Hai-Xiang Gao1,2, Jun-Jun Zhang1, Ning Liu3, Yi Wang4, Chun-Xiang Ma4, Lu-Lu Gao5, Qiang Liu6, Ting-Ting Zhang1, Yi-Ling Wang1,7, Wen-Qiang Bao8, Yu-Xiang Li9. 1. School of Nursing, Ningxia Medical University, 1160 Sheng Li Street, Yinchuan, 750004, China. 2. Intensive Care Unit, The Second People's Hospital of Yinchuan, 684 Bei Jing Street, Yinchuan, 750011, China. 3. Department of Pharmacology, Ningxia Medical University, 1160 Sheng Li Street, Yinchuan, 750004, China. 4. Pain Department, General Hospital of Ningxia Medical University, 804 Sheng Li Street, Yinchuan, 750004, China. 5. School of Public Health and Management, Ningxia Medical University, 1160 Sheng Li Street, Yinchuan, 750004, China. 6. School of Preclinical Medical Sciences, Ningxia Medical University, 1160 Sheng Li Street, Yinchuan, 750004, China. 7. Nursing Department, The First People's Hospital of Yinchuan, 2 Li Qun Street, Yinchuan, 750004, China. 8. Pain Department, General Hospital of Ningxia Medical University, 804 Sheng Li Street, Yinchuan, 750004, China. baowenqiang6678@163.com. 9. School of Nursing, Ningxia Medical University, 1160 Sheng Li Street, Yinchuan, 750004, China. li_yuxiang@163.com.
Abstract
BACKGROUND: The pain management of postherpetic neuralgia (PHN) remains a major challenge, with no immediate relief. Nitrous oxide/oxygen mixture has the advantages of quick analgesic effect and well-tolerated. The purpose of this study is to investigate the analgesic effect and safety of nitrous oxide/oxygen mixture in patients with PHN. METHODS/ DESIGN: This study is a single-center, two-group (1:1), randomized, placebo-controlled, double-blind clinical trial. A total of 42 patients with postherpetic neuralgia will be recruited and randomly divided into the intervention group and the control group. The control group will receive routine treatment plus oxygen, and the intervention group will receive routine treatment plus nitrous oxide/oxygen mixture. Data collectors, patients, and clinicians are all blind to the therapy. The outcomes of each group will be monitored at baseline (T0), 5 min (T1), and 15 min (T2) after the start of the therapy and at 5 min after the end of the therapy (T3). The primary outcome measure will be the pain intensity. Secondary outcomes included physiological parameters, adverse effects, patients' acceptance of analgesia, and satisfaction from patients. DISCUSSION: Previous studies have shown that nitrous oxide/oxygen mixture can effectively relieve cancer patients with breakthrough pain. This study will explore the analgesic effect of oxide/oxygen mixture on PHN. If beneficial to patients with PHN, it will contribute to the pain management of PHN. TRIAL REGISTRATION: Chinese Clinical Trial Register ChiCTR1900023730 . Registered on 9 June 2019.
RCT Entities:
BACKGROUND: The pain management of postherpetic neuralgia (PHN) remains a major challenge, with no immediate relief. Nitrous oxide/oxygen mixture has the advantages of quick analgesic effect and well-tolerated. The purpose of this study is to investigate the analgesic effect and safety of nitrous oxide/oxygen mixture in patients with PHN. METHODS/ DESIGN: This study is a single-center, two-group (1:1), randomized, placebo-controlled, double-blind clinical trial. A total of 42 patients with postherpetic neuralgia will be recruited and randomly divided into the intervention group and the control group. The control group will receive routine treatment plus oxygen, and the intervention group will receive routine treatment plus nitrous oxide/oxygen mixture. Data collectors, patients, and clinicians are all blind to the therapy. The outcomes of each group will be monitored at baseline (T0), 5 min (T1), and 15 min (T2) after the start of the therapy and at 5 min after the end of the therapy (T3). The primary outcome measure will be the pain intensity. Secondary outcomes included physiological parameters, adverse effects, patients' acceptance of analgesia, and satisfaction from patients. DISCUSSION: Previous studies have shown that nitrous oxide/oxygen mixture can effectively relieve cancerpatients with breakthrough pain. This study will explore the analgesic effect of oxide/oxygen mixture on PHN. If beneficial to patients with PHN, it will contribute to the pain management of PHN. TRIAL REGISTRATION: Chinese Clinical Trial Register ChiCTR1900023730 . Registered on 9 June 2019.
Entities:
Keywords:
Analgesia; Nitrous oxide; Postherpetic neuralgia; Randomized control trial; Severe acute pain