• 제목/요약/키워드: Hemoglobin A1c (HbA1c)

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당뇨병 및 공복혈당장애 예측을 위한 당화혈색소 값 (The Cutoff Value of HbA1c in Predicting Diabetes and Impaired Fasting Glucose)

  • 권세영;나영악
    • 대한임상검사과학회지
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    • 제49권2호
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    • pp.114-120
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    • 2017
  • 증가하고 있는 당뇨병을 예방하기 위한 연구와 함께 당뇨병의 진단 및 예측을 할 수 있는 방법에 대한 연구도 꾸준히 진행되고 있다. 가장 널리 알려져 있는 당화혈색소는 여러 선행 연구에서 그 타당성이 검증되었다. 본 연구에서는 당뇨군 및 공복혈당장애군에 대한 당화혈색소 분별점을 살펴보고, 당뇨군 및 공복혈당장애군 분별을 위한 적절한 임상 적용 기준에 대한 자료를 제시하고 이에 대한 타당성 여부를 평가해 보고자 하였다. 2015 국민건강영양조사 데이터 중 측정치 누락자를 제외한 20세 이상 대상자 5,161명(남성 2,281명, 여성 2,880명)의 자료를 이용하였다. 대상자 전체의 공복혈당과 당화혈색소의 상관계수는 0.79로 나타나 강한 상관성이 입증되었다. 그러나 비당뇨군에서 공복혈당과 당화혈색소의 상관계수는 0.27, 공복혈당장애군에서는 0.39, 당뇨군에서는 0.66으로 나타나 당뇨군에서는 상관성이 높은 반면, 비당뇨군과 공복혈당장애군에서 상관계수는 상대적으로 낮았다. ROC curve를 이용하여 당뇨병을 예측하기 위한 당화혈색소 cutoff값은 남녀 모두 6.05%(sensitivity 84.6%, specificity 92.0%)로 나타났으며, AUC는 0.941 (남성의 경우 0.937, 여성의 경우 0.946)이었다. 반면에 공복혈당장애를 예측하기 위한 당화혈색소 cutoff값은 5.55%(sensitivity 64.5%, specificity 70.0%), AUC는 0.733 (남성의 경우 0.708, 여성의 경우 0.764)으로 나타났다. 이로써 민감도와 특이도 모두 70% 이하로 낮게 나온 공복혈당장애의 경우 진단 기준으로 적용하기에는 무리가 있다. 추후 공복혈당장애 예측을 위한 분별점의 연구에서는 공복혈당범위를 세분화하여 적용하면 좀 더 민감도와 특이도가 높은 분별점을 설정할 수 있을 것으로 보인다.

Osmometry에 의한 Hemoglobin 가수분해도의 신속한 측정 (Rapid Determination of Degree of Hydrolysis for Hemoglobin by Osmometry)

  • 채희정;인만진;김동호;강인규;오남순
    • Applied Biological Chemistry
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    • 제44권3호
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    • pp.143-147
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    • 2001
  • Hemoglobin(Hb) 가수분해도(degree of hydrolysis, DH)를 간편하고 신속하게 측정하고자 보편적으로 이용되는 TNBS법(trinitrobenzene sulfonic acid method)에 의한 가수분해도와 osmometer를 이용한 방법의 상관관계를 효소반응 조건에 따라 조사하였다. 다양한 ph 범위$(pH\;7.5{\sim}10.0)$에서 DH에 대한 두 방법의 상관계수($R^2$값)는 $0.974{\sim}0.991$로 매우 높은 값을 보였으며, 각각 측정한 DH 사이의 비율($DH_{OSM}/DH_{TNBS}$$1.438{\sim}1.656$의 범위에 있었다. Hb을 가수분해하여 heme-iron을 얻기 위한 특정 반응조건인 pH 7.5, $50^{\circ}C$에서 Esperase와 Fla-vourzyme을 각각 사용한 경우와 Esperase와 Flavourzyme을 혼용한 경우에서도 두 방법간의 DH 비율은 효소의 종류 및 처리방법에 무관하게 1.658을 나타내어 Esperase만을 사용한 경우와 매우 유사하였고 두 방법간의 상관계수는 0.982이었다. 따라서, 두 방법간의 상관관계식으로부터 osmometer를 이용한 Hb의 가수분해도를 간편하고 신속하게 측정할 수 있었다.

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제2형 당뇨병 환자에서 시타글립틴과 메트포민 고정 복합제 투여와 단일제 병용간의 복약 순응도, 효과 및 약가에 대한 비교 연구 (Comparisons of Adherence, Efficacy and Price between Sitagliptin/Metformin Fixed-dose Combination Tablets and Concomitant Administration of Sitagliptin and Metformin in Type 2 Diabetes Mellitus Patients)

  • 박지혜;이병구;김재연;곽혜선
    • 한국임상약학회지
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    • 제24권3호
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    • pp.193-198
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    • 2014
  • Objective: This study was conducted to compare the adherence, clinical and economical utility of fixed-dose combination tablets of sitagliptin/metformin with concomitant administration of sitagliptin and metformin in patients with type 2 diabetes mellitus. Methods: Adherence was measured as the medication possession ratio (MPR) of ${\geq}80%$, and MPR was calculated as the number of total prescription days divided by the total treatment period. Hemoglobin $A_{1C}$ ($HbA_{1c}$) differences between baseline and predetermined periods were analyzed. Proportions of patients who achieved $HbA_{1c}$ less than 6.5% for three or more consecutive times were compared. To evaluate cost-effectiveness, prices of sitagliptin, metformin and sitagliptin/metformin tablets were investigated. Results: More than 90% of patients showed adherence in both groups (92.0% in fixed-dose combination group vs 95.9% in concomitant administration group), and there was no statistically significant difference (P = 0.113). Proportion of patients with HbA1c less than 6.5% for three or more consecutive times tended to be somewhat higher in fixed dose combination group than in concomitant administration group without a statistically significant difference (32.6% vs. 28.0%, P = 0.344). Total price of metformin and sitagliptin was cheaper up to 222 KRW in the case of fixed-dose combination tablets compared to the case of concomitant administration. Conclusion: The sitagliptin/metformin fixed-dose combination tablet had a similar patient adherence and was not significantly different in efficacy to the concomitant administration of each component. In terms of drug prices, fixed-dose combination tablets were cheaper than concomitant administration of each tablet.

타입 1형 당뇨 환자에서 급작스런 혈당조절에 의해 발생한 신경염 (Treatment-Induced Neuropathy of Diabetes)

  • 김기훈;임민정;이태임;김주섭;윤서연
    • Clinical Pain
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    • 제19권1호
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    • pp.32-35
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    • 2020
  • Treatment-induced neuropathy in diabetes (TIND) is a reversible neuropathy that occurs in patients with diabetes, usually after a fast improvement in glycemic control. TIND is defined as the sudden onset of neuropathic pain or autonomic dysfunction with a large improvement in glycemic control (glycated hemoglobin [HbA1c] level of ≥ 2% over 3 months). We report the first case of a 24-year-old woman with type 1 diabetes mellitus who developed TIND in Korea. Her HbA1c level had decreased from 16.7% to 7.3% within a 3-month period. She developed acute-onset, severe, and continuous burning pain affecting her back and lower extremities. She was administered tapentadol (50 mg), pregabalin (75 mg), and vitamin B with minerals twice daily for neuropathic pain. She complained of orthostatic hypotension; thus, midodrine (2.5 mg) and anti-embolic stockings were prescribed. She almost completely recovered 6 months after the onset. A physician should be aware of TIND and gradually reduce HbA1c levels to prevent the occurrence of TIDN. They must also try to provide relief from severe pain or autonomic dysfunction and emphasize on an almost complete recovery.

Long-limb Roux-en-Y Reconstruction after Subtotal Gastrectomy to Treat Severe Diabetic Gastroparesis

  • Park, Joong-Min;Kim, Jong Won;Chi, Kyong-Choun
    • Journal of Gastric Cancer
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    • 제19권3호
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    • pp.365-371
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    • 2019
  • The role of surgical intervention in patients with diabetic gastroparesis is unclear. We report a case of a 37-year-old man with a history of recurrent episodes of vomiting and long-standing type 2 diabetes mellitus. Esophagogastroduodenoscopy did not reveal any findings of reflux esophagitis or obstructive lesions. A gastric emptying time scan showed prolonged gastric emptying half-time (344 minutes) indicating delayed gastric emptying. Laboratory tests revealed elevated fasting serum glucose and glycosylated hemoglobin (HbA1c, 12.9%) and normal fasting C-peptide and insulin levels. We performed Roux-en-Y reconstruction after subtotal gastrectomy to treat gastroparesis and improve glycemic control, and the patient showed complete resolution of gastrointestinal symptoms postoperatively. Barium swallow test and gastric emptying time scan performed at follow-up revealed regular progression of barium and normal gastric emptying. Three months postoperatively, his fasting serum glucose level was within normal limits without the administration of insulin or oral antidiabetic drugs with a reduced HbA1c level (6.9%). Long-limb Roux-en-Y reconstruction after subtotal gastrectomy may be useful to treat severe diabetic gastroparesis by improving gastric emptying and glycemic control.

Serum albumin levels and their correlates among individuals with motor disorders at five institutions in Japan

  • Ohwada, Hiroko;Nakayama, Takeo;Kanaya, Yuki;Tanaka, Yuki
    • Nutrition Research and Practice
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    • 제11권1호
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    • pp.57-63
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    • 2017
  • BACKGROUND/OBJECTIVES: The level of serum albumin is an index of nourishment care and management. However, the distribution and correlates of serum albumin levels among individuals with motor disorders have not been reported until now. Therefore, we examined the distribution and correlates of serum albumin levels among individuals with motor disorders. SUBJECTS/METHODS: A cross-sectional study on 249 individuals with motor disabilities (144 men, mean age: 51.4 years; 105 women, mean age: 51.4 years) was conducted at five institutions in Ibaraki Prefecture, Japan in 2008. The results were compared with data from the National Health and Nutrition Survey. RESULTS: The mean serum albumin levels were $4.0{\pm}0.4g/dL$ for men and $3.8{\pm}0.5g/dL$ for women. Overall, 17 (11.8%) men and 25 (23.8%) women had hypoalbuminemia (serum albumin level ${\leq}3.5g/dL$); these proportions were greater than those among healthy Japanese adults (${\leq}1%$). Low serum albumin level was related with female sex, older age, low calf circumference, low relative daily energy intake, low hemoglobin (Hb), low blood platelet count, low high-density lipoprotein cholesterol (HDL-C), low $HbA_{1c}$, and high C-reactive protein (CRP) levels. The strongest correlates, based on standardized betas, were Hb (0.321), CRP (-0.279), and HDL-C (0.279) levels. CONCLUSIONS: These results indicate that the prevalence of hypoalbuminemia is higher in individuals with motor disabilities than in healthy individuals and that inflammation is a strong negative correlate of serum albumin levels. Therefore, inflammation should be examined for the assessment of hypoalbuminemia among institutionalized individuals with motor disabilities.

Comparative Review of the Correlation Between Electroneurography, Electromyography, Hematology Tests, or the Heart Rate Variability Test, with an Improvement in the Severity of Bell's Palsy Symptoms

  • Hwang, Ji-Min;Kim, Jun-Yeon;Kim, Ha-Na;Park, Kyeong-Ju;Jo, Min-Gi;Jang, Jun-Yeong;Nam, Sang-Soo;Goo, Bon Hyuk;Kim, Jung-Hyun;Ko, Min Jung;Chae, Sang Yeup;Park, Young Jae
    • Journal of Acupuncture Research
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    • 제38권3호
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    • pp.192-199
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    • 2021
  • Background: In this retrospective study, we aimed to determine which diagnostic tests were associated with an improvement in Bell's palsy symptoms. Methods: There were 30 patients who visited Kyung Hee University Korean Medicine Hospital from April 1, 2017 to February 29, 2020, and who received East-West collaboration treatment for Bell's palsy. The tests included electroneurography (ENoG), electromyography (EMG), hematology, and heart rate variability (HRV) results which were used to determine if any test correlated with improvement of Bell's palsy symptoms. Results: The initial severity of symptoms did not correlate with the tests performed, with the exception of mean corpuscular hemoglobin concentration (p = 0.013). For both ENoG for oculi degeneration and mean EMG tests, the rate of nerve degeneration showed a significant negative correlation with the improvement of Bell's palsy symptoms. Amongst the HRV test indicators, the square root of the mean of the sum of the squares of differences between the adjacent normal R-R wave interval, the standard deviation of intervals, total power, very low frequency, and high frequency of the wave was negatively correlated with improvement of Bell's palsy symptoms. Similarly, glycosylated hemoglobin Type A1c (HbA1c) and erythrocyte sedimentation rate (ESR) showed a negative correlation with improvement of symptoms of Bell's palsy. With the exception of HbA1c and ESR, the remaining hematology test results showed no significant difference when comparing before and after treatment. Conclusion: ENoG, EMG, HRV test, HbA1c, and ESR negatively correlated with improvements in Bell's palsy symptoms and may determine the prognosis of Bell's palsy.

Motor and Somato Sensory Evoked Potentials During Intraoperative Surveillance Testing in Patients with Diabetes

  • Lee, Kyuhyun;Kim, Jaekyung
    • International journal of advanced smart convergence
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    • 제9권1호
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    • pp.37-46
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    • 2020
  • Cerebral vascular surgery can damage patients' motor and sensory nerves; therefore, neuromonitoring is performed intraoperatively. Patients with diabetes often have peripheral neuropathy and may be prone to nerve damage during surgery. This study aimed to identify factors that should be considered when diabetic patients undergo intraoperative neuromonitoring during brain vascular surgery and to present new criteria. Methods: In patients with and without diabetes who underwent cerebrovascular surgery (n = 30/group), we compared the intraoperative stimulation intensity, postoperative motor power and sensory, glycated hemoglobin (HbA1c) and glucose levels, and imaging findings. Results: Fasting glucose, blood glucose, and HbA1c levels were 10%, 12.1%, and 9.7%, respectively; they were higher in patients with than in patients without diabetes. Two patients with diabetes had weakness, and 10 required increased Somato sensory evoked potential (SSEP) stimulation, while in 16, motor power recovered over time rather than immediately. The non-diabetic group had no weakness after surgery, but 10 patients required more increased SSEP stimulation. The diabetic group showed significantly more abnormal test results than the non-diabetic group. Conclusion: For patients with diabetes undergoing surgery with intraoperative neuromonitoring, whether diabetic peripheral neuropathy is present, their blood glucose level and the anesthetic used should be considered.

노인 당뇨환자에서 혈당조절에 따른 식사의 질과 당뇨자가관리상태 (Dietary Quality and Self-Management Status according to the Glycemic Control in the Elderly with Type 2 Diabetes)

  • 박수진;우미혜;조여원
    • 한국식품영양학회지
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    • 제21권4호
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    • pp.530-535
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    • 2008
  • Evidence for the effects of different health behaviors, including diet, in elderly diabetes is currently limited. The aim of this study was to compare the quality of diet and health behaviors in Korean elderly T2DM patients, using a glycemic control. T2DM elders(>65 yr, n=48) were recruited and categorized by the concentration of glycated-hemoglobin HbA1c; subjects with HbA1c<7% were the good control(GC) group, and subjects with $HbA1c{\geq}8%$ constituted the poor control(PC) group. General characteristics, self-management behavior questionnaires, and 3-d diet records were all collected and assessed. No significant differences in general characteristics between GC and PC were detected, with the exception of a higher level of education in GC(p<0.05). A twofold longer duration of diabetes was observed in PC as compared to GC(p<0.01). The GC group did exercise for a longer time(p<0.001), and had an earlier beginning of diabetes self-management education (DSME) by healthcare practitioners using a team teach as compared with the PC group(p<0.05). The total dietary quality index(p<0.001) and individual index for carbohydrate(p<0.001) or vegetables and fruit(p<0.05) were better in GC than in PC. Therefore, the earlier DSME including intensive exercise and balanced diet selection should be expected to improve glycemic control in diabetic Korean elders.

제2형 당뇨병 환자를 위한 인슐린치료이행증진 프로그램의 효과: 무작위대조군실험설계 (Effects of the Insulin Therapy Adherence Program for Patients with Type 2 Diabetes: A Randomized Controlled Trial)

  • 박경민;손정태
    • 임상간호연구
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    • 제28권3호
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    • pp.277-288
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    • 2022
  • Purpose: This study was conducted to evaluate the effects of the insulin therapy adherence program (INSTA GRAM) for patients with type 2 diabetes mellitus. Methods: This study examined a total of 63 patients with type 2 diabetes for whom the initiation of insulin therapy is being considered or within 6 months of undergoing insulin therapy. INSTAGRAM is a stage-specific intervention consisting of strategies for motivating patients to initiate and maintain insulin therapy using the transtheoretical model on the stages of change, the process of change, and self-efficacy. The participants were randomly assigned to either the INSTAGRAM group (experimental group, n=32) or the standard diabetes education group (control group, n=31). The INSTAGRAM group received 6 sessions over 8 weeks(face-to-face education was conducted in the first and last sessions, and telephone coaching was conducted from the second to fifth sessions). The outcomes were measured by psychological insulin resistance, self-efficacy, and glycosylated hemoglobin (HbA1c). Results: Psychological insulin resistance (p<.001), self-efficacy (p<.001), and HbA1c (p=.024) of the participants in the INSTAGRAM group significantly improved compared to those in the control group. Conclusion: INSTAGRAM is effective in overcoming psychological insulin resistance and improving self-efficacy and HbA1c. Therefore, the INSTAGRAM can be recommended as a nursing intervention for type 2 diabetic patients who delay the initiation of insulin therapy.