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Fujieda T. Further Study Needed on Antihypertensive Medications and Fracture Risks. JAMA Intern Med 2024; 184:1265-1266. [PMID: 39158857 DOI: 10.1001/jamainternmed.2024.3934] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 08/20/2024]
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Kwon S, Kim H, Lee J, Shin J, Kim SH, Hwang JH. Thiazide-associated hyponatremia in arterial hypertension patients: A nationwide population-based cohort study. J Evid Based Med 2024; 17:296-306. [PMID: 38566339 DOI: 10.1111/jebm.12601] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/05/2023] [Accepted: 03/14/2024] [Indexed: 04/04/2024]
Abstract
OBJECTIVE Thiazides are the first-line treatment for hypertension, however, they have been associated with hospitalizations for thiazide-associated hyponatremia (TAH). The aim of this study was to evaluate the risk of TAH and other drug-associated hyponatremia in a Korean population. METHODS The study used big data from the National Health Insurance Sharing Service of 1,943,345 adults treated for hypertension from January 2014 to December 2016. The participants were divided into two groups based on the use of thiazides. Cox proportional hazard models were used to identify independent risk factors for the occurrence of hyponatremia. RESULTS The study found that hyponatremia-related hospitalizations were significantly higher in the thiazide group than the control group (2.19% vs. 1.45%). The risk increased further with concurrent use of other diuretics or desmopressin, and thiazide+spironolactone+desmopressin and hospitalization risk further increased (4.0 and 6.9 times). Multivariate analysis showed that hyponatremia occurrence increased with age, diabetes mellitus, depression, and thiazide use (hazard ratio = 1.436, p < 0.001). The thiazide group had better 6-year overall survival than the control group but had more fractures and hyponatremia. CONCLUSIONS Thiazide use is associated with an increased risk of hyponatremia and related complications. However, the mortality rate decreased in those who received thiazides, suggesting that thiazide use itself is not harmful and may help decrease complications and improve prognosis with proper, cautious use in high-risk patients.
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Affiliation(s)
- Soie Kwon
- Department of Internal Medicine, Chung-Ang University Hospital, Seoul, Republic of Korea
| | - Hasung Kim
- Data Science Team, Hanmi Pharm. Co., Ltd, Seoul, Republic of Korea
| | - Jungkuk Lee
- Data Science Team, Hanmi Pharm. Co., Ltd, Seoul, Republic of Korea
| | - Jungho Shin
- Department of Internal Medicine, Chung-Ang University Hospital, Seoul, Republic of Korea
- Department of Internal Medicine, Chung-Ang University College of Medicine, Seoul, Republic of Korea
| | - Su Hyun Kim
- Department of Internal Medicine, Chung-Ang University College of Medicine, Seoul, Republic of Korea
- Department of Internal Medicine, Chung-Ang University Gwangmyeong Hospital, Gyeonggi, Republic of Korea
| | - Jin Ho Hwang
- Department of Internal Medicine, Chung-Ang University Hospital, Seoul, Republic of Korea
- Department of Internal Medicine, Chung-Ang University College of Medicine, Seoul, Republic of Korea
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Sumida K, Shrestha P, Mallisetty Y, Surbhi S, Thomas F, Streja E, Kalantar-Zadeh K, Kovesdy CP. Incident Diuretic Use and Subsequent Risk of Bone Fractures: A Large Nationwide Observational Study of US Veterans. Mayo Clin Proc 2024; 99:913-926. [PMID: 38573302 DOI: 10.1016/j.mayocp.2023.09.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Revised: 09/14/2023] [Accepted: 09/19/2023] [Indexed: 04/05/2024]
Abstract
OBJECTIVE To investigate the association of incident use of diuretics with subsequent risk of incident bone fractures. PATIENTS AND METHODS In a nationwide cohort of 863,339 US veterans receiving care from the VA health care system between October 1, 2004, and September 30, 2006, with follow-up through June 30, 2018, we examined the association of incident diuretic use (overall, and separately by thiazide, loop, and potassium-sparing diuretics) with subsequent risk of incident bone fractures using multivariable Cox regression models while minimizing confounding by indication using a target trial emulation approach. RESULTS Patients were 63.3±12.9 years old; 93.5% (n=807,180) were male; and 27.1% (n=233,996) were diabetic. Their baseline estimated glomerular filtration rate was 84.4±16.5 mL/min per 1.73 m2. Among 863,339 patients, 424,386 (49.2%) newly initiated diuretics, of which 77.4% (n=328,524), 22.5% (n=95,457), and 0.1% (n=405) were thiazide, loop, and potassium-sparing diuretic users, respectively. After multivariable adjustments, incident diuretic use (vs non-use) was significantly associated with higher risk of incident fracture (adjusted HR [aHR], 1.14; 95% CI, 1.11 to 1.16). The association was most pronounced for loop diuretics (aHR, 1.39; 95% CI, 1.35 to 1.44) but less evident for thiazide diuretics (aHR, 1.08; 95% CI, 1.06 to 1.10) and was not significant for potassium-sparing diuretics (aHR, 0.97; 95% CI, 0.62 to 1.52). The diuretic-fracture association was more evident in younger (vs older) patients, those with (vs without) corticosteroid use, and those with lower (vs higher) serum sodium levels. CONCLUSION Incident use of diuretics, particularly loop diuretics, was independently associated with higher risk of incident bone fractures. Our findings suggest distinct pathophysiologic contributions of diuretics to bone metabolism and the need for careful attention to skeletal outcomes when initiating diuretics.
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Affiliation(s)
- Keiichi Sumida
- Division of Nephrology, Department of Medicine, University of Tennessee Health Science Center, Memphis, TN, USA
| | - Prabin Shrestha
- Division of Nephrology, Department of Medicine, University of Tennessee Health Science Center, Memphis, TN, USA
| | - Yamini Mallisetty
- Division of Nephrology, Department of Medicine, University of Tennessee Health Science Center, Memphis, TN, USA
| | - Satya Surbhi
- Center for Health System Improvement, Department of Medicine, University of Tennessee Health Science Center, Memphis, TN, USA
| | - Fridtjof Thomas
- Division of Biostatistics, Department of Preventive Medicine, College of Medicine, University of Tennessee Health Science Center, Memphis, TN, USA
| | - Elani Streja
- Division of Nephrology, Hypertension, and Kidney Transplantation, Department of Medicine, University of California Irvine School of Medicine, Orange, CA, USA; Tibor Rubin Veterans Affairs Medical Center, Long Beach, CA, USA
| | - Kamyar Kalantar-Zadeh
- Division of Nephrology, Hypertension, and Kidney Transplantation, Department of Medicine, University of California Irvine School of Medicine, Orange, CA, USA; Tibor Rubin Veterans Affairs Medical Center, Long Beach, CA, USA
| | - Csaba P Kovesdy
- Division of Nephrology, Department of Medicine, University of Tennessee Health Science Center, Memphis, TN, USA; Nephrology Section, Memphis VA Medical Center, Memphis, TN, USA.
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Zhang R, Yin H, Yang M, Lei X, Zhen D, Zhang Z. Advanced Progress of the Relationship Between Antihypertensive Drugs and Bone Metabolism. Hypertension 2023; 80:2255-2264. [PMID: 37675564 DOI: 10.1161/hypertensionaha.123.21648] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/08/2023]
Abstract
Hypertension and osteoporosis are common comorbidities among elderly individuals. Drug therapy has been widely used in clinical practice as the preferred antihypertensive treatment. Therefore, antihypertensive drugs have become some of the most commonly prescribed drugs in healthcare settings. However, antihypertensive drugs have different effects on bone metabolism. The results of animal and clinical studies on the effects of antihypertensive drugs on osteoporosis or fracture risk are controversial and have aroused widespread concern among clinicians. Recent studies found that angiotensin receptor blockers, selective β-adrenergic receptor blockers, and thiazide diuretics might improve bone trabecular number and bone mineral density by stimulating osteoblast differentiation, reducing osteoclast generation, and other mechanism. Furthermore, nonselective β-adrenergic receptor blockers and dihydropyridine calcium channel blockers were found to have no significant relationship with bone mineral density or bone strength, and α-adrenergic receptor blockers and loop diuretics might increase fracture risk by decreasing bone mineral density. This article aimed to review previous animal experiments, clinical studies, and meta-analyses focusing on the effects of different antihypertensive drugs on bone metabolism, and to provide a new approach for the prevention and treatment of osteoporosis.
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Affiliation(s)
- Ruixing Zhang
- The First Clinical Medical College, Lanzhou University, China (R.Z., M.Y.)
- Department of Heart Center (R.Z., Z.Z.), The First Hospital of Lanzhou University, China
| | - Hongtao Yin
- Department of Endocrinology (H.Y., M.Y., D.Z.), The First Hospital of Lanzhou University, China
| | - Mengdi Yang
- The First Clinical Medical College, Lanzhou University, China (R.Z., M.Y.)
- Department of Endocrinology (H.Y., M.Y., D.Z.), The First Hospital of Lanzhou University, China
| | - Xianqiong Lei
- Department of Geriatrics, The First People's Hospital of Yibin, China (X.L.)
| | - Donghu Zhen
- Department of Endocrinology (H.Y., M.Y., D.Z.), The First Hospital of Lanzhou University, China
| | - Zheng Zhang
- Department of Heart Center (R.Z., Z.Z.), The First Hospital of Lanzhou University, China
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Tzoulis P, Yavropoulou MP. Association of hyponatremia with bone mineral density and fractures: a narrative review. Ther Adv Endocrinol Metab 2023; 14:20420188231197921. [PMID: 37736657 PMCID: PMC10510353 DOI: 10.1177/20420188231197921] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/30/2022] [Accepted: 07/13/2023] [Indexed: 09/23/2023] Open
Abstract
Recent studies suggest a possible association of hyponatremia with osteoporosis, falls and bone fractures. The objectives of this narrative review were to further explore this association and the related pathophysiological mechanisms and to suggest a practical approach to patients with osteoporosis or chronic hyponatremia in clinical practice. We conducted an extensive PubMed search until October 2022 with the combination of the following keywords: 'hyponatremia' or 'sodium' or 'SIADH' and 'fractures' or 'bone' or 'osteoporosis', as MeSH Terms. Review of numerous observational studies confirms a significant independent association of, even mild, hyponatremia with two- to three-fold increase in the occurrence of bone fractures. Hyponatremia is a risk factor for osteoporosis with a predilection to affect the hip, while the magnitude of association depends on the severity and chronicity of hyponatremia. Chronic hyponatremia also increases the risk for falls by inducing gait instability and neurocognitive deficits. Besides the detrimental impact of hyponatremia on bone mineral density and risk of falls, it also induces changes in bone quality. Emerging evidence suggests that acute hyponatremia shifts bone turnover dynamics towards less bone formation, while hyponatremia correction increases bone formation. The key unanswered question whether treatment of hyponatremia could improve osteoporosis and lower fracture risk highlights the need for prospective studies, evaluating the impact of sodium normalization on bone metabolism and occurrence of fractures. Recommendations for clinical approach should include measurement of serum sodium in all individuals with fracture or osteoporosis. Also, hyponatremia, as an independent risk factor for fracture, should be taken into consideration when estimating the likelihood for future fragility fracture and in clinical decision-making about pharmacological therapy of osteoporosis. Until it is proven that normalization of sodium can lower fracture occurrence, correcting hyponatremia cannot be universally recommended on this basis, but should be decided on a case-by-case basis.
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Affiliation(s)
- Ploutarchos Tzoulis
- Department of Metabolism & Experimental Therapeutics, Division of Medicine, University College London Medical School, Gower Street, London, WC1E6BT, UK
| | - Maria P. Yavropoulou
- Department of Propaedeutic and Internal Medicine, Medical School of University of Athens, Endocrinology Unit, Athens, Attica, Greece
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Huynh HL, Fan L, Germosen C, Bucovsky M, Colon I, Kil N, Agarwal S, Walker M. Thiazide use and skeletal microstructure: Results from a multi-ethnic study. Bone Rep 2022; 16:101589. [PMID: 35601882 PMCID: PMC9121265 DOI: 10.1016/j.bonr.2022.101589] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Revised: 05/04/2022] [Accepted: 05/06/2022] [Indexed: 10/29/2022] Open
Abstract
Background Thiazide diuretics, a commonly used class of anti-hypertensives, have been associated with increased areal bone mineral density (aBMD). Data regarding effects on fracture are conflicting and no information is available regarding effects on skeletal microstructure and mechanical competence. Methods We compared skeletal microstructure, volumetric BMD (vBMD), stiffness and prevalent fractures in current thiazide diuretic users and non-users from a population-based multiethnic cohort of elderly adults age ≥ 65 years (N = 599) with high resolution peripheral quantitative computed tomography (HR-pQCT) and micro-finite element analysis. Results Female current thiazide diuretic users had higher weight and BMI and were more likely to be non-Caucasian compared to non-users. There were no differences in age, historical fractures or falls between female users and non-users. Female thiazide users tended to have lower calcium and vitamin d intake compared to non-users. After adjusting for age, weight, race and other covariates, 1/3-radius mean aBMD by dual energy x-ray absorptiometry (DXA) was 3.2% (p = 0.03) higher in female users vs. non-users. By HRpQCT, adjusted mean cortical vBMD was 2.4% (p = 0.03) higher at the radius in female users vs. non-users, but there was no difference in stiffness. DXA results were similar in the subset of Black females. There was no difference in any adjusted aBMD or cortical skeletal parameters by DXA or HRpQCT respectively in males. Conclusions Thiazide use was associated with a modestly higher aBMD at the predominantly cortical 1/3-radius site and radial cortical vBMD by HRpQCT in females. The effect on cortical bone may offer skeletal benefits in women taking thiazides for other indications such as hypertension, hypercalciuria or recurrent nephrolithiasis.
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Affiliation(s)
- Hoang-Long Huynh
- Division of Endocrinology, Columbia University Irving Medical Center, New York, NY 10032, United States of America
| | - Lena Fan
- Division of Endocrinology, Columbia University Irving Medical Center, New York, NY 10032, United States of America
| | - Carmen Germosen
- Division of Endocrinology, Columbia University Irving Medical Center, New York, NY 10032, United States of America
| | - Mariana Bucovsky
- Division of Endocrinology, Columbia University Irving Medical Center, New York, NY 10032, United States of America
| | - Ivelisse Colon
- Division of Endocrinology, Columbia University Irving Medical Center, New York, NY 10032, United States of America
| | - Nayoung Kil
- Division of Endocrinology, Columbia University Irving Medical Center, New York, NY 10032, United States of America
| | - Sanchita Agarwal
- Division of Endocrinology, Columbia University Irving Medical Center, New York, NY 10032, United States of America
| | - Marcella Walker
- Division of Endocrinology, Columbia University Irving Medical Center, New York, NY 10032, United States of America
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Antihypertensive drugs demonstrate varying levels of hip fracture risk: A systematic review and meta-analysis. Injury 2022; 53:1098-1107. [PMID: 34627629 DOI: 10.1016/j.injury.2021.09.036] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Accepted: 09/17/2021] [Indexed: 02/02/2023]
Abstract
OBJECTIVE By aggregating the literature, we evaluated the association between use of specific antihypertensive drugs and the risk of hip fractures compared with nonuse. STUDY DESIGN AND SETTING We systematically searched the Pubmed, Embase, and Cochrane databases from inception of each database until July 30, 2020 to identify articles including patients 18 years of age or older reporting on the association between antihypertensive drugs and the risk of hip fracture. Antihypertensive drugs were restricted to thiazides; beta-blockers; calcium-channel blockers; angiotensin-converting enzyme (ACE) inhibitors; and angiotensin receptor blockers. Nonusers encompass all patients that are not using the specific antihypertensive drug that has been reported. Unadjusted odds ratios with 95% confidence intervals (CIs) of the association between antihypertensive drug use and hip fractures were reported. Meta-analysis was performed when a minimum of five studies were identified for each antihypertensive drug class. Quality assessment was done using ROBINS-I tool. The GRADE approach was used to evaluate the certainty of the evidence. RESULTS Of 962 citations, 22 observational studies were included; 9 studies had a cohort design and 13 studies were case-control studies. No randomized controlled trials were identified. We found very low certainty of evidence that both thiazides (pooled odds ratio: 0.85, 95% CI 0.73 to 0.99, p = 0.04) as well as beta-blockers (pooled odds ratio: 0.88, 95% CI 0.79 to 0.98, p = 0.02) were associated with a reduced hip fracture risk as compared to specific nonuse. One study, reporting on angiotensin receptor blockers, also suggested a protective effect for hip fractures, whereas we found conflicting findings in four studies for calcium-channel blockers and in two studies for ACE inhibitors. CONCLUSION Among 22 observational studies, we found very low certainty of evidence that, compared to specific nonuse of antihypertensive drugs, use of thiazides, beta-blockers, and angiotensin receptor blockers were associated with a reduced protective hip fracture risk, while conflicting findings for calcium-channel blockers and ACE inhibitors were found. Given the low quality of included studies, further research -randomized controlled trials- are needed to definitively assess the causal relationship between specific antihypertensive drug classes and (relatively infrequent) hip fractures.
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The Effects of Osteoporotic and Non-osteoporotic Medications on Fracture Risk and Bone Mineral Density. Drugs 2021; 81:1831-1858. [PMID: 34724173 PMCID: PMC8578161 DOI: 10.1007/s40265-021-01625-8] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/11/2021] [Indexed: 12/26/2022]
Abstract
Osteoporosis is a highly prevalent bone disease affecting more than 37.5 million individuals in the European Union (EU) and the United States of America (USA). It is characterized by low bone mineral density (BMD), impaired bone quality, and loss of structural and biomechanical properties, resulting in reduced bone strength. An increase in morbidity and mortality is seen in patients with osteoporosis, caused by the approximately 3.5 million new osteoporotic fractures occurring every year in the EU. Currently, different medications are available for the treatment of osteoporosis, including anti-resorptive and osteoanabolic medications. Bisphosphonates, which belong to the anti-resorptive medications, are the standard treatment for osteoporosis based on their positive effects on bone, long-term experience, and low costs. However, not only medications used for the treatment of osteoporosis can affect bone: several other medications are suggested to have an effect on bone as well, especially on fracture risk and BMD. Knowledge about the positive and negative effects of different medications on both fracture risk and BMD is important, as it can contribute to an improvement in osteoporosis prevention and treatment in general, and, even more importantly, to the individual's health. In this review, we therefore discuss the effects of both osteoporotic and non-osteoporotic medications on fracture risk and BMD. In addition, we discuss the underlying mechanisms of action.
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Jørgensen HS, David K, Salam S, Evenepoel P. Traditional and Non-traditional Risk Factors for Osteoporosis in CKD. Calcif Tissue Int 2021; 108:496-511. [PMID: 33586002 DOI: 10.1007/s00223-020-00786-0] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Accepted: 12/02/2020] [Indexed: 12/11/2022]
Abstract
Osteoporosis is a state of bone fragility with reduced skeletal resistance to trauma, and consequently increased risk of fracture. A wide range of conditions, including traditional risk factors, lifestyle choices, diseases and their treatments may contribute to bone fragility. It is therefore not surprising that the multi-morbid patient with chronic kidney disease (CKD) is at a particularly high risk. CKD is associated with reduced bone quantity, as well as impaired bone quality. Bone fragility in CKD is a composite of primary osteoporosis, accumulation of traditional and uremia-related risk factors, assaults brought on by systemic disease, and detrimental effects of drugs. Some risk factors are modifiable and represent potential targets for intervention. This review provides an overview of the heterogeneity of bone fragility in CKD.
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Affiliation(s)
- Hanne Skou Jørgensen
- Nephrology and Renal Transplantation Research Group, Department of Microbiology, Immunology and Transplantation, KU Leuven, Leuven, Belgium
- Institute of Clinical Medicine, Aarhus University, Aarhus, Denmark
| | - Karel David
- Nephrology and Renal Transplantation Research Group, Department of Microbiology, Immunology and Transplantation, KU Leuven, Leuven, Belgium
- Laboratory of Clinical and Experimental Endocrinology, Department of Chronic Diseases and Metabolism, KU Leuven, Leuven, Belgium
| | - Syazrah Salam
- Sheffield Kidney Institute, Sheffield Teaching Hospitals National Health Service Foundation Trust, Sheffield, UK
- Academic Unit of Bone Metabolism and 3 Mellanby Centre for Bone Research, Medical School, University of Sheffield, Sheffield, UK
| | - Pieter Evenepoel
- Nephrology and Renal Transplantation Research Group, Department of Microbiology, Immunology and Transplantation, KU Leuven, Leuven, Belgium.
- Department of Nephrology and Renal Transplantation, University Hospitals Leuven, Leuven, Belgium.
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Hofmann W, Flägel K, Gosch M. [Hyponatremia in older persons (II)-A clear treatment : How to detect tricks and avoid pitfalls]. Z Gerontol Geriatr 2020; 53:463-472. [PMID: 32691149 DOI: 10.1007/s00391-020-01758-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Accepted: 06/17/2020] [Indexed: 10/23/2022]
Abstract
The aim of this continuing medical education (CME) article (part II) is to describe the particular challenge of the treatment of hyponatremia, which occurs in older patients. This part II follows on from part I concerning the diagnosis in the previous volume. A staged approach is necessary. The best treatment is always when the underlying cause can be eliminated. Hyponatremia in older patients is mainly induced by the syndrome of inappropriate antidiuretic hormone (SIADH) secretion. The authors use a concept for the first, second and third line strategy: (1) changing or discontinuation of drugs, (2) fluid restriction and (3) tolvaptan medication. The algorithm for treatment should be simple. It also contains recommendations for the correction rate. Caution is also needed in order to avoid the occurrence of an osmotic demyelination syndrome (ODS).
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Affiliation(s)
- Werner Hofmann
- Institut für Allgemeinmedizin, Universitätsklinikum Schleswig-Holstein (UKSH), Campus Lübeck, Ratzeburger Allee 160, 23538, Lübeck, Deutschland. .,Geriatrisches Zentrum Neumünster & Bad Bramstedt, Neumünster, Deutschland.
| | - Kristina Flägel
- Institut für Allgemeinmedizin, Universitätsklinikum Schleswig-Holstein (UKSH), Campus Lübeck, Ratzeburger Allee 160, 23538, Lübeck, Deutschland
| | - Markus Gosch
- Universitätsklinik für Geriatrie, Medizinische Klinik 2 - Schwerpunkt Geriatrie, Klinikum Nürnberg, Paracelsus Medizinische Privatuniversität, Campus Nürnberg, Nürnberg, Deutschland
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