Studies in blood-pressure : physiological and clinical . ay be selected as the bestadapted to the individual extensibility of the wrist,which varies in different cases. Directions.—1. Extend the wrist (preferably theright one) over the wrist-rest, and see that the elbowleans on the table and that all the muscles arerelaxed; raise slightly the radial side ;* put theleft hand over the upturned palm and thumb, andthus maintain the contact of the dorsum againstthe wrist-rest and prevent the thumb from beingextended; and place the pad of the left indexringer over the radial artery, so as to close t
Studies in blood-pressure : physiological and clinical . ay be selected as the bestadapted to the individual extensibility of the wrist,which varies in different cases. Directions.—1. Extend the wrist (preferably theright one) over the wrist-rest, and see that the elbowleans on the table and that all the muscles arerelaxed; raise slightly the radial side ;* put theleft hand over the upturned palm and thumb, andthus maintain the contact of the dorsum againstthe wrist-rest and prevent the thumb from beingextended; and place the pad of the left indexringer over the radial artery, so as to close the vesseland exclude a reflux beat that may be present,when the tip only will perceive the direct artery and the adjacent structures are thusrendered slightly tense and at rest—conditionswhich are necessary to definite observation. 2. Examine the bed of the artery with the finger 1 This direction is of special importance in taking the radialcalibre in the recumbent posture ; for then the patient is very aptto evert the supine Fig. 7.—Mode of using the Arteriometer, thiwrist being extended on a wrist-rest. To face page 210. ON ARTERIOMETRY 211 or the blunt end of a pencil, test the closing of it,and select the best site for the observation. Ifthis should not happen to be in a line with theprominent part of the styloid process, which formsa good general landmark for this observation,stain the site with a dermographic pencil. 3. Hold the arteriometer between the indexfinger and the thumb of the right hand, and plantthe foot-rests, one on the styloid process and theother on the flexor tendons, rendered tense by theextension of the wrist, and adjust the pad care-fully over the site of the artery. It is importantthat the observer should see that the inner foot-rest is well supported by the tendons, and if theseare not felt to be firm enough the wrist should besomewhat further extended. The instrumentshould be held, throughout the observation, per-pendicu
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Keywords: ., bookcentury1900, bookdecade1910, bookid, booksubjectbloodpressure
