Publications by authors named "Sudhir Venkataramaiah"

Background: An anesthesia information management system (AIMS) can be used to assess operating room utilization. The aim of this study was to assess neurosurgery OR utilization patterns using an AIMS.

Methods: This retrospective audit was performed at a tertiary neurosciences university hospital over a 1-year period.

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Background: Preoperative clinical and imaging findings predict neurological outcomes in patients with traumatic brain injury (TBI). Similarly, intraoperative factors such as blood loss and hypotension can also affect outcomes. However, there is not much data regarding the influence of perioperative variables on clinical outcomes in patients with extradural hematoma (EDH).

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Objectives: Patient satisfaction is an indicator of the quality of healthcare. It can improve treatment adherence and health outcomes. This study aimed to determine the incidence, predictive factors, and impact of post-operative patient dissatisfaction with perioperative care after cranial neurosurgery.

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Background: Magnetic resonance imaging (MRI) under sedation requires faster recovery for early discharge and feeding resumption in children with neuropsychiatric disorders. The use of dexmedetomidine alone results in delayed recovery. Propofol, when used alone, can cause hypotension and respiratory depression.

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A substantial proportion of patients with treatment resistant schizophrenia do not respond well or partially to clozapine, with a subset that does not tolerate an adequate trial of clozapine. Electroconvulsive therapy (ECT) is regarded as one of the augmenting options, but there is a lack of high-quality evidence for this practice. This protocol describes a double-blind randomised sham-controlled modified-ECT trial to evaluate its efficacy in patients with clozapine resistant/intolerant schizophrenia.

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Background: Stress response to surgery is mediated by the sympathetic nervous system and manifests as changes in hemodynamic and neuroendocrine parameters. Recently, the surgical pleth index (SPI) is employed for objective and continuous monitoring of nociceptive response during surgery. Opioids are the mainstay of managing stress response to nociception during the perioperative period.

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Background: To compare the antidepressant effects and cognitive adverse effects of intravenous ketamine infusion and Electro-convulsive therapy (ECT) in persons with severe depressive episodes.

Methods: This assessor-blinded randomized control trial included 25 patients (either sex; 18-65 years) meeting ICD-10 criteria for severe depression (bipolar or unipolar). Patients received either ECT (n = 13) or intravenous infusions of ketamine hydrochloride (0.

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Background: Intracranial tumors are the most common pediatric solid tumors. Only one-third of these tumors arise from the supratentorial compartment. The abnormal intracranial tumors are unusual but can bleed to an extent causing hemorrhagic shock necessitating blood transfusion in the perioperative period.

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Background: The short-term neurologic outcome of infants undergoing brain tumor surgery depends on various perioperative factors. This study was undertaken to analyze the effects of perioperative variables on the postoperative neurologic outcome in infants undergoing brain tumor surgery.

Methods: We retrospectively reviewed the chart of infants undergoing craniotomy for brain tumor removal from 2000 to 2017.

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Background: Moderate to severe pain is common despite the use of potent opioids during craniotomies. Non-opioid agents such as dexmedetomidine reduce undesirable opioid effects and are successfully used as primary analgesic during bariatric surgeries. This study assessed the feasibility of conducting a large randomised controlled trial comparing fentanyl with dexmedetomidine for perioperative analgesia during craniotomy.

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Background: Intra-arterial nimodipine (IaN) is used in the management of cerebral vasospasm after aneurysmal subarachnoid hemorrhage (aSAH). The impact of IaN therapy on regional cerebral oxygen saturation (rScO2) assessed by near infra-red spectroscopy, and dynamic cardiac indices, is currently unknown. This study assessed the effect of IaN on rScO2 and systemic hemodynamic indices during IaN therapy for cerebral vasospasm after aSAH.

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Objective: Children with neurological disabilities are at an increased risk of airway complications during anaesthesia for magnetic resonance imaging (MRI) with spontaneous respiration. The primary objective of this study was to evaluate airway dimensions during propofol and dexmedetomidine sedation for MRI in children with neurological disabilities. The secondary objective was to examine the adverse respiratory and sedation-related events.

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Background: During electroconvulsive therapy (ECT) sessions, we observed that the time taken for the return of pupillary response to light (ROPL) outlasted both the electroencephalography (EEG) and the motor seizure duration after the delivery of the electrical stimulus to produce convulsions.

Objective: The objective of this study was to investigate whether ROPL can be used as a marker of cessation of seizure activity in the brain after ECT and also to study the effect of atropine premedication on seizure activity during ECT.

Methods: Forty-one patients underwent 82 sessions of ECT in a cross-over design study.

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Background: Electroconvulsive therapy (ECT) causes acute changes in cerebral perfusion and oxygenation. Near-infrared spectroscopy is a novel, noninvasive technique to assess cerebral oxygen saturation (cSO2). We hypothesized that cSO2 increases during ECT and more so with atropine premedication and decreases when systemic desaturation (peripheral oxygen saturation <90%) occurs during ECT.

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Objectives: Electroconvulsive therapy (ECT) results in significant cardiovascular changes. The acute cardiac autonomic changes during ECT remain unexplored. The primary objective of this study was to compare autonomic dysfunction with and without atropine premedication during ECT and secondarily to evaluate dysautonomia across psychiatric diagnoses before and after ECT.

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Anesthetic management of patients with aneurysmal subarachnoid hemorrhage is challenging because of the emergency nature of the presentation, complex pathology, varied intracranial and systemic manifestations and need for special requirements during the course of management. Successful perioperative outcome depends on overcoming these challenges by thorough understanding of pathophysiology of Subarachnoid hemorrhage, knowledge about associated complications, preoperative optimization, choice of definitive therapy, a good anesthetic and surgical technique, vigilant monitoring and optimal postoperative care. Guidelines based on randomized studies and provided by various societies are helpful in the routine management of these patients and wherever there is a lack of high quality evidence, the available data is provided for practical management.

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