This study aimed to characterize the seasonal abundance of hard ticks that transmit severe fever with thrombocytopenia syndrome virus from April to November 2019 and 2020 on Ganghwa-do, Incheon Metropolitan City, Korea. The ticks were collected at grassland, grave site, copse and mountain road using a collection trap method. The ixodid hard ticks comprising three species (Haemaphysalis longicornis, H. flava, and Ixodes nipponensis) collected were 6,622 in 2019 and 3,811 in 2020. H. longicornis was the most frequent (97.9% in 2019 and 96.0% in 2020), followed by H. flava (2.0% and 3.0% in 2019 and 2020, respectively) and I. nipponensis (less than 0.1%). Our study demonstrated that seasonal patterns of the tick populations examined for two years were totally unsimilar. The hard ticks tested using RT-qPCR were all negative for severe fever with thrombocytopenia syndrome virus.

This study aimed to characterize the seasonal abundance of hard ticks that transmit severe fever with thrombocytopenia syndrome virus from April to November 2019 and 2020 on Ganghwa-do, Incheon Metropolitan City, Korea. The ticks were collected at grassland, grave site, copse and mountain road using a collection trap method. The ixodid hard ticks comprising three species (Haemaphysalis longicornis, H. flava, and Ixodes nipponensis) collected were 6,622 in 2019 and 3,811 in 2020. H. longicornis was the most frequent (97.9% in 2019 and 96.0% in 2020), followed by H. flava (2.0% and 3.0% in 2019 and 2020, respectively) and I. nipponensis (less than 0.1%). Our study demonstrated that seasonal patterns of the tick populations examined for two years were totally unsimilar. The hard ticks tested using RT-qPCR were all negative for severe fever with thrombocytopenia syndrome virus.

Vancomycin, one of glycopeptide antibiotics, has been used in recent years with the emergence of methicillin- resistant staphylococcus aureus (MRSA), coagulase negative staphylococci (CNS) as important hospital pathogens. A 75 years male patient receiving vancomycin 1g intravenously as twice daily dose for treatment of bacterial endocarditis, suffered from high fever, generalized diffuse erythematous maculopapular eruption, itching and eosinophilia, during course of 16th day of vancomycin therapy for treatment of bacterial endocarditis. This delayed hypersensitivity reaction was resolved with discontinuation of the drug and treatment with antihistamine. Awareness of vancomycin associated delayed hypersensitivity reactions is necessary during the treatment in patients with long-term infusion of vancomyin despite of delayed cutaneous reaction and fever associated with vancomycin therapy is not common.
Anti-Bacterial Agents ; Coagulase ; Endocarditis, Bacterial* ; Eosinophilia ; Fever ; Humans ; Hypersensitivity, Delayed* ; Male ; Pruritus ; Staphylococcus aureus ; Vancomycin*

The Eisenmenger syndrome is characterized by severe irreversible pulmonary hypertension and right-to-left shunting of blood through the pulmonary-systemic communication. The resultant right-to-left shunt leads to clinical cyanosis and secondary manifestations of chronic hypoxemia. Clinical features include dyspnea on exertion, fatigue, palpitation, hemoptysis, syncope, chest pain and predisposition to brain abscess and cerebrovascular accident. Brain abscess is a serious complication of cyanotic congenital heart disease and major cause of death. We report a patient with Eisenmenger syndrome in whom the presence of right-to-left shunt and paradoxical embolism appears to be critical for the development of brain abscess.
Anoxia ; Brain Abscess* ; Brain* ; Cause of Death ; Chest Pain ; Cyanosis ; Dyspnea ; Eisenmenger Complex* ; Embolism, Paradoxical ; Fatigue ; Heart Defects, Congenital ; Hemoptysis ; Humans ; Hypertension, Pulmonary ; Stroke ; Syncope

BACKGROUNG AND OBJECTIVES: There were numerous reports for clinical characteristics and prognosis of patients with variant angina (VA) but little information is available for patients with VA who presented as acute myocardial infarction (AMI). The purpose of this study is to determine the clinical and angiographic predictors for initial development of AMI in patients with VA and prognosis of patients with VA who presented as AMI. MATERIALS AND METHODS: The study group comprised 166 patients with VA:forty one (25%) of whom presented as AMI (Group A;Male 32, mean age 50 years) and 125 presented as typical VA or unstable angina (Group B;Male 73, mean age 54 years). The diagnosis of VA was made by spontaneous spasm and ergonovine or acetylcholine (only Group B) provocation. RESULTS: 1)Male gender (78% vs. 58%, p<0.05), smoking (74% vs. 53%, p<0.05), and disease duration (18+/-5 vs. 7+/-1 month, p<0.0001), and ST-segment elevation during chest pain (71% vs. 23%, p<0.05) were significantly higher in group A than in Group B. 2)Prevalence of fixed stenosis of 50% or greater was higher in Group A than in group B (12% vs. 2%, p<0.05) and the percent stenosis after nitroglycerin injection was also greater in group A than in group B (43+/-5% vs. 28+/-2, p<0.01), but the disease activity such as frequency of resting angina, spontaneous spasm, and multivessel spasm were not different between two groups. 3)During clinical follow-up at a mean duration of 2.7 years, three patient (2%) in group B died of a cardiac cause. Non-fatal MI occurred 1 (2%) and 3 patients (2%) in group A and B, respectively. CONCLUSIONS: Our data show that male gender, smoking, duration of disease, ST-segment elevation during chest pain, and a fixed stenosis of 50% or greater are predictors for initial development of AMI in patients with VA. The prognosis in group A is excellent and this may be associated with less severe atherosclerotic disease and a high rate of medication with calcium channel blocker or nitrate compared with those in previous studies.
Acetylcholine ; Angina, Unstable ; Calcium Channels ; Chest Pain ; Constriction, Pathologic ; Diagnosis ; Ergonovine ; Follow-Up Studies* ; Humans ; Male ; Myocardial Infarction* ; Nitroglycerin ; Prognosis ; Smoke ; Smoking ; Spasm

Percutaneous transluminal coronary angioplasty (PTCA) is a relatively safe and effective procedure in the treatment of coronary artery disease, but complications related to dilating catheters and guide wires such as coronary artery dissection, spasm, rupture, and perforation can be. Pericardial tamponade is a rare complication of cardiac catheterization, and prompt diagnosis and proper management are important in lifesaving. We report 4 patients who developed pericardial tamponade following PTCA, presumably from coronary artery or right ventricular perforation. All 4 patients received heparin during PTCA and temporary pacemaker was placed in the right ventricle. Pericardial tamponade was recognized in the catheterization laboratory in 1 patient, within 3 hours after leaving the laboratory in 3 patients. Emergent pericardiocentesis was performed in all patients. Three patients recovered and one patient died.
Angioplasty, Balloon, Coronary* ; Cardiac Catheterization ; Cardiac Catheters ; Cardiac Tamponade* ; Catheterization ; Catheters ; Coronary Artery Disease ; Coronary Vessels ; Diagnosis ; Heart Ventricles ; Heparin ; Humans ; Pericardiocentesis ; Rupture ; Spasm

BACKGROUND AND OBJECTIVES: Identification of coronary sites susceptible to progression or nonprogression might provide additional information to select medical or surgical treatment and furthermore for appropriate timing for percutaneous transluminal coronary angioplasty or coronary artery bypass graft. METHODS: We reviewed serial coronary arteriograms of 50 patients with coronary artery disease retrospectively. Patients were managed with standard treatment including anti-hypertensives, antiplatelets, lipid-lowering agents and other risk factor management by attending physician's decision. Patients who received percutaneous transluminal angioplasty, coronary artery bypass graft or thrombolysis were excluded. Cononary arteriographies were undertaken with average 33 months interval. Criteria for the progression and regression were the changes of the luminal diameter narrowing of the arterial segment by 20% or more reduction or increase, respectively. Results: Patients show progressive change, regressive change or no significant interval change in 50%, 12% and 30% of total 50 patients, respectively. Male gender, angiographic interval were the significant predictor of progressive change. In terms of coronary segment, stable segments are most frequent 52.2% (72/138) and progression in 40.2% (74/184), regression in 27.5% (38/138). Initial coronary lesions with low grade stenosis (less than 50%) have a tendency to progress than that of high grade stenosis (70% or more) Percentage diameter stenosis of new lesion are not related linearly with the interval between two sequential angiographies. CONCLUSION: Number of patients with progressive coronary arteriogram are more frequent than the patients with regressive change or no interval change. Progression and regression are frequent finding of serial coronary arteriography in usual clinical practice. Progression and regression are found frequently in the same patient at different coronary branches (16 patients). It suggested that the local factors may play an important role in the pathogenesis of coronary artery disease as well as systemic risk factors.
Angiography* ; Angioplasty ; Angioplasty, Balloon, Coronary ; Antihypertensive Agents ; Constriction, Pathologic ; Coronary Artery Bypass ; Coronary Artery Disease ; Humans ; Male ; Phenobarbital ; Retrospective Studies ; Risk Factors ; Transplants

Infective endocarditis is still one of the important fatal diseases, especially with systemic embolic manifestations. Infective endocarditis is often misdiagnosed because of variability of systemic embolic manifestations. We have experienced 3 cases of infective endocarditis with systemic embolic manifestations who were initially misdiagnosed as other infectious diseases. Case 1 is a 66 year-old man, who was admitted to our hospital with dyspnea , fever and petechia. His chest X-ray showed rapid decrease of cardiomegaly and pulmonary congestion in two days. At 1 week after discharge he was readmitted for recurrent fever. On the follow-up echocardiography, mitral regurgitation was newly detected. Case 2 is a 75 year-old man, who was admitted to neurology department with sudden left hemiplegia and headache, in whom it was initially difficult to differentiate from ischemic brain infarction. Case 3 is a 29 year-old man, who was admitted to neurosurgery department with fever and back pain, in whom it was initially difficult to diffrentiate from tuberculous spondylitis in early radiologic study. All 3 cases were treated effectively with appropriate antibiotic therapy and discharged with improvement of symptoms. We report 3 cases of systemic embolic manifestations complicated by infective endocarditis with a brief review of literatures.
Adult ; Aged ; Back Pain ; Brain Infarction ; Cardiomegaly ; Communicable Diseases ; Dyspnea ; Echocardiography ; Embolism ; Endocarditis* ; Estrogens, Conjugated (USP) ; Fever ; Follow-Up Studies ; Headache ; Hemiplegia ; Humans ; Mitral Valve Insufficiency ; Neurology ; Neurosurgery ; Spondylitis ; Thorax

BACKGROUND: Left ventricular diastolic dysfunction is often observed in hypertensive patients with normal left ventricular systolic function and can cause heart failure symptoms. Doppler echocardiography has become a standard tool for examining left ventricular diastolic function. This study was performed to evaluate the left ventricular diastolic function in hypertensive patients with normal left ventricular systolic function and to determine the changes in left ventricular diastolic function after antihypertensive treatment. METHODS: Mitral inflow and pulmonary venous Row velocities were evaluated by transthoracic pulsed-wave Doppler study in patients with hypertension before antihypertensive treatment(n= 50) and after antihypertensive treatment for 4 months(n=24). The patients were randomly assigned to group I to receive ACE inhibitor or group II to receive other antihypertensive drugs. RESULTS: Before antihypertensive treatment, mitral inflow E/A ratio was 0.94+/-0.27, decele- ration time was 222+/-47 msec, and pulmonary venous flow S/D ratio was 1.62+/-0.42. Follow- up Doppler study was completed in 24 patients after 4 months of antihypertensive treatment. Mitral inflow E/A ratio was significantly increased(0.96+/-0.24 vs. 1.16+/-0.25, p<0.001), but deceleration time showed no significant changes. Pulmonary venous flow S/D ratio was signi- ficantly decreased(1.75+/-0.27 vs. 1.50+/-0.24, p<0.001). There was no significant difference in changes in mitral inflow E/A ratio, deceleration time and pulmonary venous flow S/D ratio between ACE inhibitor group and other antihypertensive group. CONCLUSION: There was some improvement in left ventricular diastolic function in patients with hypertension after 4 months of antihypertensive treatrnent. But, there was no significant difference in changes in diastolic parameters between ACE inhibitor group and other antihy- pertensive group.
Antihypertensive Agents ; Deceleration ; Echocardiography, Doppler ; Heart Failure ; Humans ; Hypertension*

BACKGROUND AND OBJECTIVES: This study was performed to determine the predictive factors for edge dissection (ED) and clinical significance of ED after coronary stenting. MATERIALS AND METHODS: The study group comprised 215 patients (243 lesions, mean age 59 years, 157 male) in whom coronary stents were implanted between June, 1994 and June, 1998. By angiography, EDs were categorized into minor (a very focal segment <5mm from the stent margin), major (>5mm with prominent adventitial staining and >50% of lumen compromize), and acute closure. RESULTS: 1.ED occurred in 30 (12.3%, minor 15, major 12) out of 243 lesions. Twelve of 30 EDs were located at the distal margin of the stent and occurred during high pressure. 2.Development of ED after stenting significantly correlated with severity of stenosis at the stent margin (> or =30%, 19/30 vs. 33/213, p=0.0001), degree of angulation (>45 0 , 16/30 vs. 48/213, p=0.0001), and calcification in the lesion (2/30 vs. 4/213, p=0.02). 3.There was no significant difference in clinical success rate between two groups (27/30 vs. 175/185, NS). 4.CRR in major and acute closure EDs (n=12) were significantly higher in patients treated with repeated angioplasty than in patients treated with additional stents (5/6 vs. 1/8, p=0.02). CONCLUSIONS: EDs after coronary stenting are relatively common and lesion's characteristics such as severity of stenosis (> or =30%) at the stent margin, angulation (>45 0 ), and calcification of the lesion are predictive factors for EDs. EDs are not associated with early adverse clinical events. However, CRR was significantly higher in patients treated by repeated angioplasty in major and acute closure EDs.
Angiography ; Angioplasty ; Constriction, Pathologic ; Follow-Up Studies* ; Humans ; Stents*