apnea testing

the purpose of this report is to provide an overview of apnea testing and discuss issues related to the administration and safety of the procedure. the cause of brain death itself is variable, and can be a result of traumatic events or numerous medical conditions. the decision to withdraw cardiorespiratory life support based on the concept of brain death may be difficult for many caregivers and family members. the outcome of an apnea testing is very straightforward.




they concluded with a recommendation that all guidelines for the determination of brain death contain detailed instructions regarding the safe performance of apnea testing, ensuring adequate oxygenation and the prevention of inadvertent pneumothorax. there are modifications of the apneic oxygenation method that serve to refine and streamline apnea testing. due to the very nature of the clinical condition of the patient, apnea testing is most likely performed in a critical care area where monitoring and close patient supervision are provided. the safety and reliability of apnea testing are common themes when reviewing available literature.

in those situations when the apnea test is terminated by the examiner for some reason or when it is impossible to carry it out in a patient due to the presence of some pathologic condition, alternative ancillary tests should be used to confirm bd. most authors are of the opinion that this test should not be begun when the body temperature is below 32°c. it is important to ensure that the arterial pco2 or paco2 is normal or above 40 mmhg.23 certain authors recomm end a starting paco2 of 36 mmhg or higher.

on the other hand, if respiratory movements are detected, the at is classified as negative (i.e., not supportive of a bd diagnosis), the patient should be reconnected to the respirator. considered this method to be particularly useful in cases where there is minimal rise in paco2 or when blood oxygenation is hampered by pulmonary problems. [24] most authors are of the opinion that in spite of the potential complications, the at is safe when performed after appropriate oxygen-diffusion procedures. in those situations when it is aborted by the examiner for some reason or when it is impossible to apply the test in a patient due to certain pathologic conditions, alternative ancillary tests should be used to confirm bd.

apnea testing is an essential component in the clinical determination of brain death. the main objective of apnea testing is to prove the the apnea test is a mandatory examination for determining brain death (bd), because it provides an essential sign of definitive loss of brainstem function. apnea test (at) is one of the most important examination during the diagnosis of brain death. it is usually performed at the end of each series of clinical, .

tests to detect sleep apnea include: nocturnal polysomnography. during this test, you’re hooked up to equipment that monitors your heart, lung and brain activity, breathing patterns, arm and leg movements, and blood oxygen levels while you sleep. no other tests are required if the full clinical examination, including an assessment of brain stem reflexes and an apnea test, is conclusively performed. in the modified apnea test (mat) comprises delivery of 100% oxygen through the ett and maintenance of positive end-expiratory pressure (peep) after if you have symptoms of sleep apnea, your doctor may ask you to have a sleep apnea test, called a polysomnogram (psg). this may be done in a, .

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