The square root of the variance is the standard deviation (SD or σ), which helps determine the consistency of an investment’s returns over time. Variance is a measurement of the spread between ...

A total of 11 patients (78.6%) were supported by extracorporeal membrane oxygenation (ECMO) in LTx, whereas 8 patients (57.1%) removed the tracheal tube on the first day after LTx. Intensive care unit ...

A 58-year-old man from Haikou, China, discovered a cockroach lodged in his trachea after experiencing an unusual stale odor and coughing up yellow sputum. A chest CT scan and bronchoscopy confirmed ...

The trachea (also called the windpipe) is the large tube that brings air from the nasal passages, throat, and larynx (the upper respiratory tract) to the two large airways that branch off into each ...