TY - JOUR
T1 - Resuscitation with pressors after traumatic brain injury
AU - Feinstein, Ara J.
AU - Patel, Mayur B.
AU - Sanui, Masamitsu
AU - Cohn, Stephen M.
AU - Majetschak, Matthias
AU - Proctor, Kenneth G.
PY - 2005/10/1
Y1 - 2005/10/1
N2 - BACKGROUND: The purpose of the study was to compare initial resuscitation with arginine vasopressin (AVP), phenylephrine (PE), or isotonic crystalloid fluid alone after traumatic brain injury and vasodilatory shock. STUDY DESIGN: Anesthetized, ventilated swine (n = 39, 30 ± 2 kg) underwent fluid percussion traumatic brain injury followed by hemorrhage (30 ± 2mL/kg) to a mean arterial pressure < 30mmHg, then were randomized to 1 of 5 groups to maintain mean arterial pressure > 60mmHg for 30 to 60minutes, then cerebral perfusion pressure > 60mmHg for 60 to 300minutes, either unlimited crystalloid fluid only (n = 9), arginine vasopressin + fluid (n = 9), phenylephrine + fluid (n = 9), arginine vasopressin only (n = 5), or phenylephrine only (n = 5). Heterologous transfusions were administered if hematocrit was < 13, and mannitol was administered if intracranial pressure was > 20 mmHg. Cerebrovascular reactivity was evaluated with serial CO 2 challenges. RESULTS: In all groups, physiologic variables were similar at baseline and at the end of shock. On resuscitation, all achieved mean arterial pressure and cerebral perfusion pressure goals. Brain tissue PO 2s were similar. With fluid only, more blood and mannitol were required, intracranial pressure and peak inspiratory pressure were higher, and cerebrovascular reactivity was decreased (all p < 0.05 versus pressor + fluid). With either pressor + fluid, cardiac output, heart rate, lactate, and mixed venous O2 saturation were similar to fluid only, but total fluid requirements and urine output were both reduced (p < 0.05). With either pressor only, intracranial pressure remained low, but mixed venous O 2 saturation, cardiac output, and urine output were decreased (all p < 0.05 versus other groups). CONCLUSIONS: To correct vasodilatory shock after traumatic brain injury, a resuscitation strategy that combined either phenylephrine or arginine vasopressin plus crystalloid was superior to either fluid alone or pressor alone.
AB - BACKGROUND: The purpose of the study was to compare initial resuscitation with arginine vasopressin (AVP), phenylephrine (PE), or isotonic crystalloid fluid alone after traumatic brain injury and vasodilatory shock. STUDY DESIGN: Anesthetized, ventilated swine (n = 39, 30 ± 2 kg) underwent fluid percussion traumatic brain injury followed by hemorrhage (30 ± 2mL/kg) to a mean arterial pressure < 30mmHg, then were randomized to 1 of 5 groups to maintain mean arterial pressure > 60mmHg for 30 to 60minutes, then cerebral perfusion pressure > 60mmHg for 60 to 300minutes, either unlimited crystalloid fluid only (n = 9), arginine vasopressin + fluid (n = 9), phenylephrine + fluid (n = 9), arginine vasopressin only (n = 5), or phenylephrine only (n = 5). Heterologous transfusions were administered if hematocrit was < 13, and mannitol was administered if intracranial pressure was > 20 mmHg. Cerebrovascular reactivity was evaluated with serial CO 2 challenges. RESULTS: In all groups, physiologic variables were similar at baseline and at the end of shock. On resuscitation, all achieved mean arterial pressure and cerebral perfusion pressure goals. Brain tissue PO 2s were similar. With fluid only, more blood and mannitol were required, intracranial pressure and peak inspiratory pressure were higher, and cerebrovascular reactivity was decreased (all p < 0.05 versus pressor + fluid). With either pressor + fluid, cardiac output, heart rate, lactate, and mixed venous O2 saturation were similar to fluid only, but total fluid requirements and urine output were both reduced (p < 0.05). With either pressor only, intracranial pressure remained low, but mixed venous O 2 saturation, cardiac output, and urine output were decreased (all p < 0.05 versus other groups). CONCLUSIONS: To correct vasodilatory shock after traumatic brain injury, a resuscitation strategy that combined either phenylephrine or arginine vasopressin plus crystalloid was superior to either fluid alone or pressor alone.
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U2 - 10.1016/j.jamcollsurg.2005.05.031
DO - 10.1016/j.jamcollsurg.2005.05.031
M3 - Article
C2 - 16183491
AN - SCOPUS:25844472291
VL - 201
SP - 536
EP - 545
JO - Journal of the American College of Surgeons
JF - Journal of the American College of Surgeons
SN - 1072-7515
IS - 4
ER -