[Nocturnal hypoxemia after abdominal surgery: associated factors and usefulness of oxygen therapy].

Background: Postoperative nocturnal hypoxemia (PONH) is a main factor in the genesis of respiratory, cardiac and neurologic complications after surgery.

Aim: To describe the phenomenon of PONH after elective laparoscopy and laparotomy, and to evaluate the usefulness of oxygen therapy in its prevention.

Patients And Methods: Fifteen elective patients (6 M, 9 F, 51 +/- 8 years old) scheduled for laparotomy (n = 8) or laparoscopy (n = 7) were studied.

[Intraoperative monitoring of gastric intramucosal pH].

Background: Gastric mucosal pH may be a good indicator of splanchnic tissue oxygenation.

Aim: To study the effects of abdominal surgical procedures on gastric mucosal pH.

Patients And Methods: Eighteen patients subjected to abdominal surgery were studied.

[Bacterial translocation in a model of small intestine autotransplant in dogs].

Background: Sepsis is the commonest complication of small bowel transplantation. These infections are presumably caused by bacterial translocation, due to splanchnic ischemia.

Aim: To study bacterial translocation in the immediate postoperative period after a small bowel transplantation in dogs and to relate it to splanchnic ischemia.

[Trichomonas vaginalis infection in pregnant women and newborn infants].

We studied 149 pregnant women at delivery and 113 newborns in order to determine the frequency of T vaginalis infection. Neutral red stain, dark field microscopy and culture methods were used with comparable yields. The age of women ranged from 12 to 43 years.