PubMed Health⌕ Search

Biomedical subjects

P B Comer

Publications and source records attributed to P B Comer.

9 recordsLinked to original sources
PubMed1979

Emergency percutaneous transtracheal ventilation (PTV).

Ventilation through a percutaneous needle catheter inserted into the trachea has been advocated for resuscitation in acute upper airway obstruction. However, the customized, prefabricated equipment proposed by others for that use is not always available. We describe a device for percutaneous transtracheal ventilation (PTV) that can be rapidly assembled using available, inexpensive hospital supplies. With this device, moderate inflation pressures and flow rates of oxygen resulted in arterial PaO2 of greater than 300 torr and PaCO2 values of approximately 40 torr in dogs. PTV may be used as a life-saving measure in cases of acute upper airway obstruction when conventional airway management is unsuccessful.

Airway Obstruction↗
PubMed1976

Evaluation of catheter placement in the treatment of venous air embolism.

Venous air embolism is a potential complication of many surgical, therapeutic, and diagnostic procedures. Aspiration of air via a catheter placed in the superior vena cava or right atrium or placed in the pulmonary outflow tract and pulled through the right heart chambers had been advocated for the treatment of venous air embolism. In this study, three catheter positions were analyzed to determine which was best for removal of gas after induction of massive venous air embolism in dogs. In 18 dogs, 9 of which were suspended by their forelegs to simulate the sitting position used in posterior fossa exploration and 9 of which were supine, a Swan-Ganz catheter was placed in the right atrium, right ventricle, or pulmonary artery. A measured amount of air was injected into the left jugular vein and syringe aspiration of the air was attempted through the catheter. In the group with the catheter in the pulmonary artery, aspiration was continuous while the catheter was withdrawn through the right heart chambers. The amount of air aspirated varied widely among the three catheter positions, and no one catheter position proved superior to the other two.

Animals↗
PubMedDate not supplied

Airway maintenance in patients with long-term endotracheal intubation.

Long-term endotracheal intubation in seriously ill patients is frequently complicated by nosocomial infection of the tracheobronchial tree, especially with aerobic gram negative bacilli. A further complication is drying of pulmonary secretions unless the medical gases given are humidified. The performance characteristics of humidifying system used in spontaneously breathing, intubated patients is described. This system possesses the potential to decrease infection, provides physiologic humidification without nebulization, and, by avoiding air dilution, allows the administration of a precisely regulated FIO2.

Cross Infection↗
PubMedDate not supplied

Pulmonary angiography via an indwelling four-channel Swan-Ganz catheter.

An indwelling Swan-Ganz catheter was utilized for pulmonary angiography in an extremely ill patient without the necessity for a further invasive procedure. The procedure allowed prompt exclusion of pulmonary embolism as a cause of her deteriorating condition, and confirmed the diagnosis of adult respiratory distress syndrome (ARDS).

Adult↗