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Aortic Stenosis: Sensitivity and Specificity

Introduction: None written.

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Tags: Cardiac Problem Valvular Lesion Tag this Diagnosis.

The sensitivity and specificity of findings for Aortic Stenosis are listed below. See the left navigation bar to change the display.

Pre-Test Probability (Prevalence): %.	Post-Test Probability (Predictive Value): %.	Switch to display mode.
Note that calculating probabilities from more than one** finding is inherently inaccurate because findings are not independent. (For example, using two positive findings that share a common pathogenesis is likely to overestimate the true probability.)

Sensitive and Specific Findings
Finding	Result	Sensitivity	Specificity
[ + ] Brachioradial Delay	+ 0 -	100%	85%
Study: JAMA. 1997;277(7):564-571. http://jama.ama-assn.org/cgi/reprint/277/7/564

Specific Findings
Finding	Result	Sensitivity	Specificity
[ + ] Pulsus Tardus	+ 0 -	38%	100%
slow rise of carotid pulse. Other studies in the meta-analysis gave +LR 2.8 -LR 0.18, 6.4 and .73. This study had grade "A" quality. Study: JAMA. 1997;277(7):564-571. http://jama.ama-assn.org/cgi/reprint/277/7/564
[ + ] Late-Peaking Systolic Murmur	+ 0 -	69%	99%
Study: JAMA. 1997;277(7):564-571. http://jama.ama-assn.org/cgi/reprint/277/7/564
[ + ] Decreased S2	+ 0 -	56%	99%
Study: JAMA. 1997;277(7):564-571. http://jama.ama-assn.org/cgi/reprint/277/7/564

Poorly Diagnostic Findings
Finding	Result	Sensitivity	Specificity
[ + ] Decreased S2	+ 0 -	72%	77%
Study: JAMA. 1997;277(7):564-571. http://jama.ama-assn.org/cgi/reprint/277/7/564
[ + ] S4	+ 0 -	83%	67%
Study: JAMA. 1997;277(7):564-571. http://jama.ama-assn.org/cgi/reprint/277/7/564