Bilateral vocal cord palsy (BVCP) is a rare complication of thyroid surgery, and it is confusing and frustrating for both patients and medical staff. We found postoperative vocal cord dysfunction using a McGrath videolaryngoscope from a patient with stridor and dyspnea after thyroidectomy performed with intraoperative recurrent laryngeal nerve monitoring. Soon after, the patient was diagnosed with BVCP by an ENT otolaryngologist using a laryngeal fiberscope. The patient underwent exploration and received a permanent tracheostoma. The possibility of false negative findings from intraoperative nerve monitoring should considered if there is suspicion of BVCP in a high risk patient after thyroidectomy. The McGrath video-laryngoscope can be useful for early discovery of postoperative vocal cord dysfunction.
Abstract-We report a STT-MRAM write-scheme, in which the length of the write-pulse is determined dynamically by sensing the status of MTJ cells. The proposed scheme can reduce the power consumption by eliminating unnecessary writing current after the switching has occurred. We also propose a reference cell design, which is optimized for the use in writecircuits. The performance of the proposed circuit was verified by SPICE level simulations of the circuit implemented in a 0.13 μm CMOS process.
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