Artificial ventilation during pneumoperitoneum

Pneumoperitoneum associated with artificial ventilation.

Four adults injured in serious road-traffic accidents developed pneumoperitoneum after artificial ventilation. No case could be attributed to injury or to perforation of a hollow viscus in the belly, but doubt about this in one patient resulted in exploratory laparotomy. In three patients the origin of intraperitoneal air was considered to be leakage through minute ruptures in alveoli subjected...

Oxygen toxicity during artificial ventilation.

Repeated pulmonary collapse and changes suggestive of a severe alveolar-capillary diffusion defect were observed over a period of 20 days in a patient who was receiving artificial ventilation because of status epilepticus. Profound cyanosis followed attempts to discontinue assisted ventilation. The Bird Mark 8 respirator employed was found to be delivering approximately 90% oxygen on the air-mi...

Complications of Artificial Pneumoperitoneum

The diagnostic use of artificial pneumoperitoneum.

Artificial pneumoperitoneum is a procedure with which doctors are familiar, particularly in respect to its therapeutic application in pulmonary tuberculosis and chronic diffuse pulmonary emphysema. Diagnostic use of the procedure in lesions of or near the diaphragm is well known to chest physicians and surgeons, yet some general practitioners, surgeons and radiologists have remained hesitant to...

Ventilation-perfusion distributions and gas exchange during carbon dioxide-pneumoperitoneum in a porcine model.

BACKGROUND Carbon dioxide (CO₂)-pneumoperitoneum (PP) of 12 mm Hg increases arterial oxygenation, but it also promotes collapse of dependent lung regions. This seeming paradox prompted the present animal study on the effects of PP on ventilation-perfusion distribution (V/Q) and gas exchange. METHODS Fourteen anaesthetized pigs were studied. In seven pigs, single photon emission computed tomog...