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Augier C, Baulieu G, Belov V, Bergé L, Billard J, Bres G, Bret J.L, Broniatowski A, Calvo M, Cazes A, Chaize D, Chala M, Chapellier M, Chaplinsky L, Chemin G, Chen R, Colas J, Cudmore E, De Jesus M, de Marcillac P, Dumoulin L, Exshaw O, Ferriol S, Figueroa-Feliciano E, Filippini JB, Formaggio JA, Fuard S, Gascon J, Giuliani A, Goupy J, Goy C, Guerin C, Guy E, Harrington P, Hertel SA, Heusch M, Hong Z, Ianigro JC, Jin Y, Juillard A, Karaivanov D, Kazarcev S, Lamblin J, Lattaud H, Li M, Lubashevskiy A, Marnieros S, Martini N, Mayer DW, Minet J, Monfardini A, Mounier F, Novati V, Olivieri E, Oriol C, Mateo LO, Patel PK, Perbet E, Pinckney HD, Poda DV, Ponomarev D, Rarbi F, Real JS, Redon T, Reyes FC, Robert A, Rozov S, Rozova I, Scorza S, Schmidt B, Shevchik Y, Soldner T, Stachurska J, Stutz A, Vagneron L, Van De Pontseele W, Vezzu F, Winslow L, Yakushev E, Zinatulina D. First demonstration of 30 eVee ionization energy resolution with Ricochet germanium cryogenic bolometers. Eur Phys J C Part Fields 2024; 84:186. [PMID: 38410744 PMCID: PMC10894082 DOI: 10.1140/epjc/s10052-024-12433-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/06/2023] [Accepted: 01/11/2024] [Indexed: 02/28/2024]
Abstract
The future Ricochet experiment aims to search for new physics in the electroweak sector by measuring the Coherent Elastic Neutrino-Nucleus Scattering process from reactor antineutrinos with high precision down to the sub-100 eV nuclear recoil energy range. While the Ricochet collaboration is currently building the experimental setup at the reactor site, it is also finalizing the cryogenic detector arrays that will be integrated into the cryostat at the Institut Laue Langevin in early 2024. In this paper, we report on recent progress from the Ge cryogenic detector technology, called the CryoCube. More specifically, we present the first demonstration of a 30 eVee (electron equivalent) baseline ionization resolution (RMS) achieved with an early design of the detector assembly and its dedicated High Electron Mobility Transistor (HEMT) based front-end electronics with a total input capacitance of about 40 pF. This represents an order of magnitude improvement over the best ionization resolutions obtained on similar phonon-and-ionization germanium cryogenic detectors from the EDELWEISS and SuperCDMS dark matter experiments, and a factor of three improvement compared to the first fully-cryogenic HEMT-based preamplifier coupled to a CDMS-II germanium detector with a total input capacitance of 250 pF. Additionally, we discuss the implications of these results in the context of the future Ricochet experiment and its expected background mitigation performance.
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Lomivorotov V, Merekin D, Fominskiy E, Ponomarev D, Bogachev-Prokophiev A, Zalesov A, Cherniavsky A, Shilova A, Guvakov D, Lomivorotova L, Lembo R, Landoni G. Myocardial protection with phosphocreatine in high-risk cardiac surgery patients: a randomized trial. BMC Anesthesiol 2023; 23:389. [PMID: 38030971 PMCID: PMC10685505 DOI: 10.1186/s12871-023-02341-4] [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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Accepted: 11/06/2023] [Indexed: 12/01/2023] Open
Abstract
BACKGROUND This study was conducted to test the hypothesis that phosphocreatine (PCr), administered intravenously and as cardioplegia adjuvant in patients undergoing cardiac surgery with prolonged aortic cross clamping and cardiopulmonary bypass (CPB) time, would decrease troponin I concentration after surgery. METHODS In this randomized, double-blind, placebo-controlled pilot study we included 120 patients undergoing double/triple valve repair/replacement under cardiopulmonary bypass in the cardiac surgery department of a tertiary hospital. The treatment group received: intravenous administration of 2 g of PCr after anesthesia induction; 2.5 g of PCr in every 1 L of cardioplegic solution (concentration = 10 mmol/L); intravenous administration of 2 g of PCr immediately after heart recovery following aorta declamping; 4 g of PCr at intensive care unit admission. The control group received an equivolume dose of normosaline. RESULTS The primary endpoint was peak concentration of troponin I after surgery. Secondary endpoints included peak concentration of serum creatinine, need for, and dosage of inotropic support, number of defibrillations after aortic declamping, incidence of arrhythmias, duration of Intensive Care Unit (ICU) stay, length of hospitalization. There was no difference in peak troponin I concentration after surgery (PCr, 10,508 pg/ml [IQR 6,838-19,034]; placebo, 11,328 pg/ml [IQR 7.660-22.894]; p = 0.24). There were also no differences in median peak serum creatinine (PCr, 100 µmol/L [IQR 85.0-117.0]; placebo, 99.5 µmol/L [IQR 90.0-117.0]; p = 0.87), the number of patients on vasopressor/inotropic agents (PCr, 49 [88%]; placebo, 57 [91%]; p = 0.60), the inotropic score on postoperative day 1 (PCr, 4.0 (0-7); placebo, 4.0 (0-10); p = 0.47), mean SOFA score on postoperative day 1 (PCr, 5.25 ± 2.33; placebo, 5,45 ± 2,65; p = 0.83), need for defibrillation after declamping of aorta (PCr, 22 [39%]; placebo, 25 [40%]; p = 0.9),, duration of ICU stay and length of hospitalization as well as 30-day mortality (PCr, 0 (0%); placebo,1 (4.3%); p = 0.4). CONCLUSION PCr administration to patients undergoing double/triple valve surgery under cardiopulmonary bypass is safe but is not associated with a decrease in troponin I concentration. Phosphocreatine had no beneficial effect on clinical outcomes after surgery. TRIAL REGISTRATION The study is registered at ClinicalTrials.gov with the Identifier: NCT02757443. First posted (published): 02/05/2016.
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Affiliation(s)
- Vladimir Lomivorotov
- Department of Anesthesiology and Perioperative Medicine, Penn State College of Medicine, Penn State Milton S. Hershey Medical Center, Hershey, PA, USA
- Department of Anesthesiology and Intensive Care, E. Meshalkin National Medical Research Center, Novosibirsk, Russia
| | - Dmitry Merekin
- Department of Anesthesiology and Intensive Care, E. Meshalkin National Medical Research Center, Novosibirsk, Russia
| | - Evgeny Fominskiy
- Department of Anesthesia and Intensive Care, IRCCS San Raffaele Scientific Institute, Via Olgettina 60, 20132, Milan, Italy
| | - Dmitry Ponomarev
- Department of Anesthesiology and Intensive Care, E. Meshalkin National Medical Research Center, Novosibirsk, Russia
| | | | - Anton Zalesov
- Department of Heart Valve Surgery, E. Meshalkin National Medical Research Center, Novosibirsk, Russia
| | - Alexander Cherniavsky
- Department of Aortic and Coronary Artery Surgery, E. Meshalkin National Medical Research Center, Novosibirsk, Russia
| | - Anna Shilova
- Department of Anesthesiology and Intensive Care, E. Meshalkin National Medical Research Center, Novosibirsk, Russia
| | - Dmitry Guvakov
- Department of Anesthesiology and Perioperative Medicine, Penn State College of Medicine, Penn State Milton S. Hershey Medical Center, Hershey, PA, USA
| | - Liudmila Lomivorotova
- Department of Anesthesiology and Intensive Care, E. Meshalkin National Medical Research Center, Novosibirsk, Russia
| | - Rosalba Lembo
- Department of Anesthesia and Intensive Care, IRCCS San Raffaele Scientific Institute, Via Olgettina 60, 20132, Milan, Italy
| | - Giovanni Landoni
- Department of Anesthesia and Intensive Care, IRCCS San Raffaele Scientific Institute, Via Olgettina 60, 20132, Milan, Italy.
- Vita-Salute San Raffaele University, Milan, Italy.
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Martin-Loeches I, Torres A, Nagavci B, Aliberti S, Antonelli M, Bassetti M, Bos LD, Chalmers JD, Derde L, De Waele J, Garnacho-Montero J, Kollef M, Luna CM, Menendez R, Niederman MS, Ponomarev D, Restrepo MI, Rigau D, Schultz MJ, Weiss E, Welte T, Wunderink R. Correction: ERS/ESICM/ESCMID/ALAT guidelines for the management of severe community-acquired pneumonia. Intensive Care Med 2023; 49:1040-1041. [PMID: 37195462 DOI: 10.1007/s00134-023-07082-z] [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: 05/18/2023]
Affiliation(s)
- Ignacio Martin-Loeches
- Department of Intensive Care Medicine, Multidisciplinary Intensive Care Research Organisation (MICRO), St James's Hospital, Dublin, Ireland.
- Trinity College Dublin, Dublin, Ireland.
- CIBER of Respiratory Diseases (CIBERES), Institute of Health Carlos III, Madrid, Spain.
- Pulmonary Department, Hospital Clinic, Universitat de Barcelona, IDIBAPS, ICREA, Barcelona, Spain.
| | - Antoni Torres
- CIBER of Respiratory Diseases (CIBERES), Institute of Health Carlos III, Madrid, Spain
- Pulmonary Department, Hospital Clinic, Universitat de Barcelona, IDIBAPS, ICREA, Barcelona, Spain
| | - Blin Nagavci
- Faculty of Medicine, Institute for Evidence in Medicine, Medical Centre-University of Freiburg, University of Freiburg, Freiburg, Germany
| | - Stefano Aliberti
- Department of Biomedical Sciences, Humanitas University, Pieve Emanuele, Italy
- Respiratory Unit, IRCCS Humanitas Research Hospital, Rozzano, Italy
| | | | - Matteo Bassetti
- Infectious Disease Clinic, Department of Health Sciences, Ospedale Policlinico San Martino IRCCS, University of Genoa, Genoa, Italy
| | - Lieuwe D Bos
- Department of Intensive Care and Laboratory for Experimental Intensive Care and Anesthesiology (LEICA), Amsterdam UMC, Location AMC, Amsterdam, The Netherlands
| | - James D Chalmers
- Division of Molecular and Clinical Medicine, University of Dundee, Dundee, UK
| | - Lennie Derde
- Department of Intensive Care Medicine, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
| | - Jan De Waele
- Department of Critical Care Medicine, Ghent University Hospital, Ghent, Belgium
| | | | - Marin Kollef
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Washington University School of Medicine in St. Louis, St. Louis, MO, USA
| | - Carlos M Luna
- Department of Medicine, Pulmonary Diseases Division, Hospital de Clínicas, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Rosario Menendez
- Pneumology Service, Universitary and Politechnic Hospital La Fe, Valencia, Spain
| | - Michael S Niederman
- Pneumology Service, Universitary and Politechnic Hospital La Fe, Valencia, Spain
| | - Dmitry Ponomarev
- Interdepartmental Division of Critical Care Medicine, University of Toronto, Toronto, ON, Canada
- Department of Intensive Care, E.N. Meshalkin National Medical Research Center, Novosibirsk, Russian Federation
| | - Marcos I Restrepo
- South Texas Veterans Health Care System, Audie L. Murphy Memorial Veterans Hospital, and University of Texas Health, San Antonio, TX, USA
| | - David Rigau
- Centre Cochrane Iberoamericà-Institut d'Investigació Biomèdica Sant Pau, Hospital de La Santa Creu I Sant Pau, Barcelona, Spain
| | - Marcus J Schultz
- Department of Intensive Care and Laboratory for Experimental Intensive Care and Anesthesiology (LEICA), Amsterdam UMC, Location AMC, Amsterdam, The Netherlands
- Mahidol Oxford Tropical Medicine Research Unit (MORU), Mahidol University, Bangkok, Thailand
- Nuffield Department of Medicine, University of Oxford, Oxford, UK
| | - Emmanuel Weiss
- Department of Anaesthesiology and Critical Care, Hôpital Beaujon, DMU PARABOL, AP-HP Nord and Université de Paris, Clichy, France
| | - Tobias Welte
- Department of Respiratory Medicine and Infectious Disease, Member of the German Center of Lung Research, Hannover School of Medicine, Hannover, Germany
| | - Richard Wunderink
- Department of Medicine, Division of Pulmonary and Critical Care, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
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Martin-Loeches I, Torres A, Nagavci B, Aliberti S, Antonelli M, Bassetti M, Bos LD, Chalmers JD, Derde L, de Waele J, Garnacho-Montero J, Kollef M, Luna CM, Menendez R, Niederman MS, Ponomarev D, Restrepo MI, Rigau D, Schultz MJ, Weiss E, Welte T, Wunderink R. ERS/ESICM/ESCMID/ALAT guidelines for the management of severe community-acquired pneumonia. Intensive Care Med 2023; 49:615-632. [PMID: 37012484 PMCID: PMC10069946 DOI: 10.1007/s00134-023-07033-8] [Citation(s) in RCA: 33] [Impact Index Per Article: 33.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Accepted: 12/01/2022] [Indexed: 04/05/2023]
Abstract
PURPOSE Severe community-acquired pneumonia (sCAP) is associated with high morbidity and mortality, and whilst European and non-European guidelines are available for community-acquired pneumonia, there are no specific guidelines for sCAP. METHODS The European Respiratory Society (ERS), European Society of Intensive Care Medicine (ESICM), European Society of Clinical Microbiology and Infectious Diseases (ESCMID), and Latin American Thoracic Association (ALAT) launched a task force to develop the first international guidelines for sCAP. The panel comprised a total of 18 European and four non-European experts, as well as two methodologists. Eight clinical questions for sCAP diagnosis and treatment were chosen to be addressed. Systematic literature searches were performed in several databases. Meta-analyses were performed for evidence synthesis, whenever possible. The quality of evidence was assessed with GRADE (Grading of Recommendations, Assessment, Development and Evaluation). Evidence to Decision frameworks were used to decide on the direction and strength of recommendations. RESULTS Recommendations issued were related to diagnosis, antibiotics, organ support, biomarkers and co-adjuvant therapy. After considering the confidence in effect estimates, the importance of outcomes studied, desirable and undesirable consequences of treatment, cost, feasibility, acceptability of the intervention and implications to health equity, recommendations were made for or against specific treatment interventions. CONCLUSIONS In these international guidelines, ERS, ESICM, ESCMID, and ALAT provide evidence-based clinical practice recommendations for diagnosis, empirical treatment, and antibiotic therapy for sCAP, following the GRADE approach. Furthermore, current knowledge gaps have been highlighted and recommendations for future research have been made.
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Affiliation(s)
- Ignacio Martin-Loeches
- Department of Intensive Care Medicine, Multidisciplinary Intensive Care Research Organisation (MICRO), St James's Hospital, Dublin, Ireland.
- Trinity College Dublin, Dublin, Ireland.
- CIBER of Respiratory Diseases (CIBERES), Institute of Health Carlos III, Madrid, Spain.
- Pulmonary Department, Hospital Clinic, Universitat de Barcelona, IDIBAPS, ICREA, Barcelona, Spain.
| | - Antoni Torres
- CIBER of Respiratory Diseases (CIBERES), Institute of Health Carlos III, Madrid, Spain
- Pulmonary Department, Hospital Clinic, Universitat de Barcelona, IDIBAPS, ICREA, Barcelona, Spain
| | - Blin Nagavci
- Faculty of Medicine, Institute for Evidence in Medicine, Medical Centre-University of Freiburg, University of Freiburg, Freiburg, Germany
| | - Stefano Aliberti
- Department of Biomedical Sciences, Humanitas University, Pieve Emanuele, Italy
- Respiratory Unit, IRCCS Humanitas Research Hospital, Rozzano, Italy
| | | | - Matteo Bassetti
- Infectious Disease Clinic, Department of Health Sciences, Ospedale Policlinico San Martino IRCCS, University of Genoa, Genoa, Italy
| | - Lieuwe D Bos
- Department of Intensive Care and Laboratory for Experimental Intensive Care and Anesthesiology (LEICA), Amsterdam UMC, Location AMC, Amsterdam, The Netherlands
| | - James D Chalmers
- Division of Molecular and Clinical Medicine, University of Dundee, Dundee, UK
| | - Lennie Derde
- Department of Intensive Care Medicine, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
| | - Jan de Waele
- Department of Critical Care Medicine, Ghent University Hospital, Ghent, Belgium
| | | | - Marin Kollef
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Washington University School of Medicine in St. Louis, St. Louis, MO, USA
| | - Carlos M Luna
- Neumonología, Hospital de Clínicas, UBA, Buenos Aires, Argentina
| | - Rosario Menendez
- Pneumology Service, Universitary and Politechnic Hospital La Fe, Valencia, Spain
| | - Michael S Niederman
- Pneumology Service, Universitary and Politechnic Hospital La Fe, Valencia, Spain
| | - Dmitry Ponomarev
- Interdepartmental Division of Critical Care Medicine, University of Toronto, Toronto, ON, Canada
- Department of Intensive Care, E.N. Meshalkin National Medical Research Center, Novosibirsk, Russian Federation
| | - Marcos I Restrepo
- South Texas Veterans Health Care System, Audie L. Murphy Memorial Veterans Hospital, and University of Texas Health, San Antonio, TX, USA
| | - David Rigau
- Centre Cochrane Iberoamericà-Institut d'Investigació Biomèdica Sant Pau, Hospital de La Santa Creu I Sant Pau, Barcelona, Spain
| | - Marcus J Schultz
- Department of Intensive Care and Laboratory for Experimental Intensive Care and Anesthesiology (LEICA), Amsterdam UMC, Location AMC, Amsterdam, The Netherlands
- Mahidol Oxford Tropical Medicine Research Unit (MORU), Mahidol University, Bangkok, Thailand
- Nuffield Department of Medicine, University of Oxford, Oxford, UK
| | - Emmanuel Weiss
- Department of Anaesthesiology and Critical Care, Hôpital Beaujon, DMU PARABOL, AP-HP Nord and Université de Paris, Clichy, France
| | - Tobias Welte
- Department of Respiratory Medicine and Infectious Disease, Member of the German Center of Lung Research, Hannover School of Medicine, Hannover, Germany
| | - Richard Wunderink
- Department of Medicine, Division of Pulmonary and Critical Care, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
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Steinberg JS, Blount N, Ponomarev D, Shabanov V, Pokushalov E, Romanov A. The Evaluate Renal Artery Denervation in Addition to Catheter Ablation to Eliminate Atrial Fibrillation (ERADICATE-AF) trial: arrhythmia suppression, blood pressure control, and potential interactions. Europace 2023; 25:euad107. [PMID: 37084084 PMCID: PMC10228602 DOI: 10.1093/europace/euad107] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Accepted: 03/18/2023] [Indexed: 04/22/2023] Open
Affiliation(s)
- Jonathan S Steinberg
- Clinical Cardiovascular Research Center, University of Rochester Medical Center, 601 Elmwood Avenue, Rochester, New York 14642, USA
- Hackensack Meridian School of Medicine, 123 Metro Blvd, Nutley, NJ 07110, USA
| | - Nicholas Blount
- Hackensack Meridian School of Medicine, 123 Metro Blvd, Nutley, NJ 07110, USA
| | - Dmitry Ponomarev
- Meshalkin National Medical Research Center, Novosibirsk, Russian Federation
| | - Vitaly Shabanov
- Meshalkin National Medical Research Center, Novosibirsk, Russian Federation
| | - Evgeny Pokushalov
- Center of the New Medical Technologies, Novosibirsk, Russian Federation
| | - Alexander Romanov
- Meshalkin National Medical Research Center, Novosibirsk, Russian Federation
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Martinez-Zapata MJ, Salvador I, Martí-Carvajal AJ, Pijoan JI, Cordero JA, Ponomarev D, Kernohan A, Solà I, Virgili G. Anti-vascular endothelial growth factor for proliferative diabetic retinopathy. Cochrane Database Syst Rev 2023; 3:CD008721. [PMID: 36939655 PMCID: PMC10026605 DOI: 10.1002/14651858.cd008721.pub3] [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] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 03/21/2023]
Abstract
BACKGROUND Proliferative diabetic retinopathy (PDR) is an advanced complication of diabetic retinopathy that can cause blindness. It consists of the presence of new vessels in the retina and vitreous haemorrhage. Although panretinal photocoagulation (PRP) is the treatment of choice for PDR, it has secondary effects that can affect vision. Anti-vascular endothelial growth factor (anti-VEGF), which produces an inhibition of vascular proliferation, could improve the vision of people with PDR. OBJECTIVES To assess the effectiveness and safety of anti-VEGFs for PDR and summarise any relevant economic evaluations of their use. SEARCH METHODS We searched CENTRAL (which contains the Cochrane Eyes and Vision Trials Register; 2022, Issue 6); Ovid MEDLINE; Ovid Embase; the ISRCTN registry; ClinicalTrials.gov, and the WHO ICTRP. We did not use any date or language restrictions. We last searched the electronic databases on 1 June 2022. SELECTION CRITERIA We included randomised controlled trials (RCTs) comparing anti-VEGFs to another active treatment, sham treatment, or no treatment for people with PDR. We also included studies that assessed the combination of anti-VEGFs with other treatments. We excluded studies that used anti-VEGFs in people undergoing vitrectomy. DATA COLLECTION AND ANALYSIS Two review authors independently selected studies for inclusion, extracted data, and assessed the risk of bias (RoB) for all included trials. We calculated the risk ratio (RR) or the mean difference (MD), and 95% confidence intervals (CI). We used GRADE to assess the certainty of evidence. MAIN RESULTS We included 15 new studies in this update, bringing the total to 23 RCTs with 1755 participants (2334 eyes). Forty-five per cent of participants were women and 55% were men, with a mean age of 56 years (range 48 to 77 years). The mean glycosylated haemoglobin (Hb1Ac) was 8.45% for the PRP group and 8.25% for people receiving anti-VEGFs alone or in combination. Twelve studies included people with PDR, and participants in 11 studies had high-risk PDR (HRPDR). Twelve studies were of bevacizumab, seven of ranibizumab, one of conbercept, two of pegaptanib, and one of aflibercept. The mean number of participants per RCT was 76 (ranging from 15 to 305). Most studies had an unclear or high RoB, mainly in the blinding of interventions and outcome assessors. A few studies had selective reporting and attrition bias. No study reported loss or gain of 3 or more lines of visual acuity (VA) at 12 months. Anti-VEGFs ± PRP probably increase VA compared with PRP alone (mean difference (MD) -0.08 logMAR, 95% CI -0.12 to -0.04; I2 = 28%; 10 RCTS, 1172 eyes; moderate-certainty evidence). Anti-VEGFs ± PRP may increase regression of new vessels (MD -4.14 mm2, 95% CI -6.84 to -1.43; I2 = 75%; 4 RCTS, 189 eyes; low-certainty evidence) and probably increase a complete regression of new vessels (RR 1.63, 95% CI 1.19 to 2.24; I2 = 46%; 5 RCTS, 405 eyes; moderate-certainty evidence). Anti-VEGFs ± PRP probably reduce vitreous haemorrhage (RR 0.72, 95% CI 0.57 to 0.90; I2 = 0%; 6 RCTS, 1008 eyes; moderate-certainty evidence). Anti-VEGFs ± PRP may reduce the need for vitrectomy compared with eyes that received PRP alone (RR 0.67, 95% CI 0.49 to 0.93; I2 = 43%; 8 RCTs, 1248 eyes; low-certainty evidence). Anti-VEGFs ± PRP may result in little to no difference in the quality of life compared with PRP alone (MD 0.62, 95% CI -3.99 to 5.23; I2 = 0%; 2 RCTs, 382 participants; low-certainty evidence). We do not know if anti-VEGFs ± PRP compared with PRP alone had an impact on adverse events (very low-certainty evidence). We did not find differences in visual acuity in subgroup analyses comparing the type of anti-VEGFs, the severity of the disease (PDR versus HRPDR), time to follow-up (< 12 months versus 12 or more months), and treatment with anti-VEGFs + PRP versus anti-VEGFs alone. The main reasons for downgrading the certainty of evidence included a high RoB, imprecision, and inconsistency of effect estimates. AUTHORS' CONCLUSIONS Anti-VEGFs ± PRP compared with PRP alone probably increase visual acuity, but the degree of improvement is not clinically meaningful. Regarding secondary outcomes, anti-VEGFs ± PRP produce a regression of new vessels, reduce vitreous haemorrhage, and may reduce the need for vitrectomy compared with eyes that received PRP alone. We do not know if anti-VEGFs ± PRP have an impact on the incidence of adverse events and they may have little or no effect on patients' quality of life. Carefully designed and conducted clinical trials are required, assessing the optimal schedule of anti-VEGFs alone compared with PRP, and with a longer follow-up.
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Affiliation(s)
- Maria José Martinez-Zapata
- Iberoamerican Cochrane Centre, Biomedical Research Institute Sant Pau (IIB Sant Pau), CIBER Epidemiología y Salud Pública (CIBERESP), Barcelona, Spain
| | | | - Arturo J Martí-Carvajal
- Facultad de Ciencias de la Salud Eugenio Espejo, Universidad UTE (Cochrane Ecuador), Quito, Ecuador
- Universidad Francisco de Vitoria, Facultad de Medicina Cochrane Madrid, Madrid, Spain
- Cátedra Rectoral de Medicina Basada en la Evidencia, Universidad de Carabobo, Valencia, Venezuela
| | - José I Pijoan
- Hospital Universitario Cruces, Barakaldo, Spain
- BioCruces-Bizkaia Research Institute, CIBER Epidemiología y Salud Pública (CIBERESP), Barakaldo, Spain
| | - José A Cordero
- Blanquerna School of Health Sciences, Universitat Ramon Llull, Barcelona, Spain
| | - Dmitry Ponomarev
- Interdepartmental Division of Critical Care Medicine, University of Toronto, Toronto, Canada
| | - Ashleigh Kernohan
- Population Health Sciences Institute, Newcastle University, Newcastle upon Tyne, UK
| | - Ivan Solà
- Iberoamerican Cochrane Centre, Biomedical Research Institute Sant Pau (IIB Sant Pau), CIBER Epidemiología y Salud Pública (CIBERESP), Barcelona, Spain
| | - Gianni Virgili
- Department of Neurosciences, Psychology, Drug Research and Child Health (NEUROFARBA), University of Florence, Florence, Italy
- Centre for Public Health, Queen's University Belfast, Belfast, UK
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7
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Losik D, Romanov A, Grazhdankin I, Shabanov V, Ponomarev D, Mikheenko I, Peregudov I, Filippenko A, Bondar N, Boersma L, Steinberg JS. Feasibility of concomitant left atrial appendage closure and percutaneous coronary intervention in patients with acute coronary syndrome and atrial fibrillation: a randomized pilot study. Heart Vessels 2023; 38:881-888. [PMID: 36695858 DOI: 10.1007/s00380-023-02236-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [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: 09/05/2022] [Accepted: 01/18/2023] [Indexed: 01/26/2023]
Abstract
The optimal approach for prevention of cardiovascular events and reduction of bleeding in patients with acute coronary syndrome (ACS) and atrial fibrillation (AF) is still controversial. The aim of our study is to asses our single-center experience with concomitant left atrial appendage occlusion (LAAO) and percutaneous coronary intervention (PCI). 50 patients with ACS without ST elevation and history of AF were randomized after successful PCI to LAAO or conventional medical therapy. The primary endpoints were safety and length of hospitalization. The follow-up period was 30 days. The mean procedural times were 113 ± 23 min PCI + LAAO implantation and 39 ± 19 min of PCI only (p < 0.001), while mean fluoroscopy times were 18 ± 8 min and 12 ± 8 min (p < 0.001), respectively. No procedure-related complications were observed. There was no difference observed for length of hospitalization between two groups. LAAO in patients with ACS and AF undergoing PCI appears safe.
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Affiliation(s)
- Denis Losik
- E. Meshalkin National Medical Research Center of the Ministry of Health of the Russian Federation, Novosibirsk, Russian Federation.
| | - Alexander Romanov
- E. Meshalkin National Medical Research Center of the Ministry of Health of the Russian Federation, Novosibirsk, Russian Federation
| | - Igor Grazhdankin
- E. Meshalkin National Medical Research Center of the Ministry of Health of the Russian Federation, Novosibirsk, Russian Federation
| | - Vitaly Shabanov
- E. Meshalkin National Medical Research Center of the Ministry of Health of the Russian Federation, Novosibirsk, Russian Federation
| | - Dmitry Ponomarev
- E. Meshalkin National Medical Research Center of the Ministry of Health of the Russian Federation, Novosibirsk, Russian Federation
| | - Igor Mikheenko
- E. Meshalkin National Medical Research Center of the Ministry of Health of the Russian Federation, Novosibirsk, Russian Federation
| | - Ivan Peregudov
- E. Meshalkin National Medical Research Center of the Ministry of Health of the Russian Federation, Novosibirsk, Russian Federation
| | - Alexey Filippenko
- E. Meshalkin National Medical Research Center of the Ministry of Health of the Russian Federation, Novosibirsk, Russian Federation
| | - Nikolay Bondar
- Federal Center of Cardiovascular Surgery, Khabarovsk, Russian Federation
| | - Lucas Boersma
- Department of Cardiology, St Antonius Hospital Nieuwegein, Amsterdam UMC, Amsterdam, The Netherlands
| | - Jonathan S Steinberg
- Cardiovascular Research Center, University of Rochester School of Medicine and Dentistry, Rochester, NY, USA
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8
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Ponomarev D, Brochard L, Goligher E. Expiratory Muscle Relaxation-Induced Ventilator Triggering: A New Dyssynchrony or an Established Physiological Phenomenon? Chest 2022; 162:e342-e343. [PMID: 36494140 DOI: 10.1016/j.chest.2022.08.2224] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Accepted: 08/10/2022] [Indexed: 12/12/2022] Open
Affiliation(s)
- Dmitry Ponomarev
- Interdepartmental Division of Critical Care Medicine, University of Toronto, Toronto, ON, Canada.
| | - Laurent Brochard
- Interdepartmental Division of Critical Care Medicine, University of Toronto, Toronto, ON, Canada
| | - Ewan Goligher
- Interdepartmental Division of Critical Care Medicine, University of Toronto, Toronto, ON, Canada
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9
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Alekseev I, Balej K, Belov V, Evseev S, Filosofov D, Fomina M, Hons Z, Karaivanov D, Kazartsev S, Khushvaktov J, Kuznetsov A, Lubashevskiy A, Medvedev D, Ponomarev D, Rakhimov A, Shakhov K, Shevchik E, Shirchenko M, Smolek K, Rozov S, Rozova I, Vasilyev S, Yakushev E, Zhitnikov I. First results of the
νGeN
experiment on coherent elastic neutrino-nucleus scattering. Int J Clin Exp Med 2022. [DOI: 10.1103/physrevd.106.l051101] [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: 11/07/2022]
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10
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Benimetskaya K, Mikheenko I, Ponomarenko A, Krivosheev Y, Ponomarev D, Losik D. A new clinical decision support system based on personalized evidence-based medicine in lipid lowering therapies. Atherosclerosis 2022. [DOI: 10.1016/j.atherosclerosis.2022.06.852] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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11
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Lomivorotov V, Ponomarev D, Boboshko V, Shmyrev V, Ismoilov S, Efremov S, Kamenshchikov N, Akselrod B, Pasyuga V, Urusov D, Ovezov A, Evdokimov M, Turchaninov A, Bogachev-Prokofiev A, Bukamal N, Afifi S, Belletti A, Bellomo R, Landoni G. Calcium administration In patients undergoing CardiAc suRgery under cardiopulmonary bypasS (ICARUS trial): Rationale and design of a randomized controlled trial. Contemp Clin Trials Commun 2021; 23:100835. [PMID: 34485754 PMCID: PMC8406154 DOI: 10.1016/j.conctc.2021.100835] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2020] [Revised: 07/27/2021] [Accepted: 08/17/2021] [Indexed: 11/18/2022] Open
Abstract
Introduction Weaning from cardiopulmonary bypass (CPB) is a critical step of any cardiac surgical procedure and often requires pharmacologic intervention. Calcium ions are pivotal elements for the excitation-contraction coupling process of cardiac myocytes. Thus, calcium administration might be helpful during weaning from CPB. Methods We describe a multicenter, placebo-controlled, double blind randomized clinical trial to assess the effect of calcium chloride on the need for inotropic support among adult patients during weaning from CPB. The experimental group (409 patients) will receive 15 mg/kg of calcium chloride. The control group (409 patients) will receive an equivalent volume of 0.9% sodium chloride. Both drugs will be administered intravenously as a bolus at the beginning of weaning from CPB. Results The primary outcome will be the need for inotropic support between termination of CPB and completion of surgery. Secondary outcomes will be: duration of inotropic support, vasoactive-inotropic score 30 min after transfer to intensive care unit and on postoperative day 1, plasma alpha-amylase on postoperative day 1, plasma Ca2+ concentration immediately before and 10–15 min after calcium chloride administration, non-fatal myocardial infarction, blood loss on postoperative day 1, need for transfusion of red blood cells, signs of myocardial ischemia on electrocardiogram after arrival to intensive care unit, all-cause mortality at 30 days or during hospital stay if this is longer than 30 days. Discussion This trial is designed to assess whether intravenous calcium chloride administration could reduce the need for inotropic support after cardiopulmonary bypass weaning among adults undergoing cardiac surgery.
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Affiliation(s)
- Vladimir Lomivorotov
- E. Meshalkin National Medical Research Centre, Novosibirsk, Russian Federation
- Novosibirsk State University, Novosibirsk, Russian Federation
| | - Dmitry Ponomarev
- E. Meshalkin National Medical Research Centre, Novosibirsk, Russian Federation
- Corresponding author.
| | - Vladimir Boboshko
- E. Meshalkin National Medical Research Centre, Novosibirsk, Russian Federation
| | - Vladimir Shmyrev
- E. Meshalkin National Medical Research Centre, Novosibirsk, Russian Federation
| | - Samandar Ismoilov
- E. Meshalkin National Medical Research Centre, Novosibirsk, Russian Federation
| | - Sergey Efremov
- Saint Petersburg State University Hospital, Saint Petersburg, Russian Federation
| | - Nikolay Kamenshchikov
- Сardiology Research Institute, Tomsk National Research Medical Center, Russian Academy of Sciences, Tomsk, Russian Federation
| | - Boris Akselrod
- Petrovsky National Research Centre of Surgery, Moscow, Russian Federation
| | - Vadim Pasyuga
- Federal Center for Cardiovascular Surgery, Astrakhan, Russian Federation
| | - Dmitry Urusov
- District Clinical Hospital, Khanty-Mansiysk, Russian Federation
| | - Alexey Ovezov
- Moscow Regional Research and Clinical Institute (MONIKI), Moscow, Russian Federation
| | - Mikhail Evdokimov
- Federal Center for Cardiovascular Surgery, Penza, Russian Federation
| | | | | | - Nazar Bukamal
- Sh. Mohammed Bin Khalifa Bin Sulman Al-Khalifa Cardiac Center, Awali, Bahrain
| | - Sarah Afifi
- King Abdullah Medical City, Makkah, Saudi Arabia
| | | | | | - Giovanni Landoni
- IRCCS San Raffaele Scientific Institute, Milan, Italy
- Vita-Salute San Raffaele University, Milan, Italy
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12
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Romanov A, Minin S, Nikitin N, Ponomarev D, Shabanov V, Losik D, Steinberg JS. The relationship between global cardiac and regional left atrial sympathetic innervation and epicardial fat in patients with atrial fibrillation. Ann Nucl Med 2021; 35:1079-1088. [PMID: 34128159 DOI: 10.1007/s12149-021-01643-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Accepted: 06/08/2021] [Indexed: 10/21/2022]
Abstract
AIM To investigate the relationship between epicardial adipose tissue (EAT) volume and distribution and the parameters of global cardiac and regional left atrial (LA) sympathetic activity in patients with atrial fibrillation (AF). METHODS AND RESULTS The data of the 45 consecutive patients scheduled for an index catheter ablation (CA) for AF were analyzed. Total and peri-atrial EAT volumes were measured by cardiac CT. Parameters of global cardiac sympathetic activity and discrete sympathetic regions around LA were assessed by 123I-mIBG SPECT/CT. The patients were followed up for AF recurrences assessment during 12 months after CA. A total of 133 (mean per patient 2.96 ± 1.07) discrete 123I-mIBG uptake areas (DUAs), corresponding to typical anatomical locations of LA ganglionated plexi (GP), were identified. Peri-atrial EAT volume was associated with the number of DUAs (regression estimate, 5.1 [95% CI, 0.3-9.9], p = 0.03). There was no statistically significant association between either total or peri-atrial EAT volumes and risks of AF recurrence. The washout rate (WR) was associated with reduced risk of AF recurrence (HR = 0.95; 95% CI 0.92-0.99; p = 0.01), while left ventricular (LV) myocardium 123I-mIBG summed defect score (SDS) was linked to increased hazards of AF recurrence (HR = 1.04; 95% CI 1.01-1.08; p = 0.03). CONCLUSION Peri-atrial EAT volume is associated with regions of sympathetic activity corresponding to typical anatomical locations of LA GP. The WR was associated with reduced risk of AF recurrence while LV myocardial SDS was linked to increased hazards of AF recurrence.
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Affiliation(s)
- Alexander Romanov
- E. Meshalkin National Medical Research Center of the Ministry of Health of the Russian Federation, Rechkunovskaya str.15, 630055, Novosibirsk, Russian Federation
| | - Stanislav Minin
- E. Meshalkin National Medical Research Center of the Ministry of Health of the Russian Federation, Rechkunovskaya str.15, 630055, Novosibirsk, Russian Federation
| | - Nikita Nikitin
- E. Meshalkin National Medical Research Center of the Ministry of Health of the Russian Federation, Rechkunovskaya str.15, 630055, Novosibirsk, Russian Federation.
| | - Dmitry Ponomarev
- E. Meshalkin National Medical Research Center of the Ministry of Health of the Russian Federation, Rechkunovskaya str.15, 630055, Novosibirsk, Russian Federation
| | - Vitaly Shabanov
- E. Meshalkin National Medical Research Center of the Ministry of Health of the Russian Federation, Rechkunovskaya str.15, 630055, Novosibirsk, Russian Federation
| | - Denis Losik
- E. Meshalkin National Medical Research Center of the Ministry of Health of the Russian Federation, Rechkunovskaya str.15, 630055, Novosibirsk, Russian Federation
| | - Jonathan S Steinberg
- Clinical Cardiovascular Research Center, School of Medicine & Dentistry, University of Rochester, Rochester, NY, USA
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13
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Ponomarev D. Asymptotic solution to convolution integral equations on large and small intervals. Proc Math Phys Eng Sci 2021. [DOI: 10.1098/rspa.2021.0025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
We consider convolution integral equations on a finite interval with a real-valued kernel of even parity, a problem equivalent to finding a Wiener–Hopf factorization of a notoriously difficult class of 2 × 2 matrices. The kernel function is assumed to be sufficiently smooth and decaying for large values of the argument. Without loss of generality, we focus on a homogeneous equation and we propose methods to construct explicit asymptotic solutions when the interval size is large and small. The large interval method is based on a reduction of the original equation to an integro-differential equation on a half-line that can be asymptotically solved in a closed form. This provides an alternative to other asymptotic techniques that rely on fast (typically exponential) decay of the kernel function at infinity, which is not assumed here. We also consider the problem on a small interval and show that finding its asymptotic solution can be reduced to solving an ODE. In particular, approximate solutions could be constructed in terms of readily available special functions (prolate spheroidal harmonics). Numerical illustrations of the obtained results are provided and further extensions of both methods are discussed.
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Affiliation(s)
- Dmitry Ponomarev
- TU Wien, Wiedner Hauptstrasse, 8, 1040 Wien, Austria
- St. Petersburg Department of Steklov Mathematical Institute RAS, Fontanka, 27, 191023 St. Petersburg, Russia
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14
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Ponomarev D, Kornilov I, Lomivorotov V. Intraoperative Dexamethasone During Pediatric Cardiac Surgery-Reply. JAMA 2020; 324:1790-1791. [PMID: 33141206 DOI: 10.1001/jama.2020.16892] [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] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Affiliation(s)
- Dmitry Ponomarev
- E. Meshalkin National Medical Research Center, Novosibirsk, Russian Federation
| | - Igor Kornilov
- E. Meshalkin National Medical Research Center, Novosibirsk, Russian Federation
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15
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Romanov A, Chernyavskiy A, Lomivorotov V, Ponomarev D, Murtazin V, Orlov K, Kliver E, Shabanov V, Losik D, Mikheenko I, Ponomarenko A, Steinberg J. Temporary spinal cord stimulation to prevent postoperative atrial fibrillation after coronary surgery. First results of the feasibility study. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.0622] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Background
Atrial fibrillation (AF) is the most common arrhythmia after cardiac surgery with typical appearance at early days after operation and leads to increase morbidity and mortality in the short and long term follow up. Spinal cord stimulation (SCS) was proven to be effective in chronic pain and intractable angina pectoris treatment. Recently, animal studies demonstrated that spinal cord stimulation could suppress AF and reduce AF burden.
Aim
To test safety and efficacy of the temporary SCS in early postoperative period in patients undergoing coronary artery bypass grafting
Methods
Fifteen patients (10 men, mean age 61±7.5 years) with indications for coronary artery bypass grafting (CABG) and history of paroxysmal AF underwent percutaneous lead placement for temporary SCS. Under local anesthesia and fluoroscopic guidance, the leads were placed at C7-Th4 level according to patient's sense of paresthesia and connected with spinal cord stimulator externally fixed on patient's chest. Temporary SCS was performed 3 days before CABG and turned off during surgery. At the end of CABG, the SCS was turned on in the intensive care unit and continued for 7 days. After that the temporary leads were removed. The primary safety objective was to test safety of the temporary SCS in early postoperative period, including 30 days occurrence of MACE (Death, stroke or TIA, myocardial infarction), acute spinal cord and kidney injury. The efficacy endpoint included occurrence of AF or any atrial tachyarrhythmias lasting ≥30 seconds during 30 days after surgery. All patients had continuous external ECG monitoring for 30 days after surgery.
Results
In all (100%) patients temporary leads for SCS were implanted successfully and standard on-pump elective CABG was performed thereafter. There were no any adverse events related to temporary SCS in either patient till the end of follow up. There were no significant differences in CK-MB and creatinine levels as compared with baseline data (p=0.2 and 0.3, respectively). No patients developed AF or atrial tachyarrhythmias during follow up according 30-days ECG monitoring.
Conclusions
The first results of the temporary spinal cord stimulation to prevent AF after coronary surgery demonstrated safety and efficacy of this therapy. The parallel group randomizes study is under way (NCT 03539354)
Funding Acknowledgement
Type of funding source: None
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Affiliation(s)
- A Romanov
- E. Meshalkin National Medical Research Center of the Ministry of Health, Novosibirsk, Russian Federation
| | - A Chernyavskiy
- E. Meshalkin National Medical Research Center of the Ministry of Health, Novosibirsk, Russian Federation
| | - V Lomivorotov
- E. Meshalkin National Medical Research Center of the Ministry of Health, Novosibirsk, Russian Federation
| | - D Ponomarev
- E. Meshalkin National Medical Research Center of the Ministry of Health, Novosibirsk, Russian Federation
| | - V Murtazin
- E. Meshalkin National Medical Research Center of the Ministry of Health, Novosibirsk, Russian Federation
| | - K Orlov
- E. Meshalkin National Medical Research Center of the Ministry of Health, Novosibirsk, Russian Federation
| | - E Kliver
- E. Meshalkin National Medical Research Center of the Ministry of Health, Novosibirsk, Russian Federation
| | - V Shabanov
- E. Meshalkin National Medical Research Center of the Ministry of Health, Novosibirsk, Russian Federation
| | - D Losik
- E. Meshalkin National Medical Research Center of the Ministry of Health, Novosibirsk, Russian Federation
| | - I Mikheenko
- E. Meshalkin National Medical Research Center of the Ministry of Health, Novosibirsk, Russian Federation
| | - A Ponomarenko
- E. Meshalkin National Medical Research Center of the Ministry of Health, Novosibirsk, Russian Federation
| | - J.S Steinberg
- Heart Research Follow-up Program, University of Rochester School of Medicine & Dentistry, Rochester, United States of America
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Ushakov D, Afonenko A, Khabibullin R, Ponomarev D, Aleshkin V, Morozov S, Dubinov A. HgCdTe-based quantum cascade lasers operating in the GaAs phonon Reststrahlen band predicted by the balance equation method. Opt Express 2020; 28:25371-25382. [PMID: 32907059 DOI: 10.1364/oe.398552] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
The lack of radiation sources in the frequency range of 7-10 THz is associated with strong absorption of the THz waves on optical phonons within the GaAs Reststrahlen band. To avoid such absorption, we propose to use HgCdTe as an alternative material for THz quantum cascade lasers thanks to a lower phonon energy than in III-V semiconductors. In this work, HgCdTe-based quantum cascade lasers operating in the GaAs phonon Reststrahlen band with a target frequency of 8.3 THz have been theoretically investigated using the balance equation method. The optimized active region designs, which are based on three and two quantum wells, exhibit the peak gain exceeding 100 cm-1 at 150 K. We have analyzed the temperature dependence of the peak gain and predicted the maximum operating temperatures of 170 K and 225 K for three- and two-well designs, respectively. At temperatures exceeding 120 K, the better temperature performance has been obtained for the two-well design, which is associated with a larger spatial overlap of weakly localized lasing wavefunctions, as well as, a higher population inversion. We believe that the findings of this work can open a pathway towards the development of THz quantum cascade lasers featuring a high level of optical gain due to the low electron effective mass in HgCdTe.
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17
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Lomivorotov V, Kornilov I, Boboshko V, Shmyrev V, Bondarenko I, Soynov I, Voytov A, Polyanskih S, Strunin O, Bogachev-Prokophiev A, Landoni G, Nigro Neto C, Oliveira Nicolau G, Saurith Izquierdo L, Nogueira Nascimento V, Wen Z, Renjie H, Haibo Z, Bazylev V, Evdokimov M, Sulejmanov S, Chernogrivov A, Ponomarev D. Effect of Intraoperative Dexamethasone on Major Complications and Mortality Among Infants Undergoing Cardiac Surgery: The DECISION Randomized Clinical Trial. JAMA 2020; 323:2485-2492. [PMID: 32573670 PMCID: PMC7312411 DOI: 10.1001/jama.2020.8133] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
IMPORTANCE Corticosteroids are widely used in pediatric cardiac surgery to blunt systemic inflammatory response and to reduce complications; nevertheless, their clinical efficacy is uncertain. OBJECTIVE To determine whether intraoperative administration of dexamethasone is more effective than placebo for reducing major complications and mortality during pediatric cardiac surgery. DESIGN, SETTING, AND PARTICIPANTS The Intraoperative Dexamethasone in Pediatric Cardiac Surgery was an investigator-initiated, double-blind, multicenter randomized trial that involved 4 centers in China, Brazil, and Russia. A total of 394 infants younger than 12 months, undergoing cardiac surgery with cardiopulmonary bypass were enrolled from December 2015 to October 2018, with follow-up completed in November 2018. INTERVENTIONS The dexamethasone group (n = 194) received 1 mg/kg of dexamethasone; the control group (n = 200) received an equivolume of 0.9% sodium chloride intravenously after anesthesia induction. MAIN OUTCOMES AND MEASURES The primary end point was a composite of death, nonfatal myocardial infarction, need for extracorporeal membrane oxygenation, need for cardiopulmonary resuscitation, acute kidney injury, prolonged mechanical ventilation, or neurological complications within 30 days after surgery. There were 17 secondary end points, including the individual components of the primary end point, and duration of mechanical ventilation, inotropic index, intensive care unit stay, readmission to intensive care unit, and length of hospitalization. RESULTS All of the 394 patients randomized (median age, 6 months; 47.2% boys) completed the trial. The primary end point occurred in 74 patients (38.1%) in the dexamethasone group vs 91 patients (45.5%) in the control group (absolute risk reduction, 7.4%; 95% CI, -0.8% to 15.3%; hazard ratio, 0.82; 95% CI, 0.60 to 1.10; P = .20). Of the 17 prespecified secondary end points, none showed a statistically significant difference between groups. Infections occurred in 4 patients (2.0%) in the dexamethasone group vs 3 patients (1.5%) in the control group. CONCLUSIONS AND RELEVANCE Among infants younger than 12 months undergoing cardiac surgery with cardiopulmonary bypass, intraoperative administration of dexamethasone, compared with placebo, did not significantly reduce major complications and mortality at 30 days. However, the study may have been underpowered to detect a clinically important difference. TRIAL REGISTRATION ClinicalTrials.gov Identifier: NCT02615262.
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Affiliation(s)
- Vladimir Lomivorotov
- E. N. Meshalkin National Medical Research Center, Novosibirsk, Russia
- Novosibirsk State University, Novosibirsk, Russia
| | - Igor Kornilov
- E. N. Meshalkin National Medical Research Center, Novosibirsk, Russia
| | - Vladimir Boboshko
- E. N. Meshalkin National Medical Research Center, Novosibirsk, Russia
| | - Vladimir Shmyrev
- E. N. Meshalkin National Medical Research Center, Novosibirsk, Russia
| | - Ilya Bondarenko
- E. N. Meshalkin National Medical Research Center, Novosibirsk, Russia
| | - Ilya Soynov
- E. N. Meshalkin National Medical Research Center, Novosibirsk, Russia
| | - Alexey Voytov
- E. N. Meshalkin National Medical Research Center, Novosibirsk, Russia
| | | | - Oleg Strunin
- E. N. Meshalkin National Medical Research Center, Novosibirsk, Russia
| | | | - Giovanni Landoni
- IRCCS San Raffaele Scientific Institute, Milan, Italy
- Vita-Salute San Raffaele University, Milan, Italy
| | | | | | | | | | - Zhang Wen
- Shanghai Jiaotong University School of Medicine, Shanghai Children's Medical Center, Shanghai Shi, China
| | - Hu Renjie
- Shanghai Jiaotong University School of Medicine, Shanghai Children's Medical Center, Shanghai Shi, China
| | - Zhang Haibo
- Shanghai Jiaotong University School of Medicine, Shanghai Children's Medical Center, Shanghai Shi, China
| | - Vladlen Bazylev
- Federal Centre of Cardiovascular Surgery, Penza, Russian Federation
| | | | | | | | - Dmitry Ponomarev
- E. N. Meshalkin National Medical Research Center, Novosibirsk, Russia
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18
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Steinberg JS, Shabanov V, Ponomarev D, Losik D, Ivanickiy E, Kropotkin E, Polyakov K, Ptaszynski P, Keweloh B, Yao CJ, Pokushalov EA, Romanov AB. Effect of Renal Denervation and Catheter Ablation vs Catheter Ablation Alone on Atrial Fibrillation Recurrence Among Patients With Paroxysmal Atrial Fibrillation and Hypertension: The ERADICATE-AF Randomized Clinical Trial. JAMA 2020; 323:248-255. [PMID: 31961420 PMCID: PMC6990678 DOI: 10.1001/jama.2019.21187] [Citation(s) in RCA: 113] [Impact Index Per Article: 28.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
IMPORTANCE Renal denervation can reduce cardiac sympathetic activity that may result in an antiarrhythmic effect on atrial fibrillation. OBJECTIVE To determine whether renal denervation when added to pulmonary vein isolation enhances long-term antiarrhythmic efficacy. DESIGN, SETTING, AND PARTICIPANTS The Evaluate Renal Denervation in Addition to Catheter Ablation to Eliminate Atrial Fibrillation (ERADICATE-AF) trial was an investigator-initiated, multicenter, single-blind, randomized clinical trial conducted at 5 referral centers for catheter ablation of atrial fibrillation in the Russian Federation, Poland, and Germany. A total of 302 patients with hypertension despite taking at least 1 antihypertensive medication, paroxysmal atrial fibrillation, and plans for ablation were enrolled from April 2013 to March 2018. Follow-up concluded in March 2019. INTERVENTIONS Patients were randomized to either pulmonary vein isolation alone (n = 148) or pulmonary vein isolation plus renal denervation (n = 154). Complete pulmonary vein isolation to v an end point of elimination of all pulmonary vein potentials; renal denervation using an irrigated-tip ablation catheter delivering radiofrequency energy to discrete sites in a spiral pattern from distal to proximal in both renal arteries. MAIN OUTCOMES AND MEASURES The primary end point was freedom from atrial fibrillation, atrial flutter, or atrial tachycardia at 12 months. Secondary end points included procedural complications within 30 days and blood pressure control at 6 and 12 months. RESULTS Of the 302 randomized patients (median age, 60 years [interquartile range, 55-65 years]; 182 men [60.3%]), 283 (93.7%) completed the trial. All successfully underwent their assigned procedures. Freedom from atrial fibrillation, flutter, or tachycardia at 12 months was observed in 84 of 148 (56.5%) of those undergoing pulmonary vein isolation alone and in 111 of 154 (72.1%) of those undergoing pulmonary vein isolation plus renal denervation (hazard ratio, 0.57; 95% CI, 0.38 to 0.85; P = .006). Of 5 prespecified secondary end points, 4 are reported and 3 differed between groups. Mean systolic blood pressure from baseline to 12 months decreased from 151 mm Hg to 147 mm Hg in the isolation-only group and from 150 mm Hg to 135 mm Hg in the renal denervation group (between-group difference, -13 mm Hg; 95% CI, -15 to -11 mm Hg; P < .001). Procedural complications occurred in 7 patients (4.7%) in the isolation-only group and 7 (4.5%) of the renal denervation group. CONCLUSIONS AND RELEVANCE Among patients with paroxysmal atrial fibrillation and hypertension, renal denervation added to catheter ablation, compared with catheter ablation alone, significantly increased the likelihood of freedom from atrial fibrillation at 12 months. The lack of a formal sham-control renal denervation procedure should be considered in interpreting the results of this trial. TRIAL REGISTRATION ClinicalTrials.gov Identifier: NCT01873352.
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Affiliation(s)
- Jonathan S. Steinberg
- University of Rochester School of Medicine & Dentistry, Heart Research Follow-up Program, Rochester, New York
| | - Vitaliy Shabanov
- E. Meshalkin National Medical Research Center, Novosibirsk, Russian Federation
| | - Dmitry Ponomarev
- E. Meshalkin National Medical Research Center, Novosibirsk, Russian Federation
| | - Denis Losik
- E. Meshalkin National Medical Research Center, Novosibirsk, Russian Federation
| | - Eduard Ivanickiy
- E. Meshalkin National Medical Research Center, Novosibirsk, Russian Federation
| | - Evgeny Kropotkin
- Federal Center of Cardiovascular Surgery, Krasnoyarsk, Russian Federation
| | | | | | | | - Christopher J. Yao
- University of Rochester School of Medicine & Dentistry, Heart Research Follow-up Program, Rochester, New York
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19
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Romanov A, Cherniavskiy A, Novikova N, Edemskiy A, Ponomarev D, Shabanov V, Losik D, Kretov E, Stenin I, Elesin D, Pokushalov E, Steinberg JS. 4282Pulmonary artery denervation in patients with residual pulmonary hypertension after pulmonary endarterectomy: one-year results of the first -in-man, sham-controlled, pilot randomized clinical trial. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz745.0139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Pulmonary endarterectomy (PE) is the method of choice in patients with chronic thromboembolic pulmonary hypertension (CTEPH). Despite the positive effect after surgery combined with medical treatment, 10–40% of patients develop residual CTEPH. Pulmonary artery denervation (PAD) is a novel treatment in PAH with optimistic results but was not tested in patients with residual CTEPH.
Objective
To assess the safety and efficacy of PAD using remote magnetic navigation system in patients with residual CTEPH after PE.
Methods
278 patients with CTEPH after PE were screened. 50 patients (mean age 47.6±14.3, 50% female) with a history of residual CTEPH (a resting pulmonary artery pressure ≥25 mm Hg or pulmonary vascular resistance >400 dyn sec cm–5 despite medical therapy 6 months after PE) were randomized into two groups: PAD (n=25; PAD group) or medical therapy with riociguat (n=25; MED group). In both groups right heart catheterization (RHC)was performed after randomization. In the PAD group, remote magnetic navigation systemwas used to target sympathetic nerve fibers, located near bifurcation and ostia of the main brunches of right and left pulmonary arteries. This study was conducted as double-blind and sham-controlled and the primary endpoint was change in pulmonary vascular resistance (PVR) by RHC at 12 months. Secondary endpoints included 6-minute walk test (6MWT), pulmonary artery pressure, and clinical outcomes. All patients were followed for 12 months after randomization. Unpaired t-test and Fisher's exact test were used for between-group comparisons of continuous and categorical variables, respectively. A p value of less than 0.05 was considered statistically significant.
Results
Two patients (one in each group) developed groin hematoma which resolved without any consequences. At the end of 12 month, the PVR was significantly low in PAD group as compared with MED group (343±149 dyn sec cm–5 vs 444±145 dyn sec cm–5, respectively; mean difference −101, 95% confidence interval: −193 to −10; p=0.032). The mean, systolic and diastolic PA pressure was also reduced significantly in PAD group compared to MED group (25.8±7.3mm Hg vs 33.8±6.4 mm Hg, 46.2±14.1mm Hg vs 54.2±8.1 mm Hg,13.2±5.3mm Hg vs 20.2±4.8mm Hg; p<0.001, p=0.002, p<0.001, respectively). The PAD group demonstrated significant improvement of the 6MWT over MED group (470±84 m vs 399±116 m, respectively, p=0.031). In the PADN group 1 (4%) patient was hospitalized due to heart failure progression compared to 7 (29%) patients in MED group (p=0.049). One patient in PAD group and two patients in MED group died.
Conclusions
Pulmonary artery denervation in patients with residual pulmonary hypertension was safe and effective, and resulted in substantial reduction of pulmonaryvascular resistance and pulmonary artery pressure during 12 months follow up, accompanied by improved 6-minute walk test and reduced need for hospitalization. Clinical Trials Registration: NCT02745106
Acknowledgement/Funding
Grant from Biosense Webster
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Affiliation(s)
- A Romanov
- E. Meshalkin National Medical Research Center, Arrhythmia Department and Electrophysiology Laboratory, Novosibirsk, Russian Federation
| | - A Cherniavskiy
- E. Meshalkin National Medical Research Center, Novosibirsk, Russian Federation
| | - N Novikova
- E. Meshalkin National Medical Research Center, Novosibirsk, Russian Federation
| | - A Edemskiy
- E. Meshalkin National Medical Research Center, Novosibirsk, Russian Federation
| | - D Ponomarev
- E. Meshalkin National Medical Research Center, Novosibirsk, Russian Federation
| | - V Shabanov
- E. Meshalkin National Medical Research Center, Arrhythmia Department and Electrophysiology Laboratory, Novosibirsk, Russian Federation
| | - D Losik
- E. Meshalkin National Medical Research Center, Arrhythmia Department and Electrophysiology Laboratory, Novosibirsk, Russian Federation
| | - E Kretov
- E. Meshalkin National Medical Research Center, Novosibirsk, Russian Federation
| | - I Stenin
- E. Meshalkin National Medical Research Center, Arrhythmia Department and Electrophysiology Laboratory, Novosibirsk, Russian Federation
| | - D Elesin
- E. Meshalkin National Medical Research Center, Arrhythmia Department and Electrophysiology Laboratory, Novosibirsk, Russian Federation
| | - E Pokushalov
- E. Meshalkin National Medical Research Center, Arrhythmia Department and Electrophysiology Laboratory, Novosibirsk, Russian Federation
| | - J S Steinberg
- University of Rochester School of Medicine & Dentistry, NY, Rochester, United States of America
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Nagaraj B, Ponomarev D. Spinor-Helicity Formalism for Massless Fields in AdS_{4}. Phys Rev Lett 2019; 122:101602. [PMID: 30932631 DOI: 10.1103/physrevlett.122.101602] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2018] [Revised: 01/07/2019] [Indexed: 06/09/2023]
Abstract
In this Letter, we suggest a natural spinor-helicity formalism for massless fields in four-dimensional anti-de Sitter space (AdS_{4}). It is based on the standard realization of the AdS_{4} isometry algebra so(3,2) in terms of differential operators acting on sl(2,C) spinor variables. We start by deriving the anti-de Sitter counterpart of plane waves in flat space and then use them to evaluate simple scattering amplitudes. Finally, based on symmetry arguments, we classify all three-point amplitudes involving massless spinning fields. As in flat space, we find that the spinor-helicity formalism allows us to construct additional consistent interactions as compared to approaches employing Lorentz tensors.
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Affiliation(s)
- Balakrishnan Nagaraj
- George P. and Cynthia W. Mitchell Institute for Fundamental Physics and Astronomy, Texas A&M University, College Station, Texas 77843-4242, USA
| | - Dmitry Ponomarev
- George P. and Cynthia W. Mitchell Institute for Fundamental Physics and Astronomy, Texas A&M University, College Station, Texas 77843-4242, USA
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Romanov A, Pokushalov E, Ponomarev D, Bayramova S, Shabanov V, Losik D, Stenin I, Elesin D, Mikheenko I, Strelnikov A, Sergeevichev D, Kozlov B, Po SS, Steinberg JS. Long-term suppression of atrial fibrillation by botulinum toxin injection into epicardial fat pads in patients undergoing cardiac surgery: Three-year follow-up of a randomized study. Heart Rhythm 2018; 16:172-177. [PMID: 30414841 DOI: 10.1016/j.hrthm.2018.08.019] [Citation(s) in RCA: 62] [Impact Index Per Article: 10.3] [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: 05/08/2018] [Indexed: 11/30/2022]
Abstract
BACKGROUND Botulinum toxin (BTX) injections into epicardial fat pads in patients undergoing coronary artery bypass grafting (CABG) has resulted in suppression of atrial fibrillation (AF) during the early postoperative period through 1-year of follow-up in a pilot program. OBJECTIVE The purpose of this study was to report 3-year AF patterns by the use of implantable cardiac monitors (ICMs). METHODS Sixty patients with a history of paroxysmal AF and indications for CABG were randomized 1:1 to either BTX or placebo injections into 4 posterior epicardial fat pads. All patients received an ICM with regular follow-up for 3 years after surgery. The primary end point of the extended follow-up period was incidence of any atrial tachyarrhythmia after 30 days of procedure until 36 months on no antiarrhythmic drugs. The secondary end points included clinical events and AF burden. RESULTS At the end of 36 months, the incidence of any atrial tachyarrhythmia was 23.3% in the BTX group vs 50% in the placebo group (hazard ratio 0.36; 95% confidence interval 0.14-0.88; P = .02). AF burden at 12, 24, and 36 months was significantly lower in the BTX group than in the placebo group: 0.22% vs 1.88% (P = .003), 1.6% vs 9.5% (P < .001), and 1.3% vs 6.9% (P = .007), respectively. In the BTX group, 2 patients (7%) were hospitalized during follow-up compared with 10 (33%) in the placebo group (P = .02). CONCLUSION Injection of BTX into epicardial fat pads in patients undergoing CABG resulted in a sustained and substantial reduction in atrial tachyarrhythmia incidence and burden during 3-year follow-up, accompanied by reduction in hospitalizations.
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Affiliation(s)
- Alexander Romanov
- E. Meshalkin National Medical Research Center of the Ministry of Health of the Russian Federation, Novosibirsk, Russian Federation
| | - Evgeny Pokushalov
- E. Meshalkin National Medical Research Center of the Ministry of Health of the Russian Federation, Novosibirsk, Russian Federation
| | - Dmitry Ponomarev
- E. Meshalkin National Medical Research Center of the Ministry of Health of the Russian Federation, Novosibirsk, Russian Federation
| | - Sevda Bayramova
- E. Meshalkin National Medical Research Center of the Ministry of Health of the Russian Federation, Novosibirsk, Russian Federation
| | - Vitaliy Shabanov
- E. Meshalkin National Medical Research Center of the Ministry of Health of the Russian Federation, Novosibirsk, Russian Federation
| | - Denis Losik
- E. Meshalkin National Medical Research Center of the Ministry of Health of the Russian Federation, Novosibirsk, Russian Federation
| | - Ilya Stenin
- E. Meshalkin National Medical Research Center of the Ministry of Health of the Russian Federation, Novosibirsk, Russian Federation
| | - Dmitry Elesin
- E. Meshalkin National Medical Research Center of the Ministry of Health of the Russian Federation, Novosibirsk, Russian Federation
| | - Igor Mikheenko
- E. Meshalkin National Medical Research Center of the Ministry of Health of the Russian Federation, Novosibirsk, Russian Federation
| | - Artem Strelnikov
- E. Meshalkin National Medical Research Center of the Ministry of Health of the Russian Federation, Novosibirsk, Russian Federation
| | - David Sergeevichev
- E. Meshalkin National Medical Research Center of the Ministry of Health of the Russian Federation, Novosibirsk, Russian Federation
| | - Boris Kozlov
- Institute of Cardiology, Siberian Division of Russian Academy of Medical Sciences, Tomsk, Russian Federation
| | - Sunny S Po
- Heart Rhythm Institute, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma
| | - Jonathan S Steinberg
- Heart Research Follow-up Program, University of Rochester School of Medicine & Dentistry, Rochester, New York; SMG Arrhythmia Center, Summit Medical Group, Short Hills, New Jersey.
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Ponomarev D, Kamenskaya O, Klinkova A, Loginova I, Vedernikov P, Kornilov I, Shmyrev V, Lomivorotov V, Chernavskiy A, Karaskov A. Chronic Lung Disease and Mortality after Cardiac Surgery: A Prospective Cohort Study. J Cardiothorac Vasc Anesth 2018; 32:2241-2245. [DOI: 10.1053/j.jvca.2017.12.016] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/11/2017] [Indexed: 11/11/2022]
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Ponomarev D, Boboshko V, Shmyrev V, Kornilov I, Bondarenko I, Soynov I, Voytov A, Polyanskih S, Strunin O, Bogachev A, Landoni G, Neto CN, Nicolau GO, Wen Z, Evdokimov M, Sulejmanov S, Chernogrivov A, Karaskov A, Lomivorotov V. Dexamethasone in pEdiatric Cardiac Surgery (DECiSion): Rationale and design of a randomized controlled trial. Contemp Clin Trials 2018; 72:16-19. [PMID: 30016720 DOI: 10.1016/j.cct.2018.07.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2018] [Revised: 06/26/2018] [Accepted: 07/12/2018] [Indexed: 11/28/2022]
Affiliation(s)
- Dmitry Ponomarev
- Department of Anesthesia and Intensive Care, E. Meshalkin National Medical Research Center, 15 Rechkunovskaya Street, Novosibirsk 630055, Russian Federation.
| | - Vladimir Boboshko
- Department of Anesthesia and Intensive Care, E. Meshalkin National Medical Research Center, 15 Rechkunovskaya Street, Novosibirsk 630055, Russian Federation
| | - Vladimir Shmyrev
- Department of Anesthesia and Intensive Care, E. Meshalkin National Medical Research Center, 15 Rechkunovskaya Street, Novosibirsk 630055, Russian Federation
| | - Igor Kornilov
- Department of Anesthesia and Intensive Care, E. Meshalkin National Medical Research Center, 15 Rechkunovskaya Street, Novosibirsk 630055, Russian Federation
| | - Ilya Bondarenko
- Department of Anesthesia and Intensive Care, E. Meshalkin National Medical Research Center, 15 Rechkunovskaya Street, Novosibirsk 630055, Russian Federation
| | - Ilya Soynov
- Department of Cardiac Surgery, E. Meshalkin National Medical Research Centre, 15 Rechkunovskaya Street, Novosibirsk 630055, Russian Federation
| | - Alexey Voytov
- Department of Cardiac Surgery, E. Meshalkin National Medical Research Centre, 15 Rechkunovskaya Street, Novosibirsk 630055, Russian Federation
| | - Stanislav Polyanskih
- Department of Anesthesia and Intensive Care, E. Meshalkin National Medical Research Center, 15 Rechkunovskaya Street, Novosibirsk 630055, Russian Federation
| | - Oleg Strunin
- Department of Anesthesia and Intensive Care, E. Meshalkin National Medical Research Center, 15 Rechkunovskaya Street, Novosibirsk 630055, Russian Federation
| | - Alexander Bogachev
- Department of Cardiac Surgery, E. Meshalkin National Medical Research Centre, 15 Rechkunovskaya Street, Novosibirsk 630055, Russian Federation
| | - Giovanni Landoni
- IRCCS San Raffaele Scientific Institute, via Olgettina 60, Milan 20132, Italy; Vita-Salute San Raffaele University, Via Olgettina 58, Milan 20132, Italy
| | - Caetano Nigro Neto
- Dante Pazzanese Institute of Cardiology, Doutor Dante Pazzanese avenue, 500 - 6 andar/COREME, 04012180 Sao Paulo, Brazil
| | - Gretel Oliveira Nicolau
- Dante Pazzanese Institute of Cardiology, Doutor Dante Pazzanese avenue, 500 - 6 andar/COREME, 04012180 Sao Paulo, Brazil
| | - Zhang Wen
- Shanghai Children's Medical Center (SCMC) Affiliated to Shanghai Jiaotong University School of Medicine, 101 Beiyuan Rd, TangQiao, Pudong Xinqu, Shanghai Shi 200000, China
| | - Mikhail Evdokimov
- Department of Anesthesia and Intensive Care, Federal Centre of Cardiovascular Surgery, 6 Stasova Street, Penza 440071, Russian Federation
| | - Shahrijar Sulejmanov
- Department of Anesthesia and Intensive Care, Federal Centre of Cardiovascular Surgery, 6 Stasova Street, Penza 440071, Russian Federation
| | - Aleksei Chernogrivov
- Department of Cardiac Surgery, Federal Centre of Cardiovascular Surgery, 6 Stasova Street, Penza 440071, Russian Federation
| | - Alexander Karaskov
- Department of Cardiac Surgery, E. Meshalkin National Medical Research Centre, 15 Rechkunovskaya Street, Novosibirsk 630055, Russian Federation
| | - Vladimir Lomivorotov
- Department of Anesthesia and Intensive Care, E. Meshalkin National Medical Research Center, 15 Rechkunovskaya Street, Novosibirsk 630055, Russian Federation
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Romanov A, Pokushalov E, Ponomarev D, Strelnikov A, Shabanov V, Losik D, Karaskov A, Steinberg JS. Pulmonary vein isolation with concomitant renal artery denervation is associated with reduction in both arterial blood pressure and atrial fibrillation burden: Data from implantable cardiac monitor. Cardiovasc Ther 2018; 35. [PMID: 28423234 DOI: 10.1111/1755-5922.12264] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [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: 07/26/2016] [Revised: 03/23/2016] [Accepted: 04/13/2016] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND Renal artery denervation (RDN) has provided incremental atrial fibrillation (AF) suppression after pulmonary vein isolation (PVI) in patients with AF in the setting of drug-resistant hypertension. OBJECTIVE To assess the relationship between changes of mean blood pressure (BP) and AF recurrences/AF burden after PVI combined with RDN. METHODS All patients from two randomized studies with symptomatic paroxysmal AF and/or persistent AF and resistant hypertension who underwent PVI-only (n=37) or PVI with RDN (n=39), and implantable cardiac monitor (ICM) implantation were eligible for this study. Mixed-effects linear models were used to investigate the effect of RDN on mean BP and mean AF burden and associations between the two during the 12-month follow-up. RESULTS Concomitant RDN was associated with a significant reduction in both mean AF burden (2.43 [95% CI: 1.76-3.09] % vs 6.95 [95% CI: 5.44-8.45] %) and mean BP (104 [95% CI: 103-106] mm Hg vs 112 [95% CI: 110-113] mm Hg). Decrease in mean BP was positively correlated with decline in mean AF burden: reduction of 5-10 mm Hg was accompanied by a 7.0% decreased mean AF burden, with greater reduction (up to 20 mm Hg) associated with on average 17.7% lower mean AF burden. CONCLUSIONS Renal artery denervation when added to PVI decreases AF recurrences, AF burden, and mean BP. Reduction in mean BP is associated with both AF burden and recurrences. Further large-scale studies are needed to define the mechanistic pathway(s) of the antiarrhythmic effects of RDN.
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Affiliation(s)
- Alexander Romanov
- State Research Institute of Circulation Pathology, Novosibirsk, Russia
| | - Evgeny Pokushalov
- State Research Institute of Circulation Pathology, Novosibirsk, Russia
| | - Dmitry Ponomarev
- State Research Institute of Circulation Pathology, Novosibirsk, Russia
| | - Artem Strelnikov
- State Research Institute of Circulation Pathology, Novosibirsk, Russia
| | - Vitaliy Shabanov
- State Research Institute of Circulation Pathology, Novosibirsk, Russia
| | - Denis Losik
- State Research Institute of Circulation Pathology, Novosibirsk, Russia
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Ponomarev D, Kamenskaya O, Klinkova A, Loginova I, Vedernikov P, Kornilov I, Shmyrev V, Lomivorotov V, Chernavskiy A, Karaskov A. Response: "Outcomes of Patients With COPD Undergoing Cardiac Surgery: Don't Hold Your Breath". J Cardiothorac Vasc Anesth 2018; 32:e1-e2. [PMID: 29673762 DOI: 10.1053/j.jvca.2018.03.021] [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] [Received: 03/12/2018] [Indexed: 11/11/2022]
Affiliation(s)
- Dmitry Ponomarev
- Department of Anesthesia and Intensive Care, Meshalkin National Medical Research Centre, Novosibirsk, Russia
| | - Oksana Kamenskaya
- Department of Physiology, Meshalkin National Medical Research Centre, Novosibirsk, Russia
| | - Asya Klinkova
- Department of Physiology, Meshalkin National Medical Research Centre, Novosibirsk, Russia
| | - Irina Loginova
- Department of Physiology, Meshalkin National Medical Research Centre, Novosibirsk, Russia
| | - Pavel Vedernikov
- Department of Anesthesia and Intensive Care, Meshalkin National Medical Research Centre, Novosibirsk, Russia
| | - Igor Kornilov
- Department of Anesthesia and Intensive Care, Meshalkin National Medical Research Centre, Novosibirsk, Russia
| | - Vladimir Shmyrev
- Department of Anesthesia and Intensive Care, Meshalkin National Medical Research Centre, Novosibirsk, Russia
| | - Vladimir Lomivorotov
- Department of Anesthesia and Intensive Care, Meshalkin National Medical Research Centre, Novosibirsk, Russia
| | - Aleksander Chernavskiy
- Department of Cardiac Surgery, Meshalkin National Medical Research Centre, Novosibirsk, Russia
| | - Aleksander Karaskov
- Department of Cardiac Surgery, Meshalkin National Medical Research Centre, Novosibirsk, Russia
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Romanov A, Pokushalov E, Bayramova S, Ponomarev D, Shabanov V, Losik D, Stenin I, Elesin D, Mikheenko I, Steinberg JS. Prophylactic pulmonary vein isolation during isthmus ablation for atrial flutter: Three-year outcomes of the PREVENT AF I study. J Cardiovasc Electrophysiol 2018; 29:872-878. [PMID: 29570894 DOI: 10.1111/jce.13485] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [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: 12/25/2017] [Revised: 02/28/2018] [Accepted: 03/01/2018] [Indexed: 01/15/2023]
Abstract
INTRODUCTION The PREVENT AF I study demonstrated that prophylactic pulmonary vein isolation (PVI) in patients with pure typical atrial flutter (AFL) resulted in substantial reduction of new-onset atrial fibrillation (AF) during 1-year follow-up as assessed by continuous implantable cardiac monitor (ICM). The objective of this study was to assess 3-year outcomes. METHODS AND RESULTS Fifty patients with documented AFL were randomized to either cavotricuspid isthmus (CTI) ablation alone (n = 25) or CTI with concomitant PVI (n = 25). The primary endpoint of the study was the occurrence of any atrial tachyarrhythmia with the monthly burden exceeding 0.5% on the ICM. At the end of 3 years, freedom from any atrial tachyarrhythmia was 48% (95% confidence interval [CI]: 32-72%) in the CTI plus PVI group as compared to 20% (95% CI: 9-44%) in the CTI-only group (P = 0.01). Freedom from redo procedures was also higher: 92% (95% CI: 82-100%) versus 68% (95% CI: 52-89%), respectively (P = 0.027). The 3-year AF burden favored the combined ablation group: 6.2% versus 16.8% (P = 0.03). In the CTI-only group, 12 (48%) patients were hospitalized compared to 4 (16%) in the PVI + CTI group (P = 0.03). Two patients in the CTI-only group developed stroke with no serious adverse events in the PVI + CTI group. CONCLUSION Prophylactic PVI in patients with only typical AFL resulted in a significant reduction of new-onset AF and burden during long-term follow-up as assessed by ICM, with consequent reduction in hospitalizations and need to perform repeat ablation for AF.
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Affiliation(s)
- Alexander Romanov
- E. Meshalkin National Medical Research Center of the Ministry of Health of the Russian Federation, Novosibirsk, Russian Federation
| | - Evgeny Pokushalov
- E. Meshalkin National Medical Research Center of the Ministry of Health of the Russian Federation, Novosibirsk, Russian Federation
| | - Sevda Bayramova
- E. Meshalkin National Medical Research Center of the Ministry of Health of the Russian Federation, Novosibirsk, Russian Federation
| | - Dmitry Ponomarev
- E. Meshalkin National Medical Research Center of the Ministry of Health of the Russian Federation, Novosibirsk, Russian Federation
| | - Vitaliy Shabanov
- E. Meshalkin National Medical Research Center of the Ministry of Health of the Russian Federation, Novosibirsk, Russian Federation
| | - Denis Losik
- E. Meshalkin National Medical Research Center of the Ministry of Health of the Russian Federation, Novosibirsk, Russian Federation
| | - Ilya Stenin
- E. Meshalkin National Medical Research Center of the Ministry of Health of the Russian Federation, Novosibirsk, Russian Federation
| | - Dmitry Elesin
- E. Meshalkin National Medical Research Center of the Ministry of Health of the Russian Federation, Novosibirsk, Russian Federation
| | - Igor Mikheenko
- E. Meshalkin National Medical Research Center of the Ministry of Health of the Russian Federation, Novosibirsk, Russian Federation
| | - Jonathan S Steinberg
- Heart Research Follow-up Program, University of Rochester School of Medicine & Dentistry, Rochester, NY, USA.,The SMG Arrhythmia Center, Summit Medical Group, Short Hills, NJ, USA
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Romanov A, Pokushalov E, Bayramova S, Shabanov V, Losik D, Ponomarev D, Stenin I, Elesin D, Mikheenko I, Steinberg J. 57Prophylactic pulmonary vein isolation during isthmus ablation for atrial flutter: three-year outcomes of the prevent af I study. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx501.57] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Lomivorotov VV, Perovskiy P, Fominskiy E, Ponomarev D, Shmyrev V, Kornilov I, Lomivorotov VN, Karaskov A. Cerebral oximetry in reducing postoperative morbidity in high-risk cardiac surgery. J Cardiothorac Vasc Anesth 2017. [DOI: 10.1053/j.jvca.2017.02.124] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Ponomarev D, Kamenskaya O, Klinkova A, Loginova I, Shmyrev V, Lomivorotov V. Prevalence and impact of abnormal respiratory patterns in cardiac surgery: a prospective cohort study. J Cardiothorac Vasc Anesth 2017. [DOI: 10.1053/j.jvca.2017.02.070] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Shmyrev V, Kornilov I, Kamenskaya O, Ponomarev D, Lomivorotov VV. Deep hypothermic circulatory arrest or cerebral perfusion during aortic surgery: a randomised study. J Cardiothorac Vasc Anesth 2017. [DOI: 10.1053/j.jvca.2017.02.075] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Romanov A, Martinek M, Pürerfellner H, Chen S, De Melis M, Grazhdankin I, Ponomarev D, Losik D, Strelnikov A, Shabanov V, Karaskov A, Pokushalov E. Incidence of atrial fibrillation detected by continuous rhythm monitoring after acute myocardial infarction in patients with preserved left ventricular ejection fraction: results of the ARREST study. Europace 2017; 20:263-270. [DOI: 10.1093/europace/euw344] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2016] [Accepted: 10/10/2016] [Indexed: 11/13/2022] Open
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Ponomarev D, Kamenskaya O, Klinkova A, Loginova I, Lomivorotov V, Kornilov I, Shmyrev V, Chernavskiy A, Landoni G, Karaskov A. Prevalence and Implications of Abnormal Respiratory Patterns in Cardiac Surgery: A Prospective Cohort Study. J Cardiothorac Vasc Anesth 2016; 31:2010-2016. [PMID: 28242146 DOI: 10.1053/j.jvca.2016.12.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/20/2016] [Indexed: 11/11/2022]
Abstract
OBJECTIVE To investigate the prevalence and impact of abnormal respiratory patterns in cardiac surgery patients. DESIGN Prospective cohort study. SETTING Tertiary hospital. PARTICIPANTS Patients scheduled for elective coronary artery bypass graft surgery. INTERVENTIONS None. MEASUREMENTS AND MAIN RESULTS Pulmonary function tests were performed in 454 patients before surgery. Abnormal respiratory patterns were defined as follows: obstructive (forced expiratory volume in 1 s [FEV1]/forced vital capacity [FVC]<0.70), restrictive (FEV1/FVC≥0.70 and FVC<80% of predicted), and mixed (FEV1/FVC<0.70 and both FEV1 and FVC<80% of predicted). Of the 31 patients with a history of chronic obstructive pulmonary disease, no abnormal respiratory pattern was confirmed in 5. Of the 423 patients without a history of lung disease, the authors newly identified 57 obstructive, 46 restrictive, and 4 mixed patterns. Therefore, lung disease was reclassified in 24.7% of cases. Independent predictors of obstructive pattern were age, male sex, history of smoking, and chronic obstructive pulmonary disease. Obstructive lung disease was associated with 16 hours or longer ventilation. A reduced FEV1 was associated with a likelihood of atrial fibrillation (1-L decrement, odds ratio: 1.38, 95% confidence interval: 1.01-to-1.90, p = 0.04) and hospitalization time (regression coefficient: 1.23, 95% confidence interval: 0.54-to-1.91, p<0.001). CONCLUSIONS Abnormal respiratory patterns are common and often underdiagnosed in the cardiac surgery setting. Pulmonary function tests help reveal patients at risk of complications and may provide an opportunity for intervention.
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Affiliation(s)
- Dmitry Ponomarev
- Department of Anesthesia and Intensive Care, Academician EN Meshalkin Novosibirsk State Budget Research Institute of Circulation Pathology, Novosibirsk, Russia.
| | - Oksana Kamenskaya
- Department of Physiology, Academician EN Meshalkin Novosibirsk State Budget Research Institute of Circulation Pathology, Novosibirsk, Russia
| | - Asya Klinkova
- Department of Physiology, Academician EN Meshalkin Novosibirsk State Budget Research Institute of Circulation Pathology, Novosibirsk, Russia
| | - Irina Loginova
- Department of Physiology, Academician EN Meshalkin Novosibirsk State Budget Research Institute of Circulation Pathology, Novosibirsk, Russia
| | - Vladimir Lomivorotov
- Department of Anesthesia and Intensive Care, Academician EN Meshalkin Novosibirsk State Budget Research Institute of Circulation Pathology, Novosibirsk, Russia
| | - Igor Kornilov
- Department of Anesthesia and Intensive Care, Academician EN Meshalkin Novosibirsk State Budget Research Institute of Circulation Pathology, Novosibirsk, Russia
| | - Vladimir Shmyrev
- Department of Anesthesia and Intensive Care, Academician EN Meshalkin Novosibirsk State Budget Research Institute of Circulation Pathology, Novosibirsk, Russia
| | - Aleksander Chernavskiy
- Department of Cardiac Surgery, Academician EN Meshalkin Novosibirsk State Budget Research Institute of Circulation Pathology, Novosibirsk, Russia
| | - Giovanni Landoni
- Department of Anesthesia and Intensive Care, IRCCS San Raffaele Scientific Institute, Milan, Italy; Vita-Salute San Raffaele University, Milan, Italy
| | - Aleksander Karaskov
- Department of Cardiac Surgery, Academician EN Meshalkin Novosibirsk State Budget Research Institute of Circulation Pathology, Novosibirsk, Russia
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Romanov A, Pokushalov E, Elesin D, Bogachev-Prokophiev A, Ponomarev D, Losik D, Bayramova S, Strelnikov A, Shabanov V, Pidanov O, Kropotkin E, Ivanickii E, Karaskov A, Steinberg JS. Effect of left atrial appendage excision on procedure outcome in patients with persistent atrial fibrillation undergoing surgical ablation. Heart Rhythm 2016; 13:1803-9. [DOI: 10.1016/j.hrthm.2016.05.012] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/12/2016] [Indexed: 12/31/2022]
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Shmyrev V, Kornilov I, Ponomarev D, Lomivorotov V, Sinelnikov Y. Outcomes after aortic arch reconstruction for infants: deep hypothermic circulatory arrest versus moderate hypothermia with selective antegrade cerebral perfusion. J Cardiothorac Vasc Anesth 2016. [DOI: 10.1053/j.jvca.2016.03.087] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Ponomarev D, Lomivorotov V, Kamenskaya O, Klinkova A. Forced expiratory volume in one second predicts hospital stay after cardiac surgery: interim results of a prospective cohort study. J Cardiothorac Vasc Anesth 2016. [DOI: 10.1053/j.jvca.2016.03.089] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Palkopoulou E, Baca M, Abramson NI, Sablin M, Socha P, Nadachowski A, Prost S, Germonpré M, Kosintsev P, Smirnov NG, Vartanyan S, Ponomarev D, Nyström J, Nikolskiy P, Jass CN, Litvinov YN, Kalthoff DC, Grigoriev S, Fadeeva T, Douka A, Higham TFG, Ersmark E, Pitulko V, Pavlova E, Stewart JR, Węgleński P, Stankovic A, Dalén L. Synchronous genetic turnovers across Western Eurasia in Late Pleistocene collared lemmings. Glob Chang Biol 2016; 22:1710-1721. [PMID: 26919067 DOI: 10.1111/gcb.13214] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2015] [Revised: 10/08/2015] [Accepted: 12/07/2015] [Indexed: 06/05/2023]
Abstract
Recent palaeogenetic studies indicate a highly dynamic history in collared lemmings (Dicrostonyx spp.), with several demographical changes linked to climatic fluctuations that took place during the last glaciation. At the western range margin of D. torquatus, these changes were characterized by a series of local extinctions and recolonizations. However, it is unclear whether this pattern represents a local phenomenon, possibly driven by ecological edge effects, or a global phenomenon that took place across large geographical scales. To address this, we explored the palaeogenetic history of the collared lemming using a next-generation sequencing approach for pooled mitochondrial DNA amplicons. Sequences were obtained from over 300 fossil remains sampled across Eurasia and two sites in North America. We identified five mitochondrial lineages of D. torquatus that succeeded each other through time across Europe and western Russia, indicating a history of repeated population extinctions and recolonizations, most likely from eastern Russia, during the last 50 000 years. The observation of repeated extinctions across such a vast geographical range indicates large-scale changes in the steppe-tundra environment in western Eurasia during the last glaciation. All Holocene samples, from across the species' entire range, belonged to only one of the five mitochondrial lineages. Thus, extant D. torquatus populations only harbour a small fraction of the total genetic diversity that existed across different stages of the Late Pleistocene. In North American samples, haplotypes belonging to both D. groenlandicus and D. richardsoni were recovered from a Late Pleistocene site in south-western Canada. This suggests that D. groenlandicus had a more southern and D. richardsoni a more northern glacial distribution than previously thought. This study provides significant insights into the population dynamics of a small mammal at a large geographical scale and reveals a rather complex demographical history, which could have had bottom-up effects in the Late Pleistocene steppe-tundra ecosystem.
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Affiliation(s)
- Eleftheria Palkopoulou
- Department of Bioinformatics and Genetics, Swedish Museum of Natural History, 10405 Stockholm, Sweden
- Department of Zoology, Stockholm University, 10405 Stockholm, Sweden
| | - Mateusz Baca
- Center for Pre-Columbian Studies, University of Warsaw, Krakowskie Przedmieście 26/28, 00-927 Warsaw, Poland
| | - Natalia I Abramson
- Zoological Institute, Russian Academy of Sciences, St. Petersburg 199034, Russia
| | - Mikhail Sablin
- Zoological Institute, Russian Academy of Sciences, St. Petersburg 199034, Russia
| | - Paweł Socha
- Department of Palaeozoology, Institute of Environmental Biology, University of Wrocław, Sienkiewicza Str. 21, 50-335 Wrocław, Poland
| | - Adam Nadachowski
- Institute of Systematics and Evolution of Animals, Polish Academy of Sciences, Sławkowska Str. 17, 31-016 Kraków, Poland
| | - Stefan Prost
- Department of Integrative Biology, University of California, Berkeley, CA 94720-3140, USA
- Department of Anatomy and Structural Biology, Allan Wilson Centre for Molecular Ecology and Evolution, University of Otago, Dunedin 9054, New Zealand
| | - Mietje Germonpré
- Operational Direction "Earth and History of Life", Royal Belgian Institute of Natural Sciences, 1000 Brussels, Belgium
| | - Pavel Kosintsev
- Institute of Plant and Animal Ecology, Russian Academy of Sciences, 202 8 Marta Street, 620144 Ekaterinburg, Russia
| | - Nickolay G Smirnov
- Institute of Plant and Animal Ecology, Russian Academy of Sciences, 202 8 Marta Street, 620144 Ekaterinburg, Russia
| | - Sergey Vartanyan
- Northeast Interdisciplinary Research Institute, Far East Branch, Russian Academy of Sciences, Magadan 685000, Russia
| | - Dmitry Ponomarev
- Laboratory of Paleontology, Institute of Geology of Komi Science Center, Russian Academy of Sciences, 54 Pervomayskaya Street, 167982 Syktyvkar, Russia
| | - Johanna Nyström
- Department of Bioinformatics and Genetics, Swedish Museum of Natural History, 10405 Stockholm, Sweden
| | - Pavel Nikolskiy
- Geological Institute of the Russian Academy of Sciences, Pyzhevsky pereulok 7, Moscow 119017, Russia
| | | | - Yuriy N Litvinov
- Institute of Systematics and Ecology of Animals, Siberian Branch of the Russian Academy of Sciences, Frunze Str. 11, Novosibirsk 630091, Russia
| | - Daniela C Kalthoff
- Department of Zoology, Swedish Museum of Natural History, 10405 Stockholm, Sweden
| | - Semyon Grigoriev
- Mammoth Museum, Institute of Applied Ecology of the North, North-Eastern Federal University, 48 Kulakovskogo St., Yakutsk, 677000 Republic of Sakha, Russia
| | - Tatyana Fadeeva
- Mining Institute Russian Academy of Sciences, 78A Sibirskaya Street, 614007 Perm, Russia
| | - Aikaterini Douka
- Oxford Radiocarbon Accelerator Unit, Research Laboratory for Archaeology and the History of Art, University of Oxford, Oxford OX1 3QY, UK
| | - Thomas F G Higham
- Oxford Radiocarbon Accelerator Unit, Research Laboratory for Archaeology and the History of Art, University of Oxford, Oxford OX1 3QY, UK
| | - Erik Ersmark
- Department of Bioinformatics and Genetics, Swedish Museum of Natural History, 10405 Stockholm, Sweden
- Department of Zoology, Stockholm University, 10405 Stockholm, Sweden
| | - Vladimir Pitulko
- Institute for the History of Material Culture, Russian Academy of Sciences, Dvortsovaya nab. 18, 191186 St Petersburg, Russia
| | - Elena Pavlova
- Arctic & Antarctic Research Institute, Bering St. 35, 199397 St Petersburg, Russia
| | - John R Stewart
- Faculty of Science and Technology, Bournemouth University, Dorset BH12 5BB, UK
| | - Piotr Węgleński
- Centre of New Technologies, University of Warsaw, S. Banacha 2c, 02-097 Warsaw, Poland
| | - Anna Stankovic
- Institute of Biochemistry and Biophysics, Polish Academy of Sciences, 02-106 Warsaw, Poland
| | - Love Dalén
- Department of Bioinformatics and Genetics, Swedish Museum of Natural History, 10405 Stockholm, Sweden
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Ponomarev D, Miller C, Govan L, Haig C, Wu O, Langhorne P. Complications following incident stroke resulting in readmissions: an analysis of data from three Scottish health surveys. Int J Stroke 2013; 10:911-7. [PMID: 24206656 DOI: 10.1111/ijs.12191] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2013] [Accepted: 08/05/2013] [Indexed: 11/28/2022]
Abstract
BACKGROUND AND AIMS Stroke is widely recognized as the major contributor to morbidity and mortality in the United Kingdom. We analyzed the data obtained from the three consecutive Scottish Health Surveys and the Scottish Morbidity records, with the aim of identifying risk factors for, and timing of, common poststroke complications. METHODS There were 19434 individuals sampled during three Scottish Health Surveys in 1995, 1998, and 2001. For these individuals their morbidity and mortality outcomes were obtained in 2007. Incident stroke prevalence, risk factors for a range of poststroke complications, and average times until such complications in the sample were established. RESULTS Of the total of 168 incident stroke admissions (0·86% of the survey), 16·1% people died during incident stroke hospitalization. Of the remaining 141 stroke survivors, 75·2% were rehospitalized at least once. The most frequent reason for readmission after stroke was a cardiovascular complication (28·6%), median time until event 1412 days, followed by infection (17·3%, median 1591 days). The risk of cardiovascular readmission was higher in those with 'poor' self-assessed health (odds ratio 7·70; 95% confidence interval 1·64-43·27), smokers (odds ratio 4·24; 95% confidence interval 1·11-21·59), and doubled with every five years increase in age (odds ratio 1·97; 95% confidence interval 1·46-2·65). 'Poor' self-assessed health increased chance of readmission for infection (odds ratio 14·11; 95% confidence interval 2·27-276·56). CONCLUSIONS Cardiovascular events and infections are the most frequent poststroke complications resulting in readmissions. The time period until event provides a possibility to focus monitoring on those people at risk of readmission and introduce preventative measures, thereby reducing readmission-associated costs.
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Affiliation(s)
- Dmitry Ponomarev
- Department of Anesthesiology, Novosibirsk Research Institute of Circulation Pathology, Novosibirsk, Russian Federation
| | - Claire Miller
- School of Mathematics and Statistics, University of Glasgow, Glasgow, UK
| | - Lindsay Govan
- Institute of Health and Wellbeing, University of Glasgow, Glasgow, UK
| | - Caroline Haig
- Robertson Centre for Biostatistics, University of Glasgow, Glasgow, UK
| | - Olivia Wu
- Institute of Health and Wellbeing, University of Glasgow, Glasgow, UK
| | - Peter Langhorne
- Institute of Cardiovascular and Medical Sciences, University of Glasgow, Glasgow, UK
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Efremov S, Lomivorotov V, Shmirev V, Ponomarev D, Deryagin M. PP228-SUN GLUTAMINE AND INSULIN RESISTANCE FOR CARDIAC PATIENTS WITH DIABETES MELLITUS. Clin Nutr 2013. [DOI: 10.1016/s0261-5614(13)60273-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Ponomarev D, Puzachenko A, Isaychev K. Morphotypic variability of masticatory surface pattern of molars in the recent and PleistoceneLemmusandMyopus(Rodentia, Cricetidae) of Europe and Western Siberia. ACTA ZOOL-STOCKHOLM 2013. [DOI: 10.1111/azo.12047] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Dmitry Ponomarev
- Institute of Geology of Komi Science Center; Ural Branch; Russian Academy of Sciences; 54 Pervomayskaya Street 167982 Syktyvkar Russia
| | - Andrey Puzachenko
- Institute of Geography; Russian Academy of Sciences; Staromonetny 29 119017 Moscow Russia
| | - Konstantin Isaychev
- Institute of Geology of Komi Science Center; Ural Branch; Russian Academy of Sciences; 54 Pervomayskaya Street 167982 Syktyvkar Russia
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Abstract
The thermal imaging diagnostics of measuring pulsed electron beam energy density is presented. It provides control of the electron energy spectrum and a measure of the density distribution of the electron beam cross section, the spatial distribution of electrons with energies in the selected range, and the total energy of the electron beam. The diagnostics is based on the thermal imager registration of the imaging electron beam thermal print in a material with low bulk density and low thermal conductivity. Testing of the thermal imaging diagnostics has been conducted on a pulsed electron accelerator TEU-500. The energy of the electrons was 300-500 keV, the density of the electron current was 0.1-0.4 kA/cm(2), the duration of the pulse (at half-height) was 60 ns, and the energy in the pulse was up to 100 J. To register the thermal print, a thermal imager Fluke-Ti10 was used. Testing showed that the sensitivity of a typical thermal imager provides the registration of a pulsed electron beam heat pattern within one pulse with energy density over 0.1 J/cm(2) (or with current density over 10 A/cm(2), pulse duration of 60 ns and electron energy of 400 keV) with the spatial resolution of 0.9-1 mm. In contrast to the method of using radiosensitive (dosimetric) materials, thermal imaging diagnostics does not require either expensive consumables, or plenty of processing time.
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Affiliation(s)
- A Pushkarev
- Tomsk Polytechnic University, 30 Lenin Ave., Tomsk, 634050, Russia.
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41
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Ponomarev D, Takhistov V, Slayden S, Liebman J. Thermochemistry of organic, elementorganic and inorganic species. Part XXI: Enthalpies of formation for bi- and triradicals of main group elements’ halogenides. J Mol Struct 2008. [DOI: 10.1016/j.molstruc.2007.05.040] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Ponomarev D, Takhistov V, Slayden S, Liebman J. Thermochemistry of organic, elementorganic and inorganic species. Part XX. Enthalpies of formation for free radicals of main group elements’ halogenides. J Mol Struct 2008. [DOI: 10.1016/j.molstruc.2007.05.038] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Marikh K, Berthiaux H, Mizonov V, Barantseva E, Ponomarev D. Flow Analysis and Markov Chain Modelling to Quantify the Agitation Effect in a Continuous Powder Mixer. Chem Eng Res Des 2006. [DOI: 10.1205/cherd05032] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Ponomarev D, Takhistov V. Thermochemistry of organic and heteroorganic species. Part XIII. Structural aspects and thermochemical approach to isomerization and fragmentation of negative ions. Simple bond cleavage and hydrogen rearrangement processes. J Mol Struct 2006. [DOI: 10.1016/j.molstruc.2005.09.018] [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]
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Marisavljevic D, Markovic O, Cemerkic-Martinovic V, Ponomarev D. Plasmacytoma of the lung: an indolent disease resistant to conventional myeloma treatment: report of a case. Med Oncol 2005; 22:207-10. [PMID: 15965286 DOI: 10.1385/mo:22:2:207] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2004] [Accepted: 01/15/2005] [Indexed: 11/11/2022]
Abstract
Solitary lung plasmacytoma is a rare form of plasma cell tumors. The case of a 56-yr-old man is presented, who had a massive tumor of the right pulmonary apex. Percutaneous transthoracic lung biopsy demonstrated a tumor-cell population consisting of mature plasma cells, proplasmacytes, and rare plasmablasts. Immunohistochemically, the cells were CD79a+, kappa+, cyclin D1-, p53-, MDR-. Proliferative index was low (number of Ki-67+ tumor cells was 8%). Serum and urine immunoelectrophoresis did not show the presence of paraprotein. Screening for multiple myeloma with skeletal X-ray survey and bone marrow biopsy were negative. Radiotherapy and chemotherapy with alkylating agents were ineffective. However, the course of the disease is indolent and the patient is well, alive, and with no signs of multiple myeloma >5 yr after the diagnosis was established. Some pathogenetic aspects of tumor resistance to conventional myeloma treatment in this case are discussed.
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Affiliation(s)
- D Marisavljevic
- Department of Hematology, Medical Training Center Bezanijska Kosa, 11080 Belgrade, Serbia and Montenegro.
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Ponomarev D, Hurley MD, Wallington TJ. Kinetics of the reactions of fluorine and chlorine atoms with ethylene oxide (oxirane). INT J CHEM KINET 2002. [DOI: 10.1002/kin.10029] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Dragičević J, Drecun V, Babić M, Vasiljević Z, Drezgić M, Ponomarev D, Bisenić V, Petrović J. Risk factors in the development of coronary heart disease in women. Atherosclerosis 2000. [DOI: 10.1016/s0021-9150(00)81024-2] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Aćimović S, Sikimić S, Ponomarev D, Ranković B, Karlicić V, Tomić I, Mirović V, Stojiljković B, Mrda V. [Personal experience in the treatment of tuberculosis in patients in war areas]. VOJNOSANIT PREGL 1996; 53:281-6. [PMID: 9229942] [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: 02/04/2023] Open
Abstract
In the four-year period (1991-1995), 96 tuberculosis patients from the war areas of former Yugoslavia were treated in the Clinic for Lung Diseases of Military Medical Academy, that makes 31% of total number of sick and treated for tuberculosis-309 (100%). In group I (patients from war areas) there were 45 cases of cavernous pulmonary tuberculosis (47%), 28 bilateral (29%), 16 pleurisy (16.7%) and 6 cases of extensive pulmonary tuberculosis (5.1%). Among 213 patients (100%) from group II (patients from FR Yugoslavia), 81 patients had cavernous pulmonary tuberculosis (38%), 49 patients had bilateral (23%), 33 patients had pleurisy (15.5%) and 6 patients had extensive pulmonary tuberculosis (2.8%). In group I the diagnosis was bacteriologically and/or histopathologically proved in 94.8% cases: by finding of acid-resistant bacilli in sputum and other biological materials in 69 patients (72%), by positive Löwenstein's cultures in 73 patients (76%) and by histopathological result of tuberculosis inflammation in 34 patients (35.4%). In group II tuberculosis was bacteriologically and/or histopathologically proved in 134 patients (63%) by acid-resistant bacilli in sputum and other biological materials, in 141 patient (66%) by positive Löwenstein's culture and in 71 patient by positive histopathological results. Pulmonary tuberculosis in war areas is characterized by greater frequency of severe clinical forms (cavernous, bilateral and extensive) and by high direct bacillarity.
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Affiliation(s)
- S Aćimović
- Vojnomedicinska akademija, Klinika za plućne bolesti, Beograd
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Ponomarev D. [Treatment of pneumonia under hospital conditions]. VOJNOSANIT PREGL 1995; 52:135-41. [PMID: 7571525] [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: 01/26/2023] Open
Abstract
A random sample of 24 patients affected by bacterial pneumonia has been investigated whether their illness is treated etiologically. The agents have been detected from the endoscopically obtained samples of blood or chest punctate (percutaneous needle aspirate--PNA) and their sensitivity to antibacterial drugs, used in our institution, have been investigated. The obtained results have been compared to the empirically applied drugs. In only three patients the first given drug corresponded to the later obtained finding of the agent's sensitivity and in one patient third and the fourth drug has been adequate. The rational initial therapy has been proposed on the basis of investigation of the sensitivity of the bacterial pneumonia agents.
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Affiliation(s)
- D Ponomarev
- Vojnomedicinska akademija, Klinika za plućne bolesti, Beograd
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Ponomarev D, Dangubić V, Rasevska V, Srdić N, Tomanović B. [Contribution of fiber optic bronchoscopy to the etiologic diagnosis of bacterial pneumonia]. VOJNOSANIT PREGL 1995; 52:49-57. [PMID: 7638951] [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: 01/26/2023] Open
Abstract
In 24 patients with bacterial pneumonia, reliability of the samples routinely taken for etiologic diagnosis (sputum, throat swab, bronchial brushing, bronchoalveolar lavage fluid--BALF, blood, pleural fluid) was determined. Organisms detected in blood, pleural fluid, transbronchial biopsy (TBB) or percutaneous transthoracic needle aspiration biopsy (PTNAB) samples were considered as truly causative, whereas those isolated in at least two various samples from a single patient were considered as presumably causative. Most sensitive diagnostic samples were BALF, TBB and PTNAB (100% each). However, the specificity of BALF was very low (17%). Bronchial aspirate was highly sensitive (95%) but not specific (14%). Bronchial brushing was sensitive (86%) but its specificity low (14%). Sputum was hardly sensitive (40%) and had no specificity. Throat swab had virtually no diagnostic value because of its low sensitivity (10.5%) and specificity (50%).
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Affiliation(s)
- D Ponomarev
- Vojnomedicinska akademija, Klinika za plućne bolesti, Institut za mikrobiologiju ZPM, Beograd
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