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Neurocritical Care

, Volume 13, Issue 3, pp 331–338 | Cite as

Continuous Cardiac Output and Near-Infrared Spectroscopy Monitoring to Assist in Management of Symptomatic Cerebral Vasospasm After Subarachnoid Hemorrhage

  • Tatsushi MutohEmail author
  • Tatsuya Ishikawa
  • Akifumi Suzuki
  • Nobuyuki Yasui
Original Article

Abstract

Background

Hemodynamic augmentation by increasing cardiac output with dobutamine (DOB) is believed to be a useful method of elevating decreased cerebral blood flow in the territory affected by vasospasm following aneurysmal subarachnoid hemorrhage (SAH). We described the clinical utility of uncalibrated radial artery-based pulse contour cardiac output (APCO) and near-infrared spectroscopy regional cerebral oxygen saturation (rSO2) monitoring for reversing vasospasm symptoms with DOB-induced hyperdynamic therapy.

Methods

Seven consecutive patients who underwent surgical clipping within 24 h of SAH onset and subsequently developed delayed ischemic neurological deficits attributable to vasospasm were investigated. They were treated with DOB administered at a dose of 3 μg/kg/min and then increased in 3 μg/kg/min increments until resolution of the symptoms. Continuous APCO and rSO2 measurements in conjunction with the assessment of clinical courses and outcomes were performed.

Results

In spasm-affected territories, decreased and/or fluctuating rSO2 was detected at baseline compared with recordings in other brain regions. Patients who exhibited rapid elevation of APCO in response to an incremental dose of DOB had subsequent uptake and stabilization of rSO2 followed by improvement of vasospasm-related clinical symptoms with a maximal dose of DOB, resulted in favorable functional outcomes thereafter. A fairly strong relationship was found between peak APCO slope and rSO2 elevation, with a significantly high area under the receiver operating characteristic curve predicting neurological improvement with DOB treatment.

Conclusions

Our clinical experience indicates that integrative monitoring with APCO and rSO2 may provide continuous, real-time, and clinically relevant information on the effectiveness of medical treatment of distal vessel vasospasm.

Keywords

Cardiac output Cerebral oximetry Hemodynamic augmentation Near-infrared spectroscopy Subarachnoid hemorrhage Vasospasm 

Notes

Acknowledgments

This work was supported by an institutional research Grant (H221001) from Akita Prefecture.

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Copyright information

© Springer Science+Business Media, LLC 2010

Authors and Affiliations

  • Tatsushi Mutoh
    • 1
    Email author
  • Tatsuya Ishikawa
    • 1
  • Akifumi Suzuki
    • 1
  • Nobuyuki Yasui
    • 1
  1. 1.Department of Surgical NeurologyResearch Institute for Brain and Blood Vessels-AkitaAkitaJapan

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