eISSN: 1731-2515
ISSN: 0209-1712
Anestezjologia Intensywna Terapia
Bieżący numer Archiwum O czasopiśmie Rada naukowa Recenzenci Prenumerata Kontakt Zasady publikacji prac
Panel Redakcyjny
Zgłaszanie i recenzowanie prac online
3/2021
vol. 53
 
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Artykuł oryginalny

Passive leg raising in brain injury patients within the neurointensive care unit. A prospective trial

Marlies Bauer
1
,
Daniel Basic
2
,
Marina Riedmann
3
,
Elke Muench
4
,
Ludwig Schuerer
5
,
Claudius Thomé
1
,
Christian F. Freyschlag
1

  1. Department of Neurosurgery, Medical University Innsbruck, Austria
  2. University Clinic of Internal Medicine III, Cardiology and Angiology, Medical University Innsbruck, Austria
  3. Department of Medical Statistics, Informatics and Health Economics, Medical University Innsbruck, Austria
  4. Gesundheitszentrum Weinheim, Rhein-Neckar, Germany
  5. Department of Neurosurgery, Klinikum Bogenhausen, Technical University Munich, Germany
Anestezjologia Intensywna Terapia 2021; 53, 3: 200–206
Data publikacji online: 2021/10/27
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Introduction
In critically ill brain-injured patients maintaining balanced fluid management is a crucial part of critical care. Many factors influence the relationship between fluid management, cerebral blood flow and cerebral oxygenation. Passive leg raising (PLR)-induced changes predict fluid responsiveness in the majority of non-neurological ICU patients. In patients with intracranial lesions, PLR testing has been hypothesized to increase intracranial pressure (ICP), although data are lacking. We wanted to investigate the feasibility of PLR with expected intracranial pressure increase, according to the higher cerebral blood volume. This should be self-limiting in patients with intact cerebral autoregulation.

Material and methods
We prospectively included patients with traumatic brain injury (TBI) or aneurysmal subarachnoid hemorrhage (aSAH) in this pilot trial. PLR was performed within 48 hours after the initial diagnosis and on days 5-8. All patients had ICP monitoring. Absence of intracranial hypertension (defined as ICP < 25 mm Hg) was considered a positive test result.

Results
Ten patients were recruited for this study. The cohort consisted of 6 male patients with TBI and 4 female patients with aSAH. Mean patient age was 55.6 years (range 35–76). Overall, 18 tests could be performed, of which only one had to be terminated due to temporarily elevated ICP. 9 out of 10 patients had no intracranial hypertension during the acute (mean ICP increase 8.45 mm Hg, range 4–16) or during the subacute phase (mean ICP increase 9.12 mm Hg, range 3–18).

Conclusions
PLR is feasible in patients with intracranial pathology to assess fluid responsiveness and provide optimized patient volume management without increasing the risk of persistent intracranial hypertension.

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