[2 simple methods for insertion of tracheal tubes and gastric probes by the nasal route].
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The Esophageal Obturator Airway, a device designed for use in the management of cardiopulmonary arrest, obstructs the esophagus while simultaneously ventilating the lungs. The EOA was clinically tested in 29,000 patients with a low incidence of false entries and complications. Physiological studies indicated that vital capacity, blood gases, and pH were comparable to those obtained with the use of the endotracheal tube. Furthermore, the insertion of the EOA was more rapid (mean 6 sec vs 20 sec), more accurate (98 percent vs 48 percent), and easier to teach to paramedical personnel. It was concluded that whenever optimal conditions for endotracheal intubation are unavailable, the EOA should be first choice in the management of the airway in aneflexic, apneic patients. Specific contraindications are listed.
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Different devices are seen on chest roentgenograms everyday. The gamut of metallic density shadows include sutures, surgical clips, staples, cardiac valve prosthesis, wires, and plates. Tubes and catheters are recognized when metallic wires or barium are incorporated in their walls. The number of devices is ever growing and with them complications grow. The radiologist may be the first to detect these complications. This article endeavors to review briefly a small number of these devices and their complications. References are provided for the avid reader.
Radiology in the acute care setting has become intimately related to evaluation of the integrity and correct placement of catheters, tubes, and wires in the chest. Radiographic findings of these entities and their related complications are reviewed in this article, and common and uncommon examples and illustrations from the innumerable variations of compromise are presented.
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