Mineralocorticoid deficiency in hemorrhagic shock

Area of Science:

• Critical Care Medicine
• Endocrinology
• Trauma Surgery

Background:

• Mineralocorticoid deficiency (MD) is linked to worse outcomes in critically ill patients, including increased mortality and acute renal insufficiency.
• Hemorrhagic shock in trauma patients may be associated with a high degree of MD.
• MD in trauma patients might correlate with prolonged hospital stays, hypotension, increased fluid needs, and acute kidney injury (AKI).

Purpose of the Study:

• To determine the prevalence of MD in severely injured trauma patients experiencing hemorrhagic shock.
• To investigate the association between MD and clinical outcomes such as hypotension, fluid resuscitation requirements, and AKI risk.

Main Methods:

• Thirty-two trauma patients in hemorrhagic shock (systolic blood pressure <90 mm Hg) were enrolled.
• Plasma aldosterone (PA) and renin (PR) levels were measured via radioimmunoassay at multiple time points post-ICU admission.
• MD was defined as a PA/PR ratio ≤2. Clinical data including injury severity, length of stay, fluid and blood requirements, and AKI risk were compared between patients with and without MD.

Main Results:

• Nearly half (48%) of the trauma patients presented with MD upon ICU admission.
• Patients with MD showed a significantly higher incidence of hypotension (mean arterial pressure ≤60 mm Hg) during their ICU stay.
• MD patients required substantially more blood products (13 units vs. 5 units) and crystalloid fluids (18L vs. 9L) and were at increased risk for AKI.

Conclusions:

• Mineralocorticoid deficiency is a frequent condition in trauma patients with hemorrhagic shock.
• MD in this population necessitates more aggressive resuscitation, is linked to persistent hypotension, and elevates the risk of AKI.
• Further research is warranted to elucidate the full impact of MD post-trauma and explore potential therapeutic interventions, such as hormonal replacement therapy.