Manometry

Manometry. Simple manometric methods may be used in endpoint assays, to measure the total quantity of a gas (such as NH3 or CO2) produced in an enzymatic reaction. Automated manometers may be used in a kinetic mode, to quantitate gas evolution as a function of time. These methods are based on the ideal gas law, which states that the volume occupied by a gas is directly proportional to the number of moles of the gas at constant pressure and temperature. The gas volume is thus measured as a function of time or following completion 

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More definitive diagnostic tests include endoscopy (via endoscope or Pillcam ESO capsule), 24-hour ambulatory pH monitoring, diagnostic proton pump inhibitor (PPI) administration, or esophageal manometry. 

Manometry Measurement of pressures within organs of the body. Manometry is often used to indicate muscular activity in motile tubes such as the esophagus. 

Manometry remains the gold standard test, because phasic contractions are generally lumen occlusive in small bowel and thus reliably detected by intraluminal pressure measurements. Transit tests are more convenient nevertheless, they are time-consuming and do not provide the same detailed information about contractile activity [114, 115], These methods are briefly discussed. 

Softer EE, Summers RW Ambulant manometry in Kumar D, Wingate DL (eds) An Illustrated Guide to Gastrointestinal Motility. Edinburgh, Churchill Livingstone, 1993, pp 200-210. 

Husebye E, Skar V, Aalen OO, Osnes M Digital ambulatory manometry of the small intestine in healthy adults Estimates of the variation within and between individuals and statistical management of incomplete MMC periods. Dig Dis Sci 1990,35 1057-1065. 

Quigley EM, Deprez PH, Hellstrom P, Huse-bye E, Soffer EE, Stanghellini V, et al Ambulatory intestinal manometry A consensus report on its clinical role. Dig Dis Sci 1997 42 2395-2400. 

Summers RW, Anuras S, Green J Jejunal manometry patterns in health, partial intestinal obstruction, and pseudoobstruction. Gastroenterology 1983 85 1290-1300. 

Hg manometer selected values gas saturation electronic manometry ... 

C, franx-decalin, manometry, measured range -30.0 to 235.3°C, Seyer Mann 1945)... 

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