. Medical diagnosis for the student and practitioner. stated above. A pulse pressurewhich falls below 25 or exceeds 60is almost certainly pathologic. Diastolic readings run normallyabout 25 to 40 below the systolic;in low tension, varying from 50 to80 mm.; and in aortic regurgitation; 150 mm. or more. An excessivelyrapid, persistently irregular orunequal pulse makes palpatorydiastolic pressure determinationimpossible. In every case the arm bandshould be closely adjusted, the armsupported at the heart level and thesame position taken for a series oftests. The limit of error in calcareousarterie
. Medical diagnosis for the student and practitioner. stated above. A pulse pressurewhich falls below 25 or exceeds 60is almost certainly pathologic. Diastolic readings run normallyabout 25 to 40 below the systolic;in low tension, varying from 50 to80 mm.; and in aortic regurgitation; 150 mm. or more. An excessivelyrapid, persistently irregular orunequal pulse makes palpatorydiastolic pressure determinationimpossible. In every case the arm bandshould be closely adjusted, the armsupported at the heart level and thesame position taken for a series oftests. The limit of error in calcareousarteries is but 10 or even e is negligible or easily esti-mated. The same figures respec-tively represent the difference between females and males and the standingand sitting posture. The limits of error in respect to the state of contraction or relaxation ofthe arterial wall itself are probably considerable and quite beyond accuratedetermination. Muscular movement and the presence of edema alike introduce a variableelement of misinterpretation. An
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectdiagnos, bookyear1922
