Intensive versus conventional insulinotherapy after elective and on-pump myocardial revascularization: a prospective and randomized study.
OBJECTIVE
Strict glycemic control is increasingly recognized as an important goal in a broad spectrum of critically ill patients. We analyzed the inflammatory and clinical response of patients submitted to intensive or conventional insulinotherapy in a specific clinical context.


METHODS
We analyzed a prospective and randomized collected database of an Intensive Care Unit (ICU) in a University Hospital. The database comprised a total of 50 patients aged 30 to 80 (ASA II-III) who underwent elective and on-pump myocardial revascularization from September 2006 to June 2008. On ICU admission, patients were randomly assigned to Group 1 (intensive insulinotherapy) or Group 2 (conventional insulinotherapy). Data collected included glucose and lactate blood levels, haemodynamic parameters, cytokines (TNFalpha, IL-6, IL-8, IL-10), C-Reactive Protein, white blood cells and platelets blood levels, body temperature, Sequential Organ Failure Assessment (SOFA) score, Infection Probability Score (IPS) and ICU length of stay (LOS). Within-between group analysis, one-way ANOVA and unpaired t-test were used when appropriate.


RESULTS
Pre- and perioperative variables were comparable between the two groups (p=NS for all measurements). Glucose and lactate blood levels were lower in Group 1 (p less than 0.0001). Stroke Volume Index was higher in Group 1 (p less than 0.05). Moreover, we observed statistically significant differences between groups in terms of inflammatory parameters and severity scores. No difference was observed in ICU LOS.


CONCLUSIONS
Intensive insulinotherapy after elective on-pump myocardial revascularization significantly modulates the inflammatory response. Different inflammatory patterns could correlate with different clinical response as suggested by SOFA and IP score analysis.
Caroleo
S
S
Intensive Care Unit, University Hospital Mater Domini, Magna Graecia University, Catanzaro, Italy.
Bisurgi
G
G
Onorati
F
F
Rubino
A
A
Calandese
F
F
De Munda
C
C
Renzulli
A
A
Santangelo
E
E
Verre
M
M
Amantea
B
B
D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D017558:Elective Surgical Procedures; D006439:Hemodynamics; D006801:Humans; D007004:Hypoglycemic Agents / Q000008:administration & dosage*; D007249:Inflammation / Q000097:blood; D007328:Insulin / Q000008:administration & dosage*; D019344:Lactic Acid / Q000097:blood; D007902:Length of Stay; D008875:Middle Aged; D009204:Myocardial Revascularization / Q000379:methods; D011446:Prospective Studies
D007004:Hypoglycemic Agents; D007328:Insulin; D019344:Lactic Acid