1.Successful coronary stent retrieval from the ascending aorta using a gooseneck snare kit.
Ji Hun JANG ; Seong Ill WOO ; Dong Hyeok YANG ; Sang Don PARK ; Dae Hyeok KIM ; Sung Hee SHIN
The Korean Journal of Internal Medicine 2013;28(4):481-485
Coronary stent dislodgement is a rare complication of percutaneous coronary intervention. We report a case of stent dislodgement in the ascending thoracic aorta. The stent was mechanically distorted in the left circumflex artery (LCX) while being delivered to the proximal LCX lesion. The balloon catheter was withdrawn, but the stent with the guide wire was remained in the ascending thoracic aorta. The stent was unable to be retrieved into the guide catheter, as it was distorted. A goose neck snare was used successfully to catch the stent in the ascending thoracic aorta and retrieved the stent externally via the arterial sheath.
Angioplasty, Balloon, Coronary/*adverse effects/*instrumentation
;
*Aorta, Thoracic/radiography
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Cardiac Catheterization/*adverse effects/*instrumentation
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Coronary Angiography
;
Device Removal/*instrumentation
;
Foreign Bodies/etiology/radiography/*therapy
;
Humans
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Male
;
Middle Aged
;
Radiography, Interventional
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*Stents
;
Treatment Outcome
2.Two dislodged and crushed coronary stents: treatment of two simultaneously dislodged stents using crushing techniques.
Dong Hyeok YANG ; Seong Ill WOO ; Dae Hyeok KIM ; Sang Don PARK ; Ji Hun JANG ; Jun KWAN ; Sung Hee SHIN
The Korean Journal of Internal Medicine 2013;28(6):718-723
Coronary stent dislodgement is a rare complication of percutaneous coronary intervention. We report a rare case of dislodgement of two intracoronary stents. On withdrawal of two balloon catheters, one with a guide wire was mechanically distorted from the left main (LM) to the proximal left anterior descending artery (LAD) while the other was dislodged from the LM to the ostial left circumflex artery. The stent in the LAD could not be retrieved into the guide catheter using a Goose neck snare, because it was caught on a previously deployed stent at the mid LAD. A new stent was quickly deployed from the LM to the proximal LAD, because the patient developed cardiogenic shock. Both stents, including a distorted and elongated stent, were crushed to the LM wall. Stent deployment and crushing may be a good alternative technique to retrieving a dislodged stent.
Angioplasty, Balloon, Coronary/adverse effects/*instrumentation
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Cardiac Catheterization/adverse effects/*instrumentation
;
Coronary Angiography
;
Coronary Stenosis/diagnosis/*therapy
;
Female
;
Humans
;
Middle Aged
;
Prosthesis Failure
;
Shock, Cardiogenic/etiology/therapy
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*Stents
;
Treatment Outcome
3.A case of a detached and entrapped stent balloon catheter debris after coronary stenting.
Sung Sik YANG ; Gae Hyuk MOON ; Dae Hyeok KIM ; Ki Hoon LEE ; Jeong Kee SEO ; Jun KWAN ; Keum Soo PARK ; Woo Hyung LEE
Korean Circulation Journal 2001;31(6):584-587
No abstract available.
Catheters*
;
Stents*
4.The Effects of Midazolam and Droperidol Pretreatment on the Cardiac Toxicity of Bupivacaine in Rabbits.
Yong Shin KIM ; Yoo Jin KANG ; Dae Woo KIM ; Jang Hyeok IN ; So Young YANG ; Yong Gul LIM
Korean Journal of Anesthesiology 2000;38(3):503-508
BACKGROUND: Unintended intravenous injection of bupivacaine causes severe cardiovascular complication, which is known for its difficulty in resuscitation. This study was performed to evaluate the effects of pretreatment with midazolam and droperidol in the cardiac toxicity caused by intravenous infusion of bupivacaine. METHODS: Thirty rabbits were divided into three groups; saline- as a control, midazolam, and droperidol pretreated group. We observed the time intervals for the arrhythmia, 25% and 50% reduction in baseline mean arterial blood pressure, and arrest. We also checked the dose of infused bupivacaine to be required for arrest during continuous intravenous infusion of bupivacaine at the rate of 1 mg/kg/min. RESULTS: The onset of dysrhythmia and the time to 50% reduction in baseline mean arterial blood pressure and arrest were significantly more delayed in the midazolam group than the control group (P < 0.05). With respect to the time to 25%, 50% reduction in baseline mean arterial blood pressure and arrest, the data of the droperidol group was significantly shorter than that of the control group (P < 0.05). CONCLUSIONS: Droperidol pretreatment hastened bupivacaine induced cardiac arrest in rabbits. Midazolam pretreatment exerted protective effects on arrhythmia and cardiac arrest. Thus midazolam would be a preferable agent as a supplement for regional anesthesia using bupivacaine.
Anesthesia, Conduction
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Arrhythmias, Cardiac
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Arterial Pressure
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Bupivacaine*
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Droperidol*
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Heart Arrest
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Heart Arrest, Induced
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Infusions, Intravenous
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Injections, Intravenous
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Midazolam*
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Rabbits*
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Resuscitation
5.Early dipyridamole stress myocardial SPECT to detect residual stenosis of infarct related artery: comparison with coronary angiography and fractional flow reserve.
Jeong Kee SEO ; Jun KWAN ; Dae Hyeok KIM ; Sung Sik YANG ; Ki Hoon LEE ; In Young HYUN ; Wonsick CHOE ; Hyo Jung LEE ; Keum Soo PARK ; Woo Hyung LEE
Korean Journal of Medicine 2001;60(2):106-114
BACKGROUND: The detection of residual stenosis of infarct related artery (IRA) at early stage after acute myocardial infarction (AMI) is crucial in clinical decision making for interventional revascularization. The aim of this study was to evaluate the relevancy of early dipyridamole stress myocardial SPECT to detect functionally and luminologically significant residual stenosis of IRA after AMI. METHODS: Twenty five consecutive patients (M:F=19:6, age: 56+/-13yrs) with AMI were underwent SPECT and coronary angiography within 5 days of the attack. Infarct related arteries with FFR
Arteries*
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Constriction, Pathologic*
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Coronary Angiography*
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Decision Making
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Dipyridamole*
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Humans
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Myocardial Infarction
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Perfusion
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Sensitivity and Specificity
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Tomography, Emission-Computed, Single-Photon*
6.Transient J-Wave Appearance in the Inferior-Lateral Leads during Electrical Storm in a Patient with Brugada Syndrome.
Dong Hyuk YANG ; Hyuk Jeong KWON ; Jin Chul KIM ; Ji Hun JANG ; Sung Hee SHIN ; Jun KWAN ; Sung Il WOO ; Keum Soo PARK ; Dae Hyeok KIM
Korean Circulation Journal 2013;43(3):193-195
A 67-year-old male patient was admitted with an abrupt sudden cardiac death. He represented with an extreme electrical storm of 30 times of ventricular fibrillation (VF) episodes on one day. External shocks were performed to terminate VF. Transient J-wave in the inferior-lateral leads and Brugada electrocardiography pattern on the right precordial leads appeared during the electrical storm. And J-wave disappeared after the termination of electrical storm. We report a case of the appearance of J-wave during electrical storm in a patient with Brugada syndrome.
Brugada Syndrome
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Death, Sudden, Cardiac
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Electrocardiography
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Humans
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Male
;
Shock
;
Ventricular Fibrillation
7.Spontaneous coronary artery dissection by intravascular ultrasound in a patient with myocardial infarction.
Ji Hun JANG ; Dae Hyeok KIM ; Dong Hyuk YANG ; Seong Il WOO ; Jun KWAN ; Keum Soo PARK ; Sung Hee SHIN
The Korean Journal of Internal Medicine 2014;29(1):106-110
Spontaneous coronary artery dissection is a rare cause of acute coronary syndrome and sudden cardiac death. The incidence, causes, pathogenesis, and treatment have not been defined clearly, but spontaneous coronary artery dissection should be considered in young patients without major cardiovascular risk factors or in patients in the peripartum period who present with acute coronary syndrome. The treatment is often challenging. Medical treatment is usually considered, and percutaneous coronary intervention or coronary artery bypass surgery may be possible in some patients. We herein report two cases of middle-aged males with myocardial infarction who were treated with percutaneous coronary angioplasty.
Adult
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Coronary Artery Disease/*complications/surgery/ultrasonography
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Humans
;
Male
;
Middle Aged
;
Myocardial Infarction/*etiology/surgery/ultrasonography
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*Percutaneous Coronary Intervention
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Rupture, Spontaneous/surgery/ultrasonography
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Ultrasonography, Interventional
8.Three-Dimensional Cell Culture System for Tendon Tissue Engineering
Young Hoon SON ; Dae Hyeok YANG ; Biaggio URICOLI ; Sung-Jin PARK ; Gun-Jae JEONG ; Heung Jae CHUN
Tissue Engineering and Regenerative Medicine 2023;20(4):553-562
Tendon, connective tissue between bone and muscle has unique component of the musculoskeletal system. It plays important role for transporting mechanical stress from muscle to bone and enabling locomotive motion of the body. There are some restoration capacities in the tendon tissue, but the injured tendons are not completely regenerated after acute and chronic tendon injury. At this point, the treatment options for tendon injuries are limited and not that successful. Therefore, biomedical engineering approaches are emerged to cope with this issue. Among them, three-dimensional cell culture platforms provided similarity to in vivo conditions and suggested opportunities for new therapeutic approaches for treatment of tendon injuries. In this review, we focus on the characteristics of tendon tissue and tendon pathologies which can be targets for tendon tissue engineering strategies. Then proof-of-concept and pre-clinical studies leveraging advanced 3-dimensional cell culture platforms for tendon tissue regeneration have been discussed.
10.A Case of Retroperitoneal Schwannoma of the Vagus Nerve.
Byoung Kwan YOO ; Kyo Sang YOO ; Chul Sung PARK ; Jung Wha LEE ; Ji Youn YOO ; Joon Ho MOON ; Jae One JUNG ; Jong Pyo KIM ; Kyoung Oh KIM ; Cheol Hee PARK ; Tae Ho HAHN ; Sang Hoon PARK ; Jong Hyeok KIM ; Soo Kee MIN ; Dae Hyun YANG ; Choong Kee PARK
The Korean Journal of Gastroenterology 2005;46(4):302-305
Schwannomas are benign nerve sheath tumors that originate from any anatomical site. Most schwannomas occur in the head, neck or limbs, but rarely occur in the retroperitoneal space. Furthermore, the schwannoma originating from the vagus nerve of retroperitoneal space is much rare. We experienced a case of retroperitoneal schwannoma of the vagus nerve. A 34-year-old male was refered to our hospital for the evaluation of abdominal mass on ultrasonography. Endoscopic examination revealed submucosal tumor-like lesion on high body of the stomach. Computed tomography (CT) revealed that the stomach was compressed by a solid tumor in the retroperitoneum. On exploratory laparotomy, this mass turned out to be a baseball sized mass in the retroperitoneal space. The mass was excised in an encapsulated state. Histological examination with immunohistochemical stains revealed a schwannoma of the vagus nerve.
Adult
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Cranial Nerve Neoplasms/*diagnosis
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English Abstract
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Humans
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Male
;
Neurilemmoma/*diagnosis
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Retroperitoneal Space
;
*Vagus Nerve
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Vagus Nerve Diseases/*diagnosis