Disorders Of The Lower Cranial Nerves

Clinical examination (see page 17)

Direct examination of the vocal cords helps identification of the lesion site.

At rest

Normal

On saying 'Ee'

Normal

On saying 'Ee'

Cord paresis without tensor action

Mucous pools on affected side

• Vagus nerve lesion above the origin of the superior and recurrent laryngeal nerves.

Unilateral damage produces mild dysphagia, hoarseness and reduced vocal strength.

Bilateral damage at this level causes bilateral cord paresis. The cough is weak. Pharyngeal and palatal involvement cause marked dysphagia and nasal regurgitation. Breathlessness and stridor do not occur.

At rest

Normal

On saying 'Ee'

On saying 'Ee'

Cord paresis, -tensor action / retained

No associated pharyngeal or palatal palsy

Mucous pools on affected side

Lesion of recurrent laryngeal nerve.

Unilateral damage produces hoarseness with breathless speech and stridor.

Bilateral recurrent laryngeal nerve lesions cause stridor and breathlessness on exertion. Approximation of the vocal cords may necessitate tracheostomy.

Causes (See page 175)

Peripheral Neuropathy Natural Treatment Options

Peripheral Neuropathy Natural Treatment Options

This guide will help millions of people understand this condition so that they can take control of their lives and make informed decisions. The ebook covers information on a vast number of different types of neuropathy. In addition, it will be a useful resource for their families, caregivers, and health care providers.

Get My Free Ebook


Post a comment