Comparison of subjective olfaction ratings in patients with and without olfactory disorders

Haxel, Boris; Bertz-Duffy, S; Fruth, Kai; Letzel, Stephan; Mann, Wolf J.; Muttray, Axel

doi:10.1017/s002221511200076x

Cited by 45 publications

(41 citation statements)

References 16 publications

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“…There are several objective tests of olfactory function, including the University of Pennsylvania Smell Identification Test (UPSIT), which is one of the most widely utilized methods for assessing olfactory function in both clinical and research settings . It is important that a validated test be used to measure olfactory function as self‐assessment of olfaction has been shown to be unreliable …”

Section: Introductionsupporting

confidence: 81%

The utility of magnetic resonance imaging in the diagnostic evaluation of idiopathic olfactory loss

2013

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Section: Introductionsupporting

confidence: 81%

The utility of magnetic resonance imaging in the diagnostic evaluation of idiopathic olfactory loss

2013

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“…Interestingly, self-judgement of taste was significantly associated with energy intake, but self-judgement of smell was not, while smell function is generally recognized as an important factor for food intake [24]. We must consider that humans are generally not well able to rate their own smell sensitivity [25]. Therefore, we cannot exclude that reduced smell function influences energy intake.…”

Section: Discussionmentioning

confidence: 99%

Differences in dietary intake during chemotherapy in breast cancer patients compared to women without cancer

Vries

Berg

Vries

et al. 2017

Support Care Cancer

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PurposeBreast cancer patients receiving chemotherapy often experience symptoms such as nausea, vomiting and loss of appetite that potentially affect dietary habits. This study assessed the intake of energy, macronutrients and food groups before and during chemotherapy in breast cancer patients compared with women without cancer, and determined the association between symptoms and energy and macronutrient intake.MethodsThis study included 117 newly diagnosed breast cancer patients scheduled for chemotherapy and 88 women without cancer. Habitual intake before chemotherapy was assessed with a food frequency questionnaire. Two 24-h dietary recalls were completed on random days for each participant during the whole chemotherapy treatment for patients and within 6 months after recruitment for women without cancer. Shortly, after the dietary recall, participants filled out questionnaires on symptoms.ResultsBefore chemotherapy, habitual energy and macronutrient intake was similar for breast cancer patients and women without cancer. During chemotherapy, breast cancer patients reported a significantly lower total energy, fat, protein and alcohol intake than women without cancer, as shown by a lower intake of pastry and biscuits, cheese, legumes and meat products. A decline in subjective taste perception, appetite and hunger and experiencing a dry mouth, difficulty chewing, lack of energy and nausea were associated with a lower energy intake.ConclusionsSymptoms induced by chemotherapy are associated with lower dietary intake and manifested by a lower intake of specific food groups. To ensure an optimal dietary intake during chemotherapy, it is important to monitor nutritional status and symptom burden during chemotherapy in breast cancer patients.Electronic supplementary materialThe online version of this article (doi:10.1007/s00520-017-3668-x) contains supplementary material, which is available to authorized users.

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“…Relying on self‐assessment tools in patients with CRS‐linked olfactory impairment (by only asking about improvement or using visual analogue scales) does not seem sufficient. Self‐assessment does not always correlate with the results of psychophysical tests …”

Section: Introductionmentioning

confidence: 99%

Recovery of olfaction after sinus surgery for chronic rhinosinusitis: A review

Haxel

2019

The Laryngoscope

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Objective Investigation of the postoperative olfactory function after sinus surgery for chronic rhinosinusitis (CRS) with and without polyps in a review. Data Sources PubMed. Review Methods A comprehensive literature search was conducted through June 2018 using relevant keywords. The titles/abstracts were reviewed to identify studies evaluating the sense of smell in CRS‐patients pre‐ and postoperatively by either using the whole or parts of the University of Pennsylvania Smell Identification Test or the Sniffin’ Sticks test. Study characteristics and outcome data of the included studies were extracted. Results In total, 106 studies were retrieved. Twenty‐four studies comprising 1,956 patients were included after quality assessment. The number of patients investigated per study was 19 to 206. In the 24 studies, 959 patients with nasal polyps and 516 without nasal polyps were described. The follow‐up times varied between 0.5 and 28 months. Twenty‐three studies reported an improved sense of smell, at least in certain subgroups. An overall improvement was seen in approximately 50% of the included patients. Nasal polyposis and preoperative anosmia were associated with a higher chance of improvement in olfaction. In those studies that commented on deterioration after sinus surgery, a decrease in olfaction was found in a range from 0% to 10% of cases. Conclusion Olfaction can be improved by sinus surgery in about every second patient, especially if the patient had chronic rhinosinusitis with polyps, was anosmic, and had no prior surgery. A deterioration of sense of smell after surgery is rare. Laryngoscope, 129:1053–1059, 2019

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Comparison of subjective olfaction ratings in patients with and without olfactory disorders

Abstract: Self-assessment of olfaction is only a reliable indicator in smell-impaired patients, not in healthy controls. For an accurate assessment of olfaction, reliable, standardised tests are needed.

Cited by 45 publications

References 16 publications

The utility of magnetic resonance imaging in the diagnostic evaluation of idiopathic olfactory loss

The utility of magnetic resonance imaging in the diagnostic evaluation of idiopathic olfactory loss

Differences in dietary intake during chemotherapy in breast cancer patients compared to women without cancer

Recovery of olfaction after sinus surgery for chronic rhinosinusitis: A review

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