1. patient refusal, inability to consent or cooperate 2. claustrophobia 3. body habitus not allowing physical fit into covid barrier box 4. history of documented difficult airway 5. risk factors for difficult airway (mallampati 3 or 4, thyromental distance less than 6 cm, interincisor distance less than 4 cm, upper lip bite test 2 or 3, body mass index (bmi) 30 or above, macroglossia, airway edema, blood in airway, cervical immobility, or any other concerning features deemed by attending anesthesiologist) 6. risk factors for gastric aspiration 7. allergy to rocuronium anesthesiologist participant

1. patient refusal, inability to consent or cooperate 2. claustrophobia 3. body habitus not allowing physical fit into covid barrier box 4. history of documented difficult airway 5. risk factors for difficult airway (mallampati 3 or 4, thyromental distance less than 6 cm, interincisor distance less than 4 cm, upper lip bite test 2 or 3, body mass index (bmi) 30 or above, macroglossia, airway edema, blood in airway, cervical immobility, or any other concerning features deemed by attending anesthesiologist) 6. risk factors for gastric aspiration 7. allergy to rocuronium anesthesiologist participant

patient refusal, inability to consent or cooperate claustrophobia body habitus not allowing physical fit into covid barrier box history of documented difficult airway risk factors for difficult airway (mallampati 3 or 4, thyromental distance less than 6 cm, interincisor distance less than 4 cm, upper lip bite test 2 or 3, body mass index (bmi) 30 or above, macroglossia, airway edema, blood in airway, cervical immobility, or any other concerning features deemed by attending anesthesiologist) risk factors for gastric aspiration allergy to rocuronium anesthesiologist participant

patient refusal, inability to consent or cooperate claustrophobia body habitus not allowing physical fit into covid barrier box history of documented difficult airway risk factors for difficult airway (mallampati 3 or 4, thyromental distance less than 6 cm, interincisor distance less than 4 cm, upper lip bite test 2 or 3, body mass index (bmi) 30 or above, macroglossia, airway edema, blood in airway, cervical immobility, or any other concerning features deemed by attending anesthesiologist) risk factors for gastric aspiration allergy to rocuronium anesthesiologist participant

1. patient refusal, inability to consent or cooperate 2. claustrophobia 3. body habitus not allowing physical fit into covid barrier box 4. history of documented difficult airway 5. risk factors for difficult airway (mallampati 3 or 4, thyromental distance less than 6 cm, interincisor distance less than 4 cm, upper lip bite test 2 or 3, body mass index (bmi) 30 or above, macroglossia, airway edema, blood in airway, cervical immobility, or any other concerning features deemed by attending anesthesiologist) 6. risk factors for gastric aspiration 7. allergy to rocuronium anesthesiologist participant

1. patient refusal, inability to consent or cooperate 2. claustrophobia 3. body habitus not allowing physical fit into covid barrier box 4. history of documented difficult airway 5. risk factors for difficult airway (mallampati 3 or 4, thyromental distance less than 6 cm, interincisor distance less than 4 cm, upper lip bite test 2 or 3, body mass index (bmi) 30 or above, macroglossia, airway edema, blood in airway, cervical immobility, or any other concerning features deemed by attending anesthesiologist) 6. risk factors for gastric aspiration 7. allergy to rocuronium anesthesiologist participant