Sodium lactate infusions and panic attacks: a review and critique

Area of Science:

• Psychiatry
• Neuroscience
• Anxiety Disorders

Background:

• Sodium lactate infusions have been investigated as a potential experimental model and biologic marker for panic attacks.
• Previous research suggested that panic attack patients exhibit distinct responses to lactate compared to healthy controls.

Purpose of the Study:

• To critically evaluate the validity of sodium lactate infusions as a model and marker for panic attacks.
• To examine the evidence for the underlying biologic distinctness of panic attacks from other anxiety conditions.

Main Methods:

• A comprehensive review and critical analysis of 13 relevant studies were conducted.
• Methodological rigor, specificity, sensitivity, and the role of cognitive variables were assessed.

Main Results:

• Serious methodological flaws were identified across the reviewed studies.
• The specificity and sensitivity of lactate response as a panic attack marker were found to be lacking.
• When baseline differences were controlled, patient and control group responses to lactate did not consistently differ.

Conclusions:

• Sodium lactate infusions cannot be reliably interpreted as a model or marker for panic attacks.
• Current evidence does not support the notion that panic attacks are biologically distinct from other anxiety disorders based on lactate response.
• A more comprehensive model involving peripheral physiology, past experiences, environmental cues, and cognitive appraisal is proposed.