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Biomedical subjects

A Bardeen-Henschel

Publications and source records attributed to A Bardeen-Henschel.

4 recordsLinked to original sources
PubMed1991

Capnography for detection of endobronchial migration of an endotracheal tube.

A patient is described in whom migration of an endotracheal tube into the right main bronchus was suspected when end-tidal carbon dioxide suddenly decreased from 28 to 22 mm Hg. Acute changes with migration of the endotracheal tube into the main bronchus were also studied in an animal experimental model. End-tidal carbon dioxide decreased and tracheal (inflation) pressure increased, with no change in tidal volume. Arterial blood gases showed time-dependent decreases in pH and oxygen tension and an increase in carbon dioxide tension.

Aged↗
PubMed1987

Mass spectrometer failure: an unusual cause.

A potentially serious problem is inherent in the current design of the mass spectrometer multiplex system. In spite of the filter on the sampling tube, foreign material can be aspirated into this tube, causing malfunction of the system. Prevention of this problem is discussed, and precautions are given.

Anesthesia, General↗
PubMed1986

Recognition of mixed anesthetic agents by mass spectrometer during anesthesia.

Anesthetic agents are sometimes added to the wrong vaporizer on an anesthesia machine. As a result, the vaporizer may deliver a mixture of anesthetic agents at concentrations inappropriate for use on a patient. However, untoward clinical complications related to vaporizers can be prevented with a time-shared mass spectrometer. This device accurately and rapidly indicates the gases and gas concentrations present in a vaporizer.

Anesthesia, General↗