Syncope and pneumomediastinum during the maxillary sinus elevation with an air-syringe: a case report

Pneumomediastinum is a very rare and potentially catastrophic complication of dental procedures. Its common causes are tooth extraction, endodontic treatment, and subgingival curettage using handpieces and high-pressure air/water syringes. We present a case of massive pneumomediastinum with subcutaneous emphysema in a 61-year-old female who underwent bone grafting into the maxilla for pretreatment of dental implantation using a syringe. The patient suffered from abrupt severe odynophagia and loss of consciousness. The patient transferred to emergency department and images work-up revealed a pneumomediastinum and subcutaneous emphysema on the entire face and neck. We performed conservative treatments including prophylactic antibiotics, oxygen inhalation, and fasting meals, and then discharge after 7 days uneventfully. The patient’s syncope might be resulting from hypotension and pain shock induced by pneumomediastinum with a sudden chest compression. The pneumomediastinum could be resulting from concurrent perforation and massive air infiltration into the maxillary sinus during bone grafting. We suggest that pneumomediastinum needs prompt diagnosis and management because of the risk of airway obstruction when a patient present syncope in the dental room.

Median Sternotomy for the Management of Life-Threatening Bleeding Resulting from Proximal Upper Extremity Amputation

It is extremely difficult to achieve hemostasis in the case of proximal amputation of major limbs, and especially in the case of a proximal upper arm amputation, which is adjacent to the axilla. A 30-year-old male sustained a traumatic proximal left upper extremity amputation resulting in hypovolemic shock. A median sternotomy was performed to clamp the left subclavian artery. The completely transected brachial artery was reconstructed with an artificial vascular graft and the transected nerves were repaired. With simultaneous rehabilitation, the patient recovered from the hypovolemic shock and ischemic injury of the arm. Performing a median sternotomy for proximal clamping of the transected artery allowed control of the bleeding which could not be controlled by a pressure cuff. This procedure may be considered a safe and effective surgical option for patients with traumatic proximal upper extremity amputation.

Median Sternotomy for the Management of Life-Threatening Bleeding Resulting from Proximal Upper Extremity Amputation

It is extremely difficult to achieve hemostasis in the case of proximal amputation of major limbs, and especially in the case of a proximal upper arm amputation, which is adjacent to the axilla. A 30-year-old male sustained a traumatic proximal left upper extremity amputation resulting in hypovolemic shock. A median sternotomy was performed to clamp the left subclavian artery. The completely transected brachial artery was reconstructed with an artificial vascular graft and the transected nerves were repaired. With simultaneous rehabilitation, the patient recovered from the hypovolemic shock and ischemic injury of the arm. Performing a median sternotomy for proximal clamping of the transected artery allowed control of the bleeding which could not be controlled by a pressure cuff. This procedure may be considered a safe and effective surgical option for patients with traumatic proximal upper extremity amputation.

Risk Factors Associated with Difficult Reversal of Heparin by Protamine Sulfate in Cardiopulmonary Bypass: An Ignored Issue

Background@#The aim of this study was to evaluate risk factors associated with difficult heparin reversal by protamine after cardiopulmonary bypass. @*Methods@#Data from 120 consecutive patients who underwent open heart surgery from 2009 to 2017 were retrospectively reviewed. Patients were divided into 2 groups: (1) those in whom complete heparin reversal was achieved after a single infusion of protamine (group A, n=89); and (2) those who required more protamine for heparin reversal (group B, n=31). @*Results@#Female sex, prolonged bypass time (>200 min), long aortic cross-clamping time (>120 min), and a lowest rectal temperature <26°C were significant predictors of difficult heparin reversal. Larger amounts of fresh frozen plasma and platelet concentrate were transfused in group B than in group A. @*Conclusion@#Surgeons’ efforts to reduce operative time and avoid deep hypothermia may be helpful for increasing the likelihood of easy heparin reversal, especially in female patients.

Clinical Value of Intraoperative Flow Measurements of Brachiocephalic Arteriovenous Fistulas for Hemodialysis

Background@#The aim of this study was to analyze the clinical outcomes of autogenous brachiocephalic arteriovenous fistulas and to investigate the factors associated with 1-year patency after initiation of hemodialysis. @*Methods@#We retrospectively reviewed the medical records of 41 patients who underwent surgery to create an autogenous brachiocephalic arteriovenous fistula between January 2015 and December 2017, received hemodialysis at the same hospital for longer than 1 year, and were monitored for their vascular access status. Intraoperative flow was measured using transit-time ultrasonography. @*Results@#The 1-year primary and secondary patency rates were 61% (n=25) and 87.8% (n=36), respectively. The functional group (subjects who required no intervention to maintain patency within the first year after hemodialysis initiation) displayed a significantly higher median intraoperative flow rate (450 mL/min) than the non-functional group (subjects who required intervention at least once regardless of 1-year patency) (275 mL/min) (p=0.038). Based on a receiver operating characteristic curve analysis, all patients were additionally subdivided into a high-flow group (>240 mL/min) and a low-flow group (≤240 mL/min). The high-flow group included a significantly greater number of functional brachiocephalic arteriovenous fistulas than the low-flow group (74.2% vs. 20%, respectively; p=0.007). @*Conclusion@#Transit-time flow, as measured with intraoperative transit-time ultrasonography, was associated with patency without the need for intervention at 1 year after initiation of hemodialysis.

Cardiac Autotransplantation with Concurrent Pneumonectomy for Complete Resection of Primary Cardiac Intimal Sarcoma

Primary cardiac sarcoma is rare, and intimal sarcoma is an extremely rare and highly lethal disease. We report a case of a 62-year-old woman who was incidentally diagnosed with a primary cardiac sarcoma originating from the left atrial appendage and extending to the left superior pulmonary vein. The location of the tumor was very complicated, posing a major challenge for complete resection. We successfully performed complete resection of the cardiac sarcoma via cardiac autotransplantation with left pneumonectomy. The patient recovered uneventfully, without any adjuvant therapy as of 6 months postoperatively. Autotransplantation of the heart may be suggested as a reasonable surgical option for extensive left atrial tumors.

Thoracic Endovascular Repair of Spinal Cord Infarction Resulting from Impending Rupture of the Thoracic Aortic Aneurysm

No abstract available.

Selective Shunting Based on Dual Monitoring with Electroencephalography and Stump Pressure for Carotid Endarterectomy

PURPOSE: The aim of this study is to analyze postoperative outcomes for carotid endarterectomy (CEA) in addition to the preoperative clinical characteristics related to selective shunting based on dual monitoring with stump pressure (SP) and electroencephalography (EEG). MATERIALS AND METHODS: We retrospectively reviewed medical records of 70 patients who underwent CEA from March 2010 to December 2017. CEA was performed under general anesthesia and selective shunting was done if the SP was lower than 35 mmHg regardless of EEG or if intraoperative EEG showed any changes different from preoperative one regardless of SP. RESULTS: There was no postoperative 30-day adjusted mortality or adverse cardiac events. Three patients (4.3%) had postoperative minor stroke finally reaching pre-operative neurologic status at the time of discharge. Twenty-six patients (37.1%) used shunting and severe contralateral internal carotid stenosis or occlusion was related to shunting (P < 0.010). There were larger number of symptomatic patients in shunt group in spite of no statistical significance (P=0.116). CONCLUSION: Perioperative stroke rate was 4.3% for CEA under general anesthesia based on dual intraoperative monitoring with SP and EEG. There was no 30-day adjusted mortality and adverse cardiac event. Severe stenosis or occlusion of contralateral internal carotid artery is related to shunting (P < 0.010).

Takotsubo Syndrome Resulting from Traumatic Multiple Rib Fractures

Takotsubo syndrome, also known as stress-induced cardiomyopathy, is a transient cardiac syndrome that mimics acute coronary syndrome. This condition should be suspected if the patient presents with chest pain after intense emotional stress, accompanied by an abnormal electrocardiogram, elevated levels of myocardial enzymes, and left ventricular apical akinesia on echocardiography. Coronary angiography should be performed for prompt differentiation from ischemic heart disease. A 77-year-old female presented with traumatic multiple fractures of the left sixth and seventh ribs resulting from a violent strike. Clinical findings of physical examination, laboratory tests, electrocardiogram, and coronary angiography provided the diagnosis of Takotsubo syndrome. We performed conservative management including pain control, and the patient was uneventfully discharged seven days after admission.

Dual Monitoring with Stump Pressure and Electroencephalography During Carotid Endarterectomy

BACKGROUND: Intraoperative monitoring during carotid endarterectomy is crucial for cerebral protection. We investigated the results of carotid endarterectomy under dual monitoring with stump pressure and electroencephalography. METHODS: We retrospectively reviewed the medical records of 50 patients who underwent carotid endarterectomy between March 2010 and February 2016. We inserted a temporary shunt if the stump pressure was lower than 35 mm Hg or if any intraoperative change was observed on electroencephalography. RESULTS: Seventeen (34%) patients used a temporary shunt, and the mean stump pressure was 26.8 mm Hg in the shunt group and 46.5 mm Hg in the non-shunt group. No postoperative mortality or bleeding occurred. Postoperatively, there were 3 cases (6%) of minor stroke, all of which took place in the shunt group. A comparison of the preoperative and the intraoperative characteristics of the shunt group with those of the non-shunt group revealed no statistically significant difference between the 2 groups (p <0.01). CONCLUSION: Dual monitoring with stump pressure and electroencephalography was found to be a safe and reliable monitoring method with results comparable to those obtained using single monitoring. Further study should be performed to investigate the precise role of each monitoring method.

Unusual Presentation of a Cervical Mass Revealed as External Jugular Venous Aneurysm

Venous aneurysms of the jugular vein are one of the rare causes of neck swelling, and primary venous aneurysms of the external jugular vein are extremely rare. A 46-year-old woman presented with a painless and suddenly growing mass in the left neck. A computed tomography angiography revealed a fusiform venous aneurysm of the external jugular vein containing intraluminal thrombus. We performed resection of the aneurysm and ligation of the external jugular vein. Removal of the aneurysm of the neck vein was necessary because venous aneurysms with thrombosis may lead to serious thrombotic complications such as pulmonary embolism.

A Clinical Experience of Massive Transfusion in a Patient with Cardiac Arrest Resulting from Abdominal Aortic Aneurysm Rupture / 대한수혈학회지

We report on a case of successful management of a patient with abdominal aortic rupture requiring massive blood transfusion during the peri-operative period. The patient had fully recovered 19 days after the operation, through intra-operative cardiac arrest and massive transfusion. We analyze a process of blood transfusion and related complications resulting from massive transfusion in order to establish a treatment for peri-operative patients with hypovolemic shock.

Difference in Treatment Outcome in Hospitalized Major Depression Patients with versus without Anxious Distress Specifier in DSM-5 / 대한정신약물학회지

OBJECTIVE: In Diagnostic and Statistical Manual of Mental Disorders, fifth edition (DSM-5), a new specifier of major depressive disorder (MDD) "with anxious distress" allows characterization of additional symptoms. The aim of this study was to investigate difference in treatment outcome of MDD with versus without anxious distress specifier in DSM-5. METHODS: Retrospective chart review of patients admitted to a university hospital with a primary diagnosis of MDD in a period from March 2013 to September 2014 was conducted. We reviewed anxious distress symptoms, medications and detailed clinical information at index episode. We compared treatment outcomes of anxious distress group with those of non anxious distress group. RESULTS: There were differences in remission rate after 4 weeks later (18.5% vs. 44.4%, p=0.040) and at discharge (33.3% vs. 66.7%, p=0.014) between anxious distress and non anxious distress. However, no significant differences were observed in the sociodemographic characteristics, treatment regimens, and response rate. CONCLUSION: Anxious distress specifier might be worthwhile to be further evaluated as a diagnostic entity of its own requiring specific diagnosis and therapeutic attention.

Isolated Chylopericardium after Mitral Valve Replacement: the First Description of Adult Heart Disease in Korea / 대한구급학회지

Isolated chylopericardium as a complication of cardiac surgery is very rare. Two cases of chylopericardium have been previously reported in Korea; both patients suffered from chylopericardium after a corrective cardiac surgery for a congenital heart disease such as atrial or ventricular septal defect. We report a case of chylopericardium in a 55-year-old mitral valve replacement patient. The reason for chylopericardium was unclear, but it might have been related with the damaged lymph nodes and blunt dissection of the thymus. While most chylopericardium cases require surgical intervention, we managed this chylopericardium case with a low-fat diet for 3 days.

Extracorporeal Membrane Oxygenation as a Rescue Therapy in a Patient with Non-Iatrogenic Massive Hemoptysis / 대한구급학회지

Despite the advanced technologies of intensive care, massive hemoptysis can still cause death in a small subset of patients. Extracorporeal membrane oxygenation (ECMO) is expected to provide adequate gas exchange, to reduce ventilator-induced lung injuries, and to eventually improve outcomes in these patients. Also, the instability of vital signs due to hemoptysis makes it impossible to perform immediate interventional procedures such as embolization and resectional surgery. In these cases, ECMO may be instituted as a bridge therapy. Herein, we describe the detailed course of our case, with the hopes of helping physicians to decide when to initiate ECMO in patients with massive hemoptysis.

A Giant Popliteal Artery Aneurysm Treated with Exclusion and Bypass Using a Saphenous Vein

While popliteal artery aneurysm is the most common form of peripheral artery aneurysm, it is a rare condition in the general population. Furthermore, a giant popliteal artery aneurysm has not previously been reported in Korea. A 67-year-old male presented with left thigh pain that had begun 4 months earlier and was aggravated when in a sitting position. We found a giant aneurysm on the left popliteal artery and performed a bypass from the common femoral artery to the distal popliteal artery below the knee, using the autologous greater saphenous vein, and excluded the aneurysm at the sites of anastomoses.

Massive Spontaneous Diaphragmatic Rupture Induced by a Squatting Position

While a diaphragmatic rupture commonly results from trauma to the abdomen and chest, a spontaneous diaphragmatic rupture is very rare. A 68-year-old male presented with chest pain that had originated while doing farm work in a squatting position. Images revealed a 5 cm defect of the left diaphragmatic dome, and the entire stomach was displaced into the thorax. The diaphragmatic defect was round and half had a well-demarcated margin. The remaining fragile tissue was completely excised and was closed primarily. The patient was uneventfully discharged and resumed with a normal diet 10 days after the operation.

Massive Spontaneous Diaphragmatic Rupture Induced by a Squatting Position

While a diaphragmatic rupture commonly results from trauma to the abdomen and chest, a spontaneous diaphragmatic rupture is very rare. A 68-year-old male presented with chest pain that had originated while doing farm work in a squatting position. Images revealed a 5 cm defect of the left diaphragmatic dome, and the entire stomach was displaced into the thorax. The diaphragmatic defect was round and half had a well-demarcated margin. The remaining fragile tissue was completely excised and was closed primarily. The patient was uneventfully discharged and resumed with a normal diet 10 days after the operation.

Expression of Matrix Metalloproteinase-2 and -13 and Tissue Inhibitor of Metalloproteinase-4 in Varicose Veins

BACKGROUND: The relationship between the degree of expression of matrix metalloproteinases or tissue inhibitor of metalloproteinases and venous reflux remains to be investigated. MATERIALS AND METHODS: Primary varicose vein tissues were obtained from 23 patients, 18 females and 5 males, aged from 19 to 73. Cephalic or basilic veins were obtained for the control group from 10 patients who underwent vascular access for maintenance hemodialysis. Two operative techniques (high ligation with stripping or endovenous laser coagulation) were used. The expression of matrix metalloproteinase-2 and 13 and tissue inhibitor of metalloproteinase-4 in the varicose vein group and control group was assessed semi-quantitatively by immunohistochemical slides stained with primary antibodies. RESULTS: Twenty (87%) of the varicose vein group patients had greater or lesser saphenous vein diseases with reflux. The focal weak (+) stain for matrix metalloproteinases-2, and 13, and tissue inhibitor of matrix metalloproteinase-4 was dominant in the varicose vein group; the focal or diffuse strong stain (++ or +++) was prevalent in the control group. The differences were statistically significant (p<0.01). The degree of reflux and the duration of symptoms were not significantly related to the expression of MMP-13 (p=0.317 and p=0.654, respectively). CONCLUSION: Further study should be performed to investigate the relationship between the clinical characteristics related to venous hypertension or reflux and expression of MMPs and TIMP in varicose veins.

Track Seeding in a Breast Cancer Patient after a 14-Gauge Core Needle Biopsy: A Case Report

US-guided large-gauge core needle biopsy has replaced fine-needle aspiration and excisional biopsy for sampling suspicious breast lesions. The core needle biopsy has many advantages: it is relatively simple, it can be done with local anesthesia, it enables accurate targeting under sonographic guidance and it leaves no scar. However, one rare disadvantage of this technique is the possible seeding of malignant cells along the needle track. We report here on a case of gross track seeding in a 76-year-old woman, and this was observed 70 days after performing a 14-gauge core needle biopsy.