xRead - Olfactory Disorders (September 2023)

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504

INTERNATIONAL CONSENSUS ON OLFACTION

TABLE VIII.7 Brief screening tests that have administration times 5–20 minutes*

Normative data available

No. of odorsor items

Commercially available

Reliability coefficient

Test name and author/s Blast-Injection Test Elsberg and Levy, 1935 1146

Comments

Test type

RT

1

NR

No

No

Clinical application of test employing blast-injection of odors into the nose, with the metric being the minimum volume of odor that can be perceived This procedure disassociated the stimulus from the variability associated with idiosyncratic popular in clinical medicine Critics suggest confounding with trigeminal stimulation and other problems Nonforced choice Used mainly coffee odor as stimulus Ascending nonforced-choice RT using wide-mouth sniff bottles Reliability estimated from 98 patients tested twice at intervals ranging from less than a day to 3 weeks Duration of intervals did not impact test scores, which were higher on second test occasion Modified the blast-injection procedure of Elsberg 1146 to include the 7 primary odors suggested by Amoore 1149 into a practical clinical smell test Employed increasing volumes of at half increments until a sensation was perceived Nonforced choice Employed propylene bottles with serial dilutions of pyridine in mineral oil to asses using an ascending method of limits olfactory thresholds Later version employed linalool as a stimulus Normative date available from the manufacturer Widely used (Continues) aspects of sniffing or breathing and became

Phenyl Threshold Test Fordyce, 1961 1147

RT

1 at 8 con centra tions

Nocoeffi cient; reliabil ity;

No

No

shownas consisten cies

Olfactory

DT

7

NR

No

No

Spectrogram Douek, 1967 1148

Squeeze Bottle Olfactory

DT

1

0.70

Yes

No longer

Threshold Test

Amooreand

Ollman, 1983 1150