Endocrine, Head, and Neck Flashcards
Which vein CROSSES THE MIDLINE overlying the proximal trachea and is at risk in a tracheotomy?
anterior jugular vein
What is the innervation of the lower lip?
The cervical branch of the facial nerve through the marginal mandibular branch. Ipsilateral dysfunction (since no cross innervation)
Where is the phrenic nerve–the only part of the cervical plexus not sacrificed in radical nerve dissection–located?
superficial to the anterior scalene. Phrenic nerve can be damaged in this procedure
Trumpet player complains of sudden onset nonproductive cough and hoarseness of voice:
prolapse of mucosa overlying the true vocal cords (ventricle of Morgagni)=supraglottic prolapse. Treatment is surgical excision of the tissue via direct laryngoscopy. Occurs in people who routinely elevate the pressure in their pharynx and chest.
What may cause sudden onset hoarseness of voice in a person who strains their voice (lecturers etc)?
spasmodic dysphonia. ***Fluctuation with normal speech can occur. Temporary improvement with botox
Difficulty breathing after being held in chokehold:
unilateral vocal cord paralysis due to compression of the recurrent laryngeal nerve with compression of the cricothyoid joint
Dysphagia and aspiration can occur following injury to the ___________ nerve, which provides sensory innervation to the larynx.
internal branch of the superior laryngeal
What is Warthin’s tumor?
papillary cystadenoma lymphomatosum. Epithelial component interspersed with lymphoid tissue showing germinal centers. More common in men. Benign (?); second most common tumor of the parotid gland (following pleiomorphic adenomas)
What is the most common cause of primary mediastinal tumors?
neurogenic tumors (followed, in frequency, by thymoma, congenital cysts, lymphoma)
The thymus gland arises from which branchial arches?
3rd and 4th
It is the (absence/presence) of calcium that is more indicative of malignancy.
absence! <–really
What is a bronchopulmonary sequestration? Where in the lung would you think about it?
A pulmonary sequestration (also known as a bronchopulmonary sequestration or cystic lung lesion), is a piece of tissue that ultimately develops into lung tissue that is not attached to the pulmonary arterial blood supply. Remains sequestered and does not contribute to breathing. It has a separate arterial supply
Posterior aspect of inferior lobe of lung
What are the structures most likely to be affected initially when an apical tumor penetrates out of the thoracic inlet?
The first thoracic nerve and the lower trunk of the brachial plexus
When a lung tumor has expanded to the chest wall or has metastasized, how is it treated?
Radiotherapy first, before resection.
In small cell, combo chemo, THEN radiotherapy, then resection.
Patients with an FEV < _____ or a FVC < ______ are unlikely to tolerate a pneumonectomy well.
Neither are patients with maximal voluntary ventilation under ___%
FEV <50%
Metastatic lung cancer tends to be in the (upper/lower) lungs.
Lower
The presence of multiple lesions on CXR should alert the physician to which diagnoses?
1) AV fistulas
2) metastatic lung cancer
What is the treatment for a single AV fistula? For multiple AV fistulas?
single: resection
multiple: therapeutic embolization
Treatment of ARDS features PEEP and the smallest FiO2 to keep oxygen over 60 along with what kind of tidal volumes?
smaller (5-7) to avoid volutrauma