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XXVIII.f

XXVIII - Large airway involvement including UAO

Laryngospasm (a.k.a. laryngismus)

Last update 17/06/2026

Measurement of plasma calcium, phophate, magnesium and potassium indicated. May cause asphyxia and death. See also under 'Vocal cord dysfunction/closure' (VIIIh). May associate with chest wall muscle rigidity (see also under IXc). Some patients with VCD are erroneously diagnosed with laryngospasm or vocal cord dysfunction (PMID 25841553)

Causative drugs

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Frequency - Incidence

Incidence of cardiac adverse event(s) due to the specific drug as assessed by number of reported/published cases in the literature. Red digits in stars indicate: 0 = Very rare, questionable signal · 1 = < 10 cases · 2 = 10-50 cases · 3 = 50–100 cases · 4 = 100-200 cases · 5 = >200 cases

Evidence level/grade

Evidence level for cardiac adverse event(s) due to the specific drug as estimated using Hill’s (1965), Naranjo’s (1981), and Bégaud’s (1985) criteria applied to published cases. Blue digits in stars indicate: 0 = Questionable · 1 = Low · 2 = Moderate · 3 = Robust · 4 = Definite · 5 = Unquestionable, pathognomonic