Portable Infrared Pupillometer in Patients With Subarachnoid Hemorrhage: Prognostic Value and Circadian Rhythm of the Neurological Pupil Index (NPi)
Background: Portable automated infrared pupillometry is becoming increasingly popular. To generate an objective reference base, the Neurological Pupil index (NPi) which combines different values of the pupillary light reflex is being introduced into clinical practice. In this explorative study, we examined different aspects of the NPi in relation to clinical severity and outcome in patients with aneurysmal subarachnoid hemorrhage (aSAH). Materials and Methods: Patients with serial assessment of the NPi (NeurOptics pupillometer NPi-200, Irvine, CA) starting no later than day 2 after aSAH onset were included in the stud...
Source: Journal of Neurosurgical Anesthesiology - September 9, 2019 Category: Anesthesiology Tags: Clinical Reports Source Type: research

Performance of Electrical Velocimetry for Noninvasive Cardiac Output Measurements in Perioperative Patients After Subarachnoid Hemorrhage
We examined the usefulness of a noninvasive electrical velocimetry (EV) device based on the thoracic bioimpedance method for perioperative hemodynamic monitoring in patients after aneurysmal subarachnoid hemorrhage. Patients and Methods: In total, 18 patients who underwent surgical clipping or endovascular coiling for ruptured aneurysms were examined prospectively. Simultaneous cardiac index (CI) measurements obtained with EV (CIEV) and reference transpulmonary thermodilution (CITPTD) were compared. A total of 223 pairs of data were collected. Results: A significant correlation was found between CIEV and CITPTD (r=0....
Source: Journal of Neurosurgical Anesthesiology - September 9, 2019 Category: Anesthesiology Tags: Clinical Reports Source Type: research

Urgent Repositioning After Venous Air Embolism During Intracranial Surgery in the Seated Position: A Case Series
Conclusions: Extreme VAE during seated intracranial neurosurgical procedures is infrequent. Extreme VAE-associated CO2 exchange and hemodynamic consequences from VAE were transient, recovering quickly back to baseline without significant neurological or cardiopulmonary morbidity. (Source: Journal of Neurosurgical Anesthesiology)
Source: Journal of Neurosurgical Anesthesiology - September 9, 2019 Category: Anesthesiology Tags: Clinical Reports Source Type: research

Impact of CPAP on Forehead Near-infrared Spectroscopy Measurements in Patients With Acute Respiratory Failure: Truth or Illusion
Background: Critically ill patients with acute respiratory failure admitted to an intensive care unit are at high risk for cerebral hypoxia. We investigated the impact of continuous positive airway pressure (CPAP) therapy on regional cerebral tissue oxygenation (rSO2). Materials and Methods: In total, 40 extubated surgical intensive care unit patients requiring classic oxygen therapy (COT) for acute respiratory failure were examined. Near-infrared spectroscopy (INVOS 5100C, Covidien) was used for 30 minutes to detect bilateral rSO2 during COT via facemask (6 L/min) and CPAP therapy (40% fraction of inspired oxygen, ...
Source: Journal of Neurosurgical Anesthesiology - September 9, 2019 Category: Anesthesiology Tags: Clinical Investigations Source Type: research

A Survey on Fever Monitoring and Management in Patients With Acute Brain Injury: The SUMMA Study
Conclusions: In this survey we identified substantial variability in fever definition and application of temperature management in acute brain injury patients. These findings may be helpful in promoting educational interventions and in designing future studies on this topic. (Source: Journal of Neurosurgical Anesthesiology)
Source: Journal of Neurosurgical Anesthesiology - September 9, 2019 Category: Anesthesiology Tags: Clinical Investigations Source Type: research

Preoperative Gabapentin Administration Improves Acute Postoperative Analgesia in Patients Undergoing Craniotomy: A Randomized Controlled Trial
Background: Gabapentin is an adjuvant antiepileptic agent and helps to reduce acute postoperative pain in several surgery settings. However, the effect of gabapentin on postoperative pain from suboccipital or subtemporal craniotomy is not clear. Methods: The study was a single-center, randomized, placebo-controlled, and double-blinded trial. A total of 122 patients undergoing elective craniotomy by a suboccipital or subtemporal approach were randomly allocated to a placebo group and gabapentin group. The patients received gabapentin (600 mg, orally) the night before surgery and 2 hours before anesthesia induction in...
Source: Journal of Neurosurgical Anesthesiology - September 9, 2019 Category: Anesthesiology Tags: Clinical Investigations Source Type: research

Retrospective Analysis of Perioperative Variables Associated With Postoperative Delirium and Other Adverse Outcomes in Older Patients After Spine Surgery
Background: The aim of this retrospective study was to identify perioperative variables predictive of the development of delirium in older surgical patients after spine surgery. Materials and Methods: We collected preoperative, intraoperative, and postoperative data on patients 65 years of age and above having spine surgery between July 1, 2015 and March 15, 2017. The primary outcome was the development of postoperative delirium. Data were analyzed using univariate and multivariable analysis. Results: Among the 716 patients included in this study 127 (18%) developed postoperative delirium. On multivariable analysis...
Source: Journal of Neurosurgical Anesthesiology - September 9, 2019 Category: Anesthesiology Tags: Clinical Investigations Source Type: research

Can Cerebral Near-infrared Spectroscopy Predict Cerebral Ischemic Events in Neurosurgical Patients? A Narrative Review of the Literature
Cerebral near-infrared spectroscopy (NIRS) is considered a valuable noninvasive modality for cerebral oxygenation monitoring during cardiovascular surgery and cardiac arrest. We assessed the capability of cerebral NIRS to predict cerebral desaturation and the related neurological outcomes in neurosurgical patients. A literature search in different electronic medical databases was performed from inception to January 2018. A total of 286 citations were found and finally 48 studies were retrieved, only 7 of these were eligible and included for review. A meta-analysis was not feasible because of high heterogeneity of patientsâ...
Source: Journal of Neurosurgical Anesthesiology - September 9, 2019 Category: Anesthesiology Tags: Review Articles Source Type: research

Perspectives on Dexmedetomidine Use for Neurosurgical Patients
The α2-adrenergic receptor agonist dexmedetomidine has sedative, anxiolytic, analgesic, and sympatholytic effects. The potential advantages of neuroprotection, minimal impact on neuronal function, stable hemodynamics, opioid and anesthesia sparing effects, and minimal respiratory depression during awake procedures render it an effective anesthetic adjuvant in various neurosurgical settings. However, both the benefits and drawbacks of the use dexmedetomidine in neuroanesthesia should be considered. This narrative review will summarize the applications of dexmedetomidine in various neurosurgical settings, highlighting evide...
Source: Journal of Neurosurgical Anesthesiology - September 9, 2019 Category: Anesthesiology Tags: Review Articles Source Type: research

In Remembrance of Hiroshi Takeshita, MD, Pioneering Neuroanesthesiologist
No abstract available (Source: Journal of Neurosurgical Anesthesiology)
Source: Journal of Neurosurgical Anesthesiology - September 9, 2019 Category: Anesthesiology Tags: Editorials Source Type: research

General Anesthetic Agents Are Not Neuroprotective and May Be Neurotoxic
No abstract available (Source: Journal of Neurosurgical Anesthesiology)
Source: Journal of Neurosurgical Anesthesiology - September 9, 2019 Category: Anesthesiology Tags: Editorials Source Type: research

General Anesthetics Are Neuroprotective
No abstract available (Source: Journal of Neurosurgical Anesthesiology)
Source: Journal of Neurosurgical Anesthesiology - September 9, 2019 Category: Anesthesiology Tags: Editorials Source Type: research

Put the Kibosh On Bias
No abstract available (Source: Journal of Neurosurgical Anesthesiology)
Source: Journal of Neurosurgical Anesthesiology - September 9, 2019 Category: Anesthesiology Tags: Editorials Source Type: research

Scalp Block for Management of Subarachnoid Hemorrhage (SAH)-induced Headache
No abstract available (Source: Journal of Neurosurgical Anesthesiology)
Source: Journal of Neurosurgical Anesthesiology - June 11, 2019 Category: Anesthesiology Tags: Departments Source Type: research

Dilated Pupil as a Diagnostic Component of Brain Death—Does it Really Matter?
No abstract available (Source: Journal of Neurosurgical Anesthesiology)
Source: Journal of Neurosurgical Anesthesiology - June 11, 2019 Category: Anesthesiology Tags: Departments Source Type: research