left main bronchus

(redirected from Left bronchus)

left main bron·chus

[TA] Avoid the incorrect term left main stem (or mainstem) bronchus.
primary division of the tracheobronchial tree arising as the left branch of the bifurcation of the trachea, then passing in front of the esophagus and enters the hilum of the left lung where it divides into a superior lobe bronchus and an inferior lobe bronchus. It is longer, of narrower caliber, and more nearly horizontal than the right main bronchus, hence, aspirated objects enter it less frequently.
Farlex Partner Medical Dictionary © Farlex 2012
References in periodicals archive ?
Patients with a foreign body in left bronchus and branches underwent bronchoscopy (77.8%) later than those with in the right.
After a month, the narrowed part of the oesophagus was dilated, but simultaneously the doctors detected a suspected fistulous communication between the stricture and the left bronchus (respiratory tube).
During the procedure, a suspected fistulous communication was detected between the stricture and the left bronchus (respiratory tube).
Scoring was based on a 5point probability Likert scale: (1) not probable, (2) somewhat improbable, (3) neutral, (4) somewhat probable, or (5) very probable for right bronchus, mainstem bronchus, and left bronchus. Images were viewed on our institutional PACS system and compared to ground truth.
(i) Nonvisualization of left lung parenchyma and left bronchus with cardiac border shifted ipsilaterally
As observed in our results, other authors report a smaller luminal diameter for the left bronchial arteries; however this might be because there are more artery origins for the left bronchus than the right [14, 15, 18, 23].
FB was encountered in the right bronchus in 52.1% cases, the left bronchus in 782 cases (39.1%), subglottic larynx in 148 cases (7.4%), and bilateral bronchus in 28 cases (1.4%).
They eventually intubated the left bronchus through the surgical field.10
Computed tomography of the chest revealed right lung agenesis with resultant complete dextroposition of the heart, compression of the distal trachea, and proximal left bronchus beneath the aorta (Figure 2).
Entry into the right main bronchus is more often than into left bronchus as the right bronchus is straight in line with trachea, shorter and more in diameter.
The trachea was then opened below the tumour, after which a 6.5 reinforced tube was introduced through the left bronchus to aid ventilation of the left lung.