticoduodenectomy in Resectable Pancreatic Ductal Adenocarcinoma. Diagnostics (Basel) 2024; 14:135. [PMID: 38248012 PMCID: PMC10814156 DOI: 10.3390/diagnostics14020135] [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: 12/11/2023] [Revised: 12/30/2023] [Accepted: 01/03/2024] [Indexed: 01/23/2024] Open
Abstract
BACKGROUND Surgery-first approach is the current standard of care for resectable pancreatic ductal adenocarcinoma (PDAC), and a proportion of these cases will require venous resection. This study aimed to identify parameters on staging computed tomography (CT) that predict the need for venous resection during pancreaticoduodenectomy (PD) for resectable PDAC. METHODS We conducted a retrospective analysis of prospectively collected data on patients who underwent PD for resectable staged PDAC (as per NCCN criteria) between 2011 and 2020. Staging CTs were independently reviewed by two specialist radiologists blinded to the clinical outcomes. Univariate and multivariate risk analyses were performed. RESULTS In total, 296 PDs were included. Venous resection was performed in 62 (21%) cases. There was a higher rate of resection margin positivity in the vein resection group (72.6% vs. 48.7%, p = 0.001). Tumour at the neck of the pancreas, superior mesenteric vein involvement of ≥10 mm and pancreatic duct dilatation were identified as independent predictors for venous resection. DISCUSSION Staging CT parameters can predict the need for venous resection during PD for resectable cases of PDAC. This may assist in surgical planning, patient selection and counselling. Future efforts should concentrate on validating these results or identifying additional predictors in a multicentre and prospective setting.
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Affiliation(s)
- Rupaly Pande
- Department of HPB and Liver Transplant Surgery, Queen Elizabeth Hospital, University Hospitals Birmingham NHS Foundation Trust, Birmingham B15 2TT, UK; (R.P.); (S.S.R.); (M.P.); (A.E.S.); (D.C.B.); (R.M.); (B.V.M.D.); (R.P.S.); (K.J.R.)
| | - Wingyan Liu
- Department of Radiology, Queen Elizabeth Hospital, University Hospitals Birmingham NHS Foundation Trust, Birmingham B15 2TT, UK; (W.L.); (S.W.)
| | - Syed S. Raza
- Department of HPB and Liver Transplant Surgery, Queen Elizabeth Hospital, University Hospitals Birmingham NHS Foundation Trust, Birmingham B15 2TT, UK; (R.P.); (S.S.R.); (M.P.); (A.E.S.); (D.C.B.); (R.M.); (B.V.M.D.); (R.P.S.); (K.J.R.)
| | - Michail Papamichail
- Department of HPB and Liver Transplant Surgery, Queen Elizabeth Hospital, University Hospitals Birmingham NHS Foundation Trust, Birmingham B15 2TT, UK; (R.P.); (S.S.R.); (M.P.); (A.E.S.); (D.C.B.); (R.M.); (B.V.M.D.); (R.P.S.); (K.J.R.)
| | - Arul E. Suthananthan
- Department of HPB and Liver Transplant Surgery, Queen Elizabeth Hospital, University Hospitals Birmingham NHS Foundation Trust, Birmingham B15 2TT, UK; (R.P.); (S.S.R.); (M.P.); (A.E.S.); (D.C.B.); (R.M.); (B.V.M.D.); (R.P.S.); (K.J.R.)
| | - David C. Bartlett
- Department of HPB and Liver Transplant Surgery, Queen Elizabeth Hospital, University Hospitals Birmingham NHS Foundation Trust, Birmingham B15 2TT, UK; (R.P.); (S.S.R.); (M.P.); (A.E.S.); (D.C.B.); (R.M.); (B.V.M.D.); (R.P.S.); (K.J.R.)
| | - Ravi Marudanayagam
- Department of HPB and Liver Transplant Surgery, Queen Elizabeth Hospital, University Hospitals Birmingham NHS Foundation Trust, Birmingham B15 2TT, UK; (R.P.); (S.S.R.); (M.P.); (A.E.S.); (D.C.B.); (R.M.); (B.V.M.D.); (R.P.S.); (K.J.R.)
| | - Bobby V. M. Dasari
- Department of HPB and Liver Transplant Surgery, Queen Elizabeth Hospital, University Hospitals Birmingham NHS Foundation Trust, Birmingham B15 2TT, UK; (R.P.); (S.S.R.); (M.P.); (A.E.S.); (D.C.B.); (R.M.); (B.V.M.D.); (R.P.S.); (K.J.R.)
| | - Robert P. Sutcliffe
- Department of HPB and Liver Transplant Surgery, Queen Elizabeth Hospital, University Hospitals Birmingham NHS Foundation Trust, Birmingham B15 2TT, UK; (R.P.); (S.S.R.); (M.P.); (A.E.S.); (D.C.B.); (R.M.); (B.V.M.D.); (R.P.S.); (K.J.R.)
| | - Keith J. Roberts
- Department of HPB and Liver Transplant Surgery, Queen Elizabeth Hospital, University Hospitals Birmingham NHS Foundation Trust, Birmingham B15 2TT, UK; (R.P.); (S.S.R.); (M.P.); (A.E.S.); (D.C.B.); (R.M.); (B.V.M.D.); (R.P.S.); (K.J.R.)
- Institute of Immunology and Immunotherapy, University of Birmingham, Birmingham B15 2TT, UK
| | - Sharan Wadhwani
- Department of Radiology, Queen Elizabeth Hospital, University Hospitals Birmingham NHS Foundation Trust, Birmingham B15 2TT, UK; (W.L.); (S.W.)
| | - Nikolaos Chatzizacharias
- Department of HPB and Liver Transplant Surgery, Queen Elizabeth Hospital, University Hospitals Birmingham NHS Foundation Trust, Birmingham B15 2TT, UK; (R.P.); (S.S.R.); (M.P.); (A.E.S.); (D.C.B.); (R.M.); (B.V.M.D.); (R.P.S.); (K.J.R.)
- College of Medical and Dental Sciences, University of Birmingham, Birmingham B15 2TT, UK
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Odedra K, Wadhwani S. Tissue is the Issue: Current Status of Image-guided Biopsy. Clin Oncol (R Coll Radiol) 2023:S0936-6555(23)00457-0. [PMID: 38105169 DOI: 10.1016/j.clon.2023.11.042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2023] [Revised: 08/01/2023] [Accepted: 11/29/2023] [Indexed: 12/19/2023]
Affiliation(s)
- K Odedra
- West Midlands School of Radiology, Midlands Imaging Academy, City Hospital, Birmingham, UK
| | - S Wadhwani
- Queen Elizabeth Hospital, Birmingham, UK.
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Newman A, Gamage R, Plowright J, Wadhwani S. Quality of radiology in determining the dominant stricture in patients with primary sclerosing cholangitis. Clin Radiol 2022. [DOI: 10.1016/j.crad.2022.09.004] [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: 11/06/2022]
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Bari H, Wadhwani S, Dasari BVM. Role of artificial intelligence in hepatobiliary and pancreatic surgery. World J Gastrointest Surg 2021; 13:7-18. [PMID: 33552391 PMCID: PMC7830072 DOI: 10.4240/wjgs.v13.i1.7] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Revised: 12/08/2020] [Accepted: 12/17/2020] [Indexed: 02/06/2023] Open
Abstract
Over the past decade, enhanced preoperative imaging and visualization, improved delineation of the complex anatomical structures of the liver and pancreas, and intra-operative technological advances have helped deliver the liver and pancreatic surgery with increased safety and better postoperative outcomes. Artificial intelligence (AI) has a major role to play in 3D visualization, virtual simulation, augmented reality that helps in the training of surgeons and the future delivery of conventional, laparoscopic, and robotic hepatobiliary and pancreatic (HPB) surgery; artificial neural networks and machine learning has the potential to revolutionize individualized patient care during the preoperative imaging, and postoperative surveillance. In this paper, we reviewed the existing evidence and outlined the potential for applying AI in the perioperative care of patients undergoing HPB surgery.
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Affiliation(s)
- Hassaan Bari
- Department of HPB and Liver Transplantation Surgery, Queen Elizabeth Hospital, Birmingham B15 2TH, United Kingdom
| | - Sharan Wadhwani
- Department of Radiology, Queen Elizabeth Hospital, Birmingham B15 2TH, United Kingdom
| | - Bobby V M Dasari
- Department of HPB and Liver Transplantation Surgery, Queen Elizabeth Hospital, Birmingham B15 2TH, United Kingdom
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Wadhwani S, Fatima M, Massod M, Illhi M, Ahmed S. Antimicrobial resistance patterns of Salmonella typhi – An immense global threat isolated from blood culture in District Hyderabad. Int J Infect Dis 2020. [DOI: 10.1016/j.ijid.2020.09.085] [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] Open
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Nerad E, Delli Pizzi A, Lambregts DMJ, Maas M, Wadhwani S, Bakers FCH, van den Bosch HCM, Beets-Tan RGH, Lahaye MJ. The Apparent Diffusion Coefficient (ADC) is a useful biomarker in predicting metastatic colon cancer using the ADC-value of the primary tumor. PLoS One 2019; 14:e0211830. [PMID: 30721268 PMCID: PMC6363286 DOI: 10.1371/journal.pone.0211830] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2018] [Accepted: 01/21/2019] [Indexed: 12/13/2022] Open
Abstract
Purpose To investigate the role of the apparent diffusion coefficient (ADC) as a potential imaging biomarker to predict metastasis (lymph node metastasis and distant metastasis) in colon cancer based on the ADC-value of the primary tumor. Methods Thirty patients (21M, 9F) were included retrospectively. All patients received a 1.5T MRI of the colon including T2 and DWI sequences. ADC maps were calculated for each patient. An expert reader manually delineated all colon tumors to measure mean ADC and histogram metrics (mean, min, max, median, standard deviation (SD), skewness, kurtosis, 5th-95th percentiles) were calculated. Advanced colon cancer was defined as lymph node mestastasis (N+) or distant metastasis (M+). The student Mann Whitney U-test was used to assess the differences between the ADC means of early and advanced colon cancer. To compare the accuracy of lymph node metastasis (N+) prediction based on morpholigical criteria versus ADC-value of the primary tumor, two blinded readers, determined the lymph node metastasis (N0 vs N+) based on morphological criteria. The sensitivity and specificity in predicting lymph node metastasis was calculated for both readers and for the ADC-value of the primary tumor, with histopathology results as the gold standard. Results There was a significant difference between the mean ADC-value of advanced versus early tumors (p = 0.002). The optimal cut off value was 1179 * 10−3 mm2/s with an area under the curve (AUC) of 0.83 and a sensitivity and specificity of 81% and 86% respectively to predict advanced tumors. Histogram analyses did not add any significant additional value. The sensitivity and specificity for the prediction of lymph node metastasis based on morphological criteria were 40% and 63% for reader 1 and 30% and 88% for reader 2 respectively. The primary tumor ADC-value using 1.179 * 10−3 mm2/s as threshold had a 100% sensitivity and specificity in predicting lymph node metastasis. Conclusion The ADC-value of the primary tumor has the potential to predict advanced colon cancer, defined as lymph node metastasis or distant metastasis, with lower ADC values significantly associated with advanced tumors. Furthermore the ADC-value of the primary tumor increases the prediction accuracy of lymph node metastasis compared with morphological criteria.
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Affiliation(s)
- Elias Nerad
- University of Maastricht and GROW School of Oncology and Developmental Biology, Maastricht, The Netherlands
- Department of Radiology, The Netherlands Cancer Institute, Amsterdam, The Netherlands
- Department of Radiology, Addenbrookes Hospital Cambridge University Hospitals NHS trust, Cambridge, United Kingdom
- * E-mail:
| | - Andrea Delli Pizzi
- Institute for Advanced Biomedical Technology (ITAB), Gabriele d'Annunzio University, Chieti, Italy
| | | | - Monique Maas
- Department of Radiology, The Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - Sharan Wadhwani
- Department of radiology, Queen Elizabeth Hospital, University Birmingham Hospitals NHS trust, Birmingham, United Kingdom
| | - Frans C. H. Bakers
- Department of Radiology, Maastricht University Medical Centre, Maastricht, The Netherlands
| | | | - Regina G. H. Beets-Tan
- University of Maastricht and GROW School of Oncology and Developmental Biology, Maastricht, The Netherlands
- Department of Radiology, The Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - Max J. Lahaye
- Department of Radiology, The Netherlands Cancer Institute, Amsterdam, The Netherlands
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Lake ES, Wadhwani S, Subar D, Kauser A, Harris C, Chang D, Lapsia S. The influence of FDG PET-CT on the detection of extrahepatic disease in patients being considered for resection of colorectal liver metastasis. Ann R Coll Surg Engl 2014; 96:211-5. [PMID: 24780786 DOI: 10.1308/003588414x13814021679195] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
INTRODUCTION The aim of this study was to evaluate the influence of flurodeoxyglucose positron emission tomography computed tomography (FDG PET-CT), as an adjunct to conventional CT staging, in the detection of extrahepatic disease in patients with potentially resectable colorectal liver metastasis. METHODS Overall, 133 consecutive patients with colorectal liver metastases staged with CT and PET-CT referred to the East Lancashire regional hepatobiliary multidisciplinary team over a two-year period were included in this study. Abnormal findings on PET-CT were correlated with follow-up imaging and/or histology. All imaging was reviewed by specialist hepatobiliary radiologists for the presence/absence of extrahepatic disease. The influence of the PET-CT findings was categorised for each patient in relation to operability and other significant findings. RESULTS PET-CT had a major impact on staging of extra hepatic disease in 20% of patients, in comparison with the initial CT. Six per cent of patients were upstaged from operable CT findings to inoperable findings on PET-CT because of the discovery of inoperable occult extrahepatic disease. Five per cent had operable local regional nodal disease detected on PET-CT. A further 3% had premalignant colorectal lesions detected on PET-CT. Six per cent of patients were downstaged from indeterminate or suspected inoperable CT findings to operable findings on PET-CT. CONCLUSIONS The use of PET-CT in this setting may prevent futile operations, guide the resection of local regional nodal disease and downstage a number of patients thought to have extrahepatic disease on conventional imaging. This study has shown similar results to other recent studies and supports the use of PET-CT as a necessary staging modality in patients with potentially resectable colorectal liver metastases.
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Affiliation(s)
- E S Lake
- East Lancashire Hospitals NHS Trust, UK
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Dowlatshahi K, Wadhwani S, Alvarado R, Valadez C, Dieschbourg J. Interstitial Laser Therapy of Breast Fibroadenomas With 6 and 8 Year Follow-Up. Breast J 2010; 16:73-6. [DOI: 10.1111/j.1524-4741.2009.00830.x] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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Alvarado R, Mahon B, Valadez C, Caufield M, Wadhwani S, Hambleton C, Siziopikou KP, Dickler AT, Gatta J, Dowlatshahi K. Thermal ablation of the goat mammary gland as a model for post-lumpectomy treatment of breast cancer: preliminary observations. Int J Hyperthermia 2009; 25:47-55. [PMID: 19219700 DOI: 10.1080/02656730802322946] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
Abstract
BACKGROUND Partial breast irradiation post-lumpectomy, with a balloon bearing a radioactive source in its center, is practiced as an alternative to whole breast irradiation in the treatment of breast cancer. The goal is to ablate residual malignant cells within 1 cm radius of the resected lumpectomy margin. We hypothesize that this goal may be achieved with a fluid-filled heated balloon. METHODS Nubian-cross goats were treated under general anesthesia. The two mammary glands were sequentially bisected and a non-inflated balloon with a heating element was placed in the center of the gland which was re-sutured. Two series of experiments were conducted. In the first 22 goats (44 glands), the balloon was inflated with 5% dextrose to a pressure of 150 mmHg and heated at 87 degrees C over selected time intervals of 1-24 minutes. In the second series (16 glands), the re-programmed device operated at 50-80 mmHg over selected time intervals of 5-20 minutes. The depth of necrosis was histologically determined after sacrificing the goats and excising the glands. RESULTS In the first series, glandular necrosis was noted to extend to a depth of 3.2-9.6 mm for the above heating cycles. Corresponding figures for the second series ranged from 4.7-8.6 mm for treatment times of one minute 'warm up' to 20 minutes of heating at 90 degrees C. The animals exhibited no systemic side effects post-treatment. CONCLUSION An experimental model describing a thermal technique causing necrosis of the goat mammary gland is described.
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Affiliation(s)
- R Alvarado
- Department of Surgery, Rush University Medical Center, Chicago, Illinois, USA
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Turner MA, Finch PJC, McKechanie AG, Kiernan MD, Hawksley OJ, Wadhwani S, McManus FB, Neal LA. Psychosis in the British Army: A 2-Year Follow-Up Study. Mil Med 2006; 171:1215-9. [PMID: 17256686 DOI: 10.7205/milmed.171.12.1215] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [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: 11/11/2022] Open
Abstract
BACKGROUND Recent research into mental illness in military populations has tended to focus on minor mental illness and the consequences of trauma. The literature contains very little on serious mental illness, including its occupational implications. AIMS To identify the incidence and factors associated with nonaffective psychosis in British Army personnel, to evaluate service quality in terms of duration of untreated psychosis, and to identify predictors of occupational outcome after 2 years, to inform future management of similar cases. METHODS A retrospective study of the case notes of all Army personnel admitted to the U.K. military psychiatric inpatient facility in Catterick Garrison with a nonaffective psychosis over a 4-year period between 1999 and 2002 was performed. RESULTS There were 48 cases of nonaffective psychosis and 14 cases of schizophrenia, corresponding to mean annual incidences of 0.11 cases per 1,000 and 0.03 cases per 1,000, respectively. The mean duration of untreated psychosis was 11 months, and 29 cases (60%) were diagnosed and treated in < 4 months. Officer status and longer duration of service predicted retention. Only eight patients (16.7%) were still in service at 2 years. CONCLUSIONS These findings indicate (1) there is a low incidence of nonaffective psychosis, (2) the military performs well in early detection and intervention in psychosis, and (3) a well-established military career and the premorbid psychological stability this implies predict a good occupational outcome.
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Affiliation(s)
- Mark A Turner
- University Hospital of North Tees, Hardwick, Stockton on Tees, TS19 8PE, England
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O'Leary R, Wadhwani S, Cole P. Management of postoperative nausea and vomiting. Assoc Med J 2006. [DOI: 10.1136/sbmj.060256] [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: 11/03/2022]
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Abstract
The posterior longitudinal ligament (PLL) is described as having deep and superficial layers, though recent studies have suggested that there may be three layers. Additional membranous structures have been reported, although there is no consensus as to their presence or morphology. The vertebral canal and dural sac were opened and the spinal nerve roots and spinal cord removed. The anterior dural ligaments were sectioned at their attachment to the PLL and the dura mater freed from the posterior surface of the vertebral bodies. The borders of the PLL were identified and the superficial and deep layers separated. The PLL is a wide band in the cervical region becoming more denticulate inferiorly, the widest parts being attached to the intervertebral discs (IVD) and adjacent vertebral body where the superficial and deep layers could not be separated. A continuous well developed peridural membrane attaching to the pedicles was present anterior to the deep PLL as well as a separate, thin, incomplete layer in 6 of 18 cadavers, covering the posterior surface of the superficial PLL.
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Abstract
STUDY DESIGN A dissection-based study of 18 embalmed cadavers (7 male, 11 female), mean age 84 (+/-8.4) years. OBJECTIVE To determine the morphology and morphometry of the anterior dural (Hofmann) ligaments. SUMMARY OF BACKGROUND DATA The attachment of the posterior longitudinal ligament to the dura mater is poorly understood. Anterior dural ligaments connect the anterior dura to the deep layer of the posterior longitudinal ligament, but appear to be limited to the lumbar region and have been observed to have a craniocaudal orientation. Their function is reported to help in supporting and protecting the dural sac and spinal cord. METHODS The spinal canal was opened exposing the dural sac, the spinal nerve roots incised, and spinal cord removed to mobilize the dural sac and gain access to Hofmann ligaments. The extent, orientation, length, and level of origin and insertion of the ligaments were documented. RESULTS The orientation of the ligaments changed from caudocranial (dura to posterior longitudinal ligament) at upper thoracic levels to transverse at the level of T8-T9 to craniocaudal at lower thoracic and lumbar levels, often with multiple ligaments being present at a single level. Ligament length varied from 0.5 to 28.8 mm and was positively correlated with vertebral level and negatively correlated with orientation. CONCLUSIONS Hofmann ligaments are present at most levels between C7 and L5; although most ligaments were limited to a single vertebral segment, some were observed to cross several segments.
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Affiliation(s)
- Sharan Wadhwani
- School of Biomedical Sciences, University of Leeds, Leeds, United Kingdom
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Adeboye KA, Emerton DG, Wadhwani S. The millennium celebrations, deliberate self harm. Our experience. Emerg Med J 2001; 18:76. [PMID: 11310475 PMCID: PMC1725519 DOI: 10.1136/emj.18.1.76-a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Jurgens S, Hennessy CH, Broadway P, Krishna M, Wadhwani S. Paediatric trauma in a district hospital: three cases of small bowel injury. Paediatr Anaesth 2000; 10:701-2. [PMID: 11119237 DOI: 10.1111/j.1460-9592.2000.ab01z.x] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- S Jurgens
- North Tees General Hospital, Stockton, UK
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Wadhwani S, Ratcliffe MB, Wallace AW, Salahieh A, Hong J, Sung S, Teerlink JR. A NEW RADIO-FREQUENCY HEATING DEVICE SHRINKS CHRONIC LEFT VENTRICULAR MYOCARDIAL INFARCT AREA. ASAIO J 1999. [DOI: 10.1097/00002480-199903000-00341] [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] Open
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Sivaram P, Wadhwani S, Klein MG, Sasaki A, Goldberg IJ. Biotinylation of lipoprotein lipase and hepatic triglyceride lipase: application in the assessment of cell binding sites. Anal Biochem 1993; 214:511-6. [PMID: 8109742 DOI: 10.1006/abio.1993.1531] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Lipoprotein lipase (LPL) and hepatic triglyceride lipase (HL) were biotinylated using N-hydroxysuccinamide ester of biotin (25-fold molar excess) which was incorporated into the lysine amino groups of the enzyme protein. By assessing enzyme activity and heparin-agarose affinity a biotinylation protocol which did not denature lipases was developed. Sodium dodecyl sulfate-polyacrylamide gel electrophoresis analysis showed that biotinylated LPL (bLPL) has the same mobility as that of unlabeled or iodinated LPL. Receptor binding activity of bLPL was studied in (i) cell binding experiments using cultured bovine aortic endothelial cells and (ii) ligand blotting experiments using endothelial cell plasma membranes. Endothelial cells in culture bound similar amounts of bLPL and 125I-LPL. We previously described a 116-kDa heparin-releasable LPL binding protein (hrp-116) on endothelial cells. Using biotinylated lipases in ligand blotting experiments we now demonstrate that both bLPL and biotinylated HL can bind to hrp-116. bLPL in addition also bound to low-density lipoprotein receptor related protein in ligand blotting. Thus, our protocol has produced biotinylated lipases which are both chemically and biologically active and can be used instead of iodinated lipases.
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Affiliation(s)
- P Sivaram
- Department of Medicine, Columbia University, New York, New York 10032
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