A Pharmacokinetic Analysis of Levetiracetam Prophylaxis in Critically Ill Patients With Severe Traumatic Brain Injury

NCT ID: NCT04836481

Last Updated: 2024-02-29

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Total Enrollment

10 participants

Study Classification

OBSERVATIONAL

Study Start Date

2021-01-01

Study Completion Date

2023-10-01

Brief Summary

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This study aims is to describe the pharmacokinetic properties of levetiracetam through measurement of serum concentrations in critically ill, severe traumatic brain injury patients.

Detailed Description

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Levetiracetam (LEV) is widely used for the prevention and treatment of seizures given its favorable pharmacokinetic profile. A strong correlation between serum concentrations and clinical efficacy has yet to be established; however, a target of 6-20 g/mL is recommended. Limited evidence exists supporting an optimal dosing strategy to achieve these target concentrations in neurocritically ill patients. Previous pharmacokinetic models suggest LEV 1000 mg every 8 hours achieves the highest proportion of therapeutic serum concentrations, but this dosing strategy has not been clinically studied in neurocritically ill patients. Additionally, only one phase two study has evaluated LEV pharmacokinetics in severe traumatic brain injury (TBI).

The aim of this study is to describe the pharmacokinetic properties of LEV through measurement of serum concentrations in critically ill, severe TBI patients. Secondarily, this study aims to develop a population pharmacokinetic model aimed at characterizing LEV dose optimization in severe TBI. An exploratory aim is to evaluate LEV pharmacodynamics in severe TBI patients through evaluation of physiologic, electrophysiologic and biochemical changes using multimodal monitoring or surface electroencephalogram (EEG), as available. A subgroup analysis will evaluate LEV pharmacokinetics in severe TBI patients with augmented renal clearance (ARC).

This prospective, single-center pharmacokinetic and pharmacodynamic study will include critically ill patients receiving intravenous LEV for seizure prophylaxis following severe TBI. Patients with severe TBI qualifying for multimodal monitoring will receive LEV 1000 mg every 8 hours (LEV8) per institutional practice. All other severe TBI patients will receive LEV 1000 mg every 12 hours (LEV12) according to institution practice. Patients with renal dysfunction (creatinine clearance \< 50 mL/min) will be excluded. All patients will have five serum samples collected following the sixth or greater consecutive dose. Patients receiving LEV8 will have samples collected at 0.5, 1, 4, 6, and 8 hours. Patients receiving LEV12 will have samples collected at 0.5, 1, 4, 8, and 12 hours. Serum concentrations will be analyzed with pharmacokinetic modeling and Monte Carlo simulations. LEV pharmacodynamics will be evaluated in patients receiving multimodal monitoring or surface EEG, as available. Analysis of ARC will include patients with Augmented Renal Clearance in Trauma Intensive Care (ARTIC) score \>6 during sampling.

Conditions

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Traumatic Brain Injury

Study Design

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Observational Model Type

OTHER

Study Time Perspective

PROSPECTIVE

Study Groups

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LEV8

Levetiracetam 1000 mg every 8 hours

Serum Sample Collection

Intervention Type OTHER

Each patient will have 5 serum samples collected for analysis after a minimum six consecutive doses. Patients receiving LEV8 will have sampled collected at hours 0.5, 1, 4, 6, and 8. Patients receiving LEV12 will have sampled collected at hours 0.5, 1, 4, 8, and 12.

LEV12

Levetiracetam 1000 mg every 12 hours

Serum Sample Collection

Intervention Type OTHER

Each patient will have 5 serum samples collected for analysis after a minimum six consecutive doses. Patients receiving LEV8 will have sampled collected at hours 0.5, 1, 4, 6, and 8. Patients receiving LEV12 will have sampled collected at hours 0.5, 1, 4, 8, and 12.

Interventions

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Serum Sample Collection

Each patient will have 5 serum samples collected for analysis after a minimum six consecutive doses. Patients receiving LEV8 will have sampled collected at hours 0.5, 1, 4, 6, and 8. Patients receiving LEV12 will have sampled collected at hours 0.5, 1, 4, 8, and 12.

Intervention Type OTHER

Eligibility Criteria

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Inclusion Criteria

* Admitted to the neurosurgical intensive care unit or surgical intensive care unit following severe traumatic brain injury (post-resuscitation GCS 3-8 with or without CT abnormalities)
* Receiving intravenous levetiracetam for seizure prophylaxis at a dose of 1000 mg every 12 hours or 1000 mg every 8 hours at time of enrollment

Exclusion Criteria

* Known history of epilepsy or seizure disorder
* Taking antiseizure medication prior to admission
* Taking medication with known effect on levetiracetam pharmacokinetics including carbamazepine, phenytoin, oxcarbazepine, mefloquine, methotrexate, mianserin, or orlistat
* Weight \< 50 kg
* Anticipated survival \<72 hours from injury, as deemed by the primary neurosurgical provider
* Acute Kidney Injury (Scr rise \> 0.3 mg/dL from baseline) or creatinine clearance \<50 mL/min at time of enrollment
* Prisoners
* Pregnant
Minimum Eligible Age

18 Years

Maximum Eligible Age

75 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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American College of Clinical Pharmacy

OTHER

Sponsor Role collaborator

University of Cincinnati

OTHER

Sponsor Role lead

Responsible Party

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Sarah Schuman Harlan

Pharmacy Resident, Primary Investigator

Responsibility Role PRINCIPAL_INVESTIGATOR

Principal Investigators

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Sarah Schuman Harlan, PharmD

Role: PRINCIPAL_INVESTIGATOR

University of Cincinnati

Shaun Keegan, PharmD

Role: PRINCIPAL_INVESTIGATOR

University of Cincinnati

Carolyn Philpott, PharmD

Role: PRINCIPAL_INVESTIGATOR

University of Cincinnati

Locations

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University of Cincinnati Medical Center

Cincinnati, Ohio, United States

Site Status

Countries

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United States

References

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Reference Type BACKGROUND
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Rowe AS, Goodwin H, Brophy GM, Bushwitz J, Castle A, Deen D, Johnson D, Lesch C, Liang N, Potter E, Roels C, Samaan K, Rhoney DH; Neurocritical Care Society Pharmacy Section. Seizure prophylaxis in neurocritical care: a review of evidence-based support. Pharmacotherapy. 2014;34(4):396-409. doi: 10.1002/phar.1374. Epub 2013 Nov 26.

Reference Type BACKGROUND
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Barletta JF, Mangram AJ, Byrne M, Sucher JF, Hollingworth AK, Ali-Osman FR, Shirah GR, Haley M, Dzandu JK. Identifying augmented renal clearance in trauma patients: Validation of the Augmented Renal Clearance in Trauma Intensive Care scoring system. J Trauma Acute Care Surg. 2017 Apr;82(4):665-671. doi: 10.1097/TA.0000000000001387.

Reference Type BACKGROUND
PMID: 28129261 (View on PubMed)

Zangbar B, Khalil M, Gruessner A, Joseph B, Friese R, Kulvatunyou N, Wynne J, Latifi R, Rhee P, O'Keeffe T. Levetiracetam Prophylaxis for Post-traumatic Brain Injury Seizures is Ineffective: A Propensity Score Analysis. World J Surg. 2016 Nov;40(11):2667-2672. doi: 10.1007/s00268-016-3606-y.

Reference Type RESULT
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Gabriel WM, Rowe AS. Long-term comparison of GOS-E scores in patients treated with phenytoin or levetiracetam for posttraumatic seizure prophylaxis after traumatic brain injury. Ann Pharmacother. 2014 Nov;48(11):1440-4. doi: 10.1177/1060028014549013. Epub 2014 Aug 28.

Reference Type RESULT
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Inaba K, Menaker J, Branco BC, Gooch J, Okoye OT, Herrold J, Scalea TM, Dubose J, Demetriades D. A prospective multicenter comparison of levetiracetam versus phenytoin for early posttraumatic seizure prophylaxis. J Trauma Acute Care Surg. 2013 Mar;74(3):766-71; discussion 771-3. doi: 10.1097/TA.0b013e3182826e84.

Reference Type RESULT
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Jones KE, Puccio AM, Harshman KJ, Falcione B, Benedict N, Jankowitz BT, Stippler M, Fischer M, Sauber-Schatz EK, Fabio A, Darby JM, Okonkwo DO. Levetiracetam versus phenytoin for seizure prophylaxis in severe traumatic brain injury. Neurosurg Focus. 2008 Oct;25(4):E3. doi: 10.3171/FOC.2008.25.10.E3.

Reference Type RESULT
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Szaflarski JP, Sangha KS, Lindsell CJ, Shutter LA. Prospective, randomized, single-blinded comparative trial of intravenous levetiracetam versus phenytoin for seizure prophylaxis. Neurocrit Care. 2010 Apr;12(2):165-72. doi: 10.1007/s12028-009-9304-y.

Reference Type RESULT
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Ramael S, Daoust A, Otoul C, Toublanc N, Troenaru M, Lu ZS, Stockis A. Levetiracetam intravenous infusion: a randomized, placebo-controlled safety and pharmacokinetic study. Epilepsia. 2006 Jul;47(7):1128-35. doi: 10.1111/j.1528-1167.2006.00586.x.

Reference Type RESULT
PMID: 16886975 (View on PubMed)

Steinhoff BJ, Staack AM. Levetiracetam and brivaracetam: a review of evidence from clinical trials and clinical experience. Ther Adv Neurol Disord. 2019 Sep 9;12:1756286419873518. doi: 10.1177/1756286419873518. eCollection 2019.

Reference Type RESULT
PMID: 31523280 (View on PubMed)

Spencer DD, Jacobi J, Juenke JM, Fleck JD, Kays MB. Steady-state pharmacokinetics of intravenous levetiracetam in neurocritical care patients. Pharmacotherapy. 2011 Oct;31(10):934-41. doi: 10.1592/phco.31.10.934.

Reference Type RESULT
PMID: 21950640 (View on PubMed)

Cotta MO, Abdul-Aziz MH, Frey OR, Sime FB, Roberts JA, Roehr AC. What Are the Predictors for Achieving Therapeutic Levetiracetam Serum Concentrations in Adult Neurological Patients? Ther Drug Monit. 2020 Aug;42(4):626-630. doi: 10.1097/FTD.0000000000000731.

Reference Type RESULT
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Klein P, Herr D, Pearl PL, Natale J, Levine Z, Nogay C, Sandoval F, Trzcinsky S, Atabaki SM, Tsuchida T, van den Anker J, Soldin SJ, He J, McCarter R. Results of phase II pharmacokinetic study of levetiracetam for prevention of post-traumatic epilepsy. Epilepsy Behav. 2012 Aug;24(4):457-61. doi: 10.1016/j.yebeh.2012.05.011. Epub 2012 Jul 7.

Reference Type RESULT
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Uges JW, van Huizen MD, Engelsman J, Wilms EB, Touw DJ, Peeters E, Vecht CJ. Safety and pharmacokinetics of intravenous levetiracetam infusion as add-on in status epilepticus. Epilepsia. 2009 Mar;50(3):415-21. doi: 10.1111/j.1528-1167.2008.01889.x. Epub 2008 Nov 17.

Reference Type RESULT
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Udy A, Boots R, Senthuran S, Stuart J, Deans R, Lassig-Smith M, Lipman J. Augmented creatinine clearance in traumatic brain injury. Anesth Analg. 2010 Dec;111(6):1505-10. doi: 10.1213/ANE.0b013e3181f7107d. Epub 2010 Nov 3.

Reference Type RESULT
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May CC, Arora S, Parli SE, Fraser JF, Bastin MT, Cook AM. Augmented Renal Clearance in Patients with Subarachnoid Hemorrhage. Neurocrit Care. 2015 Dec;23(3):374-9. doi: 10.1007/s12028-015-0127-8.

Reference Type RESULT
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Tong X, Patsalos PN. A microdialysis study of the novel antiepileptic drug levetiracetam: extracellular pharmacokinetics and effect on taurine in rat brain. Br J Pharmacol. 2001 Jul;133(6):867-74. doi: 10.1038/sj.bjp.0704141.

Reference Type RESULT
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Cockcroft DW, Gault MH. Prediction of creatinine clearance from serum creatinine. Nephron. 1976;16(1):31-41. doi: 10.1159/000180580.

Reference Type RESULT
PMID: 1244564 (View on PubMed)

Other Identifiers

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2020-0744

Identifier Type: -

Identifier Source: org_study_id

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