torr

(redirected from mm Hg)
Also found in: Dictionary, Thesaurus, Medical, Wikipedia.

torr

a unit of pressure equal to one millimetre of mercury (133.322 newtons per square metre)

Torr

 

a subsidiary unit of pressure equal to 1/760 of an atmosphere. More precisely, a torr is equal to 101,325 newtons per m2 ÷ 760 = 133.322 newtons per m2, or 133.322 pascals. The torr was named in honor of E. Torricelli; the international symbol is Torr. An equivalent unit, the millimeter of mercury (mm Hg), is used more often in Russian scientific literature.

torr

[tȯr]
(mechanics)
A unit of pressure, equal to 1/760 atmosphere; it differs from 1 millimeter of mercury by less than one part in seven million; approximately equal to 133.3224 pascals.
References in periodicals archive ?
We felt the best evidence [to prevent future cardiovascular events] was to reduce pressure below 140/90 mm Hg, but a goal pressure of less than 130/80 mm Hg may be appropriate in some cases; we left it to the discretion of physicians to decide which blood pressure target to choose," said Dr.
Patients could not be classified as having BP that was in or out of control with 80% certainty on the basis of a single clinic SBP measurement from 120 mm Hg to 157 mm Hg," the authors state.
The investigators found that a difference of 10-15 mm Hg occurred in 12%-15% of the study subjects and was associated with peripheral vascular disease, with a low sensitivity but a very high specificity.
Tracheal PO2 150 mm Hg = (760 mm Hg - 47 mm Hg) x 0.
Stage 1 Hypertension: 140 to 159 mm Hg systolic and/or between 90 and 99 mm Hg diastolic
2] is <20 mm Hg and there is a question of probe accuracy, reliability, or validity the nurse performs a 100% [O.
0 mm Hg (P = NS) in the 26 patients in the supine position in whom there was an increase in the PVP in response to a sustained inspiratory breath and to occlusion above the intravenous site.
Elliott, from the Department of Preventive Medicine, Rush University Medical Center in Chicago found that 8-weeks of fifteen minutes/day of self-treatment using device-guided slow breathing with the RESPeRATE device resulted in an approximate 80% reduction of the white-coat effect in the treatment group compared to only an approximate 40% reduction in the control group (21/12 mm Hg reduction of office to home blood pressure difference from initial value in treatment group vs.
I and many of my colleagues believe that having a recommendation to treat to just less than 150/90 mm Hg potentially put millions of CAD patients at risk, especially at risk for stroke.
At the start of the study, the average systolic blood pressure was 149 mm Hg in the HBPM group and 145 mm Hg in the UC group.
Hypertension is defined as elevated blood pressure 140 mm Hg or greater systolic or 90 mm Hg or greater diastolic.