sigh

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sigh

 [si]
1. a long, audible exhalation.
2. an intermittent inflation of the lungs with a large volume from a mechanical ventilator; this is essentially a deep breath that is incorporated into the ventilation cycle. The use of large tidal volumes has replaced the use of the sigh in many settings.

sigh

(),
1. An audible inspiration and expiration under the influence of some emotion.
2. To perform such an act.
[A.S. sīcan]

sigh

sigh

Respiratory medicine
A breath occurring at regular (predictable) intervals, possibly in response to a slow decrease in lung compliance, which is seen when constant ventilation is maintained; sighs tend to be followed by smaller than normal breaths.
 
Vox populi
A deep exhalation of breath, typically with an overtone of sadness or wistfulness.

sigh

Augmented breath Pulmonology A breath occurring at regular–predictable intervals, possibly in response to the slow ↓ in lung compliance seen when constant ventilation is maintained; sighs tend to be followed by smaller than normal breaths. Cf Noisy breathing.

sigh

()
1. An audible inspiration and expiration under the influence of some emotion.
2. To perform such an act.
[A.S. sīcan]

sigh (sī),

n an audible and prolonged inspiration followed by a shortened expiration.

sigh

complementary breathing cycles characterized by a quick, deep inspiration followed by a slower expiration; probably a compensatory mechanism to counter poor ventilation.
References in periodicals archive ?
I sighed heavily, putting my head against the snare and feeling the cold steel rim against my skin.
I, too, sighed, contemplating tomorrow's view from the woods.
Some of the people asked to leave were our sponsors and press who arrived late," he sighed.
Some time earlier a gang was caught by police and we sighed a sigh of relief.
I'm carpooling with a friend of mine now,'' he sighed.
He sighed a deep sigh I'll never forget and said, "I wish they'd write a book called "Life Made Simple