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Psaltikidis EM, Lima T, Fagnani R, Cardoso L, Bachur L, Höfling CC, Mendes E, Oliveira F, Resende M, Velasco N, Moretti M. Outbreak of Surgical Site Infections by Serratia marcescens Related to Degermation Brush. Int J Infect Dis 2022. [DOI: 10.1016/j.ijid.2021.12.264] [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: 11/24/2022] Open
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Heshmatzadeh Behzadi A, Velasco N, Prince M. Abstract No. 549 Trimetazidine in the prevention of contrast-induced nephropathy in patients with renal insufficiency undergoing coronary angiography: a systematic review and meta-analysis. J Vasc Interv Radiol 2021. [DOI: 10.1016/j.jvir.2021.03.359] [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: 10/21/2022] Open
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Pun K, Zhu CW, Kinsella MT, Sewell M, Grossman H, Neugroschl J, Li C, Ardolino A, Velasco N, Sano M. Mail and Telephone Outreach from Electronic Health Records for Research Participation on Cognitive Health and Aging. J Prev Alzheimers Dis 2021; 8:292-298. [PMID: 34101786 DOI: 10.14283/jpad.2021.18] [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] [Indexed: 11/11/2022]
Abstract
OBJECTIVES This report describes the efficacy and utility of recruiting older individuals by mail to participate in research on cognitive health and aging using Electronic Health Records (EHR). METHODS Individuals age 65 or older identified by EHR in the Mount Sinai Health System as likely to have Mild Cognitive Impairment (MCI) were sent a general recruitment letter (N=12,951). A comparison group of individuals with comparable age and matched for gender also received the letter (N=3,001). RESULTS Of the 15,952 individuals who received the mailing, 953 (6.0%) responded. 215 (1.3%) declined further contact. Overall rate of expression of interest was 4.6%. Of the 738 individuals who responded positively to further contact, 321 indicated preference for further contact by telephone. Follow-up of these individuals yielded 30 enrollments (0.2% of 15,952). No differences in response rate were noted between MCI and comparison groups, but the comparison group yielded higher enrollment. 6 individuals who were not the intended recipients of mailing but nevertheless contacted our study were also enrolled. CONCLUSIONS Mailings to individuals identified through a trusted source, such as a medical center from which they have received clinical care, may be a viable means of reaching individuals within this age group as this effort yielded a low rejection rate. However, EHR information did not enhance study enrollment. Implications for improving recruitment are discussed.
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Affiliation(s)
- K Pun
- Carolyn W. Zhu, PhD, Department of Geriatrics and Palliative Medicine, Icahn School of Medicine at Mount Sinai and JJP VA Medical Center, 130 West Kingsbridge Road, Bronx NY 10468, USA. , Telephone: 718-584-9000 ext. 6146, Fax: 718-741-4211
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Heshmatzadeh Behzadi A, Velasco N, Bakr M, Asif A, Prince M, Jain S, Zahid U. Abstract No. 488 Trimetazidine in the prevention of contrast-induced nephropathy in patients with renal insufficiency undergoing percutaneous coronary intervention: a systematic review and meta-analysis. J Vasc Interv Radiol 2020. [DOI: 10.1016/j.jvir.2019.12.549] [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: 10/25/2022] Open
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Cederholm T, Jensen G, Correia M, Gonzalez M, Fukushima R, Higashiguchi T, Baptista G, Barazzoni R, Blaauw R, Coats A, Crivelli A, Evans D, Gramlich L, Fuchs‐Tarlovsky V, Keller H, Llido L, Malone A, Mogensen K, Morley J, Muscaritoli M, Nyulasi I, Pirlich M, Pisprasert V, de van der Schueren M, Siltharm S, Singer P, Tappenden K, Velasco N, Waitzberg D, Yamwong P, Yu J, Van Gossum A, Compher C. GLIM criteria for the diagnosis of malnutrition - A consensus report from the global clinical nutrition community. J Cachexia Sarcopenia Muscle 2019; 10:207-217. [PMID: 30920778 PMCID: PMC6438340 DOI: 10.1002/jcsm.12383] [Citation(s) in RCA: 428] [Impact Index Per Article: 85.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
RATIONALE This initiative is focused on building a global consensus around core diagnostic criteria for malnutrition in adults in clinical settings. METHODS In January 2016, the Global Leadership Initiative on Malnutrition (GLIM) was convened by several of the major global clinical nutrition societies. GLIM appointed a core leadership committee and a supporting working group with representatives bringing additional global diversity and expertise. Empirical consensus was reached through a series of face-to-face meetings, telephone conferences, and e-mail communications. RESULTS A two-step approach for the malnutrition diagnosis was selected, i.e., first screening to identify "at risk" status by the use of any validated screening tool, and second, assessment for diagnosis and grading the severity of malnutrition. The malnutrition criteria for consideration were retrieved from existing approaches for screening and assessment. Potential criteria were subjected to a ballot among the GLIM core and supporting working group members. The top five ranked criteria included three phenotypic criteria (weight loss, low body mass index, and reduced muscle mass) and two etiologic criteria (reduced food intake or assimilation, and inflammation or disease burden). To diagnose malnutrition at least one phenotypic criterion and one etiologic criterion should be present. Phenotypic metrics for grading severity as Stage 1 (moderate) and Stage 2 (severe) malnutrition are proposed. It is recommended that the etiologic criteria be used to guide intervention and anticipated outcomes. The recommended approach supports classification of malnutrition into four etiology-related diagnosis categories. CONCLUSION A consensus scheme for diagnosing malnutrition in adults in clinical settings on a global scale is proposed. Next steps are to secure further collaboration and endorsements from leading nutrition professional societies, to identify overlaps with syndromes like cachexia and sarcopenia, and to promote dissemination, validation studies, and feedback. The diagnostic construct should be re-considered every 3-5 years.
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Affiliation(s)
- T. Cederholm
- Department of Public Health and Caring Sciences, Clinical Nutrition and MetabolismUppsala UniversityUppsalaSweden
- Theme AgingKarolinska University HospitalStockholmSweden
| | - G.L. Jensen
- Dean's Office and Department of Medicine, Larner College of MedicineUniversity of VermontBurlingtonVTUSA
| | - M.I.T.D. Correia
- Department of SurgeryUniversidade Federal de Minas GeraisBelo HorizanteBrazil
| | - M.C. Gonzalez
- Post‐graduate Program in Health and BehaviorCatholic University of PelotasRSBrazil
| | - R. Fukushima
- Department of Medicine, Department of SurgeryTokyo University School of MedicineTokyoJapan
| | - T. Higashiguchi
- Department of Surgery and Palliative MedicineFujita Health University School of MedicineDengakugakubo, KutsukakeToyoake‐CityAichiJapan
| | - G. Baptista
- Medicine Faculty Central University of VenezuelaUniversitary Hospital of Caracas, Chief Nutritional Support Unit Hospital Universitary/Academic of Caracas, University Central of VenezuelaVenezuela
| | - R. Barazzoni
- Department of Medical, Technological and Translational SciencesUniversity of Trieste, Ospedale di CattinaraTriesteItaly
| | - R. Blaauw
- Division of Human Nutrition, Faculty of Medicine and Health SciencesStellenbosch UniversityCape TownSouth Africa
| | - A.J.S. Coats
- Monash UniversityAustralia
- University of WarwickWarwickUK
| | - A.N. Crivelli
- Unit of Nutrition Support and Malabsorptive DiseasesHospital HIGA San MartínBuenos AiresArgentina
| | - D.C. Evans
- Department of SurgeryThe Ohio State UniversityColumbusOHUSA
| | | | - V. Fuchs‐Tarlovsky
- Clinical Nutrition DepartmentHospital General de MéxicoMexico CityMexico
| | - H. Keller
- Schlegel‐UW Research Institute for Aging and Department of KinesiologyUniversity of WaterlooOntarioCanada
| | - L. Llido
- Clinical Nutrition ServiceSt. Luke's Medical Center‐Quezon CityMetro‐Manila, Quezon CityPhilippines
| | - A. Malone
- The American Society for Parenteral and Enteral NutritionSilver SpringMDUSA
- Mt. Carmel West HospitalColumbusOHUSA
| | - K.M. Mogensen
- Department of NutritionBrigham and Women's HospitalBostonMAUSA
| | - J.E. Morley
- Division of GeriatricsSaint Louis University HospitalSt. LouisMOUSA
| | - M. Muscaritoli
- Department of Clinical MedicineSapienza University of RomeItaly
| | - I. Nyulasi
- Department of Nutrition, Alfred Health and Professor of Dietetic Practice, Department of Rehabilitation, Nutrition and Sport, Latrobe University; Department of Medicine, Central Clinical SchoolMonash UniversityAustralia
| | - M. Pirlich
- Imperial Oak Outpatient Clinic, Endocrinology, Gastroenterology and Clinical NutritionBerlinGermany
| | - V. Pisprasert
- Department of MedicineKhon Kaen University College of MedicineKhon KaenThailand
| | - M.A.E. de van der Schueren
- Department of Nutrition and DieteticsAmsterdam UMC, Vrije Universiteit AmsterdamAmsterdamthe Netherlands
- Faculty of Health and Social Studies, Department of Nutrition and DieteticsHAN University of Applied SciencesNijmegenthe Netherlands
| | - S. Siltharm
- Ministry of Science and TechnologyBangkokThailand
| | - P. Singer
- Department of General Intensive CareRabin Medical CenterPetah TikvaIsrael
- Sackler School of MedicineTel Aviv UniversityIsrael
| | - K. Tappenden
- Department of Kinesiology and NutritionUniversity of Illinois‐ChicagoChicagoILUSA
| | - N. Velasco
- Department of Nutrition, Diabetes and Metabolismo, School of MedicinePontificia Universidad Catolica de ChileChile
| | - D. Waitzberg
- Department of Gastroenterology, School of MedicineUniversity of São PauloSão PauloBrazil
| | - P. Yamwong
- Department of MedicineSiriaj HospitalBangkokThailand
| | - J. Yu
- GI Surgery and Nutrition Metabolic Division, Department of General SurgeryPeking Union Medical College HospitalBeijingChina
| | - A. Van Gossum
- Department of Gastroenterology, Clinic of Intestinal Diseases and Nutritional SupportHopital Erasme, Free University of BrusselsBrusselsBelgium
| | - C. Compher
- Biobehavioral Health Sciences Department and Nutrition ProgramsUniversity of Pennsylvania School of NursingPhiladelphiaPAUSA
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Velasco N, Prasad S, Hendricken M, Shellito N. DOES SELF-RATED HEALTH AFFECT SUBJECTIVE AGE OVER TIME? Innov Aging 2018. [DOI: 10.1093/geroni/igy031.3449] [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: 11/13/2022] Open
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Cederholm T, Jensen GL, Correia MITD, Gonzalez MC, Fukushima R, Higashiguchi T, Baptista G, Barazzoni R, Blaauw R, Coats A, Crivelli A, Evans DC, Gramlich L, Fuchs-Tarlovsky V, Keller H, Llido L, Malone A, Mogensen KM, Morley JE, Muscaritoli M, Nyulasi I, Pirlich M, Pisprasert V, de van der Schueren MAE, Siltharm S, Singer P, Tappenden K, Velasco N, Waitzberg D, Yamwong P, Yu J, Van Gossum A, Compher C, Cederholm T, Van Gossum A, Correia MIT, Gonzalez MC, Fukushima R, Higashiguchi T, Baptista G, Barazzoni R, Blaauw R, Coats A, Crivelli A, Evans D, Gramlich L, Fuchs V, Keller H, Llido L, Malone A, Mogensen K, Morley J, Muscaritoli M, Nyulasi I, Pirlich M, Pisprasert V, de van der Schueren M, Siltharm S, Singer P, Tappenden K, Velasco N, Waitzberg D, Yamwong P, Yu J. GLIM criteria for the diagnosis of malnutrition - A consensus report from the global clinical nutrition community. Clin Nutr 2018; 38:1-9. [PMID: 30181091 DOI: 10.1016/j.clnu.2018.08.002] [Citation(s) in RCA: 1191] [Impact Index Per Article: 198.5] [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: 07/31/2018] [Accepted: 08/02/2018] [Indexed: 12/12/2022]
Abstract
RATIONALE This initiative is focused on building a global consensus around core diagnostic criteria for malnutrition in adults in clinical settings. METHODS In January 2016, the Global Leadership Initiative on Malnutrition (GLIM) was convened by several of the major global clinical nutrition societies. GLIM appointed a core leadership committee and a supporting working group with representatives bringing additional global diversity and expertise. Empirical consensus was reached through a series of face-to-face meetings, telephone conferences, and e-mail communications. RESULTS A two-step approach for the malnutrition diagnosis was selected, i.e., first screening to identify "at risk" status by the use of any validated screening tool, and second, assessment for diagnosis and grading the severity of malnutrition. The malnutrition criteria for consideration were retrieved from existing approaches for screening and assessment. Potential criteria were subjected to a ballot among the GLIM core and supporting working group members. The top five ranked criteria included three phenotypic criteria (non-volitional weight loss, low body mass index, and reduced muscle mass) and two etiologic criteria (reduced food intake or assimilation, and inflammation or disease burden). To diagnose malnutrition at least one phenotypic criterion and one etiologic criterion should be present. Phenotypic metrics for grading severity as Stage 1 (moderate) and Stage 2 (severe) malnutrition are proposed. It is recommended that the etiologic criteria be used to guide intervention and anticipated outcomes. The recommended approach supports classification of malnutrition into four etiology-related diagnosis categories. CONCLUSION A consensus scheme for diagnosing malnutrition in adults in clinical settings on a global scale is proposed. Next steps are to secure further collaboration and endorsements from leading nutrition professional societies, to identify overlaps with syndromes like cachexia and sarcopenia, and to promote dissemination, validation studies, and feedback. The diagnostic construct should be re-considered every 3-5 years.
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Affiliation(s)
- T Cederholm
- Department of Public Health and Caring Sciences, Clinical Nutrition and Metabolism, Uppsala University, Uppsala, Sweden; Theme Aging, Karolinska University Hospital, Stockholm, Sweden.
| | - G L Jensen
- Dean's Office and Department of Medicine, Larner College of Medicine, University of Vermont, Burlington, VT, USA
| | - M I T D Correia
- Department of Surgery, Universidade Federal de Minas Gerais, Belo Horizante, Brazil
| | - M C Gonzalez
- Post-graduate Program in Health and Behavior, Catholic University of Pelotas, RS, Brazil
| | - R Fukushima
- Department of Medicine, Department of Surgery, Tokyo University School of Medicine, Tokyo, Japan
| | - T Higashiguchi
- Department of Surgery and Palliative Medicine, Fujita Health University School of Medicine, Dengakugakubo, Kutsukake, Toyoake-City, Aichi, Japan
| | - G Baptista
- Medicine Faculty Central University of Venezuela, Universitary Hospital of Caracas, Chief Nutritional Support Unit Hospital Universitary/Academic of Caracas, University Central of Venezuela, Venezuela
| | - R Barazzoni
- Department of Medical, Technological and Translational Sciences, University of Trieste, Ospedale di Cattinara, Trieste, Italy
| | - R Blaauw
- Division of Human Nutrition, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa
| | - A Coats
- Monash University, Australia; University of Warwick, Warwick, UK
| | - A Crivelli
- Hospital HIGA San Martín, Unit of Nutrition Support and Malabsorptive Diseases, Buenos Aires, Argentina
| | - D C Evans
- Department of Surgery, The Ohio State University, Columbus, OH, USA
| | - L Gramlich
- University of Alberta, Edmonton, Alberta, Canada
| | - V Fuchs-Tarlovsky
- Clinical Nutrition Department, Hospital General de México, Mexico City, Mexico
| | - H Keller
- Schlegel-UW Research Institute for Aging and Department of Kinesiology, University of Waterloo, Ontario, Canada
| | - L Llido
- Clinical Nutrition Service, St. Luke's Medical Center-Quezon City, Metro-Manila, Quezon City, Philippines
| | - A Malone
- The American Society for Parenteral and Enteral Nutrition, Silver Spring, MD, USA; Mt. Carmel West Hospital, Columbus, OH, USA
| | - K M Mogensen
- Department of Nutrition, Brigham and Women's Hospital, Boston, MA, USA
| | - J E Morley
- Division of Geriatrics, Saint Louis University Hospital, St. Louis, MO, USA
| | - M Muscaritoli
- Department of Clinical Medicine, Sapienza University of Rome, Italy
| | - I Nyulasi
- Department of Nutrition, Alfred Health and Professor of Dietetic Practice, Department of Rehabilitation, Nutrition and Sport, Latrobe University; Department of Medicine, Central Clinical School, Monash University, Australia
| | - M Pirlich
- Imperial Oak Outpatient Clinic, Endocrinology, Gastroenterology and Clinical Nutrition, Berlin, Germany
| | - V Pisprasert
- Department of Medicine, Khon Kaen University College of Medicine, Khon Kaen, Thailand
| | - M A E de van der Schueren
- Amsterdam UMC, Vrije Universiteit Amsterdam, Department of Nutrition and Dietetics, Amsterdam, the Netherlands; HAN University of Applied Sciences, Faculty of Health and Social Studies, Department of Nutrition and Dietetics, Nijmegen, the Netherlands
| | - S Siltharm
- Ministry of Science and Technology, Bangkok, Thailand
| | - P Singer
- Department of General Intensive Care, Rabin Medical Center, Petah Tikva, Israel; Sackler School of Medicine, Tel Aviv University, Israel
| | - K Tappenden
- Department of Kinesiology and Nutrition, University of Illinois-Chicago, Chicago, IL, USA
| | - N Velasco
- Department of Nutrition, Diabetes and Metabolismo, School of Medicine, Pontificia Universidad Catolica de Chile, Chile
| | - D Waitzberg
- Department of Gastroenterology, School of Medicine, University of São Paulo, São Paulo, Brazil
| | - P Yamwong
- Department of Medicine, Siriaj Hospital, Bangkok, Thailand
| | - J Yu
- GI Surgery and Nutrition Metabolic Division, Department of General Surgery, Peking Union Medical College Hospital, Beijing, China
| | - A Van Gossum
- Department of Gastroenterology, Clinic of Intestinal Diseases and Nutritional Support, Hopital Erasme, Free University of Brussels, Brussels, Belgium
| | - C Compher
- Biobehavioral Health Sciences Department and Nutrition Programs, University of Pennsylvania School of Nursing, Philadelphia, PA, USA
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Velasco N, Mutchler J. FACTORS SHAPING GRANDPARENTS RESPONSIBILITY FOR GRANDCHILDREN IN THREE-GENERATION HOUSEHOLDS. Innov Aging 2017. [DOI: 10.1093/geroni/igx004.1511] [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: 11/14/2022] Open
Affiliation(s)
- N. Velasco
- Gerontology, University of Massachusetts Boston, Boston, Massachusetts
| | - J.E. Mutchler
- Gerontology, University of Massachusetts Boston, Boston, Massachusetts
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Chamarthy M, Latzman J, Cynamon J, Hughes T, Velasco N, Golowa Y. Balloon-occluded retrograde transvenous obliteration of gastric varices. J Vasc Interv Radiol 2014. [DOI: 10.1016/j.jvir.2013.12.483] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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Wabel P, Moissl U, Chamney P, Jirka T, Machek P, Ponce P, Taborsky P, Tetta C, Velasco N, Vlasak J, Zaluska W, Wizemann V. Towards improved cardiovascular management: the necessity of combining blood pressure and fluid overload. Nephrol Dial Transplant 2008; 23:2965-71. [DOI: 10.1093/ndt/gfn228] [Citation(s) in RCA: 211] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
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Doulton TWR, Tucker B, Reardon J, Velasco N. Antineutrophil cytoplasmic antibody-associated necrotizing crescentic glomerulonephritis in a patient receiving treatment with etanercept for severe rheumatoid arthritis. Clin Nephrol 2004; 62:234-8. [PMID: 15481857 DOI: 10.5414/cnp62234] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.0] [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: 11/18/2022] Open
Abstract
Etanercept is a tumor necrosis factor inhibitor used in the treatment of rheumatoid arthritis and, increasingly, in a range of other diseases. We report a case of necrotizing crescentic glomerulonephritis, associated with a positive antineutrophil cytoplasmic antibody, causing acute renal failure in a woman receiving treatment with etanercept for severe rheumatoid arthritis. Our patient was treated with steroids and cyclophosphamide following withdrawal of etanercept, with a good clinical response. Although reports of vasculitis in patients receiving treatment with etanercept are rare, this drug has been shown to up-regulate some aspects of immune function, and the possibility that this agent may precipitate or exacerbate vasculitis in some individuals has to be considered.
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Affiliation(s)
- T W R Doulton
- Department of Nephrology, Mayday University Hospital, Croydon, Surrey, UK.
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Wong G, Jayawardene SA, Velasco N. A benign outcome of nephritis despite C-ANCA/PR3 positivity. Clin Nephrol 2002; 58:166-7. [PMID: 12227691 DOI: 10.5414/cnp58166] [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: 11/18/2022] Open
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Velasco N, Hernandez G, Wainstein C, Castillo L, Maiz A, Lopez F, Guzman S, Bugedo G, Acosta AM, Bruhn A. Influence of polymeric enteral nutrition supplemented with different doses of glutamine on gut permeability in critically ill patients. Nutrition 2001; 17:907-11. [PMID: 11744338 DOI: 10.1016/s0899-9007(01)00613-x] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [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: 11/18/2022]
Abstract
OBJECTIVES To evaluate the effect of glutamine-supplemented polymeric enteral formulas on the recovery of gut-permeability abnormalities in critically ill patients. METHODS Twenty-three patients were randomized to receive a conventional casein-based enteral formula (ADN), ADN plus glutamine in a dose of 0.15 g x kg(-1) x d(-1) or ADN plus 0.30 g x kg(-1) x d(-1) of glutamine for 8 d. The lactulose mannitol permeability test (L/M) was performed at baseline and at the end of the study. Nineteen healthy volunteers served as controls for the L/M test. RESULTS An increase in permeability compared with control subjects was observed in patients at baseline (mean +/- standard error of the mean; L/M ratio: 0.11 +/- 0.03 and 0.025 +/- 0.004, respectively; P < 0.02). The L/M ratio improved after the period of enteral nutrition as a whole (initial L/M: 0.11 +/- 0.03, final L/M: 0.061 +/- 0.01; P < 0.03), but no difference was found between groups. CONCLUSIONS Even though polymeric enteral nutrition was associated with a significant improvement in the L/M ratio, glutamine supplementation did not show a specific influence in improving recovery of gut permeability in critically ill patients.
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Affiliation(s)
- N Velasco
- Hospital Clínico, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
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Huidobro A, Velasco N, Rojas T. [Prevalence of calorie protein malnutrition among patients in chronic hemodialysis]. Rev Med Chil 2001; 129:495-502. [PMID: 11464530] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/20/2023]
Abstract
BACKGROUND Malnutrition has been strongly associated with morbidity and mortality in hemodialysis patients. In the other hand, dialysis allows a nutritional improvement in patients with more than 12 months in dialysis. AIM To study the prevalence of malnutrition among patients in hemodialysis. PATIENTS AND METHODS We measured clinical, anthropometric and biochemical parameters of nutritional status in chronic hemodialysed patients. Results were related to individual time in dialysis. Patients with more and less than 12 months in dialysis were compared. RESULTS Twenty nine patients (18 male) aged 14 to 65 years old, were studied. Mean caloric intake was 23.8 Cal/Kg and protein intake was 0.7 g/Kg. Mean body mass index was 21.7 +/- 3.7 kg/m2 Thirty eight percent of patients had a body mass index of less than 20 kg/m2. Mean serum albumin was 4.1 +/- 0.7 g/L; mean prealbumin was 33.5 +/- 7.9 mg% and creatinine was 9.6 +/- 2.8 mg%. Serum cholesterol was 182 mg% and triacylglycerol 129 mg%. PCR was 42.2 +/- 18.8 and Kt/V was 1.45 +/- 0.3. We did not find a correlation between nutritional markers and time in dialysis or a difference in nutritional parameters between patients with less or more than 12 months in dialysis. CONCLUSIONS These patients in chronic dialysis have a high prevalence of caloric malnutrition, which may be due to a poor caloric intake. Protein malnutrition parameters were normal in most patients. The absence of abnormal lipid levels, common in chronic renal failure, is noticeable.
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Affiliation(s)
- A Huidobro
- MRC International Nutrition Group, Department of Epidemiology & Public Health, London School of Hygiene and Tropical Medicine 49-51 Bedford Square, London WC1B 3DP.
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Soper CP, Sampson SA, Velasco N. Renal thrombotic microangiopathy, campylobacter gastroenteritis and anti-cardiolipin antibody. Nephrol Dial Transplant 2000; 15:1261-2. [PMID: 10910463 DOI: 10.1093/ndt/15.8.1261-a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Bastías G, Villarroel L, Zuñiga D, Marshall G, Velasco N, Mena B. [Academic performance of medical students: a predictable result?]. Rev Med Chil 2000; 128:671-8. [PMID: 11016068] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
Abstract
BACKGROUND Traditionally, medical schools demand their students a high dedication in time, responsibility and integrity. AIM To assess the predictive capacity of several specific variables, on the academic performance of medical students. MATERIAL AND METHODS All students who entered during 1984-1995 period were studied. The academic performance was assessed using two indices: an overall evaluation of successfulness as determined by the approval rate in different courses and grade-point average obtained during the first three years at the Medical School. The variables used to predict academic performance were year of enrollment, high school grades, university admission test scores, biomedical and demographic characteristics. All these were measured at the time when the student was enrolled. RESULTS Eight hundred and eight students were studied at the end of the third year. The most important predictive variables selected for both performance indices were: high school grades, admission biology test scores, place were high school studies were done, and previous university studies. In addition verbal and mathematics admission academic performance tests scores were selected for grade-point average index. Although, the overall admission score and high school academic performance were significantly associated with the two outcomes, they were not selected in the final models. CONCLUSIONS The best predictors of an optimal academic performance in these medical students were high school grades, admission biology test scores, residing in Metropolitan Santiago and previous university studies.
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Affiliation(s)
- G Bastías
- Oficina de Educación Médica, Pontificia Universidad Católica de Chile.
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Hernandez G, Velasco N, Wainstein C, Castillo L, Bugedo G, Maiz A, Lopez F, Guzman S, Vargas C. Gut mucosal atrophy after a short enteral fasting period in critically ill patients. J Crit Care 1999; 14:73-7. [PMID: 10382787 DOI: 10.1016/s0883-9441(99)90017-5] [Citation(s) in RCA: 108] [Impact Index Per Article: 4.3] [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: 01/09/2023]
Abstract
PURPOSE The purpose of this study was to evaluate the presence of gut mucosal atrophy and changes in mucosal permeability in critically ill patients after a short fasting period. MATERIALS AND METHODS Fifteen critically ill patients underwent a period of enteral fasting of at least 4 days (mean 7.8 days). We took the following measurements the day before initiating enteral nutrition: indirect calorimetry, serum albumin, prealbumin, and lymphocyte count. We also performed a duodenal endoscopic biopsy with histopathological and mucosal morphometric analysis including villus height and crypt depth. The lactulose-mannitol test was performed to assess gut permeability. A total of 28 healthy volunteers served as controls for duodenal biopsy or lactulose-mannitol test. Clinical data, such as length of fasting, severity score, and previous parenteral nutritional support, were recorded. RESULTS We found gut mucosal atrophy, expressed as a decrease in villus height and crypt depth, in patients compared with controls. The patients also exhibited an abnormal lactulose-mannitol test. Morphometric changes did not correlate with permeability. Further, we found no correlation between the results of the lactulose-mannitol test and of mucosal morphometry with clinical data. CONCLUSIONS We found that a short period of enteral fasting was associated with significant duodenal mucosal atrophy and abnormal gut permeability in critically ill patients.
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Affiliation(s)
- G Hernandez
- Hospital Clinico, Facultad de Medicina, Pontificia Universidad Catolica de Chile, Santiago
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Castillo L, Velasco N, Wainstein C, Bugedo G, Hernández G, Klaassen J, Errandonea M, Méndez J, Acosta AM. [Transcranial cytokine gradient and intestinal permeability in acute severe brain injury]. Rev Med Chil 1999; 127:639-46. [PMID: 10513071] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/14/2023]
Abstract
BACKGROUND Acute brain injury is associated with a bimodal hypermetabolic state probably caused by cytokine secretion and high hormone and catecholamine concentrations. In a first stage, the brain would produce these substances and afterwards, another production source, most probably the splanchnic territory, would perpetuate the hypermetabolic state. AIM To investigate the cytokine production source and to assess intestinal permeability in acute brain injury in the absence of cerebral ischemia and systemic oxygen deficit. PATIENTS AND METHODS Arterial systemic and cerebral venous bulbar interleukin 1 beta and interleukin 6 levels were measured during the first seven days of evolution in 15 patients with acute brain injury. Serum lactate, the oxygen/lactate ratio, gastric intramucosal pH and intestinal permeability using the lactulose/mannitol test were also assessed in the same period. RESULTS High arterial and venous interleukin 1 beta and interleukin 6 levels were detected. A positive gradient for interleukin 6 levels was detected throughout the study period with normal intramucosal pH, lactate and oxygen/lactate ratio. There was also an early impairment of intestinal permeability in these patients. CONCLUSIONS High arterial and venous cytokine concentrations were detected in patients with acute brain injury. The positive gradient for interleukin 6 suggests a brain origin for this cytokine. Intestinal permeability is also altered in these patients.
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Affiliation(s)
- L Castillo
- Departamento de Anestesiología, Facultad de Medicina y Hospital Clínico de la Universidad Católica, Santiago de Chile.
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Ortín M, Olalla J, Marco F, Velasco N. Low-dose vitamin K1 versus short-term with holding of acenocoumarol in the treatment of excessive anticoagulation episodes induced by acenocoumarol. A retrospective comparative study. Haemostasis 1998; 28:57-61. [PMID: 10087429 DOI: 10.1159/000022413] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
BACKGROUND No consensus exists about the management of iatrogenically induced excessive hypocoagulability episodes. OBJECTIVE To compare the two most common therapeutic approaches in such situations (discontinuation of the oral anticoagulant vs. low-dose subcutaneous vitamin K1) when acenocoumarol is the normally used anticoagulant. PATIENTS AND METHODS The study was retrospective and comparative. Patients received antithrombotic therapy using acenocoumarol. Anticoagulant plasmatic activity was assessed through the international normalized ratio (INR) recorded from December 1994 to December 1997 at two medical centers. RESULTS INR is brought faster to a safe range in patients treated with low-dose vitamin K1 (p = 0.01). Their long-term behavior is also more stable and predictable and no resistance to the oral anticoagulant was found. CONCLUSION Low-dose vitamin K1 is a safer therapeutic option compared to simply withholding the oral anticoagulant. Its best scheme of administration, however, has yet to be defined.
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Affiliation(s)
- M Ortín
- Department of Hematology, Hospital Sierrallana, Torrelavega, Cantabria, Spain
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22
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Velasco N. [Social participation and health promotion in Cotacachi: an experience in progress]. Correo Poblac Salud 1997; 5:37-40. [PMID: 12178224] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/26/2023]
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23
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Olmos P, Camilla L, Mellado P, Moya P, Arriagada P, Jiménez M, Maiz A, Arteaga A, Velasco N, Acosta AM, Escalona M, Borcoski M. [Diabetic neuropathy: thermal sensation and metabolic control in non-insulin-dependent diabetics]. Rev Med Chil 1997; 125:1319-27. [PMID: 9609053] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
BACKGROUND The early detection of peripheral neuropathy in diabetics is important since it is the main risk factor for lower limb trophic lesions in diabetics. AIM To assess the relationship between feet thermal sensation threshold and metabolic control in ambulatory non-insulin-dependent diabetics. PATIENTS AND METHODS A random sample of 34 non-insulin-dependent diabetics followed for more than five years in a special clinic, out of 368 patients, was selected. Warmth sensation thresholds were measured in the dorsum of both feet using a MSTP-III thermostimulator. The average value of all glycosylated hemoglobins obtained during the 9.7 +/- 5.3 years of follow up for each patient was calculated. A multiple stepwise regression analysis was performed between thermal sensation as the dependent variable and glycosylated hemoglobin, fasting blood glucose, age and diabetes duration. RESULTS The regression model disclosed glycosylated hemoglobin as the only independent predictor of warmth sensation threshold (partial r = 0.385; p = 0.043). Fifteen diabetic patients with good metabolic control, defined as those with a mean glycosylated hemoglobin of less than 9.5%, had a warmth sensation threshold of 35.6 +/- 3.7 degrees C, whereas 19 diabetics with a had control (glycosylated hemoglobin > or = 9.5%) had a threshold of 39 +/- 3.8 degrees C (p = 0.017). CONCLUSIONS In this group of diabetics, there is a relationship between the severity of distal polyneuropathy and the metabolic control, assessed with glycosylated hemoglobin levels.
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Affiliation(s)
- P Olmos
- Departamento de Nutrición, Diabetes y Metabolismo, Facultad de Medicina, P Universidad Católica de Chile, Santiago, Chile
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24
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Buitron M, Velasco N. [Participative health diagnosis in Cotacachi]. Correo Poblac Salud 1997; 5:20-3. [PMID: 12178230] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/26/2023]
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25
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Rosso P, Velasco N, Moreno R. [Undergraduate curriculum reform at the Pontifical Catholic University Medical School: aims, methodology and advance status]. Rev Med Chil 1997; 125:796-807. [PMID: 9567383] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The Medical School of the Pontifical Catholic University is devoted to a reform process aiming to adequate undergraduate training to scientific, technological, cultural and social changes in medical practice in Chile and to incorporate novel teaching methodology. One of the main modifications is the change of the resulting professional from "a general physician capable of resolving most medical problems of rural or urban populations" to "a physician with a solid general training but qualified for a subsequent specialization". This requires curricular flexibility to obtain different professional profiles. Other important changes are a reduction in curricular contents and their vertical and horizontal integration, modernization of teaching methodologies with the incorporation of computing techniques and problem oriented teaching and the incorporation of new subjects such as molecular biology, clinical genetics, health economics. To achieve these objectives, a semi-flexible curriculum was devised, the curricular mesh has been modified extensively, an outpatient and a nine months elective internship were added. Most modifications have been implemented, remaining changes in 4th and 5th years. These changes required a reorganisation of academic structure, the use of new selection, training and perfecting criteria for teachers, better salaries for outstanding professors and improvement of teaching infrastructure. This reform must be seen as a medium term integral change in the context of an integral academic development plan.
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Velasco N. [Present and future of Chilean medical schools]. Rev Med Chil 1997; 125:18-23. [PMID: 9515272] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- N Velasco
- Pontificia Universidad Católica de Chile
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Velasco N, Farrington K, Greenwood R, Rahman AF. Atypical presentation of systematic nocardiosis and successful treatment with meropenem. Nephrol Dial Transplant 1996; 11:709-10. [PMID: 8731182 DOI: 10.1093/oxfordjournals.ndt.a027368] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Affiliation(s)
- N Velasco
- Renal Unit, Leister Hospital, Stevenage, Hertfordshire, UK
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Maiz A, Kehr J, Grekin C, Reyes E, Charlín V, Fernández P, Manrique M, Velasco N. [Anorexigenic drugs in the treatment of obesity]. Rev Med Chil 1995; 123:637-40. [PMID: 8525212] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Obesity is highly prevalent and has several adverse effects on health. Its treatment is thus warranted and must aim to modify dietary and physical activity habits. The opinion of this association is that anorexigenic drugs with cathecolaminergic action (diethylpropion, phentermine, mazindol and phenylpropanolamine) or serotoninergic action (fenfluoramine and fluoxetine) may be used in moderate or severe obesity (BMI > 30 kg/m2) after a complete clinical assessment and in the context of an integral medical treatment. This association recommends a close surveillance of the use of these drugs, specially when formulated as non-proprietary prescriptions.
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Affiliation(s)
- A Maiz
- Asociación Chilena de Nutrición Clínica, Santiago de Chile
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29
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Velasco N, Papapietro K, Rapaport J, Klaassen J, Guzmán S, Maiz A, Acosta AM, Escalona M, Campano M, Valenzuela A. [Variability of measured energy expenditure in patients with acute pancreatitis: is it possible to obtain a reliable pathology factor for these cases?]. Rev Med Chil 1994; 122:48-52. [PMID: 8066343] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Energy expenditure was measured in 55 patients with acute pancreatitis, during variable periods ranging from 1 to 5 weeks and it was compared with estimated energy expenditure according to Harris Benedict equations. Patients with severe pancreatitis had similar measured and measured/estimated energy expenditure rations, compared to those with mild pancreatitis (1678 +/- 349.6 kcal/day and 1.1 +/- 0.19 vs 1632 +/- 383 kcal/day and 1.06 +/- 0.19). There was a high dispersion of measured/estimated rations (0.67 - 1.7) that precluded the calculation of a reliable energy expenditure correction factor for this disease. It is concluded that energy expenditure must be measured and not estimated, when planning an adequate nutritional support in patients with acute pancreatitis.
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Affiliation(s)
- N Velasco
- Facultad de Medicina, P Universidad Católica de Chile
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Maiz A, Arteaga A, Klaassen J, Velasco N, Borkosky M, Jiménez M, Acosta AM. [Non-insulin-dependent diabetics with secondary failure: insulin therapy at bedtime combined with glibenclamide]. Rev Med Chil 1993; 121:1135-41. [PMID: 8191117] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Secondary failure and the requirement is common in patients with non-insulin dependent diabetes mellitus. The combination of sulfonylureas with NPH insulin at bedtime has been proposed to avoid high doses of insulin. We treated 18 patients (2 men, age range 47-76 yr) non respondent to diet and glibenclamide, combining NPH insulin in an average dose of 0.3 +/- 0.03 U/kg BW at bedtime for 6 months. Fasting serum glucose improved from 256 +/- 11 to 132 +/- 6 mg/dl and HbA1C from 13.6 +/- 0.4 to 9.9 +/- 0.2%. Four patients achieved a good control (defined as a HbA1C < 9), 9 a fair control (HbA1C 9.1-10) and 5 persisted with a bad control (HbA1C > 10). Well controlled patients were younger, had a shorter duration of diabetes and had a non significantly higher body mass index. Fasting serum insulin and C peptide levels achieved after glucagon injection were not predictors of the metabolic response to combined therapy. Tolerance to treatment was good, without changes in blood pressure or serum lipids and with a low incidence of hypoglycemia. There was a mean increase of 3.6 kg in body weight. After 6 months of therapy, maximum achieved C peptide values after glucagon increased from 3.3 +/- 0.3 to 4.5 +/- 0.4 ng/ml. It is concluded that combined glibenclamide and NPH insulin at bedtime is useful to treat secondary failure in non-insulin dependent diabetic patients, but their response in variable and non dependent on their beta insular secretion.
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Affiliation(s)
- A Maiz
- Departamento de Endocrinologia, Metabolismo y Nutrición, Facultad de Medicina, P Universidad Católica de Chile. Santiago de Chile
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Arteaga A, Villanueva CL, Skorin C, Guasch V, Solís de Ovando F, Velasco N, Acosta AM, Leighton F. [Dyslipidemic patients with coronary cardiopathy. Effect of different doses of OMEGA-3 fatty acids on serum lipids and lipoproteins]. Rev Med Chil 1993; 121:618-25. [PMID: 8278696] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Twenty one male patients aged 35 to 70 years, with coronary artery disease and dislipidemia refractory to dietary treatment, were assigned to three parallel groups of 7 individuals each that received a supplemental dose of 2, 4 and 6 g/day of omega-3 fatty acids during 60 days. After a 30 days wash-out period and 60 of supplementation, subjects were weighed, a dietary survey was performed, serum levels of total cholesterol and triglycerides, the lipid content of serum lipoproteins and the content of EPA+DHA in plasma phospholipids were measured. A dose dependent increase in EPA+DHA content of phospholipids and no changes in weight or nutrient intake were observed during the supplementation period. With the 6 g dose, a significant reduction in total cholesterol, with a reduction in VLDL and increase in LDL cholesterol and a decline in VLDL triglycerides was observed. With the 4 g dose a reduction in total cholesterol at the expense of VLDL and HDL cholesterol and a reduction in VLDL triglycerides but no changes in total triglycerides was observed. No changes in serum lipids were observed with 2 g dose. In patients with type IIA hyperlipidemia, a significant positive correlation was observed between DHA+EPA content of plasma phospholipids and LDL cholesterol, this correlation was not observed in patients with IIB or IV phenotypes. It is concluded that omega-3 fatty acids are ineffective as the only treatment for dislipidemias refractory to diet.
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Affiliation(s)
- A Arteaga
- Depto de Endocrinología, Metabolismo y Nutrición, Facultad de Medicina, Universidad Católica de Chile, Santiago de Chile
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32
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Velasco N, Long CL. [Estimation of energy expenditure in clinical practice: applicability to individual multiple injury cases]. Rev Med Chil 1992; 120:1347-50. [PMID: 1343373] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
In 37 multiple trauma patients the estimated and measured energy expenditures were compared. Predicted energy expenditure overestimated it in 89% of patients. The correction factor for the different pathologies was the principal source of error, since the measured/predicted basal energy expenditure ratio was 1.19 +/- 0.17. This ratio had a wide range of values (0.84-1.61) which renders the prediction of individual energy expenditure highly unreliable. Since the overestimation of energy requirements in the critically ill patients may convey important complications, the direct measurement of such requirements is recommended.
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Affiliation(s)
- N Velasco
- Universidad Católica de Chile, Facultad de Medicina
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33
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Mohamed AS, Velasco N. Ethics, commerce, and kidneys. West J Med 1991. [DOI: 10.1136/bmj.303.6806.856-c] [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: 11/04/2022]
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Velasco N, Long CL, Nelson KM, Blakemore WS. Whole-body protein kinetics in elective surgical patients receiving peptide or amino acid solutions. Nutrition 1991; 7:28-32. [PMID: 1802181] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
We compared the efficacy of two enteral solutions that were isonitrogenous and of identical amino acid composition but differed in that one solution contained only free amino acids whereas the other contained a mixture of free amino acids and peptides. Protein kinetics and nitrogen balance were evaluated in a group of six elective surgical patients. Primed-constant infusion with 15N-glycine was started 24h after gynecologic surgery and sustained over 3 days. During the first postoperative day, patients received enteral 0.45% saline. During postoperative days two and three, the patients received either the free amino acid solution or the mixture of peptides and free amino acids in a crossover design. There were no differences in protein kinetics or nitrogen balance with the two treatments.
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Affiliation(s)
- N Velasco
- Department of Research, Baptist Medical Centers, Birmingham, Alabama 35211
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35
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Velasco N, Long CL, Otto DA, Davis N, Geiger JW, Blakemore WS. Comparison of three methods for the estimation of total nitrogen losses in hospitalized patients. JPEN J Parenter Enteral Nutr 1990; 14:517-22. [PMID: 2232093 DOI: 10.1177/0148607190014005517] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.6] [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: 12/30/2022]
Abstract
Since the measurement of total nitrogen output (TNO) is not routinely determined in the clinical setting, its level is frequently estimated using formulas based on the urinary urea nitrogen excretion (UUN). We measured TNO in 124 surgical patients over 990 days (TNO, 19.22 +/- 8.72 g N/day; total urinary nitrogen (TUN) 18.17 +/- 8.70 g N/day; UUN, 15.17 +/- 7.70 g N/day; mean gastrointestinal nitrogen (MGIN) 0.68 +/- 0.49 g N/day; integumental nitrogen (ITGN), 0.34 +/- 0.08 g N/day) and compared the results with the daily estimations using three different formulas: formula A, UUN + 4; formula B, UUN x 1.20 + 1.05, where 1.20 is the reciprocal of the mean ratio UUN/TUN and 1.05 the mean extraurinary nitrogen losses; and formula C, UUN x 1.0986 + 2.55, derived from the regression analysis of UUN vs TNO. TNO estimated by these formulas were 19.17 +/- 7.70, 19.26 +/- 9.24, and 19.22 +/- 8.70 g N/day, respectively. The regression analyses of the estimated TNO from the three formulas versus the measured TNO indicated that formulas A, B and C were equally accurate in estimating TNO over the entire range of UUN. However, when only values of UUN greater than or equal to 30 g N were considered, a modified formula A (UUN + 6) was the best predictor of TNO. Daily audits of the differences between the estimated and measured TNO showed comparable results for the three formulas. In 28.4 to 31.1% of the observed days the differences were higher than +/- 2 g N/day, an error which is not acceptable when estimating the protein requirements in many clinical conditions.(ABSTRACT TRUNCATED AT 250 WORDS)
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Affiliation(s)
- N Velasco
- Department of Research, Baptist Medical Centers, Birmingham, AL 35211
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37
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Maíz A, Arteaga A, Villanueva CL, Velasco N, Acosta AM. [Cholestyramine in the treatment of hypercholesterolemia. Our experience in 11 cases]. Rev Med Chil 1990; 118:1009-13. [PMID: 2152729] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Bile acid sequestrant resins are considered agents of choice in the therapy of hypercholesterolemia non responsive to diet treatment. We evaluated the effects of cholestyramine, 12 g per day during 4 weeks, in 11 adult patients with severe hypercholesterolemia. Total cholesterol decreased from 414 +/- 112 to 302 +/- 140 mg/dl (28%), LDL cholesterol from 330 +/- 122 to 226 +/- 143 (33%) and Apo B lipoprotein from 141 +/- 31 to 115 +/- 34 mg/dl (18%), p < 0.01. HDL cholesterol including fractions HDL2 and HDL3, Apo A1 and Triglyceride levels were not modified. No significant side effects on gastrointestinal function were observed. Thus, we confirm that cholestyramine is an effective therapy for severe hypercholesterolemia.
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Affiliation(s)
- A Maíz
- Departamento Endocrinología, Metabolismo y Nutrición, Escuela de Medicina, Pontifica Universidad Católica de Chile, Santiago
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Velasco N, Díaz de Valdés M, Arteaga A, Acosta AM, Pellegrini MR, Foradori A. [The effect of anti-insulin antibodies and of peptide C residual secretion on the metabolic control of diabetes type 1]. Rev Med Chil 1990; 118:3-9. [PMID: 2152698] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
In 20 type I diabetic patients treated with conventional insulin preparations, we measured insulin antibodies and peptide C secretion. Peptide C levels 90 and 120 min after a standard breakfast correlated well with glucosylated Hb levels (r = -0.48 and -0.52, respectively). No correlation with free insulin levels was observed, in spite of a good correlation of the latter with blood glucose levels (r = -0.50 and -0.73, respectively). There was no relation between insulin antibody levels and peptide C or free insulin. Metabolic control was not affected by insulin antibodies. Insulin dose decreased in relation to the duration of the disease and reduction of body weight index and was not correlated to glycosylated Hb levels.
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Affiliation(s)
- N Velasco
- Departamento Endocrinología, Metabolismo y Nutrición, Facultad de Medicina, Universidad Católica de Chile, Santiago
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Pérez C, Alvarez M, Prat G, Velasco N. [A technique for preventing inadvertent withdrawal of the naso-enteral tube]. Rev Med Chil 1989; 117:836-7. [PMID: 2519442] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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Nervi F, Covarrubias C, Bravo P, Velasco N, Ulloa N, Cruz F, Fava M, Severín C, Del Pozo R, Antezana C. Influence of legume intake on biliary lipids and cholesterol saturation in young Chilean men. Identification of a dietary risk factor for cholesterol gallstone formation in a highly prevalent area. Gastroenterology 1989; 96:825-30. [PMID: 2783676] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/02/2022]
Abstract
Chileans and North American Indians have one of the highest prevalence rates of cholesterol gallstones in the world. The most common theory to explain this has been the operation of some as yet undefined genetic risk factor in these populations. Searching for some common environmental factor for gallstones in Chileans and North American Indians, we found that beans and other legumes are common foods consumed by both populations. In this study we tested the hypothesis that legume intake may favor the production of biliary cholesterol supersaturation. We studied 20 young men subjected to a diet containing 120 g/day of legumes and a control diet without legumes for a period of 1 mo each. Both diets supplied identical quantities of energy, carbohydrates, protein, total fat, fiber, and cholesterol. Low-density lipoprotein cholesterol concentration decreased by 16% (p less than 0.001) after the legume diet. Biliary cholesterol saturation increased in 19 of the 20 subjects; the mean of the group markedly increased from 110% to 169% (p less than 0.001) after the legume diet. These results are consistent with the hypothesis that legume intake is a potential risk factor for cholesterol gallstone disease.
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Affiliation(s)
- F Nervi
- Departamento de Gastroenterología, Facultad de Medicina, Pontificia Universidad Católica de Chile
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Main J, Velasco N, Catto GR, Fraser RA, Edward N, Adami S, O'Riordan JL. The effect of hemodialysis, vitamin D metabolites and renal transplantation on the skeletal demineralization associated with renal osteodystrophy: a computerized histomorphometric analysis. Clin Nephrol 1986; 26:279-87. [PMID: 3542321] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
Twenty-three patients with end-stage renal failure treated by hemodialysis or transplantation were followed for up to 10 years. Sequential full thickness iliac crest bone biopsies were obtained to assess the effects on bone disease of hemodialysis, treatment with 1,25-dihydroxycholecalciferol [1,25-(OH)2D3] and 24,25-dihydroxycholecalciferol [24,25-(OH)2D3] and renal transplantation. The biopsies were analyzed by a computerized histomorphometric technique which allowed accurate measurements of calcified bone and osteoid areas. Serum aluminum and parathyroid hormone concentrations were also monitored. Hemodialysis was associated with a loss of calcified bone and an increase in osteoid areas. The progressive bone loss was arrested but not reversed following treatment with either 1,25-(OH)2D3 or 24,25-(OH)2D3. Osteoid area was unchanged or reduced following treatment with 1,25-(OH)2D3 in all but three patients who had serum aluminum concentrations in excess of 5 mumol/l. 24,25-(OH)2D3 was not effective in reducing osteoid area, and combined treatment with 1,25 and 24,25-(OH)2D3 had no effect beyond that expected with 1,25-(OH)2D3 alone. Bone biopsies showed loss of calcified bone and an increase in osteoid areas one year and more after successful renal transplantation in five patients. Nineteen of the 23 patients developed serum aluminum concentrations greater than 3 mumol/l, probably because of the use of oral aluminum hydroxide as a phosphate binding agent. In these patients serum parathyroid hormone concentrations greater than 600 pg/ml appeared to prevent the development of osteopenia.
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Main J, Velasco N, Heyes SD, Whiting P, Fraser RA, Catto GR. The effect of the dihydroxylated metabolites of vitamin D and dietary phosphate restriction on bone disease in uraemic rats. Clin Sci (Lond) 1986; 71:539-43. [PMID: 3490349 DOI: 10.1042/cs0710539] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Uraemic rats maintained on either a high or a low phosphate diet for 12 weeks were allocated to one of the following oral vitamin D treatment groups and received: 1,25-dihydroxycholecalciferol [1, 25-(OH)2D3], 24,25-dihydroxycholecalciferol [24,25-(OH)2D3], both 1,25-(OH)2D3 and 24,25-(OH)2D3, or no vitamin D supplements. Mean serum creatinine concentrations were elevated to a similar extent in all groups. Mean serum concentrations of calcium, phosphate and alkaline phosphatase were not significantly different from normal in any of the groups. In the group receiving the high phosphate diet and no vitamin D supplements, calcified bone area measured by quantitative computerized histomorphometry was significantly lower than in the group receiving the low phosphate diet and no vitamin D supplements (0.01 greater than P greater than 0.001), and in the groups receiving high phosphate diet and either 1,25-(OH)2D3 (0.01 greater than P greater than 0.001) or 24,25-(OH)2D3 (0.01 greater than P greater than 0.001). We conclude that uraemic rats maintained on a high phosphate diet for 12 weeks develop skeletal demineralization, this process does not occur in rats on a low phosphate diet, and a decrease in calcified bone area may be prevented by treatment with either 1,25-(OH)2D3 or 24,25-(OH)2D3.
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Arteaga A, Velasco N, Maiz A, Villanueva C, Acosta AM. [High density lipoprotein cholesterol in obese non-insulin-dependent diabetic patients]. Rev Med Chil 1986; 114:509-15. [PMID: 3575945] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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Csendes A, Smok G, Braghetto I, Ramirez C, Velasco N, Henriquez A. Gastroesophageal sphincter pressure and histological changes in distal esophagus in patients with achalasia of the esophagus. Dig Dis Sci 1985; 30:941-5. [PMID: 4028910 DOI: 10.1007/bf01308293] [Citation(s) in RCA: 79] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
A prospective study was performed in 17 patients with achalasia of the esophagus determining the manometric characteristics of the gastroesophageal sphincter, correlating it with histological analysis by biopsies taken during surgery at the distal narrowed segment of the esophagus, at the location of the sphincter. The histological findings were compared to 10 control cases. Presence or absence of ganglion cells at the Auerbach's plexuses and appearance of smooth muscle fibers were evaluated. Only one case (6%) had Chagas' disease. The mean sphincter pressure was 41 mm Hg, with incomplete relaxation in all patients. Histological analysis showed a complete disappearance of ganglion cells in 94% of the cases and a decrease in the number of neurons with marked chronic inflammatory cells in one case (6%). In all control cases, the ganglion cells were normal. Smooth muscle fibers were normal on light microscopy. No relationship was found between resting gastroesophageal sphincter pressure, length and relaxation, and histological findings at the distal esophagus. These findings suggest that the denervation in the majority of cases is located in the Auerbach plexus, with complete absence of ganglion cells and, therefore, absence of postganglionic nerve fibers.
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Abstract
The purpose of this study has been to review the late results of surgical treatment of 244 patients with endoscopically proved benign chronic gastric ulcer located 5 cm or less from the cardia. In five patients, a total gastrectomy with esophagojejunostomy was performed. Proximal gastrectomy was used in 3 patients, mesogastrectomy in 5 patients, a partial Schoemaker's procedure in 73 patients, Pauchet's procedure in 70 patients, and Csendes' procedure in 23 patients. Nonresective procedures were employed in 67 patients and included the Kelling-Madlener procedure in 23 patients, pyloroplasty alone in 10 patients, gastrojejunostomy alone in 4 patients, local or wedge excision of the ulcer in 9 patients, and vagotomy and pyloroplasty in 21 patients. The follow-up evaluation was performed in 91 percent of the patients (mean 9 years postoperatively, range 5 to 15 years), with emptying endoscopy in all nonresected patients. A high mortality was observed after total or proximal gastrectomy, as well as after nonresective procedures. After the other resective techniques, low postoperative morbidity and mortality were observed. No recurrent ulcer was seen after the resective procedures. Based on these results, we propose that when the ulcer is located 5 cm below the cardia, Schoemaker's or Pauchet's procedure should be performed; if the ulcer is located 2 cm or less from the cardia, Csendes' procedure or the Kelling-Madlener procedure should be employed.
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Costamaillere L, Arteaga A, Velasco N, Pellegrino MR, Foradori A, López G, Acosta AM. [Islet beta-cell function in failures following sulfonylurea therapy in diabetics, by determination of serum C-peptide]. Rev Med Chil 1984; 112:1206-13. [PMID: 6399604] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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Abstract
Gastroesophageal reflux and clearance of the refluxed material can be measured by plotting a time-activity curve from an esophageal area of interest after 1 mCi of 99mTc sulfur colloid is placed in the stomach. Control subjects do not have peaks exceeding a value twice that of the baseline count levels. Reflux patients exceed this value, either spontaneously or after Valsalva maneuvers. This technique has a sensitivity which is greater than that of barium and equal to the sensitivity of a pH probe in patients with both moderate and severe reflux. Scintigraphic reflux was shown in 62% of moderate refluxes and 85% of those with severe reflux as defined clinically. Clearing of the refluxed material occurs rapidly in most patients if measured by this scintigraphic technique. This test can be performed rapidly with minimal radiation exposure and is noninvasive.
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Velasco N, Maiz A, Arteaga A, Galindo E, Bull M. [Trace elements in parenteral feeding. Evaluation of a solution for intravenous use]. Rev Med Chil 1984; 112:1002-8. [PMID: 6443032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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Velasco N, Catto GR, Edward N, Engeset J, Moffat MA. The effect of the dosage of steroids on the incidence of cytomegalovirus infections in renal transplant recipients. J Infect 1984; 9:69-78. [PMID: 6094670 DOI: 10.1016/s0163-4453(84)94576-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
In a retrospective survey of 92 cadaver renal transplant recipients, cytomegalovirus (CMV) infections were detected in 23 of 34 (68 per cent) patients treated with high doses of steroids but in only 27 of 58 (47 per cent) patients given low doses. Pretransplant blood transfusions were associated with both an improvement in one-year allograft survival-rates (P less than 0.05) and an increase in the incidence of CMV infections. When standardised for any transfusion effect, the incidence of CMV infections was significantly higher in those patients given high doses of steroids (P less than 0.05). In the same group of patients, moreover, CMV infections were associated with a statistically significant increase in the renal allograft survival-rate (P = 0.03).
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Arteaga A, Velasco N, Szegedi AM, Pellegrino MR, López G, Foradori A, Acosta AM. [The pancreatic reserve in diabetes mellitus by the determination of serum C-peptide using radioimmunoassay]. Rev Med Chil 1984; 112:321-9. [PMID: 6385178] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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