TY - JOUR
T1 - Tilting for perfusion
T2 - Head-up position during cardiopulmonary resuscitation improves brain flow in a porcine model of cardiac arrest
AU - Debaty, Guillaume
AU - Shin, Sang Do
AU - Metzger, Anja
AU - Kim, Taeyun
AU - Ryu, Hyun Ho
AU - Rees, Jennifer
AU - McKnite, Scott
AU - Matsuura, Timothy
AU - Lick, Michael
AU - Yannopoulos, Demetris
AU - Lurie, Keith
N1 - Publisher Copyright:
© 2014 Elsevier Ireland Ltd.
PY - 2015/2/1
Y1 - 2015/2/1
N2 - Introduction: Cerebral perfusion is compromised during cardiopulmonary resuscitation (CPR). We hypothesized that beneficial effects of gravity on the venous circulation during CPR performed in the head-up tilt (HUT) position would improve cerebral perfusion compared with supine or head-down tilt (HDT). Methods: Twenty-two pigs were sedated, intubated, anesthetized, paralyzed and placed on a tilt table. After 6. min of untreated ventricular fibrillation (VF) CPR was performed on 14 pigs for 3. min with an automated CPR device called LUCAS (L) plus an impedance threshold device (ITD), followed by 5. min of L-CPR + ITD at 0° supine, 5. min at 30° HUT, and then 5. min at 30° HDT. Microspheres were used to measure organ blood flow in 8 pigs. L-CPR + ITD was performed on 8 additional pigs at 0°, 20°, 30°, 40°, and 50° HUT. Results: Coronary perfusion pressure was 19 ± 2mmHg at 0° vs. 30 ± 3 at 30° HUT (p<0.001) and 10 ± 3 at 30° HDT (p<0.001). Cerebral perfusion pressure was 19 ± 3 at 0° vs. 35 ± 3 at 30° HUT (p<0.001) and 4 ± 4 at 30° HDT (p<0.001). Brain-blood flow was 0.19 ± 0.04 ml min-1g-1 at 0° vs. 0.27 ± 0.04 at 30° HUT (p=0.01) and 0.14 ± 0.06 at 30° HDT (p=0.16). Heart blood flow was not significantly different between interventions. With 0, 10, 20, 30, 40 and 50° HUT, ICP values were 21 ± 2, 16 ± 2, 10 ± 2, 5 ± 2, 0 ± 2, -5 ± 2 respectively, (p<0.001), CerPP increased linearly (p=0.001), and CPP remained constant. Conclusion: During CPR, HDT decreased brain flow whereas HUT significantly lowered ICP and improved cerebral perfusion. Further studies are warranted to explore this new resuscitation concept.
AB - Introduction: Cerebral perfusion is compromised during cardiopulmonary resuscitation (CPR). We hypothesized that beneficial effects of gravity on the venous circulation during CPR performed in the head-up tilt (HUT) position would improve cerebral perfusion compared with supine or head-down tilt (HDT). Methods: Twenty-two pigs were sedated, intubated, anesthetized, paralyzed and placed on a tilt table. After 6. min of untreated ventricular fibrillation (VF) CPR was performed on 14 pigs for 3. min with an automated CPR device called LUCAS (L) plus an impedance threshold device (ITD), followed by 5. min of L-CPR + ITD at 0° supine, 5. min at 30° HUT, and then 5. min at 30° HDT. Microspheres were used to measure organ blood flow in 8 pigs. L-CPR + ITD was performed on 8 additional pigs at 0°, 20°, 30°, 40°, and 50° HUT. Results: Coronary perfusion pressure was 19 ± 2mmHg at 0° vs. 30 ± 3 at 30° HUT (p<0.001) and 10 ± 3 at 30° HDT (p<0.001). Cerebral perfusion pressure was 19 ± 3 at 0° vs. 35 ± 3 at 30° HUT (p<0.001) and 4 ± 4 at 30° HDT (p<0.001). Brain-blood flow was 0.19 ± 0.04 ml min-1g-1 at 0° vs. 0.27 ± 0.04 at 30° HUT (p=0.01) and 0.14 ± 0.06 at 30° HDT (p=0.16). Heart blood flow was not significantly different between interventions. With 0, 10, 20, 30, 40 and 50° HUT, ICP values were 21 ± 2, 16 ± 2, 10 ± 2, 5 ± 2, 0 ± 2, -5 ± 2 respectively, (p<0.001), CerPP increased linearly (p=0.001), and CPP remained constant. Conclusion: During CPR, HDT decreased brain flow whereas HUT significantly lowered ICP and improved cerebral perfusion. Further studies are warranted to explore this new resuscitation concept.
KW - Cardiac arrest
KW - Cardiopulmonary resuscitation
KW - Cerebral perfusion
KW - Impedance threshold device
KW - Mechanical CPR
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U2 - 10.1016/j.resuscitation.2014.11.019
DO - 10.1016/j.resuscitation.2014.11.019
M3 - Article
C2 - 25447353
AN - SCOPUS:84920913193
SN - 0300-9572
VL - 87
SP - 38
EP - 43
JO - Resuscitation
JF - Resuscitation
ER -