Automated oscillometric and aneroid
sphygmomanometers are common BP measurement devices.
BP was measured three times with an aneroid
sphygmomanometer in accordance with the current NHBPEP guidelines .
There are two main types of blood pressure (BP) monitors: aneroid
(mercury) and digital, whereas there are three different types of digital blood pressure monitors in the market: arm-type, wrist-type and finger-type.
Each subject's HR and BP were measure by a heart rate monitor (Pollar RS800 HR) and a sphygmomanometer (Heine Gamma G7 Aneroid
BP was measured with a calibrated aneroid
sphygmomanometer in the supine position after five minutes rest.
Brachial artery blood pressure was measured two times with 20 min intervals with aneroid
sphygmomanometer and stethoscope (Erka Perfect Aneroid
, Germany) and mean values were used.
As the stack of aneroid
wafers expands and contracts with pressure changes, a calibrated mechanism moves the needles on its face.
The mercury barometer was largely superseded by the invention of the aneroid
barometer in 1844 (aneroid
means without fluid).
pressure gauges are not expensive and there is no good reason not to monitor Pcuffs on all intubated patients continuously, in order to maintain them in the 25-30 cm[H.sub.2]O range, and to document this at least 4-hourly.
sphygmomanometer with standardised calibrations (Hospital and Home Care; CEO197 certified) was used to measure the BP.
These events are the Korotkoff tones for aneroid
manometers (ABP), the maximal oscillations of a cuff pressure curve for oscillometric devices (OBP), and direct electronic measurement for invasive arterial blood pressure (IBP).
Since this is part of the blood pressure (BP) measurement technique when using the Riva Rocci (mercury) device or the aneroid
device, most patients are evaluated for rhythm irregularity while checking their BP, and, if pulse isn't palpated, heart rhythm can be evaluated through auscultation of KoroktofP sounds.
The needle was connected via a polyethylene tube to a three-way stopcock, which was also connected to a reservoir (syringe) containing 10mL of physiologic saline solution (Fresenius Kabi, Campinas, SP, Brazil) and to an aneroid
manometer (Missouri, Sao Paulo, SP Brazil) that was at the zero position relative to the center of the eye.