Journal of Neurology Research, ISSN 1923-2845 print, 1923-2853 online, Open Access
Article copyright, the authors; Journal compilation copyright, J Neurol Res and Elmer Press Inc
Journal website https://www.neurores.org

Original Article

Volume 11, Number 1-2, April 2021, pages 14-19

Apnea Test Safety in Brain Death: A Single-Center Retrospective Cohort Analysis

Figures

Figure 1.
Figure 1. Flowchart of protocols.
Figure 2.
Figure 2. Variables (pH, HCO3, PaCO2, PaO2, and SatO2) distribution in each phase of the first apnea test. Unit: PaO2 (mm Hg), PaCO2 (mmHg), HCO3 (mEq/L), SatO2 (%).
Figure 3.
Figure 3. Variables (pH, HCO3, PaCO2, PaO2, and SatO2) distribution in each phase of the second apnea test. Unit: PaO2 (mm Hg), PaCO2 (mmHg), HCO3 (mEq/L), SatO2 (%).

Table

Table 1. Population Characteristics
 
CharacteristicsN = 87
AT: apnea test; SD: standard deviation; ICU: intensive care unit; SOFA: sequential organ failure assessment; APACHE: acute physiology and chronic health evaluation; SAPS: simplified acute physiology score.
Age, years
  Mean42
  SD16
Sex, n (%)
  Male57 (66%)
  Female30 (34%)
Coma etiology, n
  Traumatic brain injury38
  Hemorrhagic stroke20
  Brain aneurysm10
  Brain tumor9
  Ischemic stroke7
  Anoxic encephalopathy2
  Sepsis1
Sodium (before AT), mEq/L
  Mean154
  SD13
Hemoglobin, mg/dL
  Mean10
  SD2
Duration of 1st AT, min
  Mean11
  SD2
Duration of 2nd AT, min
  Mean11
  SD2
BD protocol duration, h
  Mean15
  SD8
Use of vasoactive drugs, n (%)
  Yes87 (100%)
ICU admission SOFA
  Mean8
  SD4
ICU admission APACHE II
  Mean20
  SD7
ICU admission SAPS 3
  Mean54
  SD15