A tight glucose control with intravenous insulin in patients suffering from acute coronary syndrome (ACS) would decrease their platelet reactivity compared to subcutaneous insulin.
On 26/06/2008 the sources of funding field was changed from 'Grant application submitted to the Spanish Foundation for Investigation in Science (FIS). Decision pending as of 11/01/2008' to 'Foundation for Development and Cardiovascular Research (Spain)'.
On 10/08/2009 the following changes were made to the trial record:
1. The target number of participants was changed from 200 to 115.
2. The sources of funding was changed from 'Foundation for Development and Cardiovascular Research (Spain)' to 'Foundation for Cardiovascular Research (Fundación Investigación Cardiovascular [FIC]) (Spain)'.
Local Ethics Committee of the Hospital Clinico San Carlos (Coordinación de ensayos clinicos del Hospital Clinico San Carlos), 07/03/2007, amendments approved 12/12/2007, ref: 07/062
Open single-centre randomised controlled trial
Primary study design
Secondary study design
Randomised controlled trial
Patient information sheet
Not available in web format, please use the contact details below to request a patient information sheet.
Acute coronary syndrome
Patients are randomised to one of two protocols of glycaemic control.
Intervention group (therapy A): intensive treatment. The aim was to obtain a glycaemia of 80 to 120 mg/dl (4.44 to 6.66 mmol/l). Infusion of insulin is started and hourly controls of the rate of infusion was carried out according to a chart elaborated by the Diabetes Unit of our centre. After 24 hours of insulin infusion, a nocturnal dose of ultra-slow insulin was calculated, together with fast subcutaneous insulin before meals.
Control group (therapy B): standard treatment. The aim was to obtain a glycaemia of less than 180 mg/dl (9.99 mmol/l). The participants were treated with fast subcutaneous insulin before meals, according to a corrective chart, together with slow insulin twice a day (bid). In patients diagnosed with diabetes, the dose of slow insulin was calculated from their previous treatment or according to the weight (0.1 unit per kilogram every 12 h)
As of 10/08/2009, recruitment has ended for this trial. The last patient was recruited on 29/07/2009.
Primary outcome measure
1. Effects of treatment on platelet reactivity. Platelet reactivity at baseline, 24 and 48 hours will be assessed by the following:
1.1. Platelet activation: flow cytometry; analysis of platelet P-selectin and GPIIb/IIIa, basal and activated with ADP (1 and 5 µM) and thrombin receptor activating peptide (TRAP) (1 and 5 µM)
1.2. Intracellular expression of vasodilator-stimulated phosphoprotein (VASP)
1.3. Soluble sCD40L
1.4. Platelet aggregation
2. Metabolic study: free fatty acids, leptin, adiponectin, and ßOH-butirate. They will be assessed at baseline, 24 and 48 hours, 3, 6, 9 and 12 months of follow-up
3. Influence of platelet polymorphisms on treatment effects. Genetic polymorphisms will be assessed by polymerase chain reaction (PCR) for P-selectin receptor, platelet ADP receptor and phospholipase A2 receptor (PLA2) receptor of GPIIb/IIIa
Secondary outcome measures
Current secondary outcome measures as of 10/08/2009:
Association between the parameters above and cardiovascular major events during follow-up, between different levels of glycaemia, different evolution of diabetes mellitus (quantified by HbA1c, ages of evolution, type of treatment)
Previous secondary outcome measures:
Clinical outcome: association between the parameters above and cardiovascular major events during follow-up. Cardiovascular major events (death, reinfarction, angina, revascularisation, ictus, cardiogenic shock, pulmonary oedema) during follow-up will be recorded.
Overall trial start date
Overall trial end date
Reason abandoned (if study stopped)
Participant inclusion criteria
Consecutive patients admitted to the Coronary Care Unit with ACS and hyperglycaemia will be enrolled if they meet the following criteria:
1. Chest pain in the 24 hours previous to their inclusion
2. Older than 18 years
3. Written informed consent
4. Participant must have one of the following:
4.1. ST segment elevation of at least 0.1 mV in two or more adjacent leads
4.2. New onset left bundle branch block
4.3. ST segment depression of at least 0.1 mV in two or more adjacent leads
4.4. Markers of myocardial necrosis (cardiac troponin I above normal levels)
5. Participants must have one of the following:
5.1. Known diabetes and glycaemia greater than 120 mg/dl (6.66 mmol/l) on admission
5.2. No diagnosis of diabetes and glycaemia greater than 160 mg/dl (8.88 mmol/l) on admission
5.3. No diagnosis of diabetes and glycaemia between 120 to 160 mg/dl at admission, and greater than 120 mg/dl one hour later
Target number of participants
115 (added 10/08/2009)
Participant exclusion criteria
1. Women of childbearing age
2. Inclusion in another clinical trial
3. Life expectancy of less than 1 year
4. High probability of loss on follow-up
5. Unclear origin of chest pain
6. Patients with scheduled percutaneous coronary interventions with complications during the procedure and are admitted to the Coronary Unit, but without chest pain in the last 24 hours
7. Patients on mechanical ventilation
8. Ethical barriers (e.g., patients who are not fluent in Spanish, relatives of investigators)
9. Glycaemia greater than 400 mg% (22.20 mmol/l) on admission
Recruitment start date
Recruitment end date
Countries of recruitment
Trial participating centre
c/o Prof Martin Lagos, sn
Hospital Clínico San Carlos, Instituto Cardiovascular (Spain)
c/o Prof Martin Lagos
Foundation for Cardiovascular Research (Fundación Investigación Cardiovascular [FIC]) (Spain)
Funding Body Type
Funding Body Subtype
Results and Publications
Publication and dissemination plan
Not provided at time of registration
Intention to publish date
Participant level data
Not provided at time of registration
Basic results (scientific)
2011 results in: http://www.ncbi.nlm.nih.gov/pubmed/21378389
Vivas D, García-Rubira JC, Bernardo E, Angiolillo DJ, Martín P, Calle-Pascual A, Núñez-Gil I, Macaya C, Fernández-Ortiz A, Effects of intensive glucose control on platelet reactivity in patients with acute coronary syndromes. Results of the CHIPS Study ("Control de Hiperglucemia y Actividad Plaquetaria en Pacientes con Sindrome Coronario Agudo")., Heart, 2011, 97, 10, 803-809, doi: 10.1136/hrt.2010.219949.