Ultrasound-guided superior laryngeal nerve block can reduce coughing scores, decrease the incidence of hypoxemia, and shorten examination times during bronchoscopy: A randomized controlled trial
1 Department of Anesthesiology, Fourth Hospital of Hebei Medical University, 12 Jiankang Road, Shijiazhuang, Hebei 050011, China.
2 Department of Anesthesiology, Fourth Hospital of Hebei Medical University, 12 Jiankang Road, Shijiazhuang, Hebei 050011, China. Electronic address: fffjf2008@sohu.com.
3 Department of Respiratory, Fourth Hospital of Hebei Medical University, 12 Jiankang Road, Shijiazhuang, Hebei 050011, China.