Repercussões respiratórias do pneumoperitônio induzido em suínos

Ovário-histerectomia laparoscópica em felinos hígidos: estudo comparativo de três métodos de hemostasia

Foram avaliadas 24 gatas, hígidas, sem raça definida, distribuídas em três grupos de oito animais. Descreveu-se o acesso laparoscópico para ovariossalpingo-histerectomia (OSH) e comparou-se o uso do eletrocautério bipolar (grupo I), do clipe de titânio (grupo II) e da ligadura com fio de sutura (grupo III) para a oclusão dos vasos ovarianos e uterinos. Hemorragia e enfisema subcutâneo foram as principais complicações observadas no transoperatório e hematoma subcutâneo e deiscência de sutura, as do pós-operatório. O procedimento cirúrgico e a técnica operatória mostraram-se viáveis nos três grupos. O uso do eletrocautério bipolar apresentou vantagens na comparação com os outros métodos de hemostasia.

Effects of pneumoperitoneum on the amplitude of diaphragmatic excursion in pigs

OBJECTIVE

To study the effects that pneumoperitoneum achieved through carbon dioxide insufflation has on diaphragmatic excursion in pigs.

METHODS

A total of 14 male Landrace pigs, 30 to 45 days of age and weighing five to seven kilograms each, were used. The sample was randomly and equally divided into two groups: one (n = 7) in which pneumoperitoneum was maintained at 10 mmHg for 60 minutes; and another (n = 7) in which pneumoperitoneum was maintained at 15 mmHg (also for 60 minutes). After anesthetic induction, the animals were intubated. Flow volume was monitored, and the amplitude of diaphragmatic excursion was analyzed using noninvasive ultrasound imaging of the right hemidiaphragm.

RESULTS

In both groups, restricted diaphragmatic excursion was observed only during the procedure. There was no statistical difference between the two pressure levels studied.

CONCLUSION

The amplitude of diaphragmatic excursion was restricted during abdominal insufflation, independent of the pressure level (within the 10-15 mmHg range), during the study period.