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  • 1.
    Olsson, Anki
    et al.
    Blekinge Institute of Technology, Faculty of Health Sciences, Department of Health.
    Alfredsson, Joakim
    Håkansson, Erik
    Svedjeholm, R.
    Berglund, Johan
    Blekinge Institute of Technology, Faculty of Health Sciences, Department of Health.
    Berg, Sören
    Protamine reduces whole blood platelet aggregation after cardiopulmonary bypass2015In: Scandinavian Cardiovascular Journal, ISSN 1401-7431, E-ISSN 1651-2006, Vol. 50, no 1, p. 58-63Article in journal (Refereed)
    Abstract [en]

    Objectives: Platelet dysfunction is an important cause of postoperative bleeding after cardiac surgery. Protamine is routinely used for reversal of heparin after cardiopulmonary bypass (CBP), but may affect platelet aggregation. We assessed changes in platelet function in relation to protamine administration. Design: Platelet aggregation was analyzed by impedance aggregometry before and after protamine administration in 25 adult cardiac surgery patients. Aggregation was also studied after in vitro addition of heparin and protamine. The activators adenosine diphosphate (ADP), thrombin receptor activating peptide-6 (TRAP), arachidonic acid (AA) and collagen (COL) were used. Results: Platelet aggregation was reduced by approximately 50% after in vivo protamine administration; ADP 640 ± 230 (AU*min, mean ± SD) to 250 ± 160, TRAP 939 ± 293 to 472 ± 260, AA 307 ± 238 to 159 ± 143 and COL 1022 ± 350 to 506 ± 238 (all p < 0.001). Aggregation was also reduced after in vitro addition of protamine alone with activators ADP from 518 ± 173 to 384 ± 157 AU*min p < 0.001, and AA 449 ± 311 to 340 ± 285 (p < 0.01) and protamine combined with heparin (1:1 ratio) with activators ADP to 349 ± 160 and AA to 308 ± 260 (both p < 0.001); and COL from 586 ± 180 to 455 ± 172 (p < 0.05). Conclusions: Protamine given after CPB markedly reduces platelet aggregation. Protamine added in vitro also reduces platelet aggregation, by itself or in combination with heparin. © 2015 Taylor & Francis

  • 2.
    Olsson, Anki
    et al.
    Blekinge Inst Technol, Dept Hlth Sci, Vallhallavagen 1, S-37179 Karlskrona, Sweden.;Linkoping Univ, Dept Med & Hlth Sci, Linkoping, Sweden.;Blekinge Hosp, Dept Cardiothorac Surg, Karlskrona, Sweden..
    Alfredsson, Joakim
    Linkoping Univ, SWE.
    Ramstrom, Sofia
    Linkoping Univ, SWE.
    Svedjeholm, Rolf
    Linkoping Univ, SWE.
    Kenny, Dermot
    Royal Coll Surgeons Ireland, IRE.
    Hakansson, Eric
    Linkoping Univ, SWE.
    Sanmartin Berglund, Johan
    Blekinge Institute of Technology, Faculty of Engineering, Department of Health.
    Berg, Soren
    Linkoping Univ, SWE.
    Better platelet function, less fibrinolysis and less hemolysis in re-transfused residual pump blood with the Ringer's chase technique: a randomized pilot study2018In: Perfusion, ISSN 0267-6591, E-ISSN 1477-111X, Vol. 33, no 3, p. 185-193Article in journal (Refereed)
    Abstract [en]

    Introduction: Residual pump blood from the cardiopulmonary bypass (CPB) circuit is often collected into an infusion bag (IB) and re-transfused. An alternative is to chase the residual blood into the circulation through the arterial cannula with Ringer's acetate. Our aim was to assess possible differences in hemostatic blood quality between these two techniques. Methods: Forty adult patients undergoing elective coronary artery bypass graft surgery with CPB were randomized to receive the residual pump blood by either an IB or through the Ringer's chase (RC) technique. Platelet activation and function (impedance aggregometry), coagulation and hemolysis variables were assessed in the re-transfused blood and in the patients before, during and after surgery. Results are presented as median (25-75 quartiles). Results: Total hemoglobin and platelet levels in the re-transfused blood were comparable with the two methods, as were soluble platelet activation markers P-selectin and soluble glycoprotein VI (GPVI). Platelet aggregation (U) in the IB blood was significantly lower compared to the RC blood, with the agonists adenosine diphosphate (ADP) 24 (10-32) vs 46 (33-65), p<0.01, thrombin receptor activating peptide (TRAP) 50 (29-73) vs 69 (51-92), p=0.04 and collagen 24 (17-28) vs 34 (26-59), p<0.01. The IB blood had higher amounts of free hemoglobin (mg/L) (1086 (891-1717) vs 591(517-646), p<0.01) and D-dimer 0.60 (0.33-0.98) vs 0.3 (0.3-0.48), p<0.01. Other coagulation variables showed no difference between the groups. Conclusions: The handling of blood after CPB increases hemolysis, impairs platelet function and activates coagulation and fibrinolysis. The RC technique preserved the blood better than the commonly used IB technique.

  • 3.
    Widen, Cecilia
    et al.
    Kristianstad Univ, Sch Hlth & Soc, SE-29188 Kristianstad, Sweden..
    Holmer, Helene
    Kristianstad Cent Hosp, Kristianstad, Sweden..
    Coleman, Michael
    Aston Univ, Birmingham, W Midlands, England..
    Tudor, Marian
    Kristianstad Cent Hosp, Kristianstad, Sweden..
    Ohlsson, Ola
    Kristianstad Univ, Sch Hlth & Soc, SE-29188 Kristianstad, Sweden.;Kristianstad Cent Hosp, Kristianstad, Sweden..
    Sattlin, Susanna
    Kristianstad Univ, Sch Hlth & Soc, SE-29188 Kristianstad, Sweden..
    Renvert, Stefan
    Blekinge Institute of Technology, Faculty of Engineering, Department of Health.
    Persson, Gösta Rutger
    Kristianstad Univ, Sch Hlth & Soc, SE-29188 Kristianstad, Sweden.;Univ Washington, Seattle, WA 98195 USA..
    Systemic inflammatory impact of periodontitis on acute coronary syndrome2016In: Journal of Clinical Periodontology, ISSN 0303-6979, E-ISSN 1600-051X, Vol. 43, no 9, p. 713-719Article in journal (Refereed)
    Abstract [en]

    AimA causative relationship between acute coronary syndrome (ACS) and periodontitis has yet to be defined. The aim of this study was to assess differences in levels of serum cytokines between individuals with or without ACS or periodontal comorbidity. Material and MethodsIn a case-control study, individuals with ACS (78 individuals, 10.3% females) and matching healthy controls (78 individuals, 28.2% females) were included. Medical and dental examinations were performed to diagnose ACS and periodontitis. Serum levels of cytokines were assessed, using Luminex technology. ResultsA diagnosis of periodontitis in the ACS and control group was diagnosed in 52.6% and 12.8% of the individuals, respectively. The unadjusted odds-ratio that individuals with ACS also had periodontitis was 7.5 (95% CI: 3.4, 16.8, p<0.001). Independent of periodontal conditions, individuals with ACS had significantly higher serum levels of IL8 (mean: 44.3 and 40.0pg/ml) and vascular endothelial growth factor (VEGF) (mean: 82.3 and 55.3pg/ml) than control individuals. A diagnosis of periodontitis made no difference in serum cytokine expressions. ConclusionElevated serum levels of VEGF were associated with ACS. Serum cytokine expression in individuals with ACS is unrelated to periodontal conditions.

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