BACKGROUND: Acid-base derangement are commonly encountered in critically ill patients. This study is to investigate underlying mechanisms of acid-base imbalance and also to examine whether they can predict mortality in burn patients. METHODS: We retrospectively reviewed 73 severely burned patients who had admitted to burn intensive care unit, from January to July in 2004. All the patients had inhalation injury, identified by bronchoscopic examination. We analyzed the type and nature of the acid-base imbalances from arterial blood gas analysis, electrolytes and other biological tests between survivors and non-survivors for 30 days after admission. RESULTS: Acidosis was the most common disorder during the early and late hospital periods. Large fractions of those showed decreased strong ion difference (SID), increased anion gap corrected by albumin (AGc) and [Cl-]corrected. Mixed disorder and alkalosis emerged after the 7(th) hospital day. As time went by, albumin, PaO2/FiO2 ratio, pH and SID were more decreased in non-survivors (n=28) than in survivors (n=45) while [Cl-] corrected, alveolar-arterial oxygen tension gradients, peripheral WBC counts and CRP were more increased in non-survivors than in survivors. In the area under the receiver operating characteristic curves for mortality prediction, APACHE II score and % of total body surface area (%TBSA) burn were high: 0.866 (95% CI; 0.785~0.946) for APACHE II score, 0.817 (95% CI; 0.717~0.918) for %TBSA burn. CONCLUSIONS: In burned patients with inhalation injury, various types of acid-base imbalances and electrolytes abnormalities emerged after resuscitation and so, more careful attentions pursued for correcting underlying acid-base derangement.
Acid-Base Equilibrium ; Acid-Base Imbalance* ; Acidosis ; Alkalosis ; APACHE ; Attention ; Blood Gas Analysis ; Body Surface Area ; Burns* ; Critical Illness ; Diagnosis* ; Electrolytes ; Humans ; Hydrogen-Ion Concentration ; Inhalation* ; Intensive Care Units ; Mortality* ; Oxygen ; Resuscitation ; Retrospective Studies ; ROC Curve ; Sudden Infant Death ; Survivors

Purpose: A tracheostomy is often used to wean patients off the ventilator, as it helps maintain extracorporeal membrane oxygenation (ECMO) without sedation. A percutaneous dilatational tracheostomy (PDT) performed in critically ill patients is widely accepted, however, its feasibility and safety in ECMO is unclear. Methods: This retrospective observational study included 78 patients who underwent a PDT and ECMO at the surgical intensive care unit (SICU) in a tertiary hospital between January 1, 2016 and December 31, 2019. We analyzed their medical records, including PDT-related complications and clinical variables. Results: The median values of hemoglobin, platelet count, international normalized ratio, partial thromboplastin time, and activated partial thromboplastin time before the tracheostomy were 9.2 (8.5-10.2) g/dL, 81 (56-103) × 103/dL, 1.22 (1.13-1.30), 15.2 (14.3-16.1) seconds, and 55.1 (47.4-61.1) seconds, respectively. No clotting was observed within the extracorporeal circuit, however, minimal bleeding was observed at the tracheostomy site in 10 (12.8%) patients. Of 4 patients with major bleeding, local hemorrhage was controlled in 3 patients, and intratracheal bleeding continued in 1 patient. The mortality rate was 60.9% and 57.1% in the complication and no-complication group, respectively. The durations of SICU stay, hospital stay, and mechanical ventilation were not statistically different between the groups. Conclusion A PDT performed in critically ill patients was associated with a low rate of bleeding. Complications did not appear to significantly affect the patient outcome. PDT can be performed in patients who usually require a tracheostomy to maintain ECMO.

PURPOSE: Angiopoietin-1 (Ang-1) plays a crucial role in vascular and hematopoietic development, mainly through its cognate receptor, Tie-2. Increased levels of Ang-2 have been shown to be correlated with abnormal tumor angiogenesis in several malignancies. Hence, we estimated the increased expression of Ang-2 relative to Ang-1 in patients with colorectal cancer and correlated our finding with prognosis in order to investigate the relationships between the expressions of Ang-1/Ang-2/Tie-2 receptor and the clinical parameters or overall survival of such patients. METHODS: We retrospectively analyzed 114 tissue samples from patients with colorectal cancer by using immunohistochemistry (IHC) to examine Ang-1, Ang-2, and Tie-2 expressions and to investigate the relationship between those expressions and clinical parameters or overall survival of such patients. A Western blot analysis was used for Ang-2 expression. RESULTS: IHC staining showed a link between Ang-1 and Tie-2 (P = 0.018), as well as meaningful correlations between Ang-2 and Tie-2 receptor (P = 0.022) and between lymph-node metastasis and Ang-2 (P = 0.025). The stronger the IHC staining for Ang-2 expression was, the shorter the cumulative survival was (P = 0.016). CONCLUSION: A relationship was found to exist between Ang-2 and Tie-2 expressions. The Ang-2 was correlated with lymph-node metastasis, and high expression of Ang-2 was indicative of poor overall survival. These findings suggest that Ang-2 is a useful prognostic marker in the management of patients with colorectal cancer. In addition, we suggest that Ang/Tie-2 signaling plays an important role in the progression of colorectal cancer.
Angiopoietin-1* ; Angiopoietin-2* ; Angiopoietins ; Blotting, Western ; Colorectal Neoplasms* ; Humans ; Immunohistochemistry ; Neoplasm Metastasis ; Prognosis ; Receptor, TIE-2* ; Retrospective Studies

Objective: The goal of the present study was to identify factors related to the growth and growth patterns of unruptured intracranial aneurysms (UIAs). Methods: Between January 2011 and December 2018, a total of 275 patients were diagnosed with UIAs in our institution. Of them, 91 patients were evaluated using computed tomography angiography, magnetic resonance angiography, or digital subtraction angiography. Aneurysm size, morphology, location, and its changes were investigated. Patient factors, including gender, history of stroke, smoking, hypertension, diabetes mellitus, and excessive alcohol consumption, were studied to identify factors associated with aneurysm growth. Results: A total of 91 patients (121 aneurysms) with a mean follow-up duration of 37.2±23.9 months and a mean age of 64.0±11.4 years were included. The growth of unruptured aneurysms was identified in 23 patients (27 aneurysms, 22.3%). Regarding morphology, the diffuse growth pattern was the most common (12 aneurysms in 10 patients, 44.4%). Univariate analysis showed that patients with multiple aneurysms (p=0.010), history of stroke (p=0.021), and aneurysm location in the posterior circulation (p=0.029) were significantly associated with aneurysm growth. Conclusion The growth of an UIA is associated with the history of stroke, posterior location, and multiplicity. Considering the risk of unruptured aneurysm growth, patients with such risk factors should receive additional attention during follow-up.

Ipsilateral hemiparesis is a rare and challenging sign in clinical neurological practice.Although the etiology of this manifestation is poorly understood, recent studies have attempted to probe the pathomechanism of this sign with advanced radiological techniques.Additional knowledge about the lesion and unraveling the pathomechanisms causing neurological impairments are important to predict the prognosis and clinical course and to aid in rehabilitation. Therefore, we present a case of a patient with a traumatic subdural hematoma on the left hemisphere and left spastic hemiparesis. Using diffusion tensor imaging (DTI), we concluded that the right corticospinal tract injury caused by compression of the cerebral peduncle accounted for the ipsilateral hemiparesis, also known as Kernohan's notch phenomenon. Thus, this case report highlights the usefulness of the newer radiological techniques, such as DTI, to identify the pathomechanisms of neurological presentations.

A 74-year-old male patient was conducted total thyroidectomy with functional neck dissection and final pathologic report confirm occult thyroid carcinoma. Although the frequency of occult thyroid cancer (OTC) has decreased owing to developments in cervical ultrasonography and improved accuracy of histological tests, rare cases are still reported. Due to the decreased frequency of OTC, a benign cervical neck lymph node mass is sometimes diagnosed, which can result in delays to more accurate diagnoses and appropriate treatment. Therefore, we report our case.
Aged ; Diagnosis ; Humans ; Lymph Nodes ; Male ; Neck Dissection ; Neck ; Neoplasm Metastasis ; Thyroid Gland ; Thyroid Neoplasms ; Thyroidectomy ; Ultrasonography

On MRI, abnormal signals of the intervertebral disc, destruction of the upper and lower vertebral body endplate around the disc, and bone marrow edema around the endplate are considered typical findings of infectious spondylitis. These findings can also appear in various non-infectious spinal diseases, such as degenerative changes, acute Schmorl’s node, spondyloarthropathy, synovitis, acne, pustulosis, hyperostosis, and osteitis (SAPHO), chronic recurrent multifocal osteomyelitis, and calcium pyrophosphate dihydrate crystal deposition disease. The imaging findings of infectious spondylitis that can be differentiated from these non-infectious spinal diseases on MRI are high signal intensity and abscess of the disc space, an abscess in the paraspinal soft tissue, and the loss of the linear low signal intensity on T1-weighted images of the bony endplate. However, these differentiation points do not always apply since there are many similarities in the imaging findings of infectious and non-infectious diseases. Therefore, for an accurate diagnosis, it is important to know the imaging characteristics related to the pathophysiology of not only infectious spondylitis but also non-infectious spinal diseases, which requires differentiation from infection.

PURPOSE: A recent study demonstrated that exertional desaturation is a predictor of rapid decline in lung function in patients with chronic obstructive pulmonary disease (COPD); however, the study was limited by its method used to detect exertional desaturation. The main purpose of this study was to explore whether exertional desaturation assessed using nadir oxygen saturation (SpO2) during the 6-minute walk test (6MWT) can predict rapid lung function decline in patients with COPD. MATERIALS AND METHODS: A retrospective analysis was performed on 57 patients with moderate to very severe COPD who underwent the 6MWT. Exertional desaturation was defined as a nadir SpO2 of <90% during the 6MWT. Rapid decline was defined as an annual rate of decline in forced expiratory volume in 1 second (FEV1) > or =50 mL. Patients were divided into rapid decliner (n=26) and non-rapid decliner (n=31) groups. RESULTS: A statistically significant difference in exertional desaturation was observed between rapid decliners and non-rapid decliners (17 vs. 8, p=0.003). No differences were found between the groups for age, smoking status, BODE index, and FEV1. Multivariate analysis showed that exertional desaturation was a significant independent predictor of rapid decline in patients with COPD (relative risk, 6.8; 95% CI, 1.8 to 25.4; p=0.004). CONCLUSION: This study supports that exertional desaturation is a predictor of rapid lung function decline in male patients with COPD.
Aged ; Anoxia/diagnosis/etiology ; Exercise/*physiology ; Female ; Forced Expiratory Volume/physiology ; Humans ; Male ; Middle Aged ; Pulmonary Disease, Chronic Obstructive/*physiopathology ; Respiratory Function Tests ; Retrospective Studies

PURPOSE: Although not common, electrical injury may cause severe visceral injury. Injury severity depends on the amperage, the pathway of current through the victim's body, and the duration of contact with sources. Respiratory arrest is one of the common causes of acute death in serious electrical injury. But there are no specific injuries to the lungs or the airways directly attributable to electrical injury. Survivors of electrical injury may develop respiratory complications as a result of their injury or treatment. The purpose of this study is to review one institution's experience with electrical injury that may affect respiratory system. METHODS: From 2002 to 2007, 566 patients admitted to our institute were identified with electrical injury. Of these, 37 survived patients who had performed the spirometry were enrolled retrospectively. We analyzed the characteristics of electrical injury, clinical courses including respiratory complications and the findings of pulmonary function tests in the patients with electrical injury. RESULTS: The extent of the burn wounds ranged from 1% to 55% of total body surface area (mean, 16.19+/-17.83%). Of these injuries, 32 (86.5%) were high voltage (> or =1,000 V) and 3 (8.1%) were low voltage (<1,000 V). All patients were men and work-related, with the most common occupations being electricians (45.9%) and construction workers (37.8%). The average hospital stay was 111.3+/-78.9 (range, 8 to 430) days. The most common injury site of entry and exit was hand (37.8%) and upper extremity (21.6%) or foot (21.6%). Acute lung injury (2.7%), pleural effusion (21.6%), atelectasis (8.1%) and pneumonia (8.1%) were developed during the admission periods. In recovery phase of these injuries, most spirometric values showed near normal ranges of the percent predicted. CONCLUSION: Through the analysis of 37 electrical injury cases, we could identify that some respiratory complications and pulmonary functions following electrical injury.
Acute Lung Injury ; Body Surface Area ; Burns ; Foot ; Hand ; Humans ; Length of Stay ; Lung ; Male ; Occupations ; Pleural Effusion ; Pneumonia ; Pulmonary Atelectasis ; Reference Values ; Respiratory Function Tests ; Retrospective Studies ; Spirometry ; Survivors ; Upper Extremity

PURPOSE: The aim of this study was to evaluate the behavior of endometrial stromal sarcomas (ESSs) in relation to their clinical and pathogenic features, and to determine the optimal treatment strategy. MATERIALS AND METHODS: A retrospective analysis was performed involving 28 patients with histologic-proven ESSs treated at our institution between 1987 and 2006. RESULTS: The median follow-up was 54.7+/-63.1 months and the 5-year survival rate was 82.0%. Twenty-two (81.5%) and 5 patients (18.5%) had low- and high-grade disease, respectively. Univariate analysis revealed that the histologic grades, based on mitotic count, were associated with longer survival (p=0.004). However, among those patients with low-grade tumors, 5/20 patients (25%) had a recurrence and 2/21 patients (9.5%) had distant metastasis during the follow-up period. With the exception of 2 patients, 26 patients with ESSs underwent hysterectomy as primary treatment. Adjuvant treatment after surgery was administered to 14/26 patients (53.8%). Hormone therapy with progesterone, chemotherapy, and/or radiotherapy did not influence overall survival. However, the postoperative adjuvant therapy group, regardless of the treatment modality, was associated with relatively increased overall survival when compared to the surgery only group (p=0.054). CONCLUSION: The preoperative differential diagnosis of ESSs from other benign gynecologic diseases is often difficult. We recommend adjuvant therapy be administered after hysterectomy in patients with ESS to prevent recurrence or distant metastasis.
Diagnosis, Differential ; Female ; Follow-Up Studies ; Genital Diseases, Female ; Humans ; Hysterectomy ; Neoplasm Metastasis ; Progesterone ; Recurrence ; Retrospective Studies ; Sarcoma ; Sarcoma, Endometrial Stromal ; Survival Rate ; Treatment Outcome