Effect of Cryoanalgesia on Post-Thoracotomy Pain

  • Sirous Momenzadeh Department of Anesthesiology & Pain, Imam Hossein Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
  • Hedayatollah Elyasi Research Center of Anesthesiology, Taleghani Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
  • Naser Valaie Department of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
  • Badiozaman Radpey Department of Anesthesiology, Masih Daneshvari Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
  • Azizollah Abbasi Department of Thoracocic Surgery, Masih Daneshvari Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
  • Fatemeh Nematollahi Department of Anesthesiology & Pain, Imam Hossein Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
  • Hossein Mohammadinasab Research Center of Anesthesiology, Taleghani Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
Keywords: Cryoanalgesia, Pain, Thoracotomy

Abstract

We prepared this study to determine the effect of cryoanalgesia on post-thoracotomy pain. In this double-blinded randomized clinical trial, 60 patients who underwent thoracotomy were divided into two groups (control and cryoanalgesia). Visual Analogue Scale (VAS, 0-10) was used for the measurement of severity of post-thoracotomy pain. It was classified into three categories: 0-1 (mild), 2-3 (moderate), and 4-10 (severe). Pethidine (0.5-1 mg/kg) was administered in case of need for both groups. Patients were visited at the hospital a week later, and were contacted by phone at the first, second, and third months post-operatively. Intensity of pain in the control group was higher than the cryoanalgesia group in all visits the follow-up period. On the second day, the frequencies of severe pain (4-10) were 33.3% and 0 in the control and cryoanalgesia groups, respectively. The mild pain on the seventh day was 13.3% and 83.3% in the control and cryoanalgesia groups, respectively (P < 0.01). Pethidine consumption was 151.6 ± 27 mg in the control group and 87.5 ±48 mg in the cryoanalgesia group on the first day post-operation (P < 0.001). Cryoanalgesia is a useful technique with not serious side effects in order to alleviate post-thoracotomy pain and reduce the need for opiate consumption.

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How to Cite
1.
Momenzadeh S, Elyasi H, Valaie N, Radpey B, Abbasi A, Nematollahi F, Mohammadinasab H. Effect of Cryoanalgesia on Post-Thoracotomy Pain. Acta Med Iran. 49(4):241-245.
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