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Comparison of polyurethane with cyanoacrylate in hemostasis of vascular injury in guinea pigs / Comparação do poliuretano com cianoacrilato na hemostasia de injúria vascular em cobaias
Kubrusly, Luiz Fernando; Formighieri, Marina Simões; Lago, José Vitor Martins; Graça, Yorgos Luiz Santos de Salles; Sobral, Ana Cristina Lira; Lago, Marianna Martins.
  • Kubrusly, Luiz Fernando; Instituto do Coração de Curitiba. Curitiba. BR
  • Formighieri, Marina Simões; Instituto do Coração de Curitiba. Curitiba. BR
  • Lago, José Vitor Martins; Instituto do Coração de Curitiba. Curitiba. BR
  • Graça, Yorgos Luiz Santos de Salles; Instituto do Coração de Curitiba. Curitiba. BR
  • Sobral, Ana Cristina Lira; Instituto do Coração de Curitiba. Curitiba. BR
  • Lago, Marianna Martins; Instituto do Coração de Curitiba. Curitiba. BR
Rev. bras. cir. cardiovasc ; 30(1): 119-126, Jan-Mar/2015. tab, graf
Article in English | LILACS, SES-SP | ID: lil-742903
ABSTRACT

Objective:

To evaluate the behavior of castor oil-derived polyurethane as a hemostatic agent and tissue response after abdominal aortic injury and to compare it with 2-octyl-cyanoacrylate.

Methods:

Twenty-four Guinea Pigs were randomly divided into three groups of eight animals (I, II, and III). The infrarenal abdominal aorta was dissected, clamped proximally and distally to the vascular puncture site. In group I (control), hemostasis was achieved with digital pressure; in group II (polyurethane) castor oil-derived polyurethane was applied, and in group III (cyanoacrylate), 2-octyl-cyanoacrylate was used. Group II was subdivided into IIA and IIB according to the time of preparation of the hemostatic agent.

Results:

Mean blood loss in groups IIA, IIB and III was 0.002 grams (g), 0.008 g, and 0.170 g, with standard deviation of 0.005 g, 0.005 g, and 0.424 g, respectively (P=0.069). The drying time for cyanoacrylate averaged 81.5 seconds (s) (standard deviation 51.5 seconds) and 126.1 s (standard deviation 23.0 s) for polyurethane B (P=0.046). However, there was a trend (P=0.069) for cyanoacrylate to dry more slowly than polyurethane A (mean 40.5 s; SD 8.6 s). Furthermore, polyurethane A had a shorter drying time than polyurethane B (P=0.003), mean IIA of 40.5 s (standard deviation 8.6 s). In group III, 100% of the animals had mild/severe fibrosis, while in group II only 12.5% showed this degree of fibrosis (P=0.001).

Conclusion:

Polyurethane derived from castor oil showed similar hemostatic behavior to octyl-2-cyanoacrylate. There was less perivascular tissue response with polyurethane when compared with cyanoacrylate. .
RESUMO

Objetivo:

Avaliar o comportamento hemostático e a reação tecidual do poliuretano, derivado da mamona, após injúria da aorta abdominal de cobaias e compará-lo com o 2-octil-cianoacrilato.

Métodos:

Vinte e quatro cobaias foram divididas aleatoriamente em três grupos de oito animais (I, II e III). A aorta abdominal infrarrenal foi dissecada, pinçada proximal e distalmente ao local que se procedeu à punção vascular. No grupo I (controle), a hemostasia foi feita com digitopressão; no grupo II (poliuretano), aplicou-se o selante vegetal e, no grupo III (cianoacrilato), aplicou-se o 2-octil-cianoacrilato. O grupo II foi subdividido em IIA e IIB, conforme o tempo de preparo do poliuretano.

Resultados:

A média de perda sanguínea nos grupos IIA, IIB e III foi 0,002 g, 0,008 g e 0,170 g, com desvios padrões de 0,005 g, 0,005 g e 0,424 g, respectivamente (P=0,069). O tempo de secagem do selante cianoacrilato foi em média 81,5 segundos (s) (desvio padrão 51,5 s), enquanto o poliuretano B levou 126,1 segundos (desvio padrão 23,0 s) (P=0,046). Entretanto, houve tendência (P=0,069) do cianoacrilato apresentar um tempo maior de secagem que o poliuretano A. Além disso, o poliuretano A teve um tempo de secagem menor que o poliuretano B (P=0,003), com média para o IIA de 40,5 segundos (desvio padrão 8,6 s). No grupo III, 100% dos animais tiveram fibrose moderada/acentuada, enquanto no grupo II apenas 12,5% (P=0,001).

Conclusão:

O poliuretano derivado da mamona apresentou comportamento hemostático semelhante ao 2-octil-cianoacrilato. A cola vegetal demonstrou menor reação tecidual perivascular. .
Subject(s)


Full text: Available Index: LILACS (Americas) Main subject: Primary Health Care / Coronary Disease / Depression Type of study: Controlled clinical trial / Etiology study / Incidence study / Observational study / Qualitative research / Risk factors Limits: Humans Country/Region as subject: Europa Language: English Journal: Rev. bras. cir. cardiovasc Year: 2015 Type: Article Institution/Affiliation country: Instituto do Coração de Curitiba/BR

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Full text: Available Index: LILACS (Americas) Main subject: Primary Health Care / Coronary Disease / Depression Type of study: Controlled clinical trial / Etiology study / Incidence study / Observational study / Qualitative research / Risk factors Limits: Humans Country/Region as subject: Europa Language: English Journal: Rev. bras. cir. cardiovasc Year: 2015 Type: Article Institution/Affiliation country: Instituto do Coração de Curitiba/BR