Olfactory dysfunction after

SARS-CoV-2-Infection?

Fachdienstkurs Militrund Katastrophenmedizin

(FDK MKM 2022)

07. –11. November, Kaserne Thun

Thibault Lovey, MMed

thibault.lovey@uzh.ch

Groupe de recherche Prof. Patricia Schlagenhauf

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Source: Medscape

Olfactory Nerve (CN I)

•Average length 25 to 35mm

•Special sensory nerve for smell

•Nerve cell bodies present in the

mucosa

•Generate and get replace every

3 day.

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How to test smell in clinics ?

Question

Do you smell Coffee

or Tabaco?

Screening 12 Test

Source: Burghart Messtechnik

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How to test smell in details: Threshold test

Source: Burghart Messtechnik

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How to test smell in details: Discrimination test

Source: Burghart Messtechnik

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Source: Burghart Messtechnik

How to test smell in details: Identification test

??

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Threshold-Discrimination-Identification [TDI] score

•normosmia [TDI ≥31]

•hyposmia [TDI <31]

•functional anosmia [TDI ≤16]

Source: Deuel et al.

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Persistent loss of smell

Source: Lovey et al.

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Tests for this morning's workshop: Identification test

1 Orange Brombeere Erdbeere Ananas

2 Rauch Schuhleder Klebstoff Gras

3 Honig Vanille Schokolade Zimt

4 Schnittlauch Pfefferminz Fichte Zwiebel

5 Kokos Banane Walnuss Kirsche

6 Pfirsich Apfel Zitrone Grapefruit

7 Lakritz Gummibärchen Kaugummi Kekse

8 Senf Gummi Menthol Terpentin

9 Zwiebel Sauerkraut Knoblauch Möhre

10 Zigarette Kaffee Wein Kerzenrauch

11 Melone Pfirsich Orange Apfel

12 Gewürznelke Pfeffer Zimt Senf

13 Birne Pflaume Pfirsich Ananas

14 Kamille Himbeere Rose Kirsche

15 Anis Rum Honig Fichte

16 Brot Fisch Käse Schinken

Source: Burghart Messtechnik

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Tests for this morning's workshop: Taste Strips

Probe süss sauer salzig bitter

1D

2P

3L

4H

5G

6C

7O

8K

9F

10 B

11 J

12 N

13 A

14 E

15 I

16 M

süss = sweet, sucré, dolce

sauer = sour, acide, acido

bitter = bitter, amer, amaro

salzig = salty, salé, salato

Source: Burghart

Messtechnik

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Tests for this morning's workshop: Rotation

Source: Biorender

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Solution

1 = orange

9 = garlic

2 = shoe leather

10 = coffee

3 = cinnamon

11 = apple

4 = peppermint

12 = cloves

5 = banana

13 = pineapple

6 = lemon

14 = rose

7 = liquorice

15 = anis

8 = turpentine

16 = fish

Within the box (take picture)

Identification

Taste

•The olfactory nerve is special (CN I)

•There are special tests to test the sense of

smell.

•Covid impairs the sense of smell with a loss

that lasts an average of 6 weeks.

•It appears to impair the ability to discriminate

odors.

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Merci Thun!