Dexamethasone to Treat Acute Chest Syndrome in People With Sickle Cell Disease
|Study Design:||Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Double Blind (Subject, Caregiver, Investigator, Outcomes Assessor)
Primary Purpose: Treatment
|Official Title:||Randomized Trial of Oral Dexamethasone for Acute Chest Syndrome|
- Log (Natural) of Duration of Signs and Symptoms of Acute Chest Syndrome (ACS) or Duration of Hospitalization, Whichever is Less [ Time Frame: Measured from first dose to end of the hospital stay, no maximum number of days ]Resolution of symptoms of ACS includes respiratory rate <= upper limit of normal +2, no work of breathing (retractions, nasal flaring, and use of accessory muscles), thoracic pain <= 4, no use of supplemental oxygen, no use of ventilary support, and saturation of peripheral oxygen (Sp02) >= steady state value -2. Symptoms were measured every 4 hours from the first dose of study drug to resolution of symptoms or hospital discharge.
- Rating of Pain [ Time Frame: Measured at the end of the hospital stay ]Change from baseline rating of pain from randomization (baseline) to discharge from the hospital, evaluated every 4 hours. Pain was rated on the Oucher Scale for the pediatric population or numeric rating scale for the adult population, both 0 to 10 with 0 indicating no pain and 10 indicating severe pain.
- Duration of Hospitalization [ Time Frame: Measured at the end of hospital stay, no maximum number of days ]Duration in hours from treatment start time to hospital discharge.
- Duration of Supplemental Oxygen [ Time Frame: Measured at the end of hospital stay ]Time period between the supplemental oxygen start date/time and first dose date/time, whichever is later, and the supplemental oxygen stop date/time
- Duration of Hypoxemia (Low Blood Oxygen) [ Time Frame: Measured at the end of hospital stay ]Sum of time periods when subject was hypoxemic (Sp02 value less than 92%) since the first dose date/time
|Study Start Date:||December 2006|
|Study Completion Date:||November 2008|
|Primary Completion Date:||June 2008 (Final data collection date for primary outcome measure)|
|Active Comparator: Dexamethasone||
Individuals meeting entry criteria will be randomized to receive dexamethasone 0.3 mg/kg (12 mg maximum single dose). The study drug will be given by mouth every 12 hours until discharge from the hospital or for a maximum of 4 doses (2 days), whichever occurs first. Thereafter, study drug will be tapered over 6 days for a total duration of therapy not to exceed 8 days.
|Placebo Comparator: Placebo||
Individuals meeting entry criteria will be randomized to receive 0.3 mg/kg (12 mg maximum single dose) of placebo. The study drug will be given by mouth every 12 hours until discharge from the hospital or for a maximum of 4 doses (2 days), whichever occurs first. Thereafter, study drug will be tapered over 6 days for a total duration of therapy not to exceed 8 days.
SCD is an inherited blood disorder. Symptoms include anemia, infections, organ damage, and intense episodes of pain, which are called "sickle cell crises." ACS is a life-threatening, lung-related complication of SCD that can lower the level of oxygen in the blood. Repeat occurrences of ACS can cause lung damage. It is the second most common cause of hospitalizations among people with SCD and accounts for more than 25% of premature deaths in people with SCD. Symptoms of ACS include fever, chest pain, cough, and breathing difficulties. ACS can appear suddenly and often requires immediate hospitalization and treatment, including antibiotics, supplemental oxygen, and blood transfusions. Previous studies have shown that dexamethasone, a type of steroid medication that blocks inflammation, can decrease hospitalization time for people with ACS; however, some participants in these earlier studies were re-hospitalized due to new sickle cell pain. Slowly decreasing the dosage of dexamethasone over a period of time may decrease the chance that new sickle cell pain will occur. The purpose of this study is to evaluate the effectiveness of a dexamethasone regimen that includes a gradual dose reduction at decreasing hospitalization and recovery time in people with SCD and ACS.
This study will enroll people with SCD who are hospitalized and have been diagnosed with ACS within the past 24 hours. Participants will be randomly assigned to receive either dexamethasone or placebo on a daily basis for 8 days. Every 2 days the medication dose will be gradually reduced. While in the hospital, participants will receive usual care for ACS, including antibiotics, pain control medication, intravenous fluids, and other needed treatments. Each day, participants will undergo a physical exam, a pain assessment score, a test to measure the oxygen level in the body, blood collection, and, if needed, a chest x-ray. Vital signs and blood pressure measurements will be taken every 4 hours. Study staff will document the amount of pain medication, blood transfusions, oxygen, and breathing treatments participants receive.
Upon leaving the hospital, follow-up visits will occur 1 week after participants were originally admitted to the hospital (participants who are still hospitalized at this time will not attend this visit) and 1 month after hospital discharge. At both visits, information on hospital visits for pain treatment and blood transfusions will be collected, and evaluations performed earlier in the study will be repeated. The second visit will also include lung function tests.
Please refer to this study by its ClinicalTrials.gov identifier: NCT00530270
|United States, California|
|University of California - Davis|
|Sacramento, California, United States, 95817|
|United States, Kentucky|
|Kosair Children's Hospital|
|Louisville, Kentucky, United States, 40202|
|United States, Massachusetts|
|Children's Hospital Boston|
|Boston, Massachusetts, United States, 02115|
|United States, North Carolina|
|University of North Carolina|
|Chapel Hill, North Carolina, United States, 27599|
|United States, Pennsylvania|
|St. Christopher's Hospital|
|Philadelphia, Pennsylvania, United States, 19134|
|United States, Texas|
|Children's Medical Center of Dallas|
|Dallas, Texas, United States, 75235|
|Principal Investigator:||Charles Quinn, MD||University of Texas, Southwestern Medical Center at Dallas|