Hemoglobin-based oxygen carrying compound-201 as salvage therapy for severe neuro- and polytrauma (Injury Severity Score ≤ 27-41)

Michael Dudkiewicz, Tracey A. Harpaul, Kenneth G Proctor

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

OBJECTIVE: A prehospital trial in trauma patients has been proposed to evaluate Hemopure (hemoglobin glutamer-250 [bovine], hemoglobin-based oxygen carrying compound [HBOC]-201, Biopure). We tested the hypothesis that HBOC-201 would improve cerebrovascular resuscitation in a unique polytrauma model. DESIGN: Prospective, randomized, blinded animal study. SUBJECTS: Thirty-two anesthetized swine (42 ± 1 kg). INTERVENTIONS: Blunt trauma to the head, right chest, and bilateral femurs (Injury Severity Score ≤ 27-41) with captive bolt guns was followed by hypoventilation. Resuscitation was divided into phases to simulate conventional treatment in the prehospital, emergency room, and early intensive care unit. For 30-60 mins postinjury, 500 mL of either normal saline (control, n ≤ 14) or HBOC-201 (n ≤ 14) was administered. All received similar care thereafter. For 60-120 mins, normal saline maintained systolic arterial pressure >100 mm Hg and heart rate <100 beats/min plus mannitol (250 mg/kg) for intracranial hypertension. For 120-480 mins, phenylephrine, normal saline, and dextrose were administered to maintain cerebral perfusion pressure >70 mm Hg, filling pressure >12 mm Hg, and plasma glucose >60 mg%, respectively. Two formulations of HBOC-201 (average MW ≤ 250 kDa) were tested: one with <3% 65 kDa tetramers (n ≤ 7) and the other with <0.3% 65 kDa tetramers (n ≤ 7). MEASUREMENTS AND MAIN RESULTS: Injury severity is reflected by the death of 2 of 32 swine within 30 mins. In survivors (n ≤ 30), systolic arterial pressure was 83 ± 6 mm Hg, heart rate was 115 ± 5 beats/min, and lactate was 5.8 ± 0.4 mM. Intracranial pressure rose from 8 ± 1 to 18 ± 1 mm Hg and brain tissue Po2 fell from 17 ± 1 to 2 ± 1 mm Hg. Without immediate resuscitation, death occurred within 60 mins (n ≤ 2). With normal saline resuscitation (n ≤ 14), systemic hemodynamics, mixed venous oxygen, renal oxygen, portal oxygen, and muscle oxygen corrected but there were four deaths (two at 45 mins, one at 100 mins, and one at 200 mins). Cerebral perfusion pressure was not restored until mannitol and pressor therapy were initiated at 120 mins. In contrast, with HBOC-201 at 30 mins (n ≤ 14), systolic arterial pressure and cerebral perfusion pressure corrected immediately (both p < 0.05) and there were no deaths (p ≤ 0.0978). After 8 hrs, in both groups, cerebral perfusion pressure, systolic arterial pressure, and heart rate were stable; peripheral oxygen saturations were near normal; lactate was cleared; urine output was adequate. However, with HBOC-201, pressor and fluid requirements were reduced by half, which improved intracranial pressure and brain tissue Po2 (all p < 0.05 vs. control). Reducing tetramer content had no significant effect on the actions of HBOC-201. CONCLUSIONS: 1) A single bolus of HBOC-201 at initial resuscitation rapidly restored cerebral perfusion pressure and stabilized hemodynamics with improved intracranial pressure and brain oxygen for the first 8 hrs; and 2) HBOC-201 could be an effective salvage therapy after severe neurotrauma or as a temporizing measure during prolonged transport of a polytrauma patient.

Original languageEnglish
Pages (from-to)2838-2848
Number of pages11
JournalCritical Care Medicine
Volume36
Issue number10
DOIs
StatePublished - Oct 1 2008

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Oxygen Compounds
Salvage Therapy
Injury Severity Score
Multiple Trauma
Hemoglobins
Cerebrovascular Circulation
Resuscitation
Oxygen
Arterial Pressure
Intracranial Pressure
Blood Pressure
Heart Rate
Lactic Acid
Brain
Swine
Hemodynamics
Hypoventilation
Wounds and Injuries
Firearms
Mannitol

Keywords

  • Blast
  • Blood substitute
  • Cerebral perfusion pressure
  • Combat casualty care
  • Hemoglobin-based oxygen carrying compound
  • Swine
  • Traumatic brain injury

ASJC Scopus subject areas

  • Critical Care and Intensive Care Medicine

Cite this

Hemoglobin-based oxygen carrying compound-201 as salvage therapy for severe neuro- and polytrauma (Injury Severity Score ≤ 27-41). / Dudkiewicz, Michael; Harpaul, Tracey A.; Proctor, Kenneth G.

In: Critical Care Medicine, Vol. 36, No. 10, 01.10.2008, p. 2838-2848.

Research output: Contribution to journalArticle

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abstract = "OBJECTIVE: A prehospital trial in trauma patients has been proposed to evaluate Hemopure (hemoglobin glutamer-250 [bovine], hemoglobin-based oxygen carrying compound [HBOC]-201, Biopure). We tested the hypothesis that HBOC-201 would improve cerebrovascular resuscitation in a unique polytrauma model. DESIGN: Prospective, randomized, blinded animal study. SUBJECTS: Thirty-two anesthetized swine (42 ± 1 kg). INTERVENTIONS: Blunt trauma to the head, right chest, and bilateral femurs (Injury Severity Score ≤ 27-41) with captive bolt guns was followed by hypoventilation. Resuscitation was divided into phases to simulate conventional treatment in the prehospital, emergency room, and early intensive care unit. For 30-60 mins postinjury, 500 mL of either normal saline (control, n ≤ 14) or HBOC-201 (n ≤ 14) was administered. All received similar care thereafter. For 60-120 mins, normal saline maintained systolic arterial pressure >100 mm Hg and heart rate <100 beats/min plus mannitol (250 mg/kg) for intracranial hypertension. For 120-480 mins, phenylephrine, normal saline, and dextrose were administered to maintain cerebral perfusion pressure >70 mm Hg, filling pressure >12 mm Hg, and plasma glucose >60 mg{\%}, respectively. Two formulations of HBOC-201 (average MW ≤ 250 kDa) were tested: one with <3{\%} 65 kDa tetramers (n ≤ 7) and the other with <0.3{\%} 65 kDa tetramers (n ≤ 7). MEASUREMENTS AND MAIN RESULTS: Injury severity is reflected by the death of 2 of 32 swine within 30 mins. In survivors (n ≤ 30), systolic arterial pressure was 83 ± 6 mm Hg, heart rate was 115 ± 5 beats/min, and lactate was 5.8 ± 0.4 mM. Intracranial pressure rose from 8 ± 1 to 18 ± 1 mm Hg and brain tissue Po2 fell from 17 ± 1 to 2 ± 1 mm Hg. Without immediate resuscitation, death occurred within 60 mins (n ≤ 2). With normal saline resuscitation (n ≤ 14), systemic hemodynamics, mixed venous oxygen, renal oxygen, portal oxygen, and muscle oxygen corrected but there were four deaths (two at 45 mins, one at 100 mins, and one at 200 mins). Cerebral perfusion pressure was not restored until mannitol and pressor therapy were initiated at 120 mins. In contrast, with HBOC-201 at 30 mins (n ≤ 14), systolic arterial pressure and cerebral perfusion pressure corrected immediately (both p < 0.05) and there were no deaths (p ≤ 0.0978). After 8 hrs, in both groups, cerebral perfusion pressure, systolic arterial pressure, and heart rate were stable; peripheral oxygen saturations were near normal; lactate was cleared; urine output was adequate. However, with HBOC-201, pressor and fluid requirements were reduced by half, which improved intracranial pressure and brain tissue Po2 (all p < 0.05 vs. control). Reducing tetramer content had no significant effect on the actions of HBOC-201. CONCLUSIONS: 1) A single bolus of HBOC-201 at initial resuscitation rapidly restored cerebral perfusion pressure and stabilized hemodynamics with improved intracranial pressure and brain oxygen for the first 8 hrs; and 2) HBOC-201 could be an effective salvage therapy after severe neurotrauma or as a temporizing measure during prolonged transport of a polytrauma patient.",
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T1 - Hemoglobin-based oxygen carrying compound-201 as salvage therapy for severe neuro- and polytrauma (Injury Severity Score ≤ 27-41)

AU - Dudkiewicz, Michael

AU - Harpaul, Tracey A.

AU - Proctor, Kenneth G

PY - 2008/10/1

Y1 - 2008/10/1

N2 - OBJECTIVE: A prehospital trial in trauma patients has been proposed to evaluate Hemopure (hemoglobin glutamer-250 [bovine], hemoglobin-based oxygen carrying compound [HBOC]-201, Biopure). We tested the hypothesis that HBOC-201 would improve cerebrovascular resuscitation in a unique polytrauma model. DESIGN: Prospective, randomized, blinded animal study. SUBJECTS: Thirty-two anesthetized swine (42 ± 1 kg). INTERVENTIONS: Blunt trauma to the head, right chest, and bilateral femurs (Injury Severity Score ≤ 27-41) with captive bolt guns was followed by hypoventilation. Resuscitation was divided into phases to simulate conventional treatment in the prehospital, emergency room, and early intensive care unit. For 30-60 mins postinjury, 500 mL of either normal saline (control, n ≤ 14) or HBOC-201 (n ≤ 14) was administered. All received similar care thereafter. For 60-120 mins, normal saline maintained systolic arterial pressure >100 mm Hg and heart rate <100 beats/min plus mannitol (250 mg/kg) for intracranial hypertension. For 120-480 mins, phenylephrine, normal saline, and dextrose were administered to maintain cerebral perfusion pressure >70 mm Hg, filling pressure >12 mm Hg, and plasma glucose >60 mg%, respectively. Two formulations of HBOC-201 (average MW ≤ 250 kDa) were tested: one with <3% 65 kDa tetramers (n ≤ 7) and the other with <0.3% 65 kDa tetramers (n ≤ 7). MEASUREMENTS AND MAIN RESULTS: Injury severity is reflected by the death of 2 of 32 swine within 30 mins. In survivors (n ≤ 30), systolic arterial pressure was 83 ± 6 mm Hg, heart rate was 115 ± 5 beats/min, and lactate was 5.8 ± 0.4 mM. Intracranial pressure rose from 8 ± 1 to 18 ± 1 mm Hg and brain tissue Po2 fell from 17 ± 1 to 2 ± 1 mm Hg. Without immediate resuscitation, death occurred within 60 mins (n ≤ 2). With normal saline resuscitation (n ≤ 14), systemic hemodynamics, mixed venous oxygen, renal oxygen, portal oxygen, and muscle oxygen corrected but there were four deaths (two at 45 mins, one at 100 mins, and one at 200 mins). Cerebral perfusion pressure was not restored until mannitol and pressor therapy were initiated at 120 mins. In contrast, with HBOC-201 at 30 mins (n ≤ 14), systolic arterial pressure and cerebral perfusion pressure corrected immediately (both p < 0.05) and there were no deaths (p ≤ 0.0978). After 8 hrs, in both groups, cerebral perfusion pressure, systolic arterial pressure, and heart rate were stable; peripheral oxygen saturations were near normal; lactate was cleared; urine output was adequate. However, with HBOC-201, pressor and fluid requirements were reduced by half, which improved intracranial pressure and brain tissue Po2 (all p < 0.05 vs. control). Reducing tetramer content had no significant effect on the actions of HBOC-201. CONCLUSIONS: 1) A single bolus of HBOC-201 at initial resuscitation rapidly restored cerebral perfusion pressure and stabilized hemodynamics with improved intracranial pressure and brain oxygen for the first 8 hrs; and 2) HBOC-201 could be an effective salvage therapy after severe neurotrauma or as a temporizing measure during prolonged transport of a polytrauma patient.

AB - OBJECTIVE: A prehospital trial in trauma patients has been proposed to evaluate Hemopure (hemoglobin glutamer-250 [bovine], hemoglobin-based oxygen carrying compound [HBOC]-201, Biopure). We tested the hypothesis that HBOC-201 would improve cerebrovascular resuscitation in a unique polytrauma model. DESIGN: Prospective, randomized, blinded animal study. SUBJECTS: Thirty-two anesthetized swine (42 ± 1 kg). INTERVENTIONS: Blunt trauma to the head, right chest, and bilateral femurs (Injury Severity Score ≤ 27-41) with captive bolt guns was followed by hypoventilation. Resuscitation was divided into phases to simulate conventional treatment in the prehospital, emergency room, and early intensive care unit. For 30-60 mins postinjury, 500 mL of either normal saline (control, n ≤ 14) or HBOC-201 (n ≤ 14) was administered. All received similar care thereafter. For 60-120 mins, normal saline maintained systolic arterial pressure >100 mm Hg and heart rate <100 beats/min plus mannitol (250 mg/kg) for intracranial hypertension. For 120-480 mins, phenylephrine, normal saline, and dextrose were administered to maintain cerebral perfusion pressure >70 mm Hg, filling pressure >12 mm Hg, and plasma glucose >60 mg%, respectively. Two formulations of HBOC-201 (average MW ≤ 250 kDa) were tested: one with <3% 65 kDa tetramers (n ≤ 7) and the other with <0.3% 65 kDa tetramers (n ≤ 7). MEASUREMENTS AND MAIN RESULTS: Injury severity is reflected by the death of 2 of 32 swine within 30 mins. In survivors (n ≤ 30), systolic arterial pressure was 83 ± 6 mm Hg, heart rate was 115 ± 5 beats/min, and lactate was 5.8 ± 0.4 mM. Intracranial pressure rose from 8 ± 1 to 18 ± 1 mm Hg and brain tissue Po2 fell from 17 ± 1 to 2 ± 1 mm Hg. Without immediate resuscitation, death occurred within 60 mins (n ≤ 2). With normal saline resuscitation (n ≤ 14), systemic hemodynamics, mixed venous oxygen, renal oxygen, portal oxygen, and muscle oxygen corrected but there were four deaths (two at 45 mins, one at 100 mins, and one at 200 mins). Cerebral perfusion pressure was not restored until mannitol and pressor therapy were initiated at 120 mins. In contrast, with HBOC-201 at 30 mins (n ≤ 14), systolic arterial pressure and cerebral perfusion pressure corrected immediately (both p < 0.05) and there were no deaths (p ≤ 0.0978). After 8 hrs, in both groups, cerebral perfusion pressure, systolic arterial pressure, and heart rate were stable; peripheral oxygen saturations were near normal; lactate was cleared; urine output was adequate. However, with HBOC-201, pressor and fluid requirements were reduced by half, which improved intracranial pressure and brain tissue Po2 (all p < 0.05 vs. control). Reducing tetramer content had no significant effect on the actions of HBOC-201. CONCLUSIONS: 1) A single bolus of HBOC-201 at initial resuscitation rapidly restored cerebral perfusion pressure and stabilized hemodynamics with improved intracranial pressure and brain oxygen for the first 8 hrs; and 2) HBOC-201 could be an effective salvage therapy after severe neurotrauma or as a temporizing measure during prolonged transport of a polytrauma patient.

KW - Blast

KW - Blood substitute

KW - Cerebral perfusion pressure

KW - Combat casualty care

KW - Hemoglobin-based oxygen carrying compound

KW - Swine

KW - Traumatic brain injury

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