Virology and safety profile of Molnupiravir at three different doses for treatment of SARS-CoV-2: a systematic review and meta-analysis.

Molnupiravir is incorporated into the viral genome, thereby increasing errors, mismatching, and misdirecting the viral polymerase thereby, halting viral RNA replication of SARS-CoV-2. Following PRISMA guidelines, a thorough literature search was performed on electronic and medical databases from December 2022 till January 2023. Molnupiravir 800 mg showed significance in creating viral RNA error rate at Day 5 (WMD: 4.91; 95% CI; [1.19, 8.63] p = 0.01; I2 = 0%). Similarly, at 400 mg, Molnupiravir creates an RNA error rate (WMD: 2.27; 95% CI; 2.27 [0.50, 4.65] p = 0.02; I2 = 0%). Furthermore, exhibit a significant outcome for mean change in SARS-CoV-2 RNA viral load from baseline in nasopharyngeal sample at 800 mg Molnupiravir on Day 3 (WMD: -0.22; 95% CI; [-0.35, -0.08] p = 0.002; I2 = 0%), Day 5 (WMD: -0.32; 95% CI; [-0.53, -0.11] p = 0.003; I2 = 24%) and overall pooled analysis (WMD: -0.17; 95% CI; [-0.29, 0.33] p = 0.003; I2 = 32%). Moreover, Molnupiravir 400 mg significantly reduced the incidence of death compared to the placebo group (RR: 0.17; 95% CI; [0.07, 0.43] p = 0.0002; I2 = 0%). Molnupiravir effectively treats SARS-CoV-2 patients by eliminating the virus from the host.

Neurophysiological monitoring of the spinal sensory and motor pathways during embolization of spinal arteriovenous malformations--propofol: a safe alternative.

INTRODUCTION: Embolization of a spinal cord arteriovenous malformation (AVM) is considered a high-risk procedure due to the potential risk of spinal cord injury. We present two cases illustrating the benefits of utilizing pharmacologic provocative testing under general anesthesia with continuous neurophysiologic monitoring of somatosensory evoked potentials (SSEPs) and transcranial electrical motor evoked potentials (TCeMEPs) to identify the functional territory of the catheterized vessels prior to embolization. CLINICAL PRESENTATION: Case #1: A 28-year-old male presented with a progressive right lower leg numbness followed by weakness with impaired sphincter control. The MRI and angiogram of the spine showed an arteriovenous malformation (type 4) (subtype 2). Case #2: A 31-year-old male presented with sudden occipital, neck, right shoulder and back pain. He was neurologically intact. MRI and angiogram showed a predominantly right sided arteriovenous malformation. INTERVENTIONAL PROCEDURE: After intubation, bilateral posterior tibial and median nerve SSEPs were recorded. TCeMEP and electromyogram (EMG) were monitored from upper and lower extremity muscles bilaterally. Total intravenous anesthesia was used with propofol and remifentanil infusion. Neuromuscular blockade was used only for initial intubation. A train of four was maintained during the procedure. Pre-incision baselines were obtained with good morphology of waveforms. Selective spinal Wada tests were performed prior to embolization with lidocaine and propofol. Neurophysiological monitoring was performed for any changes. RESULTS: Complete occlusion of the AVM was achieved. As no changes occurred during provocative testing, all branches were treated with Onyx embolization. At six-month post-operative follow-up, both patients had total relief of symptoms. CONCLUSION: Multimodality IONM with continuous SSEP, TCeMEP, and EMG monitoring was utilized effectively during provocative testing with lidocaine and propofol. IONM helped in predicting and preventing post-operative neurological deficits due to ischemia to the spinal cord.

Early detection of pedicle screw-related spinal cord injury by continuous intraoperative neurophysiological monitoring (IONM).

Pedicle screw placement has a high risk of damaging the motor and sensory pathways due to the close proximity to the spinal cord and nerve roots. Early detection and prevention of injury can be achieved by utilizing Somatosensory Evoked Potentials (SSEP) and Transcranial electrical Motor Evoked Potentials (TCeMEP) during a scoliosis surgery. A 19-year-old female presented for correction of scoliosis. After intubation, electrodes were placed for upper and lower SSEPs, EMGs and TCeMEPs. Total intravenous anesthesia was used. Baseline SSEP and TCeMEP responses were present in all limbs. Eight pedicle screws were placed. After placing the last screw, TCeMEP signals were lost bilaterally in lower extremities. Surgery was paused. After removing all the screws TCeMEP responses returned to baseline in left lower limb but remained absent in right lower limb. A wake-up test was performed which was positive in her right leg. Blood pressure was increased and bolus of steroids was given. There was no improvement in right lower limb TCeMEP responses. Surgeon was advised to stop the surgery and proceed for MRI and follow-up. SSEP signals remained stable in all four-extremities. The surgical correction was cancelled. MRI revealed intramedullary spinal cord ischemic changes at T11. After extubation, patient was unable to move her right lower extremity with flaccid paralysis. She also complained about severe burning in her left lower extremity. The patient was taken for rehabilitation exercises. One week post-op, she was moving hip flexors and two weeks later had afull motor function, bilaterally. Real-time IONM was useful in early identification of spinal cord injury. Significant changes were seen in TCeMEP, without any change in SSEP. We highly recommend utilizing continuous TCeMEP and SSEP monitoring during pedicle screw placement for prevention of injury to the spinal cord. In this case, the patient would have been paralyzed post-operatively without the use of IONM.