1.Outcomes of Deferring Percutaneous Coronary Intervention Without Physiologic Assessment for Intermediate Coronary Lesions
Jihoon KIM ; Seong-Hoon LIM ; Joo-Yong HAHN ; Jin-Ok JEONG ; Yong Hwan PARK ; Woo Jung CHUN ; Ju Hyeon OH ; Dae Kyoung CHO ; Yu Jeong CHOI ; Eul-Soon IM ; Kyung-Heon WON ; Sung Yun LEE ; Sang-Wook KIM ; Ki Hong CHOI ; Joo Myung LEE ; Taek Kyu PARK ; Jeong Hoon YANG ; Young Bin SONG ; Seung-Hyuk CHOI ; Hyeon-Cheol GWON
Korean Circulation Journal 2025;55(3):185-195
		                        		
		                        			 Background and Objectives:
		                        			Outcomes of deferring percutaneous coronary intervention (PCI) without invasive physiologic assessment for intermediate coronary lesions is uncertain.We sought to compare long-term outcomes between medical treatment and PCI of intermediate lesions without invasive physiologic assessment. 
		                        		
		                        			Methods:
		                        			A total of 899 patients with intermediate coronary lesions between 50% and 70% diameter-stenosis were randomized to the conservative group (n=449) or the aggressive group (n=450). For intermediate lesions, PCI was performed in the aggressive group, but was deferred in the conservative group. The primary endpoint was major adverse cardiac events (MACE, a composite of all-cause death, myocardial infarction [MI], or ischemia-driven any revascularization) at 3 years. 
		                        		
		                        			Results:
		                        			The number of treated lesions per patient was 0.8±0.9 in the conservative group and 1.7±0.9 in the aggressive group (p=0.001). At 3 years, the conservative group had a significantly higher incidence of MACE than the aggressive group (13.8% vs. 9.3%; hazard ratio [HR], 1.49; 95% confidence interval [CI], 1.00–2.21; p=0.049), mainly driven by revascularization of target intermediate lesion (6.5% vs. 1.1%; HR, 5.69; 95% CI, 2.20–14.73;p<0.001). Between 1 and 3 years after the index procedure, compared to the aggressive group, the conservative group had significantly higher incidence of cardiac death or MI (3.2% vs.0.7%; HR, 4.34; 95% CI, 1.24–15.22; p=0.022) and ischemia-driven any revascularization. 
		                        		
		                        			Conclusions
		                        			For intermediate lesions, medical therapy alone, guided only by angiography, was associated with a higher risk of MACE at 3 years compared with performing PCI, mainly due to increased revascularization. 
		                        		
		                        		
		                        		
		                        	
2.Outcomes of Deferring Percutaneous Coronary Intervention Without Physiologic Assessment for Intermediate Coronary Lesions
Jihoon KIM ; Seong-Hoon LIM ; Joo-Yong HAHN ; Jin-Ok JEONG ; Yong Hwan PARK ; Woo Jung CHUN ; Ju Hyeon OH ; Dae Kyoung CHO ; Yu Jeong CHOI ; Eul-Soon IM ; Kyung-Heon WON ; Sung Yun LEE ; Sang-Wook KIM ; Ki Hong CHOI ; Joo Myung LEE ; Taek Kyu PARK ; Jeong Hoon YANG ; Young Bin SONG ; Seung-Hyuk CHOI ; Hyeon-Cheol GWON
Korean Circulation Journal 2025;55(3):185-195
		                        		
		                        			 Background and Objectives:
		                        			Outcomes of deferring percutaneous coronary intervention (PCI) without invasive physiologic assessment for intermediate coronary lesions is uncertain.We sought to compare long-term outcomes between medical treatment and PCI of intermediate lesions without invasive physiologic assessment. 
		                        		
		                        			Methods:
		                        			A total of 899 patients with intermediate coronary lesions between 50% and 70% diameter-stenosis were randomized to the conservative group (n=449) or the aggressive group (n=450). For intermediate lesions, PCI was performed in the aggressive group, but was deferred in the conservative group. The primary endpoint was major adverse cardiac events (MACE, a composite of all-cause death, myocardial infarction [MI], or ischemia-driven any revascularization) at 3 years. 
		                        		
		                        			Results:
		                        			The number of treated lesions per patient was 0.8±0.9 in the conservative group and 1.7±0.9 in the aggressive group (p=0.001). At 3 years, the conservative group had a significantly higher incidence of MACE than the aggressive group (13.8% vs. 9.3%; hazard ratio [HR], 1.49; 95% confidence interval [CI], 1.00–2.21; p=0.049), mainly driven by revascularization of target intermediate lesion (6.5% vs. 1.1%; HR, 5.69; 95% CI, 2.20–14.73;p<0.001). Between 1 and 3 years after the index procedure, compared to the aggressive group, the conservative group had significantly higher incidence of cardiac death or MI (3.2% vs.0.7%; HR, 4.34; 95% CI, 1.24–15.22; p=0.022) and ischemia-driven any revascularization. 
		                        		
		                        			Conclusions
		                        			For intermediate lesions, medical therapy alone, guided only by angiography, was associated with a higher risk of MACE at 3 years compared with performing PCI, mainly due to increased revascularization. 
		                        		
		                        		
		                        		
		                        	
3.Outcomes of Deferring Percutaneous Coronary Intervention Without Physiologic Assessment for Intermediate Coronary Lesions
Jihoon KIM ; Seong-Hoon LIM ; Joo-Yong HAHN ; Jin-Ok JEONG ; Yong Hwan PARK ; Woo Jung CHUN ; Ju Hyeon OH ; Dae Kyoung CHO ; Yu Jeong CHOI ; Eul-Soon IM ; Kyung-Heon WON ; Sung Yun LEE ; Sang-Wook KIM ; Ki Hong CHOI ; Joo Myung LEE ; Taek Kyu PARK ; Jeong Hoon YANG ; Young Bin SONG ; Seung-Hyuk CHOI ; Hyeon-Cheol GWON
Korean Circulation Journal 2025;55(3):185-195
		                        		
		                        			 Background and Objectives:
		                        			Outcomes of deferring percutaneous coronary intervention (PCI) without invasive physiologic assessment for intermediate coronary lesions is uncertain.We sought to compare long-term outcomes between medical treatment and PCI of intermediate lesions without invasive physiologic assessment. 
		                        		
		                        			Methods:
		                        			A total of 899 patients with intermediate coronary lesions between 50% and 70% diameter-stenosis were randomized to the conservative group (n=449) or the aggressive group (n=450). For intermediate lesions, PCI was performed in the aggressive group, but was deferred in the conservative group. The primary endpoint was major adverse cardiac events (MACE, a composite of all-cause death, myocardial infarction [MI], or ischemia-driven any revascularization) at 3 years. 
		                        		
		                        			Results:
		                        			The number of treated lesions per patient was 0.8±0.9 in the conservative group and 1.7±0.9 in the aggressive group (p=0.001). At 3 years, the conservative group had a significantly higher incidence of MACE than the aggressive group (13.8% vs. 9.3%; hazard ratio [HR], 1.49; 95% confidence interval [CI], 1.00–2.21; p=0.049), mainly driven by revascularization of target intermediate lesion (6.5% vs. 1.1%; HR, 5.69; 95% CI, 2.20–14.73;p<0.001). Between 1 and 3 years after the index procedure, compared to the aggressive group, the conservative group had significantly higher incidence of cardiac death or MI (3.2% vs.0.7%; HR, 4.34; 95% CI, 1.24–15.22; p=0.022) and ischemia-driven any revascularization. 
		                        		
		                        			Conclusions
		                        			For intermediate lesions, medical therapy alone, guided only by angiography, was associated with a higher risk of MACE at 3 years compared with performing PCI, mainly due to increased revascularization. 
		                        		
		                        		
		                        		
		                        	
4.Outcomes of Deferring Percutaneous Coronary Intervention Without Physiologic Assessment for Intermediate Coronary Lesions
Jihoon KIM ; Seong-Hoon LIM ; Joo-Yong HAHN ; Jin-Ok JEONG ; Yong Hwan PARK ; Woo Jung CHUN ; Ju Hyeon OH ; Dae Kyoung CHO ; Yu Jeong CHOI ; Eul-Soon IM ; Kyung-Heon WON ; Sung Yun LEE ; Sang-Wook KIM ; Ki Hong CHOI ; Joo Myung LEE ; Taek Kyu PARK ; Jeong Hoon YANG ; Young Bin SONG ; Seung-Hyuk CHOI ; Hyeon-Cheol GWON
Korean Circulation Journal 2025;55(3):185-195
		                        		
		                        			 Background and Objectives:
		                        			Outcomes of deferring percutaneous coronary intervention (PCI) without invasive physiologic assessment for intermediate coronary lesions is uncertain.We sought to compare long-term outcomes between medical treatment and PCI of intermediate lesions without invasive physiologic assessment. 
		                        		
		                        			Methods:
		                        			A total of 899 patients with intermediate coronary lesions between 50% and 70% diameter-stenosis were randomized to the conservative group (n=449) or the aggressive group (n=450). For intermediate lesions, PCI was performed in the aggressive group, but was deferred in the conservative group. The primary endpoint was major adverse cardiac events (MACE, a composite of all-cause death, myocardial infarction [MI], or ischemia-driven any revascularization) at 3 years. 
		                        		
		                        			Results:
		                        			The number of treated lesions per patient was 0.8±0.9 in the conservative group and 1.7±0.9 in the aggressive group (p=0.001). At 3 years, the conservative group had a significantly higher incidence of MACE than the aggressive group (13.8% vs. 9.3%; hazard ratio [HR], 1.49; 95% confidence interval [CI], 1.00–2.21; p=0.049), mainly driven by revascularization of target intermediate lesion (6.5% vs. 1.1%; HR, 5.69; 95% CI, 2.20–14.73;p<0.001). Between 1 and 3 years after the index procedure, compared to the aggressive group, the conservative group had significantly higher incidence of cardiac death or MI (3.2% vs.0.7%; HR, 4.34; 95% CI, 1.24–15.22; p=0.022) and ischemia-driven any revascularization. 
		                        		
		                        			Conclusions
		                        			For intermediate lesions, medical therapy alone, guided only by angiography, was associated with a higher risk of MACE at 3 years compared with performing PCI, mainly due to increased revascularization. 
		                        		
		                        		
		                        		
		                        	
5.Safety and Efficacy of Biodegradable Polymer-biolimus-eluting Stents (BP-BES) Compared with Durable Polymer-everolimus-eluting Stents (DP-EES) in Patients Undergoing Complex Percutaneous Coronary Intervention
Pil Sang SONG ; Kyu Tae PARK ; Min Jeong KIM ; Ki Hyun JEON ; Jin Sik PARK ; Rak Kyeong CHOI ; Young Bin SONG ; Seung Hyuk CHOI ; Jin Ho CHOI ; Sang Hoon LEE ; Hyeon Cheol GWON ; Jin Ok JEONG ; Eul Soon IM ; Sang Wook KIM ; Woo Jung CHUN ; Ju Hyeon OH ; Joo Yong HAHN
Korean Circulation Journal 2019;49(1):69-80
		                        		
		                        			 BACKGROUND AND OBJECTIVES:
		                        			There are no data comparing clinical outcomes of complex percutaneous coronary intervention (PCI) between biodegradable polymer-biolimus-eluting stents (BP-BES) and durable polymer-everolimus-eluting stents (DP-EES). We sought to evaluate the safety and efficacy of BP-BES compared with DP-EES in patients undergoing complex PCI.
		                        		
		                        			METHODS:
		                        			Patients enrolled in the SMART-DESK registry were stratified into 2 categories based on the complexity of PCI. Complex PCI was defined as having at least one of the following features: unprotected left main lesion, ≥2 lesions treated, total stent length >40 mm, minimal stent diameter ≤2.5 mm, or bifurcation as target lesion. The primary outcome was target lesion failure (TLF), defined as a composite of cardiac death, target vessel-related myocardial infarction (TV-MI), or target lesion revascularization (TLR) at 2 years of follow-up.
		                        		
		                        			RESULTS:
		                        			Of 1,999 patients, 1,145 (57.3%) underwent complex PCI: 521 patients were treated with BP-BES and 624 with DP-EES. In propensity-score matching analysis (481 pairs), the risks of TLF (3.8% vs. 5.2%, adjusted hazard ratio [HR], 0.578; 95% confidence interval [CI], 0.246–1.359; p=0.209), cardiac death (2.5% vs. 2.5%, adjusted HR, 0.787; 95% CI, 0.244–2.539; p=0.689), TV-MI (0.5% vs. 0.4%, adjusted HR, 1.128; 95% CI, 0.157–8.093; p=0.905), and TLR (1.1% vs. 2.9%, adjusted HR, 0.390; 95% CI, 0.139–1.095; p=0.074) did not differ between 2 stent groups after complex PCI.
		                        		
		                        			CONCLUSIONS
		                        			Clinical outcomes of BP-BES were comparable to those of DP-EES at 2 years after complex PCI. Our data suggest that use of BP-BES is acceptable, even for complex PCI. 
		                        		
		                        		
		                        		
		                        	
6.Safety and Efficacy of Biodegradable Polymer-biolimus-eluting Stents (BP-BES) Compared with Durable Polymer-everolimus-eluting Stents (DP-EES) in Patients Undergoing Complex Percutaneous Coronary Intervention
Pil Sang SONG ; Kyu Tae PARK ; Min Jeong KIM ; Ki Hyun JEON ; Jin Sik PARK ; Rak Kyeong CHOI ; Young Bin SONG ; Seung Hyuk CHOI ; Jin Ho CHOI ; Sang Hoon LEE ; Hyeon Cheol GWON ; Jin Ok JEONG ; Eul Soon IM ; Sang Wook KIM ; Woo Jung CHUN ; Ju Hyeon OH ; Joo Yong HAHN
Korean Circulation Journal 2019;49(1):69-80
		                        		
		                        			
		                        			BACKGROUND AND OBJECTIVES: There are no data comparing clinical outcomes of complex percutaneous coronary intervention (PCI) between biodegradable polymer-biolimus-eluting stents (BP-BES) and durable polymer-everolimus-eluting stents (DP-EES). We sought to evaluate the safety and efficacy of BP-BES compared with DP-EES in patients undergoing complex PCI. METHODS: Patients enrolled in the SMART-DESK registry were stratified into 2 categories based on the complexity of PCI. Complex PCI was defined as having at least one of the following features: unprotected left main lesion, ≥2 lesions treated, total stent length >40 mm, minimal stent diameter ≤2.5 mm, or bifurcation as target lesion. The primary outcome was target lesion failure (TLF), defined as a composite of cardiac death, target vessel-related myocardial infarction (TV-MI), or target lesion revascularization (TLR) at 2 years of follow-up. RESULTS: Of 1,999 patients, 1,145 (57.3%) underwent complex PCI: 521 patients were treated with BP-BES and 624 with DP-EES. In propensity-score matching analysis (481 pairs), the risks of TLF (3.8% vs. 5.2%, adjusted hazard ratio [HR], 0.578; 95% confidence interval [CI], 0.246–1.359; p=0.209), cardiac death (2.5% vs. 2.5%, adjusted HR, 0.787; 95% CI, 0.244–2.539; p=0.689), TV-MI (0.5% vs. 0.4%, adjusted HR, 1.128; 95% CI, 0.157–8.093; p=0.905), and TLR (1.1% vs. 2.9%, adjusted HR, 0.390; 95% CI, 0.139–1.095; p=0.074) did not differ between 2 stent groups after complex PCI. CONCLUSIONS: Clinical outcomes of BP-BES were comparable to those of DP-EES at 2 years after complex PCI. Our data suggest that use of BP-BES is acceptable, even for complex PCI.
		                        		
		                        		
		                        		
		                        			Coronary Artery Disease
		                        			;
		                        		
		                        			Death
		                        			;
		                        		
		                        			Drug-Eluting Stents
		                        			;
		                        		
		                        			Follow-Up Studies
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Myocardial Infarction
		                        			;
		                        		
		                        			Percutaneous Coronary Intervention
		                        			;
		                        		
		                        			Stents
		                        			
		                        		
		                        	
7.t(9;22) with 5'ABL1 Deletion and t(6;19) in Biphenotypic Acute Leukemia.
Jung Eun KIM ; Yiel Hea SEO ; Pil Hwan PARK ; Kyung Hee KIM ; Young Hee SONG ; Soon Ho PARK ; Eul Ju SEO ; Jeong Yeal AHN
Korean Journal of Hematology 2009;44(4):249-254
		                        		
		                        			
		                        			Biphenotypic acute leukemia (BAL) is a rare type of leukemia, comprises 4% of all acute leukemias. It is more common in adults and the clinical features, as related to marrow dysfunction, are similar to those found in other patients with acute leukemia. BAL commonly shows a dimorphic blast population with, one resembling lymphoblasts and the other resembling myeloblasts. The majority of BAL patients express B-lymphoid and myeloid markers. BAL can be diagnosed by morphologic studies and by a comprehensive panel of immunological markers, as well as cytogenetic/molecular studies, such as fluorescence in situ hybridization (FISH) and reverse transcriptase-polymerase chain reaction (RT-PCR). In addition, its prognosis is relatively poor. We present here a 27 year-old female patient who showed lymphoblasts and myeloblasts on her marrow studies and these cells were positive for myeloid and B-lymphoid markers on the immunophenotypic studies. Chromosome analysis revealed 46,XX,t(6;19)(p23;p13.1),t(9;22)(q34;q11.2). A major (b3a2) type of BCR-ABL1 mRNA transcript was detected by RT-PCR, and a 5'ABL1 deletion was identified by FISH.
		                        		
		                        		
		                        		
		                        			Adult
		                        			;
		                        		
		                        			Bone Marrow
		                        			;
		                        		
		                        			Female
		                        			;
		                        		
		                        			Fluorescence
		                        			;
		                        		
		                        			Granulocyte Precursor Cells
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			In Situ Hybridization
		                        			;
		                        		
		                        			Leukemia
		                        			;
		                        		
		                        			Leukemia, Biphenotypic, Acute
		                        			;
		                        		
		                        			Prognosis
		                        			;
		                        		
		                        			RNA, Messenger
		                        			
		                        		
		                        	
8.Trend (in 2005) of Repair of Inguinal Hernia in Children in Korea : A National Survey by the Korean Association of Pediatric Surgeons in 2005.
Seong Min KIM ; Dae Yeon KIM ; Sang Yoon KIM ; Seong Chul KIM ; Woo Ki KIM ; Jae Eok KIM ; Jae Chun KIM ; Kwi Won PARK ; Jeong Meen SEO ; Young Tack SONG ; Jung Tak OH ; Nam Hyuk LEE ; Doo Sun LEE ; Yong Soon CHUN ; Sang Young CHUNG ; Eul Sam CHUNG ; Kum Ja CHOI ; Soon Ok CHOI ; Seok Joo HAN ; Young Soo HUH ; Jeong HONG ; Seung Hoon CHOI
Journal of the Korean Association of Pediatric Surgeons 2006;12(2):155-166
		                        		
		                        			
		                        			Inguinal hernia is the most common disease treated by the pediatric surgeon. There are several controversial aspects of management 1)the optimal timing of surgical repair, especially for preterm babies, 2)contralateral groin exploration during repair of a clinically unilateral hernia, 3)use of laparoscope in contralateral groin exploration, 4)timing of surgical repair of cord hydrocele, 5)perioperative pain control, 6)perioperative management of anemia. In this survey, we attempted to determine the approach of members of KAPS to these aspects of hernia treatment. A questionnaire by e-mail or FAX was sent to all members. The content of the questionnaire were adapted from the "American Academy of Pediatrics (AAP) Section on Surgery hernia survey revisited (J Pediatr Surg 40, 1009-1014, 2005)". For full-term male baby, most surgeons (85.7 %) perform an elective operation as soon as diagnosis was made. For reducible hernia found in ex-preterm infants already discharged from the neonatal intensive care unit (NICU), 76.2 % of surgeons performed an elective repair under general anesthesia (85.8 %). 42.9 % of the surgeons performed the repair just before discharge. For same-day surgery for the ex-premature baby, the opinion was evenly divided. For an inguinal hernia with a contralateral undescended testis in a preterm baby, 61.9 % of surgeons choose to 'wait and see' until 12 month of age. The most important consideration in deciding the timing of surgery of inguinal hernia in preterm baby was the existence of bronchopulmonary dysplasia (82.4 %), episode of apnea/bradycardia on home monitoring (70.6 %). Most surgeons do not explore the contralateral groin during unilateral hernia repair. Laparoscope has not been tried. Most surgeons do not give perioperative analgesics or blood transfusion.
		                        		
		                        		
		                        		
		                        			Analgesics
		                        			;
		                        		
		                        			Anemia
		                        			;
		                        		
		                        			Anesthesia, General
		                        			;
		                        		
		                        			Blood Transfusion
		                        			;
		                        		
		                        			Bronchopulmonary Dysplasia
		                        			;
		                        		
		                        			Child*
		                        			;
		                        		
		                        			Cryptorchidism
		                        			;
		                        		
		                        			Diagnosis
		                        			;
		                        		
		                        			Electronic Mail
		                        			;
		                        		
		                        			Groin
		                        			;
		                        		
		                        			Hernia
		                        			;
		                        		
		                        			Hernia, Inguinal*
		                        			;
		                        		
		                        			Herniorrhaphy
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Infant
		                        			;
		                        		
		                        			Infant, Newborn
		                        			;
		                        		
		                        			Intensive Care, Neonatal
		                        			;
		                        		
		                        			Korea*
		                        			;
		                        		
		                        			Laparoscopes
		                        			;
		                        		
		                        			Male
		                        			;
		                        		
		                        			Pediatrics
		                        			;
		                        		
		                        			Surveys and Questionnaires
		                        			
		                        		
		                        	
9.Metastsectomy a Feasible Treatment in Selected Patients with Gynecologic Malignancy.
Eul Ju MOON ; Yeonrk Jin PARK ; Hee Hwahn CHUNG ; Ju Won ROH ; Jung Suk SIM ; Sang Jae PARK ; Jong Lim PARK ; Jong Mog LEE ; Jae Ill ZO ; Dae Soon CHO ; Sang Hoon SHIN ; Heon YOO ; Seung Hoon LEE ; Sang Yoon PA
Korean Journal of Obstetrics and Gynecology 2003;46(5):1029-1036
		                        		
		                        			
		                        			To report cases of metastasectomy for metastatic gynecologic malignancies, we reviewed the medical records of all patients who have undergone metastasectomy for metastatic gynecologic malignancies in Center for Uterine Cancer from June 2001 to October 2002. Six patients were identified with median age of 55 years (range 52-66 years). The metastatic sites and primary sites were as follows: 3 liver metastasis from ovary; 1 abdominal wall metastasis from uterus (endometrial cancer), 1 brain metastasis from ovary, 1 lung metastasis from uterus (sarcoma). The median disease free interval was 48 months (range 10 months-13 years). There was no perioperative mortality. Postoperative morbidity was tolerable with 1 case of bile leakage. In three patients with hepatectomy, one patient was dead of disease after 15 months, one patient is alive with disease at 20 months of follow up, one patient have no evidence of recurrence at 7 months follow up. The patient with brain metastasis was dead due to lung metastsis after 9 months later postoperatively. Remaining two patients with abdominal wall and lung metastasis have no evidence of tumor recurrence at 4, 7 months follow up respectively. Metastasectomy for metastatic gynecologic malignancies can be performed safely and may help prolong survival in carefully selected patients.
		                        		
		                        		
		                        		
		                        			Abdominal Wall
		                        			;
		                        		
		                        			Bile
		                        			;
		                        		
		                        			Brain
		                        			;
		                        		
		                        			Female
		                        			;
		                        		
		                        			Follow-Up Studies
		                        			;
		                        		
		                        			Hepatectomy
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Liver
		                        			;
		                        		
		                        			Lung
		                        			;
		                        		
		                        			Medical Records
		                        			;
		                        		
		                        			Metastasectomy
		                        			;
		                        		
		                        			Mortality
		                        			;
		                        		
		                        			Neoplasm Metastasis
		                        			;
		                        		
		                        			Ovary
		                        			;
		                        		
		                        			Recurrence
		                        			;
		                        		
		                        			Uterine Neoplasms
		                        			;
		                        		
		                        			Uterus
		                        			
		                        		
		                        	
10.Clinical Manifestation of Novel Stress-induced Cardiomyopathy Mimicking Acute Myocardial Infarction: Single Center Prospective Registry.
Ho Hyun LEE ; Hyeon Cheol GWON ; Byung Jin KIM ; Kyung Jin LEE ; Eul Soon IM ; Kyung Hun WON ; Ji Dong SUNG ; Sang Chul LEE ; Seung Woo PARK ; Duk Kyung KIM ; Sang Hoon LEE ; Jung Don SEO
Korean Circulation Journal 2002;32(12):1054-1063
		                        		
		                        			
		                        			BACKGROUND AND OBJECTIVES: The so-called 'stress-induced cardiomyopathy' or takotsubo cardiomyopathy, mimicking acute myocardial infarction (AMI), has recently been reported, particularly in Japan. We prospectively studied the clinical characteristics of, for the first time with a Korean series, this novel syndrome. SUBJECTS AND METHODS: Eighteen patients, fore filling the inclusion criteria, were entered onto the study. The criteria for inclusion were: 1) no previous history of cardiac disease, 2) acute onset, 3) a regional wall motion abnormality in the left ventriculogram, typically in the apical segment, and 4) no significant stenosis in the coronary angiogram. RESULTS: The events preceding the condition included: emotional stress (N=7), acute illness (N=5), non-cardiac surgery or medical procedure (N=4) and accident (N=2). Chest pain, dyspnea, or nausea/vomiting were initially noted in 12 cases (66%). Pulmonary edema was demonstrated in 10 (56%), and cardiogenic shock in 4 (23%) of the patients. The peak creatinine kinase MB fraction was 69+/-136 IU/L. A T wave inversion was noted in all patients, whereas, a Q wave was noted transiently in only 1. The average left ventricular ejection fraction (LVEF) was 38+/-8% on the initial echocardiograms. On the left ventriculograms, 15 patients showed akinetic wall motion, or aneurysmal dilatation in the apical wall, however, notably in 3 patients in the mid-ventricular wall. The coronary vasospasm provocation tests were negative in all 10 patients tested. An intravascular ultrasonography showed no infarct-related plaques in the 4 patients examined. On a follow-up echocardiogram, the average LVEF was improved to 51+/-8%, and regional wall motion was normalized after 30+/-29 days following onset. CONCLUSION: We report, for the first time in a series of Korean patients, on a novel stress-induced cardiomyopathy with transient regional wall motion abnormality, mimicking AMI. The precise etiology remains to be elucidated in further studies.
		                        		
		                        		
		                        		
		                        			Aneurysm
		                        			;
		                        		
		                        			Cardiomyopathies*
		                        			;
		                        		
		                        			Cardiomyopathy, Dilated
		                        			;
		                        		
		                        			Chest Pain
		                        			;
		                        		
		                        			Constriction, Pathologic
		                        			;
		                        		
		                        			Coronary Vasospasm
		                        			;
		                        		
		                        			Creatinine
		                        			;
		                        		
		                        			Dilatation
		                        			;
		                        		
		                        			Dyspnea
		                        			;
		                        		
		                        			Follow-Up Studies
		                        			;
		                        		
		                        			Heart Diseases
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Japan
		                        			;
		                        		
		                        			Myocardial Infarction*
		                        			;
		                        		
		                        			Myocardial Stunning
		                        			;
		                        		
		                        			Phosphotransferases
		                        			;
		                        		
		                        			Prospective Studies*
		                        			;
		                        		
		                        			Pulmonary Edema
		                        			;
		                        		
		                        			Shock, Cardiogenic
		                        			;
		                        		
		                        			Stress, Psychological
		                        			;
		                        		
		                        			Stroke Volume
		                        			;
		                        		
		                        			Takotsubo Cardiomyopathy
		                        			;
		                        		
		                        			Ultrasonography, Interventional
		                        			
		                        		
		                        	
            
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