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Senior Engineer

Timofey Kondratyev

Senior engineer Department of Clinical Medicine
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Work with experimental animal models, laboratory and equipment maintenance, training of PhD students in Anesthesia and Critical Care research group, data and sample analysis.

  • Gaustad, Svein Erik; Kondratyev, Timofey; Eftedal, Ingrid; Tveita, Torkjel. Continuous Hemodynamic Monitoring in an Intact Rat Model of Simulated Diving. Frontiers in Physiology 2020; Volum 10. ISSN 1664-042X.s doi: 10.3389/fphys.2019.01597.

  • Håheim, Brage; Kondratyev, Timofey; Dietrichs, Erik Sveberg; Tveita, Torkjel. Comparison between two pharmacologic strategies to alleviate rewarming shock: vasodilation vs. inodilation. Frontiers in medicine 2020. ISSN 2296-858X.s doi: 10.3389/fmed.2020.566388.

  • Nilsen, Jan Harald; Valkov, Sergey; Mohyuddin, Rizwan; Schanche, Torstein Lindahl; Kondratyev, Timofey; Næsheim, Torvind; Sieck, Gary C.; Tveita, Torkjel. Study of the effects of 3 h of continuous cardiopulmonary resuscitation at 27°C on global oxygen transport and organ blood flow. Frontiers in Physiology 2020; Volum 11:213. ISSN 1664-042X.s 1 - 11.s doi: 10.3389/fphys.2020.00213.

  • Schanche, Torstein Lindahl; Kondratyev, Timofey; Tveita, Torkjel. Extracorporeal rewarming from experimental hypothermia: Effects of hydroxyethyl starch versus saline priming on fluid balance and blood flow distribution. Experimental Physiology 2019. ISSN 0958-0670.s doi: 10.1113/EP087786.

  • Kuklin, Vladimir; Akhatov, Nurlan; Kondratyev, Timofey; Konkaev, Aidos; Baigenzhin, Abay K.; Konkaeva, Maya; Karibekov, Temirlan; Barlow, Nicholas; Tveita, Torkjel; Dahl, Vegard. The influences of morphine or ketamine pre-treatment on hemodynamic, acid-base status, biochemical markers of brain damage and early survival in rats after asphyxial cardiac arrest. BMC Anesthesiology 2019; Volum 19:214. ISSN 1471-2253.s 1 - 9.s doi: 10.1186/s12871-019-0884-6.

  • Dietrichs, Erik Sveberg; Håheim, Brage; Kondratyev, Timofey; Traasdahl, Erik R.; Tveita, Torkjel. Effects of hypothermia and rewarming on cardiovascular autonomic control in vivo. Journal of applied physiology 2018; Volum 124 (4). ISSN 8750-7587.s 850 - 859.s doi: 10.1152/japplphysiol.00317.2017.

  • Valkov, Sergey; Mohyuddin, Rizwan; Nilsen, Jan Harald; Schanche, Torstein Lindahl; Kondratyev, Timofey; Sieck, Gary C.; Tveita, Torkjel. Organ blood flow and O2 transport during hypothermia (27°C) and rewarming in a pig model. (Fulltekst: https://physoc.onlinelibrary.wiley.com/doi/abs/10.1113/EP087205 Experimental Physiology 2018; Volum 104 (1). ISSN 0958-0670.s 50 - 60.s doi: 10.1113/EP087205.

  • Håheim, Brage; Kondratyev, Timofey; Dietrichs, Erik Sveberg; Tveita, Torkjel. The beneficial hemodynamic effects of afterload reduction by sodium nitroprusside during rewarming from experimental hypothermia. Cryobiology 2017; Volum 77. ISSN 0011-2240.s 75 - 81.s doi: 10.1016/j.cryobiol.2017.05.002.

  • Halsøy, Kathrine; Kondratyev, Timofey; Tveita, Torkjel; Bjertnaes, Lars J.. Effects of Constant Flow vs. Constant Pressure Perfusion on Fluid Filtration in Severe Hypothermic Isolated Blood-Perfused Rat Lungs. Frontiers in medicine 2016. ISSN 2296-858X.s doi: 10.3389/fmed.2016.00070.

  • Dietrichs, Erik Sveberg; Schanche, Torstein; Kondratyev, Timofey; Gaustad, Svein Erik; Sager, Georg; Tveita, Torkjel. Negative inotropic effects of epinephrine in the presence of increased β-adrenoceptor sensitivity during hypothermia in a rat model. Cryobiology 2015; Volum 70 (1). ISSN 0011-2240.s 9 - 16.s doi: 10.1016/j.cryobiol.2014.10.012.

  • Dietrichs, Erik Sveberg; Kondratyev, Timofey; Tveita, Torkjel. Milrinone ameliorates cardiac mechanical dysfunction after hypothermia in an intact rat model. Cryobiology 2014; Volum 69 (3). ISSN 0011-2240.s 361 - 366.s doi: 10.1016/j.cryobiol.2014.09.002.

  • Dietrichs, Erik Sveberg; Håheim, Brage; Kondratyev, Timofey; Sieck, Gary C.; Tveita, Torkjel. Cardiovascular effects of levosimendan during rewarming from hypothermia in rat. Cryobiology 2014; Volum 69 (3). ISSN 0011-2240.s 402 - 410.s doi: 10.1016/j.cryobiol.2014.09.007.

  • Wold, Ragnhild Margrete; Kondratyev, Timofey; Tveita, Torkjel. Myocardial calcium overload during graded hypothermia and after rewarming in an in vivo rat model. Acta Physiologica 2013; Volum 207 (3). ISSN 1748-1708.s 460 - 469.s doi: 10.1111/apha.12003.

  • Filseth, Ole Magnus; How, Ole-Jakob; Kondratyev, Timofey; Gamst, Tor Magne; Sager, Georg; Tveita, Torkjel. Changes in cardiovascular effects of dopamine in response to graded hypothermia in vivo. Critical Care Medicine 2012; Volum 40 (1). ISSN 0090-3493.s 178 - 186.s doi: 10.1097/CCM.0b013e31822d78de.

  • Suborov, Evgeny; Smetkin, Alexey Anatolievich; Kondratyev, Timofey; Valkov, Andrey Yurjevich; Kuzkov, Vsevolod; Kirov, Mikhail; Bjertnaes, Lars J.. Inhibitor of neuronal nitric oxide synthase improves gas exchange in ventilator-induced lung injury after pneumonectomy. BMC Anesthesiology 2012; Volum 12 (10). ISSN 1471-2253.s doi: 10.1186/1471-2253-12-10.

  • Rösner, Assami; How, Ole-Jakob; Aarsæther, Erling Johan; Stenberg, Thor Allan; Andreasen, Thomas Vennø; Kondratiev, Timofei; Larsen, Terje; Myrmel, Truls. High Resolution Speckle Tracking Dobutamine Stress Echocardiography Reveals Heterogeneous Responses in Different Myocardial Layers: Implication for Viability Assessments. Journal of the American Society of Echocardiography 2010; Volum 23 (4). ISSN 0894-7317.s 439 - 447.s doi: 10.1016/j.echo.2009.12.023.

  • Filseth, Ole Magnus; How, Ole-Jakob; Kondratiev, Timofei; Gamst, Tor Magne; Tveita, Torkjel. Post-hypothermic cardiac left ventricular systolic dysfunction after rewarming in an intact pig model. (Fulltekst: http://ccforum.com/content/14/6/R211 Critical Care 2010; Volum 14 (6). ISSN 1364-8535.s doi: 10.1186/cc9334.

  • han, ys; Tveita, Torkjel; Kondratiev, Timofei; prakash, y s; Sieck, GC. changes in cardiovascular beta-adrenoceptor responses during hypothermia. Cryobiology 2008; Volum 57 (3). ISSN 0011-2240.s 246 - 250.

  • Kondratiev, Timofei; Wold, Ragnhild Margrete; Aasum, Ellen; Tveita, Torkjel. Myocardial mechanical dysfunction and calcium overload following rewarming from experimental hypothermia in vivo. Cryobiology 2008; Volum 56. ISSN 0011-2240.s 15 - 21.s doi: 10.1016/j.cryobiol.2007.09.005.

  • Kondratiev, Timofei; Myhre, Eivind S.P.; Simonsen, Øystein Thunheim; Nymark, Tor-Bjarne; Tveita, Torkjel. Cardiovascular effects of epinephrine during rewarming from hypothermia in an intact animal model. Journal of applied physiology 2006; Volum 100 (2). ISSN 8750-7587.s 457 - 464.s doi: 10.1152/japplphysiol.00356.200.

  • Kondratiev, Timofei; Tveita, Torkjel. Effects of sympathetic stimulation during cooling on hypothermic as well as posthypothermic hemodynamic function. (Sammendrag: http://rparticle.web-p.cisti.nrc.ca/rparticle/AbstractTemplateServlet?journal=cjpp&volume=84&year=&issue=&msno=y06-051&calyLang=eng) Canadian Journal of Physiology and Pharmacology 2006; Volum 84 (october). ISSN 0008-4212.s 985 - 991.s doi: 10.1139/Y06-051.

  • Kondratiev, Timofei; Flemming, Kristina; Myhre, Eivind S. P.; Sovershaev, Mikhail; Tveita, Torkjel. Is oxygen supply a limiting factor for survival during rewarming from profound hypothermia?. American Journal of Physiology. Heart and Circulatory Physiology 2006; Volum 291. ISSN 0363-6135.s H441 - H450.

  • Egorina, Elena; Sovershaev, Mikhail; Kondratiev, Timofei; Olsen, Jan Ole; Tveita, Torkjel; Østerud, Bjarne. Induction of monocytic TF expression after rewarming from hypothermia in vivo is counteracted by heat shock in c-Jun-dependent manner. Arteriosclerosis, Thrombosis and Vascular Biology 2006; Volum 26. ISSN 1079-5642.s 2401 - 2406.

  • Kuklin, Vladimir; Kondratyev, Timofey; Konkaeva, Maya; Akhatov, Nurlan; Sovershaev, MA; Konkaev, Aidos; Tveita, Torkjel; Dahl, Vegard. EFFECTS OF MORPHINE OR KETAMINE IN RATS WITH ASPHYXIAL CARDIAC ARREST: THE RESULTS OF PILOT STUDY. NAFs 59. Høstmøte 2017 2017-10-24 - 2017-10-27 2017.

  • Kuklin, Vladimir; Kondratyev, Timofey; Konkayeva, Maya; Akhatov, Nurlan; Sovershaev, Mikhail; Konkayev, Aidos; Tveita, Torkjel; Dahl, Vegard. Effects of morphine or ketamine in rats with asphyxial cardiac arrest: a pilot study. The International Anesthesia Research Society 2017 Annual Meeting and International science symposium (https://files.aievolution.com/ars1701/events/11233/1115_Kuklin_1075_0417_091305.pdf) (Fulltekst: https://files.aievolution.com/ars1701/events/11233/1115_Kuklin_1075_0417_091305.pdf 2017-05-06 - 2017-05-09 2017.

  • How, Ole-Jakob; Næsheim, Torvind; Bakkehaug, Jens Petter; Kondratyev, Timofey; Remme, Espen W.; Myrmel, Truls. Elevated preload is critical for synchronization of myocardial lengthening (e) and mitral inflow (E) in acute ischemic acute heart failure. The FASEB Journal 2013; Volum 27. ISSN 0892-6638.

  • Filseth, Ole magnus; How, Ole-Jakob; Kondratiev, Timofei; Gamst, Tor Magne; Tveita, Torkjel. CARDIAC FUNCTION DURING SEVERE IMMERSION HYPOTHERMIA AND REWARMING IN PIGS. Intensive Care Medicine 2010; Volum 36. ISSN 0342-4642.s S121 - S121.

  • Gaustad, Svein Erik; Kondratiev, Timofei; Møllerløkken, Andreas; Wisløff, Ulrik; Brubakk, Alf O; Tveita, Torkjel. Dynamic changes in cardiovascular function during diving and decompression at different core temperatures. EUBS 2010-09-10 - 2010.

  • Filseth, OM; How, Ole-Jakob; Kondratiev, Timofei; Gamst, Tor Magne; Sager, Georg; Tveita, Torkjel. DOPAMINE INFUSIONS IN NORMOTHERMIA, SEVERE HYPOTHERMIA AND DURING REWARMING: PHARMACOKINETICS AND CARDIOVASCULAR FUNCTION IN A PIG MODEL OF SURFACE COOLING AND REWARMING. Intensive Care Medicine 2010; Volum 36. ISSN 0342-4642.s S121 - S121.

  • Sveberg Dietrichs, Erik; Kondratiev, Timofei; Tveita, Torkjel. Cardiovascular effects of milrinone during rewarming from hypothermia in an intact animal model. 3rd International Hypothermia Symposium 2009-09-02 - 2009-09-05 2009.

  • Han, YS; Tveita, Torkjel; Kondratiev, Timofei; Prakash, YS; Sieck, GC. The physiologic response to isoproterenol during hypothermia and rewarming. The FASEB Journal 2007; Volum 21. ISSN 0892-6638.

  • Han, YS; Tveita, Torkjel; Kondratiev, Timofei; Sieck, GC. Change in physiologic response to isoproterenol induced by hypothermia is not reversed by rewarming. Acta Anaesthesiologica Scandinavica 2007; Volum 51. ISSN 0001-5172.s 27 - 27.

  • Egorina, elena; Sovershaev, Mikhail; Kondratiev, Timofei; Olsen, Jan Ole; Tveita, torkjel; Østerud, Bjarne. Heat Shock Prevents Tissue Factor Induction after Rewarming from Lethal Hypothermia in a c-Jun-Dependent Manner. American Society of Hematology 48th Annual Meeting 2006-12-08 - 2006-12-12 2006.

  • Kondratiev, Timofei; Tveita, torkjel. Hypothermia-induced myocardial dysfunction. An in vivo experimental study with special reference to effects of epinephrine applied for posthypothermic cardiovascular resuscitation. 2006 ISBN 82-7589-169-8.

  • Egorina, elena; Sovershaev, Mikhail; Kondratiev, Timofei; Olsen, Jan Ole; Tveita, torkjel; Østerud, Bjarne. Heat shock prevents tissue factor expression after rewarming from lethal hypothermia in c-Jun-dependent manner. American Society of Hematology 2006-12-09 - 2006-12-12 2006.

  • Wold, Ragnhild Margrete; Kondratiev, Timofei; Tveita, Torkjel. Myocardial calcium control during short- and long-lasting hypothermia and rewarming in an in situ rat model. Journal of Molecular and Cellular Cardiology 2005; Volum 38. ISSN 0022-2828.s 1082 - 1082.

  • Kondratiev, Timofei; Wold, Ragnhild Margrete; Tveita, torkjel. Effects of hypothermia and rewarming on myocardial calcium control in an intact animal model. Høstmøte, Norsk anestesiologisk forening 2003-10-21 - 2003-10-24 2003.

  • Kondratiev, Timofei; Tveita, torkjel. Presistent myocardial depression during hypothermia and rewarming following sympathetic stimulation during cooling. The 26th Congress of The Scandinavian Society of Anaesthesiology and Intensive Care Medicine 2001-06-13 - 2001-06-17 2001.

  • Kondratiev, Timofei; Simonsen, Øystein; Tor-Bjarne, Nymark; Tveita, torkjel. Altered dose dependent inotropic effects of epinephrine during hypothermia and rewarming. Publisert: Acta anaesthesiologica scandinavica, (supplement), 115 (45), 2001, p.73. The 26th Congress of The Scandinavian Society of Anaesthesiology and Intensive Care Medicine 2001-06-13 - 2001-06-17 2001.

  • Kuklin, Vladimir; Kondratyev, Timofey; Konkaeva, Maya; Akhatov, Nurlan; Sovershaev, MA; Konkaev, Aidos; Tveita, Torkjel; Dahl, Vegard. EFFECTS OF MORPHINE OR KETAMINE IN RATS WITH ASPHYXIAL CARDIAC ARREST: THE RESULTS OF PILOT STUDY. NAFs 59. Høstmøte 2017 2017-10-24 - 2017-10-27 2017.

  • Kuklin, Vladimir; Kondratyev, Timofey; Konkayeva, Maya; Akhatov, Nurlan; Sovershaev, Mikhail; Konkayev, Aidos; Tveita, Torkjel; Dahl, Vegard. Effects of morphine or ketamine in rats with asphyxial cardiac arrest: a pilot study. The International Anesthesia Research Society 2017 Annual Meeting and International science symposium (https://files.aievolution.com/ars1701/events/11233/1115_Kuklin_1075_0417_091305.pdf) (Fulltekst: https://files.aievolution.com/ars1701/events/11233/1115_Kuklin_1075_0417_091305.pdf 2017-05-06 - 2017-05-09 2017.

  • How, Ole-Jakob; Næsheim, Torvind; Bakkehaug, Jens Petter; Kondratyev, Timofey; Remme, Espen W.; Myrmel, Truls. Elevated preload is critical for synchronization of myocardial lengthening (e) and mitral inflow (E) in acute ischemic acute heart failure. The FASEB Journal 2013; Volum 27. ISSN 0892-6638.

  • Filseth, Ole magnus; How, Ole-Jakob; Kondratiev, Timofei; Gamst, Tor Magne; Tveita, Torkjel. CARDIAC FUNCTION DURING SEVERE IMMERSION HYPOTHERMIA AND REWARMING IN PIGS. Intensive Care Medicine 2010; Volum 36. ISSN 0342-4642.s S121 - S121.

  • Gaustad, Svein Erik; Kondratiev, Timofei; Møllerløkken, Andreas; Wisløff, Ulrik; Brubakk, Alf O; Tveita, Torkjel. Dynamic changes in cardiovascular function during diving and decompression at different core temperatures. EUBS 2010-09-10 - 2010.

  • Filseth, OM; How, Ole-Jakob; Kondratiev, Timofei; Gamst, Tor Magne; Sager, Georg; Tveita, Torkjel. DOPAMINE INFUSIONS IN NORMOTHERMIA, SEVERE HYPOTHERMIA AND DURING REWARMING: PHARMACOKINETICS AND CARDIOVASCULAR FUNCTION IN A PIG MODEL OF SURFACE COOLING AND REWARMING. Intensive Care Medicine 2010; Volum 36. ISSN 0342-4642.s S121 - S121.

  • Sveberg Dietrichs, Erik; Kondratiev, Timofei; Tveita, Torkjel. Cardiovascular effects of milrinone during rewarming from hypothermia in an intact animal model. 3rd International Hypothermia Symposium 2009-09-02 - 2009-09-05 2009.

  • Han, YS; Tveita, Torkjel; Kondratiev, Timofei; Prakash, YS; Sieck, GC. The physiologic response to isoproterenol during hypothermia and rewarming. The FASEB Journal 2007; Volum 21. ISSN 0892-6638.

  • Han, YS; Tveita, Torkjel; Kondratiev, Timofei; Sieck, GC. Change in physiologic response to isoproterenol induced by hypothermia is not reversed by rewarming. Acta Anaesthesiologica Scandinavica 2007; Volum 51. ISSN 0001-5172.s 27 - 27.

  • Egorina, elena; Sovershaev, Mikhail; Kondratiev, Timofei; Olsen, Jan Ole; Tveita, torkjel; Østerud, Bjarne. Heat Shock Prevents Tissue Factor Induction after Rewarming from Lethal Hypothermia in a c-Jun-Dependent Manner. American Society of Hematology 48th Annual Meeting 2006-12-08 - 2006-12-12 2006.

  • Kondratiev, Timofei; Tveita, torkjel. Hypothermia-induced myocardial dysfunction. An in vivo experimental study with special reference to effects of epinephrine applied for posthypothermic cardiovascular resuscitation. 2006 ISBN 82-7589-169-8.

  • Egorina, elena; Sovershaev, Mikhail; Kondratiev, Timofei; Olsen, Jan Ole; Tveita, torkjel; Østerud, Bjarne. Heat shock prevents tissue factor expression after rewarming from lethal hypothermia in c-Jun-dependent manner. American Society of Hematology 2006-12-09 - 2006-12-12 2006.

  • Wold, Ragnhild Margrete; Kondratiev, Timofei; Tveita, Torkjel. Myocardial calcium control during short- and long-lasting hypothermia and rewarming in an in situ rat model. Journal of Molecular and Cellular Cardiology 2005; Volum 38. ISSN 0022-2828.s 1082 - 1082.

  • Kondratiev, Timofei; Wold, Ragnhild Margrete; Tveita, torkjel. Effects of hypothermia and rewarming on myocardial calcium control in an intact animal model. Høstmøte, Norsk anestesiologisk forening 2003-10-21 - 2003-10-24 2003.

  • Kondratiev, Timofei; Tveita, torkjel. Presistent myocardial depression during hypothermia and rewarming following sympathetic stimulation during cooling. The 26th Congress of The Scandinavian Society of Anaesthesiology and Intensive Care Medicine 2001-06-13 - 2001-06-17 2001.

  • Kondratiev, Timofei; Simonsen, Øystein; Tor-Bjarne, Nymark; Tveita, torkjel. Altered dose dependent inotropic effects of epinephrine during hypothermia and rewarming. Publisert: Acta anaesthesiologica scandinavica, (supplement), 115 (45), 2001, p.73. The 26th Congress of The Scandinavian Society of Anaesthesiology and Intensive Care Medicine 2001-06-13 - 2001-06-17 2001.

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