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Retinopathy 视网膜病变
Pub Date : 2021-07-01 DOI: 10.1093/med/9780198870197.003.0276
P. Scanlon
Diabetic retinopathy is the leading cause of blindness in the working age population of most developed countries but has been shown to no longer be the leading cause in England and Wales. The introduction of the national screening programmes has been considered to be a major contributor to this achievement. The people with diabetes who still lose vision are often non-attenders who present late in the disease when treatment is more difficult. Tightening of control of glycaemia and blood pressure can slow the disease progression. When sight threatening retinopathy is detected, laser treatment and vascular endothelial growth factor (VEGF) inhibitor treatments reduce the risk of visual loss. When advanced retinopathy is detected, vitrectomy results have improved considerably over the last 20 years and a reasonable level of vision is often retained.
糖尿病视网膜病变是大多数发达国家工作年龄人口失明的主要原因,但在英格兰和威尔士已不再是主要原因。国家筛查方案的推行被认为是取得这一成就的一个主要因素。仍然失明的糖尿病患者往往不参加治疗,他们出现的时间较晚,这时治疗比较困难。加强对血糖和血压的控制可以减缓疾病的进展。当发现威胁视力的视网膜病变时,激光治疗和血管内皮生长因子(VEGF)抑制剂治疗可降低视力丧失的风险。在过去的20年里,当发现晚期视网膜病变时,玻璃体切除术的结果有了很大的改善,并且通常保留了合理的视力水平。
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引用次数: 0
Health Economics of Diabetes Care and Prevention 糖尿病护理和预防的卫生经济学
Pub Date : 2021-07-01 DOI: 10.1093/med/9780198870197.003.0286
P. Clarke, Tom W. C. Lung
There is an ever-increasing demand for healthcare. While clinical studies determine an intervention’s efficacy or effectiveness, limited resources mean that choices need to be made when deciding which healthcare interventions should be funded. Health economics focuses on how to make these choices to fund healthcare interventions that will maximize health benefits. This chapter introduces the ideas of key drivers in healthcare costs and issues around sustainability of funding for diabetes-specific programmes. It will then focus on the concept and different types of economic evaluation, measuring quality-adjusted life-years, and its use in identifying diabetes interventions that provide value for money, providing specific examples.
对医疗保健的需求不断增加。虽然临床研究决定了干预措施的功效或有效性,但有限的资源意味着在决定应该资助哪些卫生保健干预措施时需要做出选择。卫生经济学关注的是如何做出这些选择,为卫生保健干预提供资金,使健康效益最大化。本章介绍了医疗保健费用的关键驱动因素以及围绕糖尿病特定规划的资金可持续性的问题。然后,它将重点介绍经济评估的概念和不同类型,衡量质量调整生命年,以及它在确定提供物有所值的糖尿病干预措施中的应用,并提供具体的例子。
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引用次数: 0
Types of Treatment 治疗类型
Pub Date : 2021-07-01 DOI: 10.1093/med/9780198870197.003.0387
G. Rastrelli, M. Maggi, G. Corona
Several therapeutic options are available in the treatment of adult hypogonadism, the choice of which depend on the clinical situation, availability/costs of medications, patient expectations, and preferences. The induction or restoration of both fertility and testosterone (T) production are potentially achievable, in patients with secondary hypogonadism, whereas only T substitution is effective when the testes are damaged (i.e. primary hypogonadism). When fertility is desired, the use of gonadotrophins in secondary hypogonadism is the most appropriate treatment allowing sperm production to be achieved in about 50% of cases. In all other patients, T substitution is the treatment of choice as it is cheaper and easier to administer when compared to gonadotropins. The use of transdermal T preparations and long-acting injectable T undecanoate are currently the most popular forms of the treatment worldwide. They generally achieve a high level of efficacy with limited side effects.
成人性腺功能减退症有几种治疗方案,其选择取决于临床情况、药物的可得性/成本、患者期望和偏好。在继发性性腺功能减退患者中,诱导或恢复生育能力和睾酮(T)的产生是可能实现的,而当睾丸受损(即原发性性腺功能减退)时,只有T替代是有效的。当希望生育时,在继发性性腺功能减退症中使用促性腺激素是最合适的治疗方法,约50%的病例可实现精子产生。在所有其他患者中,T替代是治疗的选择,因为与促性腺激素相比,它更便宜,更容易管理。透皮T制剂和长效十一酸T注射剂的使用是目前世界范围内最流行的治疗形式。它们通常达到高水平的疗效,副作用有限。
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引用次数: 0
Treatment of Hypothyroidism 甲状腺功能减退症的治疗
Pub Date : 2021-07-01 DOI: 10.1093/med/9780198870197.003.0072
B. Nygaard
The goals for treatment of primary hypothyroidism are to restore euthyroidism with normalization of serum thyroid-stimulating hormone (TSH) and fT4 concentrations and to eliminate symptoms. Thyroxine, as levothyroxine sodium (L-T4), is the therapy of choice, and its use in most patients’ treatment is straightforward. In a minor patient group, persistent symptoms are present although thyroid function parameters are normalized. In these patients, it is pertinent to search for alternative explanations for the symptoms other than thyroid disease. A possible effect of a combination of L-T4 and L-T3 is disputed. Overtreatment with suppressed serum TSH must be avoided due to risks of cardiovascular disease, osteoporosis, and dementia.
原发性甲状腺功能减退的治疗目标是恢复甲状腺功能正常,血清促甲状腺激素(TSH)和fT4浓度正常化,并消除症状。甲状腺素,作为左旋甲状腺素钠(L-T4),是首选的治疗方法,它在大多数患者的治疗中使用是直接的。在少数患者组中,尽管甲状腺功能参数正常,但仍存在持续症状。在这些患者中,寻找甲状腺疾病以外的其他症状解释是相关的。L-T4和L-T3联合使用可能产生的影响存在争议。由于心血管疾病、骨质疏松和痴呆的风险,必须避免过度治疗抑制血清TSH。
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引用次数: 0
Hypopituitarism
Pub Date : 2021-07-01 DOI: 10.1093/med/9780198870197.003.0021
M. Levy, R. Bhake, N. Reddy
Hypopituitarism is the consequence of diseases or interventions resulting in deficiency of pituitary hormones. Pituitary hormone replacement is one of the most frequent clinical interventions in pituitary disease, yet is rarely been the subject of rigorous scientific evaluation. With the exception of growth hormone, anterior pituitary hormones are replaced with target hormones (sex steroids, cortisol, and thyroxine), in preference to pituitary trophic hormones, as the former have longer half-lives allowing for oral administration. The precise reason for increased morbidity and mortality associated with hypopituitarism is unclear, but underlines the importance of replacing hormones close to physiological patterns. In an era of ‘evidence-based’ medicine, recommendations are frequently based on clinical experience, consensus guidelines, and retrospective reviews rather than on randomized trials. Within these limitations, this chapter will attempt to give a balanced view on current best practice for replacement therapy in adrenocorticotropic hormone (ACTH), thyroid-stimulating hormone (TSH), and gonadotrophin deficiency.
垂体功能低下是疾病或干预导致垂体激素缺乏的后果。垂体激素替代是垂体疾病最常见的临床干预措施之一,但很少受到严格的科学评估。除生长激素外,垂体前叶激素被目标激素(性类固醇、皮质醇和甲状腺素)取代,而不是垂体营养激素,因为前者具有较长的半衰期,允许口服。垂体功能减退增加发病率和死亡率的确切原因尚不清楚,但强调了替换接近生理模式的激素的重要性。在“循证”医学时代,建议往往基于临床经验、共识指南和回顾性评价,而不是随机试验。在这些限制下,本章将尝试对促肾上腺皮质激素(ACTH)、促甲状腺激素(TSH)和促性腺激素缺乏症的替代疗法的当前最佳实践给出一个平衡的观点。
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引用次数: 0
Type 1 Diabetes and Psychiatry 1型糖尿病和精神病学
Pub Date : 2021-07-01 DOI: 10.1093/med/9780198870197.003.0273
K. Ismail, Christopher J. Garrett, M. Stadler
There is a consistent pattern of association of several psychiatric disorders and type 1 diabetes (T1D) including depression, anxiety, eating disorders, and personality disorders. The presumption is that most psychiatric morbidity is accrued from the psychological burden per se of T1D or that individuals with subclinical pre-existing mental health difficulties are tipped into an overt psychiatric diagnosis. Elements of the T1D regime, namely the acute focus on food and the energy it contains, as well as heightened requirements of self-control can predispose to eating disorders, while others find the unrelenting requirements profoundly depressing, leading to clinical depression. Others acquire diabetes-specific anxieties, such as fear of hypoglycaemia or preoccupation with long-term complications. Psychiatric disorders impact diabetes self-management and there is an established association with acute and long-term complications including increased mortality. An underlying mental health problem should be a primary differential in certain clinical scenarios. such as persistent high HbA1c (>80 mmol/mol IFCC), particularly with recurrent diabetic ketoacidosis (rDKA) and also those with recurrent severe hypoglycaemia. This is particularly important in rDKA where subsequent all-cause mortality is in excess of 15% and closely linked to mental health disorders. Early recognition of psychiatric disorders is therefore vital for prognosis for both physical and mental health and diabetes clinicians should routinely monitor for psychiatric disorders.
几种精神疾病与1型糖尿病(T1D)有一致的关联模式,包括抑郁、焦虑、饮食失调和人格障碍。假设大多数精神疾病的发病率是由T1D本身的心理负担引起的,或者是有亚临床存在的精神健康问题的个体被提示为明显的精神疾病诊断。T1D疗法的一些因素,即对食物及其所含能量的极度关注,以及对自我控制的高度要求,容易导致饮食失调,而其他人则认为这种无情的要求非常令人沮丧,导致临床抑郁症。另一些人则获得了糖尿病特有的焦虑,比如对低血糖的恐惧或对长期并发症的担忧。精神疾病影响糖尿病的自我管理,并与急性和长期并发症(包括死亡率增加)有明确的关联。在某些临床情况下,潜在的精神健康问题应该是主要的区别。例如持续高HbA1c (>80 mmol/mol IFCC),特别是复发性糖尿病酮症酸中毒(rDKA)和复发性严重低血糖患者。这在rDKA中尤其重要,因为随后的全因死亡率超过15%,并与精神健康障碍密切相关。因此,精神疾病的早期识别对于身体和精神健康的预后至关重要,糖尿病临床医生应定期监测精神疾病。
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引用次数: 0
Carcinoid Syndrome 类癌综合征
Pub Date : 2021-07-01 DOI: 10.1093/med/9780198870197.003.0108
D. Clement, R. Srirajaskanthan, M. Caplin
Carcinoid syndrome occurs in approximately 20% of patients with neuroendocrine tumours. Its pathophysiology is not completely understood; however, it is thought to arise from secretion of serotonin and kinins from the neuroendocrine tumour cells. In patients with liver metastases these hormones are not metabolized by the liver and consequently lead to the symptoms of carcinoid syndrome. The most common symptoms are diarrhoea, flushing, abdominal pain, and wheezing. Management of carcinoid syndrome is centred around control of tumour growth and symptoms. First line treatment is with somatostatin analogues, more recently Telotristat ethyl has been licensed for refractory syndrome. A number of complications can arise secondary to serotonin and kinin secretion these include nutritional deficiency, mesenteric fibrosis, and carcinoid heart disease. Carcinoid crisis which comprises of severe haemodynamic instability can occur during times of stress or surgery. Careful preoperative management needs to be considered prior to surgery in this cohort of patients.
大约20%的神经内分泌肿瘤患者出现类癌综合征。其病理生理机制尚不完全清楚;然而,它被认为是由神经内分泌肿瘤细胞分泌的血清素和激肽引起的。在肝转移患者中,这些激素不能被肝脏代谢,因此导致类癌综合征的症状。最常见的症状是腹泻、脸红、腹痛和喘息。类癌综合征的治疗以控制肿瘤生长和症状为中心。一线治疗是使用生长抑素类似物,最近已批准使用Telotristat乙酯治疗难治性综合征。继发于5 -羟色胺和激肽分泌的并发症包括营养缺乏、肠系膜纤维化和类癌性心脏病。类癌危象包括严重的血流动力学不稳定,可发生在压力或手术期间。在这组患者中,在手术前需要考虑仔细的术前管理。
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引用次数: 0
Gastrinoma
Pub Date : 2021-07-01 DOI: 10.1093/med/9780198870197.003.0111
C. Toumpanakis, M. Caplin
Gastrinomas are functional neuroendocrine tumours, characterized by autonomous release of gastrin by the tumour cells, which results in symptoms not only due to the tumour growth per se, but also due to gastric acid hypersecretion. Gastrinomas can either be sporadic or can be associated with multiple endocrine neoplasia type 1 (MEN-1) syndrome in 25% of cases. The duodenum (especially the first and the second part) is the most common location for both sporadic and MEN-1 associated gastrinomas. Most of the symptoms in patients with gastrinomas include peptic ulcers resistant to treatment, erosive oesophagitis, and chronic diarrhoea. Fasting serum gastrin levels of >10-fold the upper normal limit in the presence of gastric p H<2 or basal acid output (BAO)>15 mmol/h confirm the clinical suspicion, of a gastrinoma. Precise localization of primary tumour as well as metastatic deposits can be achieved through the new molecular imaging studies (68Ga-DOTA PET) in combination with good quality cross-sectional imaging studies and endoscopic ultrasound. Once the diagnosis is established, it is important to control gastric acid hypersecretion and prevent its complications, by using high-doses proton pump inhibitors. The aim of surgery in patients with sporadic gastrinomas is curative resection, in order to decrease the risk of development of distant metastases, as well as to completely control the hormonal symptoms. The benefit of surgery in gastrinomas associated with MEN-1 syndrome is controversial. All patients with advanced and inoperable disease should have systemic antitumour treatment (somatostatin analogues, molecular targeted agents, chemotherapy, peptide receptor radionuclide therapy) in order to prolong the survival rates.
胃泌素瘤是一种功能性神经内分泌肿瘤,其特征是肿瘤细胞自主释放胃泌素,其症状不仅是由于肿瘤本身的生长,而且是由于胃酸分泌过多。胃泌素瘤可以是散发性的,也可以在25%的病例中伴有多发性内分泌肿瘤1型(men1)综合征。十二指肠(尤其是第一和第二部分)是散发性和man -1相关胃泌素瘤最常见的部位。胃原质瘤患者的大多数症状包括难以治疗的消化性溃疡、糜烂性食管炎和慢性腹泻。空腹血清胃泌素水平>正常上限的10倍,胃泌素存在H15 mmol/h,证实临床怀疑为胃泌素瘤。通过新的分子成像研究(68Ga-DOTA PET),结合高质量的横断面成像研究和内镜超声,可以实现原发肿瘤和转移沉积物的精确定位。一旦诊断确定,重要的是通过使用大剂量质子泵抑制剂来控制胃酸分泌过多并预防其并发症。散发性胃原质瘤的手术目的是根治性切除,以降低远处转移的风险,并完全控制激素症状。手术治疗与man -1综合征相关的胃鞘瘤的益处是有争议的。所有晚期和不能手术的患者都应进行全身抗肿瘤治疗(生长抑素类似物、分子靶向药物、化疗、肽受体放射性核素治疗),以延长生存率。
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引用次数: 0
Effect of Opioids on Adrenal and Reproductive Endocrinology 阿片类药物对肾上腺和生殖内分泌的影响
Pub Date : 2021-07-01 DOI: 10.1093/med/9780198870197.003.0211
E. Armeni, A. Grossman, B. Khoo
Endogenous opioids and opioid receptors play key neuroendocrinological roles in regulating the body’s response to stress and pain. As part of this function, endogenous opioids regulate the hypothalamo–pituitary–adrenal (HPA), hypothalamo—pituitary–gonadal axes (HPG) axes and posterior pituitary function. Exogenous opioids have been used from ancient times as analgesics but have a well-known addictive potential. Opiate dependency is now a widespread global problem, driven by the easy availability of both prescribed and illegal opiates. As a consequence, the endocrine complications from opiates are becoming more common and chronic opiate users are at high risk of developing hypoadrenalism and hypogonadism. A robust screening protocol for these endocrinopathies, in collaboration between pain specialists and endocrinologists, is essential for appropriate replacement treatment and the prevention of morbidities and possibly mortality, especially from hypoadrenalism.
内源性阿片和阿片受体在调节身体对压力和疼痛的反应中起着关键的神经内分泌作用。作为该功能的一部分,内源性阿片调节下丘脑-垂体-肾上腺(HPA),下丘脑-垂体-性腺轴(HPG)轴和垂体后叶功能。外源性阿片类药物自古以来就被用作镇痛药,但众所周知,它具有成瘾性。由于处方和非法阿片类药物都很容易获得,阿片类药物依赖现在是一个普遍的全球问题。因此,阿片类药物引起的内分泌并发症越来越普遍,长期阿片类药物使用者发生肾上腺功能减退和性腺功能减退的风险很高。在疼痛专家和内分泌学家的合作下,对这些内分泌疾病进行强有力的筛查方案,对于适当的替代治疗和预防发病率和可能的死亡率,特别是肾上腺素减退,是必不可少的。
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引用次数: 0
Management of Primary Aldosteronism 原发性醛固酮增多症的治疗
Pub Date : 2021-07-01 DOI: 10.1093/med/9780198870197.003.0100
W. Drake, Morris J. Brown
Major advances have been made since Jerome Conn first described the meticulous assessment and surgical treatment of a patient with severe primary aldosteronism (PA) more than 60 years ago. Diagnostic criteria, although still imperfect, have been refined; high definition cross-sectional imaging is widely available; adrenal vein sampling (AVS) is practised to a high standard in selected centres; low-morbidity laparoscopic adrenalectomy (replacing open surgery involving rib resection) is now routine; preliminary data are emerging about the utility of radiofrequency ablation of adrenal nodules as an alternative to surgery; and the range of medical therapies, available or in development, is expanding. Despite this, based on current prevalence estimates, it remains the case that under 1% of patients with PA are fully evaluated and treated. Given the evidence that PA is associated with substantial excess cardiometabolic morbidity over and above that conferred by elevated blood pressure alone, this underprovision of clinical care represents a major public health issue. This chapter will describe the current approach to the management of PA (from its initial suspicion, diagnosis, differential diagnosis, treatment, and evaluation of the success of treatment) and highlight areas of particular uncertainty and controversy.
60多年前,Jerome Conn首次描述了对严重原发性醛固酮增多症(PA)患者的细致评估和手术治疗,此后取得了重大进展。诊断标准虽然仍不完善,但已得到改进;高清晰度横断面成像已广泛应用;肾上腺静脉取样(AVS)在选定的中心实行高标准;低发病率的腹腔镜肾上腺切除术(取代开放手术包括肋骨切除)现在是常规;初步数据显示,射频消融治疗肾上腺结节可替代手术治疗;现有或正在开发的医疗疗法的范围正在扩大。尽管如此,根据目前的患病率估计,仍有不到1%的PA患者得到了充分的评估和治疗。鉴于有证据表明,PA与高血压单独引起的大量心脏代谢发病率相关,这种临床护理的不足代表了一个主要的公共卫生问题。本章将描述目前PA管理的方法(从最初的怀疑、诊断、鉴别诊断、治疗和治疗成功的评估),并强调特别不确定和争议的领域。
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引用次数: 0
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Oxford Textbook of Endocrinology and Diabetes 3e
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