Susmita Bhattacharyya

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A receiver autonomous integrity monitoring (RAIM) algorithm for vector tracking loop receivers is developed. It is shown that vector RAIM is not a simple remapping of ideas from scalar loop RAIM. Notably, it is shown that pseudorange residuals are not ideal for generating the test statistic in a vector receiver. Also, since vector receivers with integrity(More)
OBJECTIVES Pregabalin and clonidine have anti-nociceptive properties. This study assesses their efficacy in prolonging the analgesic effect of spinal anesthesia and post-operative analgesic requirement in patients undergoing vaginal hysterectomy. MATERIALS AND METHODS A total of 90 females in the age group of 30-60 years were randomly allocated in to(More)
BACKGROUND Spinal anesthesia is the technique of choice in transurethral resection of prostate (TURP). The major complication of spinal technique is risk of hypotension. Saddle block paralyzed pelvic muscles and sacral nerve roots and hemodynamic derangement is less. AIMS AND OBJECTIVES To compare the hemodynamic changes and adequate surgical condition(More)
Background: General Anaesthesia with controlled ventilation is the conventional technique for thyroid surgery. But this surgery can also be performed under regional anaesthesia with conscious sedation. AimTo observe the operative condition and patient safety for thyroid surgery performed under regional anaesthesia with conscious sedation. Method: This(More)
Introduction: There are different methods to perform brachial plexus block. Interscalene and supraclavicular approaches are the most frequently used technique during upper limb surgeries.The aims of this study were to compare the onset and duration of sensory and motor block, hemodynamic parameters, sparing of analgesia in any dermatome and to observe any(More)
A receiver autonomous integrity monitoring (RAIM) algorithm is presented for extended Kalman filter (EKF)-based global navigation satellite system receivers. To this end, a novel method to bound the EKF mean position error is developed under the assumption of step and ascending ramp fault profiles. The calculated mean position error bound is subsequently(More)
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