Search results for " Propofol"

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Cerebral haemodynamic changes during propofol-remifentanil or sevoflurane anaesthesia: transcranial Doppler study under bispectral index monitoring

2006

Background. Sevoflurane or propofol–remifentanil-based anaesthetic regimens represent modern techniques for neurosurgical anaesthesia. Nevertheless, there are potential differences related to their activity on the cerebrovascular system. The magnitude of such difference is not completely known. Methods. In total 40 patients, treated for spinal or maxillo-facial disorders, were randomly allocated to either i.v. propofol–remifentanil or inhalational sevoflurane anaesthesia. Transcranial Doppler was used to assess changes in cerebral blood flow velocity, carbon dioxide reactivity, cerebral autoregulation and the bispectral index to assess the depth of anaesthesia. Results. Time-averaged mean f…

MaleUltrasonography Doppler TranscranialHemodynamicsBlood PressurePiperidinesHeart RateMedicineHomeostasisProspective StudiesPropofolUltrasonographyIntraoperativeAdult Anesthetics; Combined; pharmacology Anesthetics; Inhalation; Intravenous; pharmacology Blood Flow Velocity; drug effects Blood Pressure; drug effects Carbon Dioxide; physiology Cerebrovascular Circulation; drug effects Electroencephalography Female Heart Rate; drug effects Homeostasis; drug effects Humans Male Methyl Ethers; pharmacology Middle Aged Monitoring; Intraoperative; methods Piperidines; pharmacology Propofol; pharmacology Prospective Studies Ultrasonography; Doppler; TranscranialCombineddrug effectDopplerElectroencephalographyMiddle AgedAnesthetics CombinedCerebral blood flowInhalationBispectral indexAnesthesiaCerebrovascular CirculationAnesthetics InhalationmethodFemaleIntravenousPropofolAnesthetics IntravenousBlood Flow Velocitymedicine.drugHumanMethyl EthersAdultMonitoringRemifentanilIntravenouTranscranialCerebral autoregulationtranscranial DopplerSevofluranemethodsRemifentanilSevofluranePiperidineMonitoring IntraoperativeHomeostasiHumansAnestheticsbusiness.industryAnestheticCarbon DioxideTranscranial DopplerProspective StudieAnesthesiology and Pain MedicineMethyl Etherdrug effectsphysiologypharmacologybusiness
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Propofol sedation reduces diaphragm activity in spontaneously breathing patients: ultrasound assessment.

2017

BACKGROUND: The diaphragm is the most important respiratory muscle in humans, and the close relationship between inspired volume and diaphragmatic movement in normal subjects has led to investigations into diaphragmatic activity using ultrasound, during spontaneous breathing and sedative drug infusion. METHODS: A total of 36 consecutive patients undergoing diagnostic procedures under deep propofol sedation were studied. Ultrasound measurements included the following: diaphragmatic thickening end-inspiration (TEI) and endexpiration (TEE). Diaphragmatic thickening fraction (DTF) was calculated from [(TEI TEE) / TEE] at various time points (at T0 basal; at T1 during propofol infusion; at T2 aw…

MaleDeep sedation; Diaphragm; Propofol; Ultrasonography; Anesthesiology and Pain MedicineRespiratory rateSedationdeep sedation; diaphragm; propofol; ultrasonographyDiaphragmHypnotics and SedativeDiaphragmatic breathing03 medical and health sciences0302 clinical medicine030202 anesthesiologySettore MED/41 - ANESTESIOLOGIARespiratory muscleMedicineHumansHypnotics and SedativesProspective StudiesPropofolUltrasonographybusiness.industryRespirationUltrasound030208 emergency & critical care medicineMiddle AgedDiaphragm (structural system)Prospective StudieAnesthesiology and Pain MedicineAnesthesiaBreathingFemalemedicine.symptomDeep SedationbusinessPropofolmedicine.drugHumanMinerva anestesiologica
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