Hypertonic Saline Bolus in Acute Heart Failure Management

Efficacy in Acute Heart Failure

Hypertonic saline is not recommended as a standalone treatment for acute heart failure, as there is insufficient high-quality evidence supporting this approach, according to the American Society of Anesthesiologists 1, 2

Hypertonic saline has been shown to be probably beneficial in non-obstructive cardiogenic shock (Grade C evidence), though the evidence is limited, as stated by the American Heart Association 2, 3
Studies in cardiac surgery patients have confirmed beneficial effects of hypertonic saline on hemodynamics, with increases in cardiac output and blood pressure, and reduced systemic vascular resistance, as reported by the American College of Cardiology 3

There is heterogeneity among studies regarding the concentration of hypertonic saline used (ranging from 1.7% to 30%), making standardized recommendations difficult, according to the American Society of Anesthesiologists 1, 2

No evidence of osmotic demyelination syndrome has been reported in studies of hypertonic saline use for heart failure when properly monitored, as stated by the American Heart Association 4

The use of hypertonic saline in cardiac surgery patients has shown increases in cardiac output and blood pressure, and reduced systemic vascular resistance, although it remains unclear whether these improvements result from preload effects or direct inotropic action, in patients with established heart failure or ventricular dysfunction 5
Studies involving hypertonic saline have primarily been conducted in relatively healthy patients undergoing cardiac procedures, rather than those with established heart failure, highlighting the need for further research in this area 5

The safety of hypertonic saline in patients with impaired ventricular function remains to be fully established, with no reported cases of osmotic demyelination syndrome in studies of hypertonic saline use for heart failure when properly monitored 5

Hypertonic saline creates an osmotic gradient that mobilizes interstitial fluid into the intravascular compartment, facilitating diuresis when combined with loop diuretics【6】.

In cardiac surgery patients without established heart failure, administration of hypertonic saline was associated with increased cardiac output and reduced systemic vascular resistance, indicating favorable hemodynamic modulation【7】.

For patients with cardiogenic shock secondary to anuric congestive heart failure, inotropic agents may be employed as supportive therapy when hypertonic saline is contraindicated【7】.