• Journal of Yeungnam Medical Science
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• 제11권1호
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• pp.181-185
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• 1994

저자들은 완전방실블록 환자에서 쌍극의 영구심장박동기를 이식후에도 계속되는 실신발작을 보여 단극의 영구심장박동기로 바꾼 후 그 증상이 소실된 예를 경험하였기에 이를 보고하는 바이다.

• 한국임상수의학회지
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• 제25권5호
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• pp.400-404
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• 2008

10살된 암컷 요오크셔테리어(체중 3 kg)가 심한 호흡곤란 청색증, 간헐성 발작 증상으로 진료가 의뢰되었다 신체검사 결과 지속성 맥박결손을 동반한 불규칙 서맥이 부정기적으로 관찰되었다. 심전도 검사에서 고도의 방실차단이, 방사선검사에서 중증 기관허탈이 진단되었다. 피부경유 심박조절 하에 자동확장 기관내 스텐트를 성공적으로 장착할 수 있었다.

• Journal of Ecology and Environment
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• 제30권2호
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• pp.201-207
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• 2007

Researchers have used a variety of methods to measure patterns of animal movement, including the use of spatial data (mapping the position of a moving animal at specified intervals) and direct estimation of travel path length by pacing under a moving animal or group. I collected movement data from five groups of siamangs (Symphalangus syndactylus) using two different methods concurrently to estimate the effects of the method of data collection on estimates of daily path length (DPL). Estimates of DPL produced from spatial data collected at 15-minute intervals were 12% lower than estimates of DPL produced by pacing under the traveling animal. The actual magnitude of the difference was correlated with the travel distance, but there was no correlation between the proportional difference and the travel distance. While the collection of spatial data is generally preferable, as spatial data permit additional analyses of patterns of movements in two or three dimensions, the relatively small difference between the DPL's produced using different methods suggests that pacing is an acceptable substitute where the collection of spatial data is impractical. I also subsampled the spatial data at increasing time intervals to assess the effect of sampling interval on the calculation of daily path lengths. Longer sampling intervals produced significantly shorter estimates of travel paths than shorter sampling intervals. These results suggest that spatial data should be collected at short time intervals wherever possible, and that sampling intervals should not exceed 30 minutes. Researchers should be cautious when comparing data generated using different methods.

• 대한화상학회지
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• 제24권2호
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• pp.50-52
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• 2021

Iatrogenic electrical burns that occur from the use of a defibrillator, a paddle-type cardiac shock device, have been reported in various forms. Electrical burns are usually conducted directly through the skin and are more damaging than scald burns or contact burns. A transcutaneous cardiac pacing device is a patch-type cardiac shock device that automatically delivers a shock when an abnormal heart rhythm is detected. We introduce a unique case of iatrogenic electrical burns caused by the transcutaneous pacing patch of a cardiac shock device. Electrical energy was converted into a spark due to foreign bodies deposited around the patch, resulting in damage to the peripheral area of the skin.

• Journal of Chest Surgery
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• 제24권9호
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• pp.843-852
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• 1991

We prospectively studied postoperative cardiac arrhythmia after open heart surgery to analyze the types and incidence of cardiac arrhythmia and to predict preoperative risk factors. And also we evaluated the effectiveness of atrial and ventricular epicardial electrodes which were placed during operation Between March 1990 and August 1990, We had operated on in 211 patients and we studied 201 consecutive patients excluding 10 patients. The study group included 99 males and 102 female patients, ages 1 month to 75 years[Mean$\pm$SD=28.0$\pm$21.7 years]. Postoperatively, all patients were regularly seen by the cardiac surgeon and cardiologist, They had continuous electrocardiographic monitoring for the first 3 days, initially in the intensive care unit and were checked routine electrocardiography on the postoperative 7 days, The postoperative cardiac arrhythmia were analyzed and possible associations of this arrhythmia with various pre, intra, and postoperative factors were studied by univariate and multivariate discriminant analysis, The overall incidence of postoperative cardiac arrhythmia except relative sinus bradycardia was 36.8%;[74/201], The incidence of postoperative cardiac arrhythmia in acyanotic congenital heart disease: 19.4%, cyanotic congenital heart disease: 20.8%, cardiac arrhythmia surgery: 33.3%, acquired valvular heart disease: 60.9% and coronary artery occlusive disease: 38.9%. Both univariate and multivariate studies indicated the pre operative symptom duration[p = 0013], the duration of medication[p=0.003], presence of preoperative arrhythmia[p<0.001] and pre-operative left atrial dimension in echocardiography to be the factor promoting postoperative cardiac arrhythmia. Multivariate discriminant analysis showed that the presence of preoperative cardiac arrhythmia, bypass time and the duration of preoperative symptom duration conveyed considerable risk factor on post-operative arrhythmia. The atrial wire electrodes were used diagnostically in 36 and were used therapeutically in 89 among 201 patients. Atrial pacing were used to treat relative sinus bradycardia, accelerated junctional tachycardia or premature atrial or ventricular contractions in 51 patients. Atrioventricular sequential pacing were used in 16 patients and ventricular pacing were used in 20 patients. Hemodynamics were evaluated in 2 patients of relative sinus bradycardia before and after atrial pacing. The atrial pacing increased the amount of cardiac output to 15% more. Because of their great utility in the diagnosis and treatment of arrhythmias, we conclude that routine placement of atrial and ventricular electrodes at the time of operation is indicated regardless of the nature of the open-heart procedure.

• Journal of Chest Surgery
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• 제10권2호
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• pp.219-225
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• 1977

Pacemaker therapy has been established as a routine procedure in a variety of disturbances of :cardiac rhythm. Cardiac pacing has greatly reduced the mortality rate in patients suffering from bradyarrhythmias complicated by Stokes-Adams attacks. However, in spite of the simplicity of the treatment and reliability of the devices available today, patients and physicians alike are invovled in a multitde of pacemaker specific problems. Clinical experience with permanent transvenous pacing during a 3 year period is presented. A total of 20 pacemaker operations were performed in 13 patients. The complications in our 20 pacemaker operations were headed by skin ulceration of 3 generator pockets and early dislocation of 3 electrodes. In an additional 2 patient, stimulation of diaphragm due to a position of electrode in the coronary sinus was noticed in one and battery failure of pulse generator was detected in the other. Literatures were reviewed.

• Journal of Chest Surgery
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• 제30권10호
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• pp.1032-1035
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• 1997

우심실내에 위치한 영구 인공심박동기 전극의 진균감염은 매우 드물다. 최근 30세의 남자환자에서 3년전 우심실내에 위치시킨 인공심박동기의 심실전극에 국균증에 감염된 거대혈전을 형성한 경우를 인공심폐기를 이용한 체외순환하에서 전극선을 포함한 혈전제거술을 시행한 바 있다 또한 례장생검에콕 국균증 감염이 증명되었다.

• Journal of Chest Surgery
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• 제35권11호
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• pp.831-834
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• 2002

감염된 심박조율기의 부분적 제거 후에 발생되는 재감염율은 51%에서 77%에 이르기 때문에 심박조율기의 어느 부위라도 감염이 된다면 모든 심박조율기의 하드웨어는 제거되어야 한다. 심폐기 가동하에서 감염된 심박조율기를 제거하는 것은 감염과 증식물의 확산 뿐만 아니라 기계적 손상을 방지 할 수 있다. 저자 등은 좌쇄골하 정맥에서 심장내로 이동된, 감염된 경정맥 심박조율기 도관에 의해 발생한 심내막염의 1예를 보고 한다. 심장내로 이동된 심박조율기 도관과 증식물이 부착된 전극은 심폐우회를 이용하여 제거하였다.

• 한국임상수의학회지
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• 제24권3호
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• pp.414-418
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• 2007

2.8살 된 암컷 비글종 개 (체중 11kg)가 운동 불내성과 간헐적인 실신증상을 보여 내원하였다. 청진상 불규칙하게 불규칙한 심장박동과 지속적인 맥박결손이 청진되었다. 심전도상에 3도 방실차단 소견이 관찰되었다. 환자는 임상증상 개선을 위하여 경정맥을 통한 영구적인 박동조절기(pacemaker)를 장착하였다. 그 결과 환자는 더 이상 실신증상을 보이지 않았고 주인과 함께 산책을 나갈 수 있을 만큼 임상증상이 개선되었다. 현재까지 박동조절기 장착과 관련된 합병증 없이 잘 생존하고 있다.

• 대한의용생체공학회:의공학회지
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• 제40권1호
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• pp.32-37
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• 2019

In this study, we designed a blending algorithm for rate adaptive pacing for cardiac pacemaker. Generally, rate adaptive pacing (RAP) is applied to patients whose heart rate does not rise during exercise for chronotropic incompetence (CI) patient. It is very important to develop an algorithm for RAP that can be properly applied to CI patients. In order to design an RAP algorithm we used dual sensors. Firstly, we designed a bio-signal measurement system based on the dual sensors, which are accelerometer and respiratory system. Secondly, we conducted treadmill test for the simulation experiment while using 3-lead ECG as reference. Finally, we designed a blending algorithm based on activation state of the dual sensors. The proposed blending algorithm was subdivided into three sections based on the accelerometer signal, which are rapidly increased section (W1), hardly changed section (W2), and decreased section (W3). Each weight is set aside for each section. To evaluate this algorithm, ten healthy adult males were participated. The correlation and Root Mean Square Error between the proposed algorithm and the reference were compared, and shown to be r=0.88 and 2.82 bpm, respectively. These results show that the proposed blending algorithm of dual sensors enables proper tracking of the heart rate during exercise. Also, it shows the possibility that the proposed blending algorithm can be applied to improve quality of life of the chronotropic incompetence patient.