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Relationship between stridor and sleep apnoea syndrome: is it as simple as that?

¹ Service d’Explorations Fonctionnelles du Système Nerveux, Bordeaux cedex, France
² Service de Neurologie, CHU de Bordeaux, Bordeaux, France

Correspondence to:
Correspondence to:
Dr I Ghorayeb
MD, PhD, Service d’Explorations Fonctionnelles du Système Nerveux, Hôpital Pellegrin, Place Amélie Raba-Léon, 33076 Bordeaux cedex, France; imad.ghorayeb@umr5543.u-bordeaux2.fr

Keywords: stridor; sleep apnoea syndrome; multiple system atrophy

The first 150 words of the full text of this article appear below.

We read with interest the article by Hirayama et al¹ in which the authors, using an original imaging method, low field magnetic resonance fluoroscopic study, proposed that upper airway obstruction precedes laryngeal occlusion causing the stridor in patients with multiple system atrophy (MSA). This issue of nocturnal stridor in MSA is of great importance since it is a common cause of sudden death and a recognised prognostic factor in this disease.² It affects about 19% of patients as shown in our series and by others.³ We feel that the relationship proposed between obstructive apnoeic respiratory events and stridor is not as simple as suggested by the authors and must be considered in light of classical standardised polysomnographic (PSG) data.

In our own series, 18 consecutive patients with MSA were assessed for night-time disturbances by all-night standard PSG with continuous synchronised audiovisual recording. Nocturnal stridor occurred in 10 patients and, except . . . [Full text of this article]

M Hirayama³, G Sobue³, H Fukatsu⁴, Y Koike⁵

³ Department of Neurology, Nagoya University Graduate School of Medicine, Nagoya, Japan
⁴ Department of Radiology, Nagoya University Graduate School of Medicine, Nagoya, Japan
⁵ Department of Health Sciences, Nagoya University Graduate School of Medicine, Nagoya, Japan

Correspondence to:
Correspondence to:
Professor G Sobue;
sobueg@med.nagoya-u.ac.jp