• 대한두경부종양학회지
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• 제24권2호
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• pp.145-150
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• 2008

• Asian Pacific Journal of Cancer Prevention
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• 제15권11호
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• pp.4683-4688
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• 2014

Background: Breast conservation treatment (BCT) has long been recognised to provide survival outcomes equivalent to mastectomy for the treatment of breast cancer. However, published reports of BCT rates in Asian communities are lower than those from Western countries. This study sought to investigate the eligibility and utilisation of BCT in a predominantly Asian population. Materials and Methods: All patients treated surgically by a single surgeon at a private medical facility between 2009 and 2011 were included in the study. Patients were deemed to have successful BCT if they underwent breast conserving surgery with pathologic clear margins and completed all recommended adjuvant treatment. Those who did not complete adjuvant treatment were excluded from the analysis. Results: Data from a total of 161 patients who underwent treatment during the study period were analysed. The mean age was 48.8 years. One hundred and six patients (65.8%) were of Chinese ethnicity, 12 were Indian (7.5%), 11 were Malay (6.8%), 18 were Caucasian (11.2%) and 14 (8.7%) were of other Asian ethnicity. One hundred and thirty-eight women (85.7%) underwent BCT. Of the 23 (14.3%) who underwent mastectomy, 8 (5.4%) elected to undergo a mastectomy despite being eligible for BCT. In total, it was assessed that 146 of 161 patients (90.7%) were eligible for BCT and utilisation was 94.5%. Conclusions: In this study, eligibility, utilisation of BCT and eventual successful breast conservation rates are similar to published rates in Western communities. Additional research is needed to investigate the reasons for the lower published BCT rates in Asian countries and determine ways to improve them.

• Maxillofacial Plastic and Reconstructive Surgery
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• 제19권2호
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• pp.149-155
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• 1997

Ridge expansion osteotomy(REO) technique is a simple and more conservation method to widen a narrow alveolar ridge in the maxilla. This method is superior to drilling method in soft and narrow maxillary alveolar ridge and allows the surgeon to widen the ridge in routine office procedure. Therefore, it is the treatment of choice to implant the maxilla with narrow alveolar ridge. This article presents clinical cases and discusses the advantages, rationale and surgical protocol of REO technique.

• Journal of Chest Surgery
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• 제42권2호
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• pp.184-192
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• 2009

배경: 수혈의 부작용은 널리 알려져 있으나, 대부분의 개심술에서 수혈이 시행되고 있다. 동종 수혈 없이 심장수술이 가능한 지에 대하여 알아보고자 본 연구를 시행하였다. 대상 및 방법: 2007년 1월부터 8월까지 다양한 혈액보존법을 적용하여 연속적으로 개심술을 시행한 환자 44명을 대상으로 심페기군(Group I, 17명)과 무심폐기군(Group II, 27명) 두 군으로 나누어 후향적 연구를 시행하였다. 혈액보존법은 수술 중 자가 혈액 채취(intraoperative autologous donation), 자가수혈기(cell saver), 역행적 자가 혈액 충전법(retrograde autologous priming), 기존 초여과법(conventional ultrafiltration), 변형 초여과법(modified ultrafiltration) 등을 사용하였고 술 후 항빈혈약을 복용시켰다. 무혈 수술 가능여부, 동종 수혈 원인, 적혈구 용적률의 변화, 술 후 출혈량 등 수술 결과를 분석하여 비교하였다. 두 군간 비교가 적당치 않은 항목은 혈액보존법 적용 전 2006년 수술한 환자를 대조군(49명) I, II로 하여 각각 비교하였다. 결과: 대상환자 44명 중 40명(90.9%)에서 무혈수술이 가능하였으며 각 군의 무혈 수술 성공률은 심폐기군 88.2% (15/17), 무심폐기군 92.6% (25/27)로 두 군간 차이는 없었다(p=NS). 수혈 원인은 술 후 출혈 2명, 술 중 출혈 1명, 원칙 적용 실수 1명이었다. 수술 결과 및 술 후 총 흉관 배액량(심폐기군 $417{\pm}359mL$, 무심폐기군 $451{\pm}237mL$)은 두 군간 차이가 없었으나(p=NS), 각각의 대조군 I, II에 비해 통계적으로 유의하게 배액량이 적었다(p<0.05). 심폐기군에서 최저 적혈구 용적률은 심정지액 주입된 직후로 $16.4{\pm}2%$였고 두 군 모두 술 후 2개월째 수술 전 수준으로 회복되었다. 결론: 본 연구에서는 수술 중 자가 혈액 채취, 수술 중 자가수혈기, 역행적 자가 혈액 충전법, 기존 초여과법, 변형 초여과법 등을 사용하여 90.9%의 환자에서 무혈 수술이 가능하였다. 다양한 혈액보존법의 복합 적용이 가장 중요하며, 수술 시의 세심한 지혈 과정 그리고 수혈 기준의 완화 등을 통해 무혈 수술이 가능하다.

• Journal of Chest Surgery
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• 제23권2호
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• pp.268-274
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• 1990

Bleeding after cardiopulmonary bypass remains a cause for concern, requiring reexploration of the chest in approximately 3 percent of patients who have had operations on the heart. We examined the possibility that this problem might be alleviated by desmopressin acetate [DDAVP], synthetic vasopressin analogue that lacks vasoconstrictor activity. In a prospective, randomized trial, we studied the effect of intraoperative desmopressin acetate in 20 patients [the treated group 10 patients and the control group 10 patients] undergoing various cardiac operations requiring cardiopulmonary bypass. The result showed that the early postoperative [during first 24hrs] and mean postoperative blood loss [first 3 days] of the treated group were significantly reduced than the control group[447\ulcorner199ml in the treated group versus 746\ulcorner199ml in the treated group versus 746\ulcorner295 ml in the control group, p=0.014; mean\ulcornerstandard deviation and 675\ulcorner276 ml in the treated group versus 1006\ulcorner303 ml in control group, p=0.019]. The mean red-cell transfusion in first 3days were reduced in the treated group than the control group [3.3\ulcorner1.7 units vs 4.9\ulcorner1.7units, P=0.051]. There were no untoward side effects of desmopressin acetate. We conclude that the administration of desmopressin acetate can be recommended to reduce blood loss and blood conservation in patients undergoing cardiac operations.

• Korean Journal of Otorhinolaryngology-Head and Neck Surgery
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• 제61권12호
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• pp.669-673
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• 2018

Background and Objectives Tinnitus, a common complaint of workers who are exposed to noise, can cause substantial negative effects on the quality of life of these workers. The aim of this study was to analyze the characteristics of tinnitus in patients with noise-induced hearing loss and the relationship between tinnitus and the duration of noise exposure. Subjects and Method Thirty-three patients with subjective tinnitus and noise-induced hearing loss were included in this study. Tinnitus questionnaire, Tinnitus Handicap Inventory (THI) and audiological examinations were investigated according to the duration of noise exposure. Results There was a significant correlation between the tinnitus loudness and the duration of noise exposure. Patients who had longer periods of noise exposure had a louder tinnitus and higher THI score. However, there is no significant correlation between the characteristics of tinnitus and aging process. Conclusion The duration of noise exposure influences the loudness and distress of tinnitus. An awareness of tinnitus should be considered as part of hearing conservation program.

• Journal of Chest Surgery
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• 제31권6호
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• pp.581-585
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• 1998

술후자가수혈은 수혈부작용없이 혈액보존을 할 수 있는 방법으로 알려져있다. 불안정성 협심증에 대한 관상동맥우회술 후에 술후자가수혈을 채용하면 동종수혈을 얼마나 줄일 수 있을 지를 알아보고자 이 환자군을 대상으로 출혈경향과 동종수혈양상을 관찰하였다. 1997년 8월부터 10월까지의 기간에 시행한 관상동맥우회술 환자 중, 불안정성 협심증인 26명을 대상으로 후향적으로 조사한 결과 90%의 환자가 평균 2.4단위의 동종수혈을 받았고 85%의 환자에서 수술당일 중환자실에서 혈액이 투여되었으며 다수에서 빈혈의 교정이 아니고 혈량유지를 위하여 수혈이 이루어졌다. 출혈은 술후 5시간까지 평균 340cc였고 69%(18명)에서 200cc이상의 출혈을 보여 이 환자에게 자가수혈을 할수 있을 것으로 사료되었다. 결론적으로 여러 가지 혈액보존법의 채용에도 불구하고 90%의 환자에서 동종수혈이 이루어졌으며 그 중 다수에서 불필요한 수혈이 있었음을 알 수 있었으며 이를 해결하는 한 방법으로 수술직후 출혈이 있는 시기에 어떤 종류의 혈액이 필요하며 따라서 수술후 자가수혈을 채용하면 동종수혈을 줄이는데 기여할 수 있을 것으로 보인다.

• Asian Pacific Journal of Cancer Prevention
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• 제17권11호
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• pp.4819-4823
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• 2016

Bckground: Adjuvant radiation therapy is commonly administered following breast-conserving surgery for breast cancer patients. Hypofractionated radiotherapy can significantly reduce the waiting time for radiotherapy, working load on machines, patient visits to radiotherapy departments and medical costs. Material/Methods: Fifty-two patients with operable breast cancer (pT1-3pN0M0) who underwent breast conservation surgery in Tehran Cancer Institute during January 2011 to January 2012, were randomly assigned to undergo radiotherapy in two arms (hypofractionated radiotherapy arm with 30 patients, dose 42.5 Gy in 16 fractions; and conventional radiotherapy arm with 22 patients, dose 50 Gy in 25 fractions). W compared these two groups in terms of overall survival, locoregional control, late skin complications and cosmetic results. Results: At a median follow-up of 52.4 months (range: 0-64 months), the follow-up rate was 82.6%. Overall, after 60 months, there was no detectable significant differences between groups regarding cosmetic results (p = 0.857), locoregional control or survival. Conclusions: The results confirm that hypofractionated radiotherapy with a subsequent boost is as effective as conventional radiotherapy, is well-tolerated and can be used as an alternative treatment method following breast conservation surgery.

• Journal of Chest Surgery
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• 제26권4호
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• pp.271-275
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• 1993

In this country, the number of patients with coronary artery disease is progressively increasing with the change of life style and improvement of the diagnostic procedures. In addition, the medically invasive procedure for treating ischemic heart disease was rapidly developed and the surgical patients have more complex and multiple lesions and more surgical risks. Fifty three patients with ischemic heart disease underwent coronary bypass grafting [CABG] for recent 24 months. Twenty patients had three-vessel disease, 17 patients two-vessel disease, and 2 patients single-vessel disease. The average number of distal anastomoses was 3.3 per patient with the range of I to 6 grafts. Forty-one patients [77.4 %] had preoperative left ventricular ejection fraction of 50 % or more and 14 patients[26.4%] had a significant left main coronary lesion. Saphenous vein grafts were employed in 52/53 patients [98.1%] and internal mammary grafts, which were anastomosed to left anterior descending artery, in 38/53 patients[71.7%]. Two patients, whom percutaneous transluminal coronary angioplasty failed for, underwent emergency CABG with only saphenous vein grafts and both patients survived.The hospital mortality was 1.9 % and there was no late death. Perioperative myocardial infarction occurred in 1.9%. All survivors were asymptomatic[in 83% of the patients] and/or improved over their preoperative status. Twenty-nine patients were included in blood conservation group and 21 patients [72.4 %] underwent CABG without any homologous blood transfusion. Our early result of coronary bypass grafting was comparable to that which was reported in other coronary surgery units.

• Journal of Chest Surgery
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• 제47권4호
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• pp.350-357
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• 2014

Background: Conservation of blood during cardiac surgery is important because of the shortage of donor blood, risks associated with transfusion, and the costs of allogeneic blood products. This retrospective study explored the feasibility of off-pump coronary artery bypass (OPCAB) without transfusion. Methods: One hundred and two consecutive patients underwent OPCAB from January 2007 to June 2012 at Hallym University Sacred Heart Hospital. Excluding 10 chronic renal failures patients, 102 patients were enrolled. Their characteristics, clinical data, and laboratory data were analyzed. We investigated the success rate of OPCAB without transfusion according to preoperative hemoglobin (Hb), and the cutoff point of the Hb level and the risk factors for transfusion. We implemented multidisciplinary blood-saving protocols. Results: The overall operative mortality and the success rate of OPCAB without transfusion were 2.9% (3/102) and 73.5% (75/102). The success rates in patients with Hb<11, 11 70 years, diagnosis of acute myocardial infarction, preoperative Hb and creatinine levels, and operation time. The events precipitating the need for transfusion were low Hb level in 9 patients and hypotension or excessive bleeding in 18 patients. Conclusion: The preoperative Hb level of >11 facilitates OPCAB without transfusion. These results suggest that transfusion-free OPCAB can be performed by modifying the risk factors and correctable causes of transfusion and improving various blood salvage methods.