0000000000132759

AUTHOR

Daniel F. Hanley

showing 3 related works from this author

<title>Follow-up in patients with subdural haematomas using near-infrared spectroscopy (NIRS)</title>

1998

Secondary haemorrhage is an important cause of brain injury following initial therapy of subdural haematoma (SDH). Early identification and treatment of secondary haemorrhage improves neurologic outcome. Near infrared light at a wavelength of 760 nm shows a high absorption for haemoglobin. The difference in absorbance of light ((Delta) OD) at the wavelength of 760 nm between both hemispheres is measured to detect SDH. We have prospectively studied 20 patients with the CT diagnosis of SDH using near infrared spectroscopy (NIRS). Unilateral subdural haematomas were detected by NIRS in 15 out of 16 patients. Bilateral SDH were detected in 2 out of 3 patients. The median of (Delta) OD was reduc…

medicine.medical_specialtybusiness.industryVascular diseaseTraumatic brain injuryNear-infrared spectroscopyClinical courseSubdural haematomamedicine.diseaseSurgerysurgical procedures operativeHematomaHospital dischargeMedicineIn patientbusinessNuclear medicinePhoton Propagation in Tissues IV
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<title>Noninvasive detection of intracerebral hemorrhage using near-infrared spectroscopy (NIRS)</title>

1998

Intracerebral Hemorrhage (IH) is an important cause of secondary brain injury in neurosurgical patients. Early identification and treatment improve neurologic outcome. We have tested Near Infrared Spectroscopy (NIRS) as an alternative noninvasive diagnostic tool compared to CT-Scans to detect IH. We prospectively studied 212 patients with neurologic symptoms associated with intracranial pathology before performing a CT-scan. NIRS signals indicated pathologies in 181 cases (sensitivity 0.96; specificity 0.29). In a subgroup of subdural hematomas NIRS detected 45 of 46 hematomas (sensitivity 0.96; specificity 0.79). Identification of intracerebral hemorrhage using NIRS has the potential to al…

Intracerebral hemorrhageIntracranial pathologymedicine.medical_specialtybusiness.industryVascular diseaseTraumatic brain injuryNon invasiveHead injurymedicine.diseaseSubdural Hematomassurgical procedures operativeEpidural hematomaAnesthesiaMedicineRadiologybusinessSPIE Proceedings
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Quantitative EEG during Early Recovery from Hypoxic-Ischemic Injury in Immature Piglets: Burst Occurrence and Duration

1999

This study examined the course of EEG recovery in an animal model of hypoxic-ischemic injury. The model used periods of hypoxia, room air and asphyxia to induce cardiac arrest. One-week-old piglets (n = 16) were exposed to a period of hypoxia, room air and complete asphyxia for 7 minutes. After cardiac arrest and resuscitation, two EEG features were evaluated as prognostic indicators of behavioral outcome as assessed by a neuroscore at 24 hours after insult. A prominent EEG feature was the number and duration of bursts evident during recovery. Episodes of bursting were detected through the thresholds on sustained periods of elevated power. After the animal was resuscitated, the EEG was moni…

AsphyxiaResuscitationmedicine.diagnostic_testSwinebusiness.industryElectroencephalographyElectroencephalographyHypoxia (medical)030227 psychiatryQuantitative eeg03 medical and health sciencesBursting0302 clinical medicineAnimal modelAnimals NewbornAnesthesiaHypoxia-Ischemia BrainRoom air distributionmedicineAnimalsNeurology (clinical)medicine.symptombusiness030217 neurology & neurosurgeryClinical Electroencephalography
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