Thrombolytic Therapy for Thrombosis of Prosthetic Mitral Valve - A Case Report -

인공 승모판막에 생긴 혈전의 혈전용해 치료 - 1례 보고 -

  • Kang, Shin-Kwang (Dept. of Thoracic and Cardiovascular Surgery, College of Medicine, Chungnam National University) ;
  • Kim, Si-Wook (Dept. of Thoracic and Cardiovascular Surgery, College of Medicine, Chungnam National University) ;
  • Won, Tae-Hee (Dept. of Thoracic and Cardiovascular Surgery, College of Medicine, Chungnam National University) ;
  • Ku, Kwan-Woo (Dept. of Thoracic and Cardiovascular Surgery, College of Medicine, Chungnam National University) ;
  • Na, Myung-Hoon (Dept. of Thoracic and Cardiovascular Surgery, College of Medicine, Chungnam National University) ;
  • Yu, Jae-Hyun (Dept. of Thoracic and Cardiovascular Surgery, College of Medicine, Chungnam National University) ;
  • Lim, Seung-Pyung (Dept. of Thoracic and Cardiovascular Surgery, College of Medicine, Chungnam National University) ;
  • Lee, Young (Dept. of Thoracic and Cardiovascular Surgery, College of Medicine, Chungnam National University) ;
  • Jeong, Jin-Ok (Dept. of Internal Medicine, College of Medicine, Chungnam National University)
  • 강신광 (충남대학교 의과대학 흉부외과학교실) ;
  • 김시욱 (충남대학교 의과대학 흉부외과학교실) ;
  • 원태희 (충남대학교 의과대학 흉부외과학교실) ;
  • 구관우 (충남대학교 의과대학 흉부외과학교실) ;
  • 나명훈 (충남대학교 의과대학 흉부외과학교실) ;
  • 유재현 (충남대학교 의과대학 흉부외과학교실) ;
  • 임승평 (충남대학교 의과대학 흉부외과학교실) ;
  • 이영 (충남대학교 의과대학 흉부외과학교실) ;
  • 정진옥 (충남대학교 의과대학 내과학교실)
  • Published : 2002.11.01

Abstract

Prosthetic valve thrombosis(PVT) may be a life-threatening complication requiring prompt intervention. This is a case report of thrombolytic therapy for thrombosis of prosthetic mitral valve. A 47 year-old male admitted to the emergency room for abrupt onset of dyspnea. He had undergone mitral valve replacement(On-Ⅹ valve, 29mm) for mitral stenosis 8 months ago. The patient's international normalized ratio(INR) on admission was 1.09. The mechanical clicks were muffled and rales were heard in both lung fields. A transesophageal echocardiography(TEE) revealed prosthetic valve thrombosis with increased transvalvular pressure gradient(34 mmHg). The patient's condition needed to intubation for mechanical ventilation due to hemodynamic compromise, however his wife and relatives refused the surgical intervention due to financial problems. The patient was transferred to the cardiac care unit and we decided to perform thrombolytic therapy. A bolus of 1,500,000 IU of urokinase was given, followed by a drip of 1,500,000 IU for 1 hour. The patient did not improved hemodynamically; therefore, we gave 100 mg of tissue plasminogen activator(t-PA) for over 2 hours. During that time mechanical clicks were audible and hemodynamics of the patient improved progressively. A TEE showed disappearance of thrombus and decreased pressure gradient(1.7 mmHg) after 6 hours of thrombolytic therapy. The patient was recovered without any neurologic sequale and was discharged with administration of warfarin.

인공판막 혈전증은 인공판막 치환술 후 발생할 수 있는 치명적인 합병증으로 즉각적인 처치를 요한다. 저자들은 인공 승모판막 혈전에 대해 혈전용해 치료를 시행하였기에 보고하는 바이다. 47세 남자 환자가 갑자기 시작된 호흡곤란으로 응급실로 내원하였다. 환자는 승모판막협착증으로 8 개월 전에 승모판막 치환술(On-X valve, 29 mm)을 시행받았으며, 내원 시 INR은 1.09였다. 청진 상 기계판막음이 잘 들리지 않았으며, 양측폐야에서 수포음이 들렸다. 경식도 심초음파에서 판막 혈전이 보였으며, 경판막 압력차는 34 mmHg로 증가되어 있었다. 환자는 상태 악화되어 기관 삽관과 기계호흡을 하였으나 경제적인 이유로 수술을 거부하였다. 환자를 심장 집중치료실로 옳기고 혈전용해 치료를 시작하였다. 유로키나제 1,500,000 IU를 정맥주사하고 이어서 1,500,000 IU를 점적하였다. 환자 상태가 호전이 없어 t-PA 100 mg을 2 시간에 걸쳐 점적하였다. 그동안 기계 판막음이 들리기 시작하였으며, 환자의 활력징후는 점차 회복되었다. 혈전용해 치료 6시간 후에 경식도 심초음파에서 판막 혈전은 사라졌고 경판막 압력차는 1.7 mmHg로 호전되었다. 환자는 신경학적 이상 없이 회복되었으며 경구 항응고제로 적정 INR을 유지하고 퇴원하였다.

Keywords

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