Surgical Evacuation of Acute Subdural Hematoma Improves Cerebral Hemodynamics in Children: a Transcranial Doppler Evaluation

Overview

Journal Childs Nerv Syst

Specialty Pediatrics

Date 2004 Sep 7

PMID 15349743

Citations 10

Authors

Philippe Gabriel Meyer

Sarah Ducrocq

Thibault Rackelbom

Gilles Orliaguet

Dominique Renier

Pierre Carli

Affiliations

Soon will be listed here.

Abstract

Objective: The objective was to evaluate cerebral hemodynamics in young children with acute subdural hematoma (SDH) and the impact of surgical treatment using transcranial Doppler (TCD).

Design: The design was a prospective study of infants with SDH requiring surgical evacuation.

Setting: The setting was the neuro intensive care unit of a university hospital.

Interventions: Indications for surgical evacuation were based upon clinical and radiological arguments. Surgery included emergency needle aspiration followed by external or/and internal shunting as required. A TCD evaluation was performed before needle aspiration, and after each surgical drainage procedure. It included a pressure provocation test to assess cerebral compliance. Preoperative and postoperative middle cerebral artery (MCA) velocities, Gosling pulsatility (PI) and Pourcelot resistivity (RI) indexes and compliance were compared with Student's t-test, or Fisher's exact test as indicated.

Measurements And Main Results: Out of 26 infants, 23 (88%) had injuries that had possibly been inflicted, and 3 had accidental injuries. Initial TCD evaluation demonstrated intracranial hypertension with decreased diastolic velocity, increased PI and RI, and decreased compliance. Surgical evacuation resulted in statistically significant improvement in cerebral hemodynamics (diastolic velocity: 17.2+/-10 cm/s vs. 31.1+/-10 cm/s, p<0.0015, PI: 2.5+/-1.3 vs. 1.4+/-0.8, p<0.002, RI: 0.8+/-0.2 vs. 0.6+/-0.1, p<0.005) in all but 3 infants, who eventually died. Surgical drainage (primary shunting or external drainage) was needed in 23 infants and resulted in further improvement in cerebral hemodynamics. Finally, 73% of the infants made a good recovery.

Conclusions: Children with acute bilateral HSD have a high incidence of increased intracranial pressure as assessed by TCD. Surgical evacuation improves cerebral hemodynamics. TCD could be used for assessing the need for, and the efficiency of surgical drainage.

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