Definition One of the most commonly demonstrated findings in severe brain dysfunction is the appearance of "fixed and dilated" pupils. The pupillary opening becomes very large and no longer constricts when stimulated with a flashlight. Current Knowledge It is important to know that "fixed and ...
A dilated pupil can sometimes still react to light — that is, get smaller in bright light or when a light is shined at the eye. But typically, dilated eyes don’t respond normally to light. A large pupil that is completely unresponsive to light is called a "fixed" dilated pupil. Dila...
Doctors sometimes refer to more pronouncedmydriasis, when the pupils are fixed and dilated, as “blown pupil.” This condition can be a symptom of an injury to the brain from physical trauma or a stroke. The opposite of mydriasis is called miosis and is when the iris constricts to cause ...
Does fixed and dilated pupils mean brain death? They found that approximately 20% of cases of suspected brain death showed pupil diameters of <4 mm and that most (60%) were 5–6 mm in diameter. They stated thatboth pupils must be fixed and lacka light reflex and that the diameter shoul...
Argyll Robertson pupilone that is miotic and responds to accommodation effort, but not to light. fixed pupila pupil that does not react either to light or on convergence, or in accommodation. Hutchinson's pupilone that is dilated while the other is not. ...
Trauma patients with GCS 3 persisting from the scene with bilaterally fixeddilated pupilshave no appreciable chance of survival.───未见损伤时GCS持续为3伴双侧瞳孔固定散大的患者生存。 英语使用场景 En route, cardiac arrest occurred for the second time, and on arrival in theatre the patient was ...
A dilated pupil may be caused by any kind of trauma such as a damage of the nerves controlling the activities of the iris, an injury to the head or the eye, and iris sphincter. All these factors highly affect the consensual reactivity of the eyes to light and cause fixed and dilated p...
What makes your pupils stay open, or dilated? WebMD explains the causes, and what to do if you have dilated pupils.
Objectives:Systemic administration of atropine during CPR may postpone brain death determination because of its reputed ability to produce fixed and dilated pupils. We studied the effect of atropine administered in the usual doses as an adjunct to endotracheal intubation and for cardiac arrest to deter...
The patient developed fixed dilated pupils (> 8 mm) and hypothermia (27 degrees C). Thiopentone plasma concentrations were performed giving a level of 309 mumol/1; withdrawing the thiopentone infusion resulted in the pupil diameter returning to 5 mm within 24 h. A new drug plasma ...