An evaluation of exhaled flow measuring mouthpieces for breath sampling devices.

A study is conducted to determine the dimensions of an exhaled flow measuring mouthpiece for a breath-sampling device that requires breathing for an extended period of time. Fleisch, Pitot and Venturi type differential pressure based flow measuring mouthpieces of various dimensions are evaluated. Inner diameters (IDs) of the cylinder shaped Fleisch, Pitot and Venturi mouthpieces are varied from 5mm to 25mm.

Alveolar air volatile organic compound extractor for clinical breath sampling.

Alveolar air Volatile Organic Compound (VOC) extractor is a handheld breath-sampling device for clinical breath analysis. The device consists two main components: (1) An alveolar air separator, (2) A VOC extractor. The alveolar air separator splits exhaled air based on total exhaled air volume directing alveolar air towards the VOC extractor and dead space air to into an exhaust channel.

Point-of-Care device for quantification of zinc in serum.

With 42,000 cases reported annually in the United States and an approximate 10% mortality rate, [1] pediatric septic shock is a major health problem that is often difficult to treat effectively. Several studies have shown that children experiencing pediatric septic shock often have critically low levels of serum zinc (Zn), suggesting supplementation of Zn to be an effective therapeutic strategy. However, to protect the safety and well-being of the patient, it is extremely important to monitor blood serum concentration of Zn during supplementation in order to ensure that levels remain at or near the physiological norm and thus minimize the risk of heavy metal toxicity from over supplementation.