[Glucose-potassium-insulin in hypodynamic septic shock]

Area of Science:

• Critical Care Medicine
• Cardiovascular Physiology
• Metabolic Research

Context:

• Septic shock often presents with hypodynamic cardiovascular states refractory to standard treatments like fluid resuscitation and catecholamines.
• Patients with peritonitis and severe hypodynamic septic shock exhibit critically low mean arterial pressure and cardiac index despite aggressive interventions.
• The study focuses on a specific patient cohort with refractory shock, necessitating exploration of alternative therapeutic strategies.

Purpose:

• To investigate the haemodynamic and metabolic effects of glucose-potassium-insulin (GKI) infusion in patients with severe hypodynamic septic shock.
• To assess the efficacy of GKI in improving key cardiovascular parameters such as mean arterial pressure, cardiac index, and ventricular stroke work indices.
• To evaluate the impact of GKI on oxygen consumption and metabolic markers in critically ill patients.

Summary:

• Glucose-potassium-insulin (GKI) was administered to 14 patients with hypodynamic septic shock unresponsive to conventional therapy.
• Significant improvements were observed in systolic and mean arterial pressures, cardiac index, and ventricular stroke work indices post-GKI infusion.
• While heart rate remained stable, oxygen consumption increased, and serum glucose and pCO2 levels rose, with haemodynamic benefits lasting from 30 minutes to several hours.

Impact:

• GKI therapy demonstrated a potential benefit in managing refractory hypodynamic septic shock, improving critical haemodynamic parameters.
• The intervention resulted in short-term survival for a majority of patients, with a small percentage eventually discharged, suggesting a positive impact on patient outcomes.
• Further research is warranted to elucidate the precise mechanism of action through which GKI exerts its haemodynamic effects in septic shock.