지난 1년간 중환자의학 관련된 주요 연구 결과들이 많이 발표되었다. 우선 급성호흡곤란 증후군 치료에 있어서는 high PEEP이 사망률을 감소시키지는 못하였으나, 저산소증 개선이나 다른 임상 지표의 호전을 가져온다는 대규모 임상 연구 결과들이 발표되어, high PEEP의 유용성이 다시금 주목을 받게 되었다. 패혈증 치료에 있어서는 기존 연구 결과와는 달리 적극적 인슐린 치료나 corticosteroid 치료는 사망률 감소에 도움이 못 된다는 연구 결과가 발표되었고, 혈압 유지에 있어서 vasopressor 간의 차이를 보고자 한 연구들에서도 각 약제 간의 유의한 차이는 보이지 못하였다. 감염 영역에서는 중환자실에서 chlorhexidine으로 매일 환자를 목욕시키는 것이 간편하고 효율적으로 감염을 예방할 수 있는 방법이라는 연구 결과가 있었고, procalcitonin 측정이 항생제 투여 기간을 줄일 수 있었다는 연구 결과도 있었다. 기존의 연구 결과와 유사하게 급성 폐손상 환자에서도 적혈구 수혈이 사망률 증가와 관련 있다는 연구가 발표되었으나, 적혈구 수혈을 줄이기 위해 epoetin alfa 투여를 시도한 연구에서는 적혈구 수혈량을 감소시킬 수는 없었다는 부정적인 결과도 나왔다. 중환자실에서 매일 진정제를 끊고 환자를 깨우면서 동시에 자발 호흡을 시도하는 것이 기존 방법에 비하여 재원기간을 줄이고, 사망률도 감소시킬 수 있음을 보여준 논문이 발표되었고, 새로운 진정제인 dexmedetomidine이 lorazepam에 비해 우월함을 입증한 연구 결과도 발표되었다. 또한, 임종을 맞이한 환자의 보호자들과 의료진과의 긴밀한 의사 소통의 중요성을 강조한 논문도 있었다. 중환자의학은 계속 발전해 나가는 학문으로 매년 새로운 연구 결과들이 발표되고 있으므로 이에 대한 지속적인 관심이 필요할 것으로 사료된다.
Background: Isoniazid (INH, H) is a key drug of the standard first-line regimen for the treatment of tuberculosis(TB), yet some reports have suggested that treatment efficacy was maintained even though INH was omitted from the treatment regimen. Methods: One hundred forty C57BL/6 mice were infected with the H37Rv strain of M. tuberculosis with using a Glas-Col aerosol generation device, and this resulted in depositing about 100 bacilli in the lung. Four weeks after infection, anti-TB treatment was initiated with varying regimens for 4-8 weeks; Group 1: no treatment (control),Group 2 (4HREZ): 4 weeks of INH, rifampicin (R), pyrazinamide (Z) and ethambutol (E), Group 3: 1HREZ/3REZ,Group 4: 4REZ, Group 5: 4HREZ/4HRE, Group 6: 1HREZ/3REZ/4RE, and Group 7: 4REZ/4RE. The lungs and spleens were harvested at several time points until 28 weeks after infection, and the colony-forming unit (CFU) counts were determined. Results: The CFU counts increased steadily after infection in the control group. In the 4-week treatment groups (Group 2-4), even though the culture was negative at treatment completion, the bacilli grew again at the 12-week and 20-week time points after completion of treatment. In the 8-week treatment groups (Groups 5-7), the bacilli did not grow in the lung at 4 weeks after treatment initiation and thereafter. In the spleens of Group 7 in which INH was omitted from the treatment regimen, the culture was negative at 4-weeks after treatment initiation and thereafter. However, in Groups 5 and 6 in which INH was taken continuously or intermittently, the bacilli grew in the spleen at some time points after completion of treatment. Conclusion: TThe exclusion of INH from the standard first-line regimen did not affect the treatment outcome in a murine model of TB in the early stage of disease. Further studies using a murine model of chronic TB are necessary to clarify the role of INH in the standard first-line regimen for treating TB.
Background: The control of active pulmonary tuberculosis is still an issue in community medicine. But there are also considerable needs for supportive management of symptomatic patients with post-tuberculous destroyed lung.Few studies have evaluated clinical characteristics and health-related quality of life in patients with post-tuberculous destroyed lung. Methods: We evaluated lung function, exercise tolerance, HRCT and health-related quality of life measurements using the Korean version of St. George’s Respiratory Questionnaire (SGRQ) in 22 patients with parenchymal damage to more than a half of one lung due to pulmonary tuberculosis. Results: In the pulmonary function test, mixed defects and obstructive defects were observed in 10 (45.0%) and 9 (40.9%) of patients, respectively. In the cardiopulmonary exercise test, the mean VO2max% predicted (39.0%±10.9%) and O2 pulse% predicted (61.3%±13.6%) were markedly decreased. In the SGRQ, the impact score (mean 27.8±18.5) was significantly lower than the symptom score (mean 53.9±20.9) or activity score (mean 50.8±27.3) (p＜0.05,p＜0.01). Cronbach’s alpha coefficient value for reliability was more than 0.7 for each subscale and total score. The total score showed a significant negative correlation with FEV1% predicted (r=−0.46, p＜0.05) and SaO2 (r=−0.60, p＜0.05). On HRCT, a median of 9 (range 5∼15) bronchopulmonary segments were destroyed by less than half, which significantly correlated with SGRQ total score (r=−0.52, p=0.02). Conclusion: The reliability and validity of the Korean version of the SGRQ was acceptable for the measurement of health-related quality of life in patients with post-tuberculous destroyed lung.
Background: Due to the irreversible nature of chronic obstructive pulmonary disease (COPD), the treatment aim in patients with COPD is not to cure but to reduce the symptoms, increase lung function, and improve the quality of life. It has been suggested that depression is a common emotional disturbance in patients with COPD who are faced with a major physical impairment and embarrassing symptoms. This study evaluated the prevalence and risk factors of depression in patients with chronic obstructive pulmonary disease. Methods: A total of 59 patients with a registered diagnosis of chronic obstructive pulmonary disease were selected. Depression was assessed using the Centers for Epidemiologic Studies Depression (CES-D) scale. The quality of life was assessed using the Korean version of the St. George’s Respiratory Questionnaire. Results: The prevalence of depression was 17.0%. In the correlation model, the interaction of the FEV1% over predicted value and SGRQ score(symptom, activity, impact, overall score) was statistically significant. The interaction of the FEV1% over predicted value and depression scale(CES-D) was also statistically significant. There was a positive correlation between the SGRQ scores(symptom, activity, impact, overall score) and the depression scale. Conclusion: The prevalence of depression in patients with chronic obstructive pulmonary disease is relatively high. The pulmonary function and the living standards were found to be significant risk factors for depression
Background: Tracheobronchial suctioning using the closed suctioning system has physiological benefits for critically ill patients. Despite these benefits, there are concerns about increased colonization of tracheobronchial tree by pathogenic organisms. The cost is anotherhinder to the introduction of closed suction system. The aim of this study was to evaluate the incidence of colonization and ventilator associated pneumonia and the cost-effectiveness of closed suction compared with open suction. Methods: During separated one month period, patients admitted MICU were cared by multiple-use, open suction, single-use, open suction and multiple-use, closed suction method, consecutively. Costs, colonization of tracheobronchial tree by MRSA and the incidence of ventilator-associated pneumonia (VAP) were analyzed. Results: One-hundred and six patients were enrolled. Twenty patients were treated with multiple-use, open suction, while 42 and 44 patients were cared with single- use, open catheter and multiple-use, closed catheter, respectively. Colonization by MRSA and the incidence of VAP were not different among three ways of suctioning. The overall costs per patient per day for suctioning were $10.58 for multiple-use, open suction, $28.27 for single-use, open suction and $23.76 for multiple- use, closed suction. Conclusion: Multiple-use, closed suctioning, when suction catheters were changed every 48 hrs, has the similar incidence of colonization of MRSA and occurrence of VAP and is a cost-efficient way of endotracheal suction.
저자들은 발열, 기침, 객담을 주소로 입원한 24세 남환의 임상증상, 이학적 검사, 혈청학적 및 면역학적, 유전자검사상 X연관 무감마글로불린혈증으로 진단된 예를 관찰하였기에 문헌 고찰과 함께 보고 하는 바이다. 반복적인 감염을 보이는 젊은 성인 환자에서 유전자 이상(Btk gene mutation)에 의한 면역결핍질환(X-linked agammaglobulinemia)의 가능성을 꼭 의심해 보아야 한다.
X-linked agammaglobulinemia is the most common type of primary immunodeficiency disorder. Mutation ofthe cytoplasmic tyrosine kinase gene, Btk (Bruton’s tyrosine kinase), is known to be the etiology of X-linked agammaglobulinemia. The patients with this disease manifest a B-cell deficiency and low levels of serum immunoglobulin;due to the deficient antibodies, they suffers from recurrent upper and lower respiratory infections. We report here a 24-year-old male with an initial clinical impression of recurrent pneumonia and bronchiectasis. The patient presented with marked pan-hypogammaglobulinemia and the absence of circulating B lymphocytes on the immunologic study, and he carried a splicing mutation of intron 2 in the Btk gene (IVS2 −3C＞G).
본 증례는 와파린을 복용하던 72세 여자가 기침을 심하게 하던 중 하복부 통증과 압통을 보이는 복부 팽만이 발생하여 복부 전산화단층촬영을 통해 복직근초 혈종을 진단한 경우이다. 복직근초 혈종은 매우 드물지만 항응고제를 복용하는 고령 환자나 분만을 했거나 복부 수술을 받은 경우 등에서 발생할 수 있고, 드물게 기침에 의해서도 발생할수 있다. 따라서 이런 환자에서 심한 복통이나 복부 종물이 관찰되는 경우 그 가능성을 한 번쯤 생각해보아야 하겠다.전산화단층촬영은 복직근초 혈종 진단의 특이성과 민감도가 높아 진단에 도움이 되며 대부분은 보존적인 치료만으로 회복되므로 본 질환의 위험인자와 진단방법에 대해 숙지하고 정확한 진단을 하는 것이 무엇보다도 중요하겠다.
Rectus sheath hematoma (RSH) is a rare condition that’s caused by a sudden disruption of the deep epigastric vessels or direct damage to the rectus abdominis muscle. This condition is associated with old age, childbirth, abdominal surgery, severe cough, severe sneezing, anticoagulation therapy and/or coagulation disorders. RSH is characterized by abdominal pain and an abdominal mass, so that this is often misdiagnosed as a surgical condition such as appendicitis, intraabdominal abscess, torsion of the ovary and ruptured abdominal aortic aneurysm; this can lead to unnecessary surgery. Thus, we have to be cautious not to miss RSH when a patient with predisposing factors is suffered from abdominal pain and an abdominal mass. We report here on a case of rectus sheath hematoma that was induced by severe cough in a patient who was taking warfarin.
저자들은 대량 객혈로 발현한 흉곽 내 만성 팽창성 혈종 1예를 보고한다. 이 증례는 이전의 증례와 달리 결핵성 늑막염이나 흉부 수술, 외상의 과거력 없이 자연 발생한 증례라는 점에서 의의가 있다. 또한 무증상, 호흡곤란 등으로 발현했던 대부분의 증례와는 달리 드물게 대량객혈로 발현하였으며, 이러한 대량객혈이 기관지흉막루를 동반하여 발생하여 기관지동맥 색전술과 수술로 치료되었다는 점에서 특징적이다. 증례보고와 함께 문헌고찰을 통해 과거 보고된 흉곽 내 만성 팽창성 혈종의 임상양상에 대해 표로 정리하였다.
A chronic expanding hematoma (CEH) in the thorax is a rare and specific condition of chronic empyema. CEHs in the thorax are often associated with tuberculosis and/or previous surgical procedures. While the incidental detection of a pleural mass and dyspnea are common clinical manifestations, a few cases present with hemoptysis. We encountered a case of CEH in the thorax. This case is unique in that it developed without a prior history of tuberculosis or surgery and presented with massive hemoptysis accompanied by bronchopleural fistula. We report the third case of CEH in the thorax in Korea with a summary of the clinical characteristics of previous cases.
자발성 종격동기종은 기저질환이나 외상의 병력이 없이 발생할 수 있고 드물게는 운동중에 발생할 수 있다. 저자들은 23세 남자 환자에서 태권도중에 발생한 자발성 종격동기종 1예를 경험하였기에 이를 문헌고찰과 함께 보고하는 바이다
Spontaneous pneumomediastinum is defined as a clinical syndrome that’s characterized by the presence of air in the mediastinal space, which is not due to an old previous injury or surgery. The condition is caused by a sustained increase in the intraalveolar and intrabronchial pressure with extravasated air dissecting along the perivascular spaces of the mediastinum. This is an uncommon complication of sports activity. The most common symptom is chest pain. This diagnosis should be considered for younger people who present with pleuritic chest pain or dyspnea and a characteristic crackling feel (known as subcutaneous crepitation) when touching of the skin covering the chest wall or neck, and they look otherwise well with normal vital signs. Usually no treatment is required, but the mediastinal air will be absorbed faster if the patient inspires high concentrations of oxygen. We present here a case of spontaneous pneumomediastinum that occurred during a Taekwondo match, along with a review of the relevant literature
저자들은 폐색전증과 심부정맥 혈전증을 이전에 진단받았던 말기 전립선암환자에서 외상성 뇌출혈로 인해 항응고제 치료를 시행하지 못하여 하대정맥 필터를 삽입 후 하지 부종, 하지 맥압 소실, 급성 신부전 및 DIC 등으로 사망한 phlegmasia cerulea dolens 1예를 경험하였기에 문헌고찰과 함께 보고하는 바이다.
Inferior vena cava filters are increasingly being used as an alternative to anticoagulation therapy for the prevention of pulmonary embolism. However, using an Inferior vena cava filter may result in clinically significant complications. Phlegmasia cerulea dolens is a rare disease that presents with acute complete venous occlusion due to extensive thrombosis in the lower extremity. It is characterized by intense pain, edema, decreased pulses and a cyanotic extremity. We report here on a case of phlegmasia cerulea dolens that was accompanied with disseminated intravascular coagulation (DIC) as a complication of the placement of an inferior vena cava filter in a patient who had been previously diagnosed with pulmonary embolism, and the patient had recently developed a cerebral hemorrhage due to a traffic accident.
본 증례에서 환자는 폐렴 치료 중 갑자기 발생한 복통을 주소로 급성 충수염을 진단받고 수술을 시행 받았다. 그 후 조직 검사 결과 소세포암으로 진단되었고 폐병변에 대해 추가적인 검사 결과 소세포폐암이 진단된 경우이다. 저자들은 소세포폐암의 충수 전이를 국내에서 처음으로 경험하여 문헌고찰과 함께 보고하는 바이다.
The incidence of appendiceal metastatic cancer is quite low. In particular, in small cell lung cancer, there is a very low incidence of a metastasis to the appendix. A 75-years old man with right lower quadrant pain, cough and sputum was transferred to our hospital. Abdominal CT revealed acute appendicitis with a perforation. The patient underwent surgery. The frozen sections of the tissue obtained during surgery, indicated a malignancy, but a right hemicolectomy was not performed due to the patient’s poor general condition. The histology findings of the appendix were identified as a small cell carcinoma. The abdominal CT scan and chest x-ray at admission day showed a mass in the right lower lobe, and a further evaluation of the lesion was performed including positron emission tomography and flexible bronchoscopy with a biopsy. The pathology findings of the lung mass were also small cell lung cancer. The specimens from both sites stained positive for cytokeratin, cluster designation 56, synaptophysin, chromogranin-A and thyroid transcription factor 1. It was concluded that the appendiceal small cell cancer originated from the lung.
외인성 지방성 폐렴은 자세한 병력 청취 없이는 의심하기 힘든 비교적 드문 질환이다. 저자들은 비특이적인 임상 증상과 방사선 소견을 보인 환자에서 스쿠알렌을 섭취한 과거력에 주목하였으며 외인성 지방성 폐렴을 의심 하에 기관지폐세척술 및 폐 생검을 통하여 확진하였다.
Exogenous lipoid pneumonia is an uncommon disease that’s caused by aspirating lipid formulations. Squalene,obtained from shark liver oil, is one of the causative agent and this is commonly used by some Koreans as a health promoting medication. We report here on a case of exogenous lipoid pneumonia that developed after ingestion of squalene capsules. The case showed milky BAL fluid and multiple pulmonary consolidations