1. Enheten
  2. Ansatte
  3. Timofey Kondratyev
TK-2003.jpg
TK-2003.jpg
Institutt for klinisk medisin timofey.kondratiev@uit.no +4777644780 95215728 Tromsø MH L7.239

Timofey Kondratyev

Senioringeniør

Stillingsbeskrivelse

Arbeid med eksperimentelle dyremodeller, laboratoriedrift, opplæring av stipendiater ved Akuttmedisin og anestesiologi forskningsgruppe, data og prøveanalyse.

Arbeidsområder

  • Nivfors, Joar O.; Mohyuddin, Rizwan; Schanche, Torstein; Nilsen, Jan Harald; Valkov, Sergey; Kondratyev, Timofey; Sieck, Gary C.; Tveita, Torkjel. Rewarming With Closed Thoracic Lavage Following 3-h CPR at 27°C Failed to Reestablish a Perfusing Rhythm. Frontiers in Physiology 2021; Volum 12. ISSN 1664-042X.s 1 - 11.s doi: 10.3389/fphys.2021.741241.
  • Nilsen, Jan Harald; Schanche, Torstein Lindahl; Valkov, Sergey; Mohyuddin, Rizwan; Håheim, Brage; Kondratyev, Timofey; Næsheim, Torvind; Sieck, Gary C.; Tveita, Torkjel. Effects of rewarming with extracorporeal membrane oxygenation to restore oxygen transport and organ blood flow after hypothermic cardiac arrest in a porcine model. Scientific Reports 2021; Volum 11:18918. ISSN 2045-2322.s 1 - 12.s doi: 10.1038/s41598-021-98044-2.
  • Mohyuddin, Rizwan; Dietrichs, Erik Sveberg; Sundaram, Predip; Kondratyev, Timofey; Figenschou, Marie; Sieck, Gary C.; Tveita, Torkjel. Cardiovascular Effects of Epinephrine During Experimental Hypothermia (32°C) With Spontaneous Circulation in an Intact Porcine Model. Frontiers in Physiology 2021; Volum 12. ISSN 1664-042X.s 1 - 14.s doi: 10.3389/fphys.2021.718667.
  • Gaustad, Svein E.; Kondratyev, Timofey; Eftedal, Ingrid; Tveita, Torkjel. Effects of Cold Decompression on Hemodynamic Function and Decompression Sickness Risk in a Dry Diving Rat Model. Frontiers in Physiology 2021; Volum 12. ISSN 1664-042X.s doi: 10.3389/fphys.2021.763975.
  • Selli, Anders Lund; Kuzmiszyn, Adrina Kalasho; Smaglyukova, Natalia; Kondratyev, Timofey; Fuskevåg, Ole Martin; Lyså, Roy Andre; Ravna, Aina Westrheim; Tveita, Torkjel; Sager, Georg; Dietrichs, Erik Sveberg. Treatment of cardiovascular dysfunction with PDE5-inhibitors - temperature dependent effects on transport and metabolism of cAMP and cGMP. Frontiers in Physiology 2021. ISSN 1664-042X.s doi: 10.3389/fphys.2021.695779.
  • Nilsen, Jan Harald; Schanche, Torstein; Kondratyev, Timofey; Hevrøy, Olav; Sieck, Gary C.; Tveita, Torkjel. Maintaining intravenous volume mitigates hypothermia-induced myocardial dysfunction and accumulation of intracellular Ca<sup>2+</sup>. Experimental Physiology 2021; Volum 106 (5). ISSN 0958-0670.s 1 - 12.s doi: 10.1113/EP089397.
  • Dietrichs, Erik Sveberg; Selli, Anders Lund; Kondratyev, Timofey; McGlynn, Karen; Smith, Godfrey L; Tveita, Torkjel. Resistance to ventricular fibrillation predicted by the QRS/QTc - ratio in an intact rat model of hypothermia/rewarming. Cryobiology 2021; Volum 98. ISSN 0011-2240.s 33 - 38.s doi: 10.1016/j.cryobiol.2021.01.003.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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) Experimental Physiology 2018; Volum 104 (1). ISSN 0958-0670.s 50 - 60.s doi: 10.1113/EP087205.
  • 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.
  • 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; 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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) Critical Care 2010; Volum 14 (6). ISSN 1364-8535.s doi: 10.1186/cc9334.
  • 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.
  • 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.
  • 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; 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.
  • 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.
  • 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.
  • Kondratiev, Timofei; Tveita, Torkjel. Effects of sympathetic stimulation during cooling on hypothermic as well as posthypothermic hemodynamic function. (sammendrag) Canadian Journal of Physiology and Pharmacology 2006; Volum 84 (october). ISSN 0008-4212.s 985 - 991.s doi: 10.1139/Y06-051.
  • 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 (data) (fulltekst) 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; 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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; 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.
  • 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.
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