Paradoxical Upper Airway Obstruction and Central Sleep Apnea Developed After Anterior Cervical Spine Fusion

전방경추융합술 후 발생한 역설상기도폐쇄 및 중추성 수면 무호흡

  • Lee, Sang Haak (Department of Internal Medicine, The Catholic University of Korea, College of Medicine) ;
  • Choi, Young Mee (Department of Internal Medicine, The Maryknoll Hospital) ;
  • Park, Ye Ree (Department of Internal Medicine, The Catholic University of Korea, College of Medicine) ;
  • Kang, Ji Ho (Department of Internal Medicine, The Catholic University of Korea, College of Medicine) ;
  • Kim, Young Kyoon (Department of Internal Medicine, The Catholic University of Korea, College of Medicine) ;
  • Kim, Kwan Hyoung (Department of Internal Medicine, The Catholic University of Korea, College of Medicine) ;
  • Song, Jeong Sup (Department of Internal Medicine, The Catholic University of Korea, College of Medicine) ;
  • Park, Sung Hak (Department of Internal Medicine, The Catholic University of Korea, College of Medicine) ;
  • Moon, Hwa Sik (Department of Internal Medicine, The Catholic University of Korea, College of Medicine)
  • 이상학 (가톨릭대학교 의과대학 내과학교실) ;
  • 최영미 (메리놀병원 내과) ;
  • 박예리 (가톨릭대학교 의과대학 내과학교실) ;
  • 강지호 (가톨릭대학교 의과대학 내과학교실) ;
  • 김영균 (가톨릭대학교 의과대학 내과학교실) ;
  • 김관형 (가톨릭대학교 의과대학 내과학교실) ;
  • 송정섭 (가톨릭대학교 의과대학 내과학교실) ;
  • 박성학 (가톨릭대학교 의과대학 내과학교실) ;
  • 문화식 (가톨릭대학교 의과대학 내과학교실)
  • Received : 2005.01.17
  • Accepted : 2005.03.08
  • Published : 2005.03.30

Abstract

We report a case of a 48-year-old man with a paradoxic upper airway obstruction and central sleep apnea that developed after an anterior cervical spinal fusion. Nine months before being admitted to this hospital, he was diagnosed with a herniated intervertebral disc between the 5th and 6th cervical spine, and the first operation was carried out. Two months later, a pseudoarthrosis has developed and a second operation, an anterior interbody fusion of the C5 and C6 using autogenous strut bone graft, was performed. After the second operation, he began to complain of snoring, excessive daytime sleepiness, insomnia, and a bizarre sound heard near the upper airway during breathing. Nasopharyngoscope and magnetic resonance imaging disclosed a paradoxical narrowing of the nasopharynx during expiration. On the overnight polysomnography, the apnea index was 8.7/h (central apnea, 7.0/h; obstructive apnea, 1.7/h). Nasal continuous positive airway pressure was applied, but he complained of pressure-intolerance, and laser-assisted uvulopalatoplasty was then performed. Two months after surgery, clinical symptoms as well as the apneas had improved markedly. We suggest that this paradoxic upper airway obstruction might be associated with the anterior cervical spinal surgery even though the mechanism is unclear. This case also emphasizes that an upper airway obstruction can contribute to the development of central sleep apnea.

전방경추융합술을 시행한 후 역설상기도폐쇄와 중추성 무호흡이 발생하였던 증례를 경험하여 이를 보고하고자 한다. 환자는 48세 남자로 본원으로 전원되기 9개월 전에 5번과 6번 경추사이의 추간판탈출증으로 수술을 시행받았으며, 내원 2개월 전에는 가성관절증이 발생하여 자가골이식과 함께 전방접근법으로 5번과 6번 경추의 경추융합술을 시행받았다. 이 수술을 시행 후 환자는 코골이와 과도한 주간 졸음증, 불면증 등의 증세가 생겼으며 호흡시에 상기도부위에서 이상한 소리가 발생하였다. 코인두경 및 자기공명영상으로 호기시 코인두부위의 역설적 협착소견을 관찰할 수 있었고, 철야 수면다원검사에서 무호흡지수는 8.7/시간 (중추성 무호흡, 7.0/시간; 폐쇄성 무호흡, 1.7/시간)이었다. 경비적 지속성 기도양압치료를 시작하였으나 환자가 압력을 못견뎌하여 레이저목젖입천장성형술을 시행하였다. 수술 2개월 경과 후 무호흡과 더불어 임상증세는 현격히 호전되었다. 저자들은 이러한 역설상기도폐쇄가 비록 그 기전이 명확하지는 않지만 전방경추융합술과 관련되어 있다고 추정한다. 또한 이러한 상기도 폐쇄가 중추성 수면 무호흡을 유발할 수 있다는 것을 보여주는 증례라고 생각한다.

Keywords

References

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