Experimental studies on artificial blood usage for hemodilution during cardiopulmonary bypass.

Mitsuhiro Isaka, Ichiro Sakuma, Michiaki Imamura, Yutaka Makino, Shoji Fukushima, Kunihiko Nakai, Norihiko Shiiya, Osamu Kenmotsu, Akira Kitabatake, Keishu Yasuda

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)


BACKGROUND: Although hemodilution is usually utilized during cardiopulmonary bypass (CPB), hemodilution can cause adverse effects such as hypotension and hypoxia. The purpose of this study was to evaluate a novel perfluoro-octyl bromide (PFOB) emulsion, one of perfluorochemicals (PFCs) emulsions, administered during hemodilution CPB. METHODS: Fifteen dogs were subjected to CPB for 2 hours under mild hypothermia. Animals were divided into three groups; control group, hemodilution group and PFOB group. During the experiment, hemodynamics, complete blood count and blood chemistry were monitored. In addition, serum complement titer (CH50), bradykinin and histamine concentrations were also measured. RESULTS: Heart rate (HR) was markedly elevated in the hemodilution groups (p<0.05). Mean arterial pressure (MAP) did not change in the three groups. White blood cell (WBC) and platelet (PLT) count did not significantly differ among the three groups. Plasma lactate concentration was markedly elevated only in hemodilution group during late phase of CPB (p<0.05). In the hemodilution group, CH50, bradykinin and histamine, were markedly elevated during the CPB and just after CPB (p<0.05). CONCLUSIONS: The present study demonstrated possible benefits of the new PFC emulsion during cardiac surgery by counteracting the adverse effects of hemodilution during CPB.

Original languageEnglish
Pages (from-to)238-244
Number of pages7
JournalAnnals of thoracic and cardiovascular surgery : official journal of the Association of Thoracic and Cardiovascular Surgeons of Asia
Issue number4
Publication statusPublished - 2005 Aug
Externally publishedYes

ASJC Scopus subject areas

  • Surgery
  • Pulmonary and Respiratory Medicine
  • Cardiology and Cardiovascular Medicine
  • Gastroenterology


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