EVALUATION OF APNEA TEST IN BRAIN-DEAD PATIENTS

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GHARAVI MOHAMMAD; ZABIHIAN SAMIRA

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Journal: Medical Journal of Mashhad University of Medical Sciences Year:2007 | Volume:50 | Issue:97 Page(s): 295-300

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Title

EVALUATION OF APNEA TEST IN BRAIN-DEAD PATIENTS

Author(s)

GHARAVI MOHAMMAD | ZABIHIAN SAMIRA | Issue Writer Certificate

Keywords

APNEA TESTQ3

ABGQ2

BRAIN DEATHQ3

Abstract

Introduction: APNEA TESTing is mandatory to confirm BRAIN DEATH. Serious side effects such as severe cardio-pulmonary complications, ICP elevation and pneumothoraces may occur during APNEA TESTing. So, it should be performed as the last test after the other ones.However, its safety is a major issue. The aim of this study was to evaluate the results and complications of APNEA TEST in brain dead patients in the course of three years.Material and Methods: This cross sectional study was corried out from 2002 to 2005 at Mashhad University of Medical Sciences with a simple sampling method on 57 brain dead patients in whom APNEA TEST was performed by the authors. After preoxygenation the test was done in 10 minutes during which the patients had been disconnected from the ventilator. ABG analysis proceeded in minutes 2, 5, 8 and 10. The test result assumed positive if PaCO2 was increased up to 60mmHg or more than 20mmHg from baseline value. All patients should have been preoxygenated.The test stopped whenever predefined complications occurred. All the data collected in a separated questionnaire. Statistical analysis was done using SPSS software and with ANNOVA test.Results: From 57 brain dead patients in this study, 11 were female and 46 were male. The mean age of the patients was 25.28 years, ranging from 6 to 38 (SD= 14.3). Serious complications occurred in 11 patients including severe hypoxia in 10 and cardiac arrest in one. These complications were more common in patients, before testing, with an unstable cardiopulmonary condition than the ones with a stable condition (53.84% versus 9.6%). The mean period from death time to APNEA TESTing was between minimally 36 hours and maximally 11 days. It was 11 days in a patient aged 15. In all cases, the results of the tests were positive and supported by clinical diagnosis of BRAIN DEATH.Conclusion: APNEA TEST is an invasive test. It may reduces the organ reservoirs and potentially induces tissue ischemia, due to severe cardio-pulmonary complications. Also, it is not able to reject BRAIN DEATH diagnosis, if it has already been confirmed by the other tests. It seems that an alternative test with a high index of safety should be considered or some modifications are needed. At least, it is suggested to be avoided in patients with an unstable cardiopulmonary condition.

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APA: Copy

GHARAVI, MOHAMMAD, & ZABIHIAN, SAMIRA. (2007). EVALUATION OF APNEA TEST IN BRAIN-DEAD PATIENTS. MEDICAL JOURNAL OF MASHHAD UNIVERSITY OF MEDICAL SCIENCES, 50(97), 295-300. SID. https://sid.ir/paper/52325/en

Vancouver: Copy

GHARAVI MOHAMMAD, ZABIHIAN SAMIRA. EVALUATION OF APNEA TEST IN BRAIN-DEAD PATIENTS. MEDICAL JOURNAL OF MASHHAD UNIVERSITY OF MEDICAL SCIENCES[Internet]. 2007;50(97):295-300. Available from: https://sid.ir/paper/52325/en

IEEE: Copy

MOHAMMAD GHARAVI, and SAMIRA ZABIHIAN, “EVALUATION OF APNEA TEST IN BRAIN-DEAD PATIENTS,” MEDICAL JOURNAL OF MASHHAD UNIVERSITY OF MEDICAL SCIENCES, vol. 50, no. 97, pp. 295–300, 2007, [Online]. Available: https://sid.ir/paper/52325/en

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