Apneustic respiration (
a.k.a.
Aka, AKA or a.k.a. may refer to:
* "Also known as", used to introduce an alternative name
Languages
* Aka language (Sudan)
* Aka language, in the Central African Republic
* Hruso language, in India, also referred to as Aka
* a prefix in the nam ...
apneusis) is an abnormal pattern of breathing characterized by deep, gasping inspiration with a pause at full inspiration followed by a brief, insufficient release.
Presentation
Accompanying signs and symptoms may include
decerebrate posturing; fixed, dilated pupils;
coma
A coma is a deep state of prolonged unconsciousness in which a person cannot be awakened, fails to respond normally to painful stimuli, light, or sound, lacks a normal wake-sleep cycle and does not initiate voluntary actions. Coma patients exhi ...
or profound
stupor
Stupor is the lack of critical mental function and a level of consciousness, in which an affected person is almost entirely unresponsive and responds only to intense stimuli such as pain. The word derives from the Latin '' stupor'' ("numbness, inse ...
;
quadriparesis; absent
corneal reflex
The corneal reflex, also known as the blink reflex or eyelid reflex, is an involuntary blinking of the eyelids elicited by stimulation of the cornea (such as by touching or by a foreign body), though it could result from any peripheral stimulus. ...
; negative
oculocephalic reflex; and obliteration of the
gag reflex The pharyngeal reflex or gag reflex is a reflex muscular contraction of the back of the throat, evoked by touching the roof of the mouth, the back of the tongue, the area around the tonsils, the uvula, and the back of the throat. It, along with o ...
.
Causes
It is caused by damage to the
pons
The pons (from Latin , "bridge") is part of the brainstem that in humans and other bipeds lies inferior to the midbrain, superior to the medulla oblongata and anterior to the cerebellum.
The pons is also called the pons Varolii ("bridge of ...
or upper
medulla caused by strokes or trauma. Specifically, concurrent removal of input from the
vagus nerve
The vagus nerve, also known as the tenth cranial nerve, cranial nerve X, or simply CN X, is a cranial nerve that interfaces with the parasympathetic control of the heart, lungs, and digestive tract. It comprises two nerves—the left and rig ...
and the
pneumotaxic center
The respiratory center is located in the medulla oblongata and pons, in the brainstem. The respiratory center is made up of three major respiratory groups of neurons, two in the medulla and one in the pons. In the medulla they are the dorsal res ...
causes this pattern of breathing. It is an ominous sign, with a generally poor prognosis.
It can also be temporarily caused by some drugs, such as
ketamine
Ketamine is a dissociative anesthetic used medically for induction and maintenance of anesthesia. It is also used as a recreational drug. It is one of the safest anesthetics, as, in contrast with opiates, ether, and propofol, it suppresses ...
. It causes craniocerebral injury.
Diagnosis
See also
*
Apneustic center
The respiratory center is located in the medulla oblongata and pons, in the brainstem. The respiratory center is made up of three major respiratory groups of neurons, two in the medulla and one in the pons. In the medulla they are the dorsal res ...
References
{{Reflist
External links
About brain injury and functions
Breathing abnormalities
Brainstem