Clevidipine in the Treatment of Patients With Acute Hypertension and Intracerebral Hemorrhage (ACCELERATE)
The purpose of this study was to determine the efficacy and safety of clevidipine for treating acute hypertension (high blood pressure, defined as systolic blood pressure >160 mmHg) in patients with intracerebral hemorrhage (i.e., bleeding in the brain; stroke).
|Study Design:||Endpoint Classification: Safety/Efficacy Study
Intervention Model: Single Group Assignment
Masking: Open Label
Primary Purpose: Treatment
|Official Title:||The Evaluation of Patients With Acute Hypertension and Intracerebral Hemorrhage With Intravenous Clevidipine Treatment (ACCELERATE)|
- Median Time to Achieve Target SBP Range (≤160 mmHg to ≥140 mmHg) Within 30 Minutes of Initiation of Clevidipine [ Time Frame: Within 30 minutes of study drug initiation ] [ Designated as safety issue: No ]The median time, in minutes, was estimated with its two-tailed 95% confidence interval from the time of the initiation of clevidipine infusion until the first observed SBP was achieved in the target range of ≤160 mmHg to ≥140 mmHg within the first 30 minutes of clevidipine treatment. If patients did not reach the blood pressure target range within the first 30 minutes, their data was considered censored at 30 minutes. If another IV and/or oral antihypertensive agent indicated for hypertension was administered less than 30 minutes prior to achieving the endpoint, the data was considered censored at the time when the additional or alternative antihypertensive agent was given.
- Percentage of Participants Achieving a SBP of ≤160 mmHg Within 30 Minutes of Initiation of Clevidipine [ Time Frame: Within 30 minutes of study drug initiation ] [ Designated as safety issue: No ]The percentage of patients who reached SBP of ≤160 mmHg within the first 30 minutes of initiation of clevidipine infusion was summarized. If an additional or alternative IV antihypertensive agent and/or oral antihypertensive agent was administered for hypertension prior to a patient achieving SBP≤160 mmHg during the initial 30-minute treatment period, then the patient was considered to have failed to reach this efficacy endpoint.
- Percent Change From Baseline in Systolic Blood Pressure During the Initial 30 Minutes of Clevidipine Infusion [ Time Frame: Baseline through 30 minutes post initiation of clevidipine infusion ] [ Designated as safety issue: No ]Over the initial 30 minutes of the treatment period, the percent change from baseline (defined as immediately prior to study drug initiation) was summarized descriptively at 1, 2, 3, 4, 5, 6, 7, 10, 15, 20, 25, and 30 minutes after clevidipine initiation. Decreases in SBP from baseline were observed over the course of this time period.
- Magnitude, Frequency and Duration of Systolic Blood Pressure Excursions (Calculated as Area Under the Curve [AUC]) Outside the Target Range Normalized Per Hour for the Duration of the Clevidipine Monotherapy Infusion [ Time Frame: Duration of the study drug infusion (up to 96 hours) ] [ Designated as safety issue: No ]Total AUC-SBP captures the magnitude and duration of SBP either above the upper limit of the target SBP range at 160 mm Hg or below the lower limit of 140 mm Hg and normalized per hour for the duration of clevidipine infusion. A larger value for AUC-SBP indicates greater SBP variability outside the target range.
- Percent Time Blood Pressures Were Maintained Within the Target Range (Systolic Blood Pressure ≤160 mmHg to ≥140 mmHg) Over Each 24 Hour Period During Monotherapy Infusion of Clevidipine [ Time Frame: From study drug initiation through termination (up to 96 h) ] [ Designated as safety issue: No ]The percent time that SBP was maintained within the SBP target range (≤160 mmHg to ≥140 mmHg) was summarized for each 24-hour period of monotherapy of clevidipine infusion through 96 hours (0 -≤24 h, 24-≤48 h, 48-≤72 h, 72-≤96 h). For purposes of this analysis, SBP data were available from all mITT patients for the overall infusion period and from 0 to ≤24 hours of infusion; however, data was only available for 8 patients from 24 to ≤48 hours, 4 patients from 48 to ≤72 hours and 1 patient from 72 to ≤96 hours due to the variability in infusion durations >24 hours across patients.
- Mean Dose of Clevidipine During the Treatment Period [ Time Frame: Up to 96 hours ] [ Designated as safety issue: No ]Mean total dose of clevidipine from study drug initiation to the end of clevidipine treatment
- Median Dose of Clevidipine During the Treatment Period [ Time Frame: Up to 96 hours ] [ Designated as safety issue: No ]Mean total dose of clevidipine from study drug initiation to the end of clevidipine treatment
- Proportion of Patients Requiring an Additional or Alternative Antihypertensive Agent(s) With or Without Clevidipine [ Time Frame: Up to 96 hours ] [ Designated as safety issue: No ]Additional or alternative antihypertensive agent(s) comprise the use of other antihypertensive agent(s) either with clevidipine (additional) or in place of clevidipine (alternative) for the indication of hypertension from the time of clevidipine initiation to clevidipine termination. For purposes of this analysis, additional or alternative antihypertensive agents did not include oral antihypertensives that were administered in order to transition IV clevidipine-treated patients to oral therapy during the transition period of the study.
- Percent Change in Heart Rate During 30 of Initiation of Clevidipine [ Time Frame: From study drug initiation through each specified timepoint ] [ Designated as safety issue: Yes ]Multiple timepoints were assessed (minutes 1, 2, 3, 4, 5, 10, 15, 20, 30) for analysis of percent change in heart rate during the initial 30 minutes.
- The Percentage of Patients Whose Systolic Blood Pressure is <90 mmHg Within 30 Minutes of the Initiation of Clevidipine Infusion [ Time Frame: Within 30 minutes of the initiation of study drug infusion ] [ Designated as safety issue: Yes ]
|Study Start Date:||June 2008|
|Study Completion Date:||April 2010|
|Primary Completion Date:||April 2010 (Final data collection date for primary outcome measure)|
This will be a single-arm study with no reference therapy.
Clevidipine injectable emulsion (0.5 mg/mL) in 20% lipid emulsion in 100 mL bottles was administered intravenously to all patients via a single dedicated line.
Clevidipine was infused at an initial rate of 2.0 mg/h for the first 1.5 minutes. Thereafter, titration to higher infusion rates were to be attempted as needed to obtain the target systolic blood pressure (SBP) range (SBP ≤160 mmHg to ≥140 mmHg). Titration to effect was to proceed by doubling the dose every 1.5 minutes, up to a maximum of 32.0 mg/h, until the desired effect (SBP within the target range) was attained. The clevidipine infusion rate could be increased or decreased to maintain systolic blood pressure for up to a maximum of 96 hours.
This was a multicenter, single-arm, non-blinded dose titration efficacy and safety trial evaluating the ability of clevidipine, a vascular-selective L-type calcium channel antagonist, to rapidly control acute hypertension in patients with intracerebral hemorrhage. Informed consent was obtained from patients meeting the inclusion criteria before the initiation of any study-specific procedures. At screening, a clinical and neurological examination was carried out. For the purposes of this study, acute hypertension was defined as SBP >160 mmHg immediately prior to initiation of study drug. Approximately 30 to 40 patients with acute intracerebral hemorrhage (ICH) were planned to be enrolled with approximately 10 patients requiring monitoring of intracranial pressure (ICP). Infusion of study drug was initiated within 12 hours of ICH symptom onset. All eligible patients enrolled received clevidipine in an open label manner. Clevidipine was to be infused at an initial rate of 2.0 mg/h for the first 1.5 minutes. Thereafter, titration to higher infusion rates were to be attempted as needed, to obtain the target SBP range (SBP ≤160 mmHg to ≥140 mmHg). Titration to effect was to proceed by doubling the dose every 1.5 minutes, up to a maximum of 32.0 mg/h, until the desired effect (SBP within the target range) was attained. During the first 30 minutes, if the desired blood pressure lowering effect was not attained or maintained, an alternative intravenous (IV) antihypertensive agent(s), advised to be a different class other than calcium channel blockers, could be used with or without stopping the clevidipine infusion. The clevidipine infusion could continue for up to a maximum of 96 hours. Twenty-four hour follow-up computerized tomography (CT) scan results were recorded, including measurement of intracerebral hematoma volumes. Assessment of safety was performed throughout the treatment period and until 6 hours after termination of study drug. Patients were followed for 7 days following termination of the clevidipine infusion.
|United States, District of Columbia|
|Washington Hospital Center|
|Washington, District of Columbia, United States, 20010-2975|
|United States, Hawaii|
|The Queens Medical Center|
|Honolulu, Hawaii, United States, 96813|
|United States, Maryland|
|The John Hopkins Hospital|
|Baltimore, Maryland, United States, 21287|
|United States, Massachusetts|
|Maine Medical Center|
|Portland, Massachusetts, United States, 04102|
|United States, Michigan|
|Henry Ford Hospital|
|Detroit, Michigan, United States, 48202|
|United States, New York|
|Columbia University Medical Center|
|New York, New York, United States, 10032|
|United States, North Carolina|
|Duke University Medical Center|
|Durham, North Carolina, United States, 27710|
|Guilford Neurologic - Moses H Cone Health System|
|Greensboro, North Carolina, United States, 27405|
|United States, Ohio|
|Cleveland Clinic Hospitals|
|Cleveland, Ohio, United States, 44195|
|The Ohio State University|
|Columbus, Ohio, United States, 43210|
|United States, Pennsylvania|
|Thomas Jefferson University Stroke Research|
|Philadelphia, Pennsylvania, United States, 19107|
|United States, South Carolina|
|Medical University of South Carolina|
|Charleston, South Carolina, United States, 29425|
|United States, Texas|
|The University Health Science Center at S.A.|
|San Antonio, Texas, United States, 78229-3900|
|United States, Utah|
|Intermountain Medical Center|
|Murray, Utah, United States, 84157|
|Liebigstraße 22a, Leipzig, Germany, D-04103|
|Erlangen, Germany, D91054|
|Heidelberg, Germany, D69120|
|Principal Investigator:||Carmelo Graffagnino, MD||Duke University|