TNO Finger Pressure Reference Guide - Integral Process
TNO Finger Pressure Reference Guide - Integral Process
TNO Finger Pressure Reference Guide - Integral Process
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<strong>TNO</strong> <strong>Finger</strong> <strong>Pressure</strong> <strong>Reference</strong> <strong>Guide</strong> 16is too high. The shape of the plethysmogram of course also depends on thestate of the artery, and the smooth muscle tone see also Figure 2.4. Therefore,the interpretation ‘too sharp’ and ‘too flat’ always has to be verified byanalyzing the plethysmogram at one or more other pressure levels200Intra-arterial pressure150100500<strong>Finger</strong> arterial pressureCuff pressureTime300Plethysmogram (a.u.)250200150100500Figure 2.6 <strong>Finger</strong> plethysmogram at five cuff pressure levels2.7 Example of a normal PhysiocalDuring a normal Physiocal the blood pressure measurement is interruptedimmediately after the detection of the systolic phase of the heart beat. The firstpressure level is located between diastolic and systolic finger arterial pressure. Theshape and amplitude of the plethysmogram are analyzed and also compared withprevious Physiocal periods. If the end-diastolic phase of the plethysmogram has the
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