BNT162b2 mRNA COVID-19 vaccine adverse reactions needing medical support: a vaccine center experience

Objective@#The coronavirus disease 2019 (COVID-19) pandemic has not yet been controlled and herd immunity through vaccination against COVID-19 has been considered the best option to prevent the spread of COVID-19 worldwide. We encountered several patients in our emergency department presenting with adverse reactions after COVID-19 vaccinations. Hence, we investigated the clinical characteristics of patients with adverse reactions after vaccination. @*Methods@#In South Korea, 10,510 doses of the BNT162b2 mRNA COVID-19 vaccine was administered to 5,304 medical staff. To investigate adverse reactions, we reviewed the case report forms from the vaccination centers and the medical charts from the date of first dose administration until two weeks after the last planned second dose. @*Results@#A total of 187 cases, out of the 10,510, experienced adverse reactions and these were more common in females. Dizziness (44.4%), nausea and vomiting (28.3%), and fever (24.1%) were the most reported adverse reactions. Immediate adverse reactions included dizziness, nausea, and vomiting, palpitation, sensory changes, and delayed adverse reactions included fever, myalgia, headache, nausea, and vomiting. The delayed reactions of fever and myalgia were significantly more common after the second, rather than after the first dose (P<0.01 and P=0.03, respectively). One case of anaphylaxis was reported. All adverse reactions improved after conservative care. @*Conclusion@#Our findings show diverse adverse reactions to the BNT162b2 mRNA COVID-19 vaccine, but none of them required hospitalization. However, since this vaccine has been manufactured using a newly developed technique, more research focused on the clinical significance of the adverse reactions is necessary.

A Tuberculosis Contact Investigation on Health Care Workers in One Hospital

PURPOSE: This study aimed to describe the results of a contact investigation on health care workers after exposure to a house officer with smear-positive pulmonary tuberculosis (TB). METHODS: Eighty nine out of 101 subjects who had close contact with the index patient agreed to be enrolled in the investigation. The first contact investigation was conducted approximately 30 days after the index patient's onset of symptoms, followed by the second investigation after 10 weeks. In both, clinical manifestations were studied, and chest X-ray and tuberculin skin test (TST)/QuantiFERON-TB Gold (QFT-G) in dual screening strategy were conducted. RESULTS: The first TST resulted in positive in 34 subjects (38.2%). QFT-G was conducted on 16 subjects who tested positive in the first TST and aged under 36. Six of them (37.5%) were positive. The second TST was conducted on 41 subjects with negative results in the first TST. Seventeen (41.5%) were positive and among them, three (17.6%) showed positive QFT-G. None of the subjects were diagnosed with active TB. The probability of TB infection through contact with the index patient was 7.3% (3/41) in dual screening strategy while it was 41.5% (17/41) in TST strategy. CONCLUSIONS: This first hospital-setting contact investigation for tuberculosis in Korea revealed that latent tuberculosis infection (LTBI) rates vary depending on different diagnostic strategies. This indicates the need for systematic guidelines for diagnosing LTBI in health care workers who have professional exposure to TB.

A Case of Tracheal Hamartoma Treated with Endoscopic Mucosal Resection / 계명의대학술지

A 77-year-old male patient was hospitalized due to dyspnea and cough. At chest auscultation, Rhonchi was heard from both lung fields. The chest computed tomography (CT) observed nodular lesions within mid-trachea. Bronchoscope observed salient mass from the membranous portion in the mid-trachea, and after taking a biopsy, it was diagnosed as hamartoma. Tracheal hamartoma is a rare benign tumor of lung. Similar way to the endoscopic mucosal resection (EMR), we did endoscopic resection of tracheal hamartoma. We report a case of tracheal hamartoma treated with Endoscopic mucosal resection via flexible bronchoscopy.

Reference Equations for the Six-Minute Walk Distance in Healthy Korean Adults, Aged 22-59 Years / 결핵및호흡기질환

BACKGROUND: The six-minute walk test has been widely used in people with chronic cardiopulmonary disorders as an outcome assessment with regards to therapeutic or prognostic determinants. This study was undertaken to determine the six-minute walk distance (6MWD) in a sample of healthy Koreans and to create a reference equation. We also compared the 6MWD of our cohort with previously published equations. METHODS: Two hundred fifty-nine healthy subjects (95 males) aged 22-59 years performed two walking tests using a standardized protocol. 6MWD was defined as the greatest distance achieved from the two tests. The effect of anthropometrics on the 6MWD was also investigated. RESULTS: The average 6MWD was 598.5+/-57.92 m, with significantly longer distances by males (628.9+/-59.51 m) than females (580.9+/-47.80 m) (p<0.001). Age, height, weight, and body mass index were significantly correlated with 6MWD in univariate analysis. Stepwise multiple regression showed height to be single independent predictor of 6MWD (r2=0.205, p<0.001). The reference equations derived in Caucasian and North African populations tend to overestimate the distance walked by Korean subjects, while Asian equations underestimate it. CONCLUSION: The average 6MWD in these Korean populations was 600 m. The regression equation revealed that individual's height was the most significant predictor of distance, explaining 20.5% of the distance variance.

Relationship between bronchial anthracofibrosis and endobronchial tuberculosis

BACKGROUND/AIMS: Various pulmonary diseases may be associated with bronchial anthracofibrosis (BAF). Our aim was to identify a relationship between BAF and endobronchial tuberculosis (EBTB). METHODS: In total, 156 patients, diagnosed with EBTB using bronchoscopy, between June 1999 and May 2008, were included. Clinical and bronchoscopic findings between patients with BAF (n = 72, BAF group) and without BAF (n = 84, non-BAF) were analyzed retrospectively. RESULTS: The crude odds ratio (OR) of BAF for EBTB was 8.88 (95% confidence interval, 6.37 to 12.37). On multivariate analysis, adjusting for age, history of biomass smoke exposure, and comorbidities, the most significant independent factor for EBTB was a history of biomass smoke exposure (adjusted OR, 17.471; adjusted p < 0.001). EBTB was more frequent in the right lung, particularly the right middle lobar bronchus, in the BAF group. Actively caseating, edematous-hyperemic, and ulcerative were the major types, with 77 (49%), 33 (21%), and 31 cases (20%), respectively. The BAF group had more ulcerative type, while the non-BAF group had more actively caseating type. The duration of EBTB treatment was similar between the groups. No significant difference was observed in the development of complications during treatment and posttreatment bronchostenosis between the groups. CONCLUSIONS: These findings suggest that BAF may be a risk factor for EBTB and affect the location and morphological type at the time of EBTB development.

Patient's Perception of Symptoms Related to Morning Activity in Chronic Obstructive Pulmonary Disease: The SYMBOL Study

BACKGROUND/AIMS: Patients with chronic obstructive pulmonary disease (COPD) experience more problematic respiratory symptoms and have more trouble performing daily activities in the morning. The aim of this study was to assess the perception of COPD symptoms related to morning activities in patients with severe airflow limitation. METHODS: Data of 133 patients with severe airflow limitation were analyzed in a prospective, non-interventional study. A clinical symptom questionnaire was completed by patients at baseline. In patients having morning symptoms, defined by at least one or more prominent or aggravating symptom during morning activities, a morning activity questionnaire was also completed at baseline and following 2 months of COPD treatment. RESULTS: The most frequently reported COPD symptom was breathlessness (90.8%). Morning symptoms were reported in 76 (57%) patients; these had more frequent and severe clinical COPD symptoms. The most frequently reported morning activity was getting out of bed (82.9%). The long acting muscarinic antagonist (odds ratio [OR], 6.971; 95% confidence interval [CI], 1.317 to 11.905) and chest tightness (OR, 0.075; 95% CI, 0.011 to 0.518) were identified as significantly related to absence of morning symptoms. There was no significant correlation between the degree of forced expiratory volume in 1 second improvement and severity score differences of all items of morning activity after 2-month treatment. CONCLUSIONS: Fifty-seven percent of COPD patients with severe airflow limitation have morning symptoms that limit their morning activities. These patients also have more prevalent and severe COPD symptoms. The results of this study therefore provide valuable information for the development of patient-reported outcomes in COPD.

Erratum: Author's Name Correction / 결핵및호흡기질환

No abstract available.

A Case of Pulmonary and Endobronchial Mycobacterium avium Infection Presenting as an Acute Pneumonia in an Immunocompetent Patient / 결핵및호흡기질환

The global number of Mycobacterium avium complex (MAC) pulmonary infection is increasing. Patients with preexisting lung disease or who are immunodeficient are at the greatest risk for developing MAC infection. Endobronchial lesions with MAC infection are rare in the immunocompetent host. However, there have been an increasing number of reports of an immunocompetent host being afflicted with various manifestations of MAC infection. We report a case of pulmonary and endobronchial MAC infection presenting as an acute pneumonia in a 59-year-old female without preexisting lung disease or immunodeficiency.

Usefulness of Serum Cortisol in Assessment for the Severity of Community-Acquired Pneumonia / 결핵및호흡기질환

BACKGROUND: High cortisol levels are frequently observed in patients with severe infections are of prognostic value in sepsis. The aim of this study was to evaluate the clinical usefulness of serum cortisol in assessment for the severity of community-acquired pneumonia (CAP). METHODS: This study analyzed the results of 52 CAP subjects admitted in Changwon Fatima Hospital between July 2008 to May 2010. Total serum cortisol, infection markers such as C-reactive protein (CRP), procalcitonin (PCT) and CURB (Confusion, Uremia, Respiratory rate, Blood pressure)-65 were examined retrospectively. RESULTS: In clinically unstable subjects on admission day 4, baseline serum cortisol, CURB-65, and CRP were elevated significantly compared to those of stable subjects. Area under curve (AUC) of cortisol, CRP, and CURB-65 from ROC curves were 0.847, 0.783, and 0.724 respectively. In the subjects with serum cortisol > or =22.82 microg/dL, CRP, PCT, CURB-65 score, and mortality were significantly elevated. CONCLUSION: These findings suggest that measurement of serum cortisol in early stage may provide helpful information in the assessment of CAP severity.

Diet and Airway Obstruction: A Cross Sectional Study from the Second Korean National Health and Nutrition Examination Survey

BACKGROUND/AIMS: Several dietary factors, such as antioxidant vitamins, have potential roles in the development of obstructive lung diseases. However, the results of studies on the relationships between dietary factors and obstructive lung diseases are inconsistent. The aim of this study was to determine which nutrients are related to airway obstruction (AO) in the Korean population. METHODS: We used data obtained as part of the Korean National Health and Nutrition Examination Survey (NHANES II) in 2001. Analysis was restricted to 1,005 adults who were 18 years of age and older, who had two or more acceptable spirometry curves, and who had participated in the nutrition examination survey. AO was defined as the ratio of forced expiratory volume in one second (FEV1) to forced vital capacity (FVC) of less than 0.7. RESULTS: Of the 1,005 study subjects, 78 (7.8%) had AO. Statistically significant factors associated with AO were 55 years of age or older (p = 0.032), central obesity (p = 0.047), hypertension (p < 0.001), smoking of 20 pack-years or more (p < 0.001), low income (p < 0.001), and low dietary protein intake expressed as a ratio of protein to recommended dietary allowance for Koreans (p = 0.037). Multiple logistic regression analyses revealed four factors that were independently associated with AO: smoking of 20 pack-years or more (odds ratio [OR], 5.801; p < 0.001), hypertension (OR, 3.905; p < 0.001), low protein intake (OR, 0.992; p = 0.004), and low income (OR, 1.962; p = 0.018). CONCLUSIONS: In the Korean NHANES, smoking, hypertension, and low income were related to AO. Among dietary factors, only low protein intake was associated with AO.

Prevalence and Characterization of Plasmid-Medicated Quinolone Resistance Genes among Clinical Isolates of Extended-Spectrum Cephalosporin Resistant Enterobacter cloacae / 감염과화학요법

BACKGROUND: Extended-spectrum cephalosporins (ESCs)-resistant Enterobacter cloacae is one of the pathogens of nosocomial infection the incidence of which is on the rise. Moreover, plasmid-mediated quinolone resistance genes (PMQR genes) that reduce quinolone sensitivity have been shown to be widely distributed among clinical isolates of Enterobacteriaceae. This study was carried out to observe the distribution of PMQR genes in clinical isolates of E. cloacae resistant to ESCs. MATERIALS AND METHODS: Fourty-three ESCs-resistant E. cloacae strains from the blood collected during the span of 7 years, from 1994 to 2001, at Seoul National University Children's Hospital (SNUCH) were included in this study. Isoelectric focusing and enzyme specific PCR were performed to characterize beta-lactamase. The presence of qnrA, qnrB, qnrC, qnrS, qepA, and aac(6')-Ib-cr was determined by PCR, restriction enzyme analyses of PCR products, and DNA sequencing. Minimal inhibitory concentration (MIC) of several quinolones was measured by agar dilution method. RESULTS: The PMQR genes were detected in 9 (21%) of 43 ESCs-resistant E. cloacae isolates. Among them, five isolates were positive for qnrB2, and each two isolates harbored qnrB4 or qnrB5, respectively. qnrA, qnrC, qnrS or qepA was not identified. aac(6')-Ib was detected in 27 isolates, but aac(6')-Ib-cr was not found. Among the 9 qnrB-positive isolates, 5 produced SHV-12, 3 were derepressed mutants, and 1 produced pI 7.5 beta-lactamase. MIC ranges and percent resistances of nalidixic acid, ofloxacin, levofloxacin, and moxifloxacin for the PMQR genes-positive isolates were higher than PMQR genes-negative isolates. CONCLUSION: In this study, ESCs-resistant E. cloacae showed a high prevalence of PMQR genes, and qnrB was the only PMQR gene identified.

Prevalence and Characterization of Plasmid-Medicated Quinolone Resistance Genes among Clinical Isolates of Extended-Spectrum Cephalosporin Resistant Enterobacter cloacae / 감염과화학요법

BACKGROUND: Extended-spectrum cephalosporins (ESCs)-resistant Enterobacter cloacae is one of the pathogens of nosocomial infection the incidence of which is on the rise. Moreover, plasmid-mediated quinolone resistance genes (PMQR genes) that reduce quinolone sensitivity have been shown to be widely distributed among clinical isolates of Enterobacteriaceae. This study was carried out to observe the distribution of PMQR genes in clinical isolates of E. cloacae resistant to ESCs. MATERIALS AND METHODS: Fourty-three ESCs-resistant E. cloacae strains from the blood collected during the span of 7 years, from 1994 to 2001, at Seoul National University Children's Hospital (SNUCH) were included in this study. Isoelectric focusing and enzyme specific PCR were performed to characterize beta-lactamase. The presence of qnrA, qnrB, qnrC, qnrS, qepA, and aac(6')-Ib-cr was determined by PCR, restriction enzyme analyses of PCR products, and DNA sequencing. Minimal inhibitory concentration (MIC) of several quinolones was measured by agar dilution method. RESULTS: The PMQR genes were detected in 9 (21%) of 43 ESCs-resistant E. cloacae isolates. Among them, five isolates were positive for qnrB2, and each two isolates harbored qnrB4 or qnrB5, respectively. qnrA, qnrC, qnrS or qepA was not identified. aac(6')-Ib was detected in 27 isolates, but aac(6')-Ib-cr was not found. Among the 9 qnrB-positive isolates, 5 produced SHV-12, 3 were derepressed mutants, and 1 produced pI 7.5 beta-lactamase. MIC ranges and percent resistances of nalidixic acid, ofloxacin, levofloxacin, and moxifloxacin for the PMQR genes-positive isolates were higher than PMQR genes-negative isolates. CONCLUSION: In this study, ESCs-resistant E. cloacae showed a high prevalence of PMQR genes, and qnrB was the only PMQR gene identified.

Recovery Rate of Nontuberculous Mycobacteria and the Clinical Course of Nontuberculous Mycobacterial Pulmonary Disease at a Secondary Hospital / 결핵및호흡기질환

BACKGROUND: To examine the recovery rate of nontuberculous mycobacteria (NTM) from respiratory specimens and the clinical course of NTM pulmonary disease at a 700-bed secondary hospital. METHODS: This study analyzed the results of 843 acid-fast bacilli (AFB) culture-positive respiratory specimens from 650 subjects collected between May 2003 and April 2008. In addition, the clinical course of NTM pulmonary disease, diagnosed using criteria established by the American Thoracic Society, was examined. RESULTS: There were 67 (7.9%) NTM isolates recovered from 52 (8.0%) subjects. Among the 535 AFB smear-positive specimens, 34 (6.3%) NTM isolates were recovered. There were 33 (10.7%) NTM isolates were recovered from 308 AFB smear-negative specimens. Of 52 subjects with isolated NTM, M. intracellulare was the most common species at 73.1% (n=33), followed by M. kansassi (n=7), M. abscessus (n=2), M. fortuitum (n=2), and M. avium (n=1). Sixteen (30.8%) patients had NTM pulmonary disease and the most common causative organism was M. intracellulare (n=14, 87.5%). Of these, 6 cases attained negative conversion in culture, 4 cases failed to attain negative conversion because of poor cooperation or expiration from complicated underlying lung disease, and 5 cases were transferred to a higher-grade hospital. CONCLUSION: The recovery rate of NTM from respiratory specimens was relatively low and the most common species was M. intracellulare. Patients with NTM pulmonary disease showed variable clinical outcomes.

Mutation of the N-ras Gene in a Patient Suffering from the Blast Phase of Chronic Myelogenous Leukemia

The blast phase in chronic myelogenous leukemia (CML) is associated with mutation of several genes. It is well known that p53 gene mutation plays a key role in the myeloid or lymphoid blast phase of CML. But for the case of the N-ras gene, the association between N-ras mutations and the blast phase of CML is not yet known. We report here on a case of detecting N-ras point mutation without p53 mutation in a 64 year-old man who suffered from the lymphoblastic blast phase of CML.

A Case of Kikuchi Fujimoto's Disease Accompanied by Hemophagocytic Lymphohistiocytosis

Kikuchi's disease and hemophagocytic lymphohistiocytosis (HLH) present different clinical characteristics, especially in prognosis, although both diseases have the clinical similarity in initial presentations. Kikuchi's disease usually has a self-limiting clinical course, but HLH can be fatal. Accordingly, it is important that the differential diagnoses and decision as to initial treatment be made as soon as possible, at the time of clinical presentation. In the case of Kikuchi's disease accompanied with HLH, the decision concerning initial treatment can be very difficult, because these cases have been rarely reported and the prognosis is unpredictable. We report a case of a 21-year-old female diagnosed with Kikuchi's disease accompanied with HLH. Treatment involved steroid therapy, as for treatment of HLH. Recovery was complete. Kikuchi's disease with HLH can be completely treated with more aggressive therapy than used for Kikuchi's disease alone.

Propofol-Remifentanil Anesthesia under Somatosensory Evoked Potential Monitoring: 15 Cases : Case reports

Somatosensory evoked potential (SSEP) monitoring has been used to minimize neurologic morbidity during spine surgery. SSEP monitoring may be affected by technical factor including operation, physiological factor associated with patient and anesthetics used to induce and maintain general anesthesia. Several clinical studies have shown that inhaled anesthetics more decrease the amplitude of SSEP than a narcotic based general anesthesia. We have experienced 15 patients who received spine surgery under balanced anesthesia with propofol, remifentanil and 50% N2O, which is supposed to be another useful anesthesia technique for spine surgery under SSEP monitoring.

A case of spinal myoclonus with radiculopathy following spine surgery: A case report / 대한마취과학회지

Despite adequate surgery, a number of patients have a return of back pain and radiculopathy of the legs following their operation. We present here a case of spinal myoclonus with radiculopathy after spine surgery. A 51 year old woman with bilateral radiculopathy and urinary incontinence was diagnosed with a cauda equina syndrome along with spinal stenosis. The patient underwent emergency operation for posterior decompression and internal fixation from the L2 to S1 levels. Immediately after surgery, the patient continued to experience intermittent myoclonic movement with severe shooting pain in her legs despite being given pharmacological treatments such as benzodiazepines, opioids, NSAIDs and gabapentin. The patient was found to have sudden, brief, bilateral involuntary muscle contraction on the lower extremities. The patient was referred to our pain clinic. She underwent a caudal block 2 times in 4 days. However, she reported only limited pain relief for 3 to 4 hours. She was then prescribed phenytoin 300 mg intravenously in a day; her myoclonic movement gradually subsided after 1 week of receiving phenytoin. Sixty days later, she was discharged without any long term sequelae.

The Effectiveness of Sequential Intravenous Saline and Oral Water Loading Tests and Barsoum-Levine Formula for Managing Hyponatremic Patients: 2 Case Reports / 대한신장학회지

In hyponatremic patients, the assessment of extracellular fluid volume plays an essential step in diagnosing the etiology of hyponatremia and deciding how to manage it. Although various laboratory tests and diagnostic procedures have been developed for differential diagnosis of hyponatremia, there still are limits to the evaluation of the status of extracellular fluid volume due to the data that overlaps each other, leading to the difficulty in diagnosing between euvolemia and hypovolemia. Also, there is no consensus about how to guide the type and amount of fluid therapy despite many formulas including Adrogue-Madias and Barsoum-Levine formulas have been suggested. Hereby, we are reporting two hyponatremic patients (102 and 105 mEq/L) admitted simultaneously with indistinct volume status on initial clinical and laboratory examinations, but were clarified as euvolemic hyponatremia (syndrome of inappropriate antidiuretic hormone secretion) in one and hypovolemic hyponatremia in the other case after sequential intravenous saline (2 L over 24 hrs) and oral water (20 mL/kg) loading tests. When serum sodium values calculated by the above-mentioned two formulas were compared with actually measured ones during saline loading test in these cases, the Barsoum-Levine formula revealed almost no discrepancy between both the values while the Adrogue-Madias formula underestimated the measured value.

The Analgesic Efficacy of a 5% Eutectic Mixture of Lidocaine and Prilocaine Prior to Insertion of Spinal and Epidural Block / 대한마취과학회지

BACKGROUND: We evaluated the analgesic efficacy of a 5% eutectic mixture of lidocaine and prilocaine (EMLA(R)) topically applied before performing skin puncture for spinal or epidural anesthesia. METHODS: The patient population consisted of 75 ASA physical status 1 and 2 adults scheduled for operations of the lower abdominal region, the perineal region or the lower extremities. The patients were randomly allocated to one of five groups of equal size: group A - topical application of EMLA(R) cream 120 min before spinal block; group B - subcutaneous infiltrationof 2 ml of 2% lidocaine immediately before spinal block; group C - no pretreatment before spinal block; group D - topical application of EMLA(R) cream 120 min before epidural block; and group E - subcutaneous infiltration of 2 ml of 2% lidocaine immediatelybefore epidural block. Pain experienced during the whole procedure was rated using a 10 cm visual analogue scale. RESULTS: Patients in group A experienced less pain compared with those in groups B and C (2.0 +/- 1.9 cm vs 4.1 +/- 1.9 cm and 3.9 +/- 2.2 cm, respectively; P < 0.05). However there was no significant difference between group D and group E (3.6 +/- 2.4 cm vs 4.1 +/- 2.5 cm). The patients in group A and group D were highly satisfied with the method of analgesia (P < 0.05). CONCLUSIONS: EMLA(R) cream is an effective alternative to subcutaneous infiltration of local anesthetic for analgesia during skin puncture using a 25 G spinal needle. It provides insufficient analgesia however for epidural anesthesia.

A Case of Exogenous Lipoid Pneumonia after Ingestion of Squalene in Patients with Achalasia / 결핵및호흡기질환

Exogenous lipoid pneumonia (ELP) is a chronic inflammatory reaction of the lungs resulting from the aspiration of vegetable, animal or mineral oils. Squalene, is a derivative of shark liver oil that is taken as a traditional remedy in some Asian countries, and is used widely also in cosmetics. Similar to the symptoms in most cases of oil aspiration, the symptoms of squalene-induced lipoid pneumonia are either absent or nonspecific. Hence, the disease is generally detected incidentally. Although many cases with predisposing factors have been reported, ELP with achalasia is quite rare. We report a 47-year old woman with achalasia who developed ELP after ingesting squalene. The patient was treated successfully by supportive care and surgical treatment of the achalasia.