Index
Module 10 • Neurology
Neurocritical Care
43%
Data Tables
Neurocritical Care
Keaton S. Smetana ~2 min read Module 10 of 20
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Neurocritical Care

Hypothermia during TBI may also reduce the induction of hepatic metabolism/cause metabolic

rate of medications to be less than baseline.

3

Augmented renal clearance

Increase in glomerular filtration rate (e.g., CrCL greater than 120 mL/min)

Fluid resuscitation

Increased endogenous catecholamines and glucocorticoid response

d.Results in more effective clearance of renally eliminated medications

Increased dosing requirement for commonly used agents such as vancomycin, aminoglycosides,

Ξ²-lactams (J Trauma Acute Care Surg 2016;81:1115-21; Neurocrit Care 2015;23:374-9; Clin

Pharmacokinet 2010;49:1-16; Pharmacotherapy 2019;39:346-54)

Augmented renal clearance tends to subside over time (usually after first 7–10 days, but varies by

patient).

VI.PAROXYSMAL SYMPATHETIC HYPERACTIVITY (I.E., β€œBRAIN STORMING”)
A.Epidemiology
1

About 8%–33% incidence in survivors of acquired brain injury

2Commonly associated with TBI (specifically diffuse axonal injury and high-burden parenchymal

lesions), but may occur with other CNS insults

B.Diagnosis
1

Typically, a diagnosis of exclusion and includes three or more symptoms in a cyclic fashion or

episodically when the patient is stimulated (Baguley 2014).

Fever

Tachycardia

Hypertension

d.Tachypnea

Dyspnea

Diaphoresis

Muscle rigidity (posturing)

2Common triggers

Pain

Bladder distension

Turning

d.Tracheal suctioning

Typically unprovoked (hence β€œparoxysmal”)

C.Pathophysiology largely unknown, but thought to be caused by somatosympathetic activation and heightened

activity of brain stem after brain injury

D.Paroxysmal Sympathetic Hyperactivity (PSH) Assessment Measure: A tool to determine the possibility of

PSH at that specific time has two components – Diagnosis Likelihood Tool and Clinical Feature Scale (J

Neurotrauma 2014;31:1515-20)

HD Video Explanation β€” Synchronized with PDF
Starts at: minute 22 Open on YouTube