Understanding paroxysmal sympathetic hyperactivity after traumatic brain injury

Area of Science:

• Neurology
• Critical Care Medicine

Background:

• Paroxysmal sympathetic hyperactivity (PSH) is a rare but serious condition following severe traumatic brain injury (TBI).
• Characterized by excessive adrenergic output, PSH presents with symptoms like tachycardia, hypertension, tachypnea, and diaphoresis.
• Diagnosis is challenging due to its nature as a diagnosis of exclusion, often leading to delays in management.

Purpose of the Study:

• To review the current literature on paroxysmal sympathetic hyperactivity (PSH) in patients with traumatic brain injury (TBI).
• To identify potential treatments and highlight the role of nursing in managing PSH.

Main Methods:

• A comprehensive literature review was conducted using Medline and Cinahl databases.
• Search terms included "paroxysmal sympathetic hyperactivity," "autonomic storming," "diencephalic seizures," and "sympathetic storming."
• Reference lists of relevant articles were also systematically reviewed.

Main Results:

• Current understanding of PSH following TBI is limited, with most data derived from small case series.
• The review identified several potential treatments that may be beneficial for managing PSH symptoms.
• The literature underscores the nascent stage of research into PSH.

Conclusions:

• Nurses are pivotal in identifying at-risk patients, recognizing symptom complexes, and educating families about PSH.
• Early detection and prompt treatment of PSH are essential for reducing morbidity and promoting recovery.
• Further research is required to develop standardized screening tools and evidence-based treatment algorithms for PSH.