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Geurts F, Xue L, Kramers BJ, Zietse R, Gansevoort RT, Fenton RA, Meijer E, Salih M, Hoorn EJ. Prostaglandin E2, Osmoregulation, and Disease Progression in Autosomal Dominant Polycystic Kidney Disease. Clin J Am Soc Nephrol 2023; 18:1426-1434. [PMID: 37574650 PMCID: PMC10637469 DOI: 10.2215/cjn.0000000000000269] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Accepted: 08/06/2023] [Indexed: 08/15/2023]
Abstract
BACKGROUND Prostaglandin E2 (PGE2) plays a physiological role in osmoregulation, a process that is affected early in autosomal dominant polycystic kidney disease (ADPKD). PGE2 has also been implicated in the pathogenesis of ADPKD in preclinical models, but human data are limited. Here, we hypothesized that urinary PGE2 excretion is associated with impaired osmoregulation, disease severity, and disease progression in human ADPKD. METHODS Urinary excretions of PGE2 and its metabolite (PGEM) were measured in a prospective cohort of patients with ADPKD. The associations between urinary PGE2 and PGEM excretions, markers of osmoregulation, eGFR and height-adjusted total kidney volume were assessed using linear regression models. Cox regression and linear mixed models were used for the longitudinal analysis of the associations between urinary PGE2 and PGEM excretions and disease progression defined as 40% eGFR loss or kidney failure, and change in eGFR over time. In two intervention studies, we quantified the effect of starting tolvaptan and adding hydrochlorothiazide to tolvaptan on urinary PGE2 and PGEM excretions. RESULTS In 562 patients with ADPKD (61% female, eGFR 63±28 ml/min per 1.73 m 2 ), higher urinary PGE2 or PGEM excretions were independently associated with higher plasma copeptin, lower urine osmolality, lower eGFR, and greater total kidney volume. Participants with higher baseline urinary PGE2 and PGEM excretions had a higher risk of 40% eGFR loss or kidney failure (hazard ratio, 1.28; 95% confidence interval [CI], 1.13 to 1.46 and hazard ratio, 1.50; 95% CI, 1.26 to 1.80 per two-fold higher urinary PGE2 or PGEM excretions) and a faster change in eGFR over time (-0.39 [95% CI, -0.59 to -0.20] and -0.53 [95% CI, -0.75 to -0.31] ml/min per 1.73 m 2 per year). In the intervention studies, urinary PGEM excretion was higher after starting tolvaptan, while urinary PGE2 excretion was higher after adding hydrochlorothiazide to tolvaptan. CONCLUSIONS Higher urinary PGE2 and PGEM excretions in patients with ADPKD are associated with impaired osmoregulation, disease severity, and progression.
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Affiliation(s)
- Frank Geurts
- Department of Internal Medicine, Division of Nephrology and Transplantation, Erasmus Medical Center, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Laixi Xue
- Department of Internal Medicine, Division of Nephrology and Transplantation, Erasmus Medical Center, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Bart J. Kramers
- Department of Internal Medicine, Division of Nephrology, University Medical Center Groningen, Groningen, The Netherlands
| | - Robert Zietse
- Department of Internal Medicine, Division of Nephrology and Transplantation, Erasmus Medical Center, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Ron T. Gansevoort
- Department of Internal Medicine, Division of Nephrology, University Medical Center Groningen, Groningen, The Netherlands
| | | | - Esther Meijer
- Department of Internal Medicine, Division of Nephrology, University Medical Center Groningen, Groningen, The Netherlands
| | - Mahdi Salih
- Department of Internal Medicine, Division of Nephrology and Transplantation, Erasmus Medical Center, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Ewout J. Hoorn
- Department of Internal Medicine, Division of Nephrology and Transplantation, Erasmus Medical Center, University Medical Center Rotterdam, Rotterdam, The Netherlands
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Mattson DL, Dasinger JH, Abais-Battad JM. Dietary Protein, Chronic Salt-Sensitive Hypertension, and Kidney Damage. Kidney360 2023; 4:1181-1187. [PMID: 37424061 PMCID: PMC10476688 DOI: 10.34067/kid.0000000000000210] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Accepted: 06/30/2023] [Indexed: 07/11/2023]
Abstract
It has been estimated that over a fifth of deaths worldwide can be attributed to dietary risk factors. A particularly serious condition is salt-sensitive (SS) hypertension and renal damage, participants of which demonstrate increased morbidity and mortality. Notably, a large amount of evidence from humans and animals has demonstrated that other components of the diet can also modulate hypertension and associated end-organ damage. Evidence presented in this review provides support for the view that immunity and inflammation serve to amplify the development of SS hypertension and leads to malignant disease accompanied by tissue damage. Interestingly, SS hypertension is modulated by changes in dietary protein intake, which also influences immune mechanisms. Together, the evidence presented in this review from animal and human studies indicates that changes in dietary protein source have profound effects on the gut microbiota, microbiota-derived metabolites, gene expression, immune cell activation, the production of cytokines and other factors, and the development of SS hypertension and kidney damage.
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Affiliation(s)
- David L Mattson
- Department of Physiology, Medical College of Georgia, Augusta University, Augusta, Georgia
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Sterns RH, Rondon-Berrios H, Adrogué HJ, Berl T, Burst V, Cohen DM, Christ-Crain M, Cuesta M, Decaux G, Emmett M, Garrahy A, Gankam-Kengne F, Hix JK, Hoorn EJ, Kamel KS, Madias NE, Peri A, Refardt J, Rosner MH, Sherlock M, Silver SM, Soupart A, Thompson CJ, Verbalis JG. Treatment Guidelines for Hyponatremia: Stay the Course. Clin J Am Soc Nephrol 2023; 19:01277230-990000000-00180. [PMID: 37379081 PMCID: PMC10843202 DOI: 10.2215/cjn.0000000000000244] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Accepted: 06/22/2023] [Indexed: 06/29/2023]
Abstract
International guidelines designed to minimize the risk of complications that can occur when correcting severe hyponatremia have been widely accepted for a decade. On the basis of the results of a recent large retrospective study of patients hospitalized with hyponatremia, it has been suggested that hyponatremia guidelines have gone too far in limiting the rate of rise of the serum sodium concentration; the need for therapeutic caution and frequent monitoring of the serum sodium concentration has been questioned. These assertions are reminiscent of a controversy that began many years ago. After reviewing the history of that controversy, the evidence supporting the guidelines, and the validity of data challenging them, we conclude that current safeguards should not be abandoned. To do so would be akin to discarding your umbrella because you remained dry in a rainstorm. The authors of this review, who represent 20 medical centers in nine countries, have all contributed significantly to the literature on the subject. We urge clinicians to continue to treat severe hyponatremia cautiously and to wait for better evidence before adopting less stringent therapeutic limits.
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Affiliation(s)
- Richard H. Sterns
- University of Rochester School of Medicine and Dentistry, Rochester, New York
- Rochester General Hospital, Rochester, New York
| | | | | | - Tomas Berl
- University of Colorado Aschutz School of Medicine, Aurora, Colorado
| | - Volker Burst
- University of Cologne Faculty of Medicine, Cologne, Germany
| | | | | | | | - Guy Decaux
- Erasmus University Hospital, Brussels, Belgium
| | | | | | | | - John K. Hix
- Rochester General Hospital, Rochester, New York
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Nihlén S, Frithiof R, Titze J, Kawati R, Rasmusson J, Rylander C, Pikwer A, Castegren M, Belin A, Hultström M, Lipcsey M. The Contribution of Plasma Urea to Total Osmolality During Iatrogenic Fluid Reduction in Critically Ill Patients. Function (Oxf) 2021; 3:zqab055. [PMID: 35330925 PMCID: PMC8788870 DOI: 10.1093/function/zqab055] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/20/2021] [Revised: 10/14/2021] [Accepted: 10/27/2021] [Indexed: 01/07/2023]
Abstract
Hyperosmolality is common in critically ill patients during body fluid volume reduction. It is unknown whether this is only a result of decreased total body water or an active osmole-producing mechanism similar to that found in aestivating animals, where muscle degradation increases urea levels to preserve water. We hypothesized that fluid volume reduction in critically ill patients contributes to a shift from ionic to organic osmolytes similar to mechanisms of aestivation. We performed a post-hoc analysis on data from a multicenter observational study in adult intensive care unit (ICU) patients in the postresuscitative phase. Fluid, electrolyte, energy and nitrogen intake, fluid loss, estimated glomerular filtration rate (eGFR), and estimated plasma osmolality (eOSM) were registered. Contributions of osmolytes Na+, K+, urea, and glucose to eOSM expressed as proportions of eOSM were calculated. A total of 241 patients were included. eOSM increased (median change 7.4 mOsm/kg [IQR-1.9-18]) during the study. Sodium's and potassium's proportions of eOSM decreased (P < .05 and P < .01, respectively), whereas urea's proportion increased (P < .001). The urea's proportion of eOSM was higher in patients with negative vs. positive fluid balance. Urea's proportion of eOSM increased with eOSM (r = 0.63; adjusted for eGFR r = 0.80), but not nitrogen intake. In patients without furosemide and/or renal replacement therapy (n = 17), urea's proportion of eOSM and eOSM correlated strongly (r = 0.92). Urea's proportion of eOSM was higher in patients not surviving up to 90 d. In stabilized ICU patients, the contribution of urea to plasma osmolality increased during body water volume reduction, statistically independently of nitrogen administration and eGFR. The shift from ionic osmolytes to urea during body fluid volume reduction is similar to that seen in aestivating animals. ClinicalTrials.org Identifier: NCT03972475.
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Affiliation(s)
| | - Robert Frithiof
- Department of Surgical Sciences, Anesthesiology and Intensive Care, Uppsala University, SE-751 05 Uppsala, Sweden
| | - Jens Titze
- Programme in Cardiovascular and Metabolic Disorders, Duke-NUS Medical School, Singapore 169856, Singapore,Division of Nephrology and Hypertension, Friedrich-Alexander University Erlangen-Nuremberg, 91012 Erlangen, Germany,Division of Nephrology, Duke University Medical Center, Durham, NC 27710, USA
| | - Rafael Kawati
- Department of Surgical Sciences, Anesthesiology and Intensive Care, Uppsala University, SE-751 05 Uppsala, Sweden
| | - Johan Rasmusson
- Department of Anesthesiology and Intensive Care, Gävle County Hospital, SE-801 87 Gävle, Sweden
| | - Christian Rylander
- Department of Anaesthesiology and Intensive Care Medicine, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, SE-413 45 Göteborg, Sweden
| | - Andreas Pikwer
- Centre for Clinical Research Sörmland, Uppsala University, SE-631 88 Eskilstuna, Sweden
| | - Markus Castegren
- Centre for Clinical Research Sörmland, Uppsala University, SE-631 88 Eskilstuna, Sweden,Perioperative Medicine and Intensive Care, Karolinska University Hospital, and FyFa, Karolinska Institutet, SE-171 77 Stockholm, Sweden
| | - Anton Belin
- Department of Surgical Sciences, Anesthesiology and Intensive Care, Uppsala University, SE-751 05 Uppsala, Sweden
| | - Michael Hultström
- Department of Surgical Sciences, Anesthesiology and Intensive Care, Uppsala University, SE-751 05 Uppsala, Sweden,Integrative Physiology, Department of Medical Cell Biology, Uppsala University, SE-751 23 Uppsala, Sweden
| | - Miklos Lipcsey
- Department of Surgical Sciences, Anesthesiology and Intensive Care, Uppsala University, SE-751 05 Uppsala, Sweden,Hedenstierna Laboratory, CIRRUS, Department of Surgical Sciences, Anesthesiology and Intensive Care, Uppsala University, SE-751 05 Uppsala, Sweden, and Akademiska sjukhuset, SE-751 85 Uppsala, Sweden
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Kamińska J, Podgórski T, Rachwalski K, Pawlak M. Does the Minerals Content and Osmolarity of the Fluids Taken during Exercise by Female Field Hockey Players Influence on the Indicators of Water-Electrolyte and Acid-Basic Balance? Nutrients 2021; 13:505. [PMID: 33557019 DOI: 10.3390/nu13020505] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2021] [Revised: 01/27/2021] [Accepted: 02/02/2021] [Indexed: 12/13/2022] Open
Abstract
Although it is recognized that dehydration and acidification of the body may reduce the exercise capacity, it remains unclear whether the qualitative and quantitative shares of certain ions in the drinks used by players during the same exertion may affect the indicators of their water–electrolyte and acid–base balance. This question was the main purpose of the publication. The research was carried out on female field hockey players (n = 14) throughout three specialized training sessions, during which the players received randomly assigned fluids of different osmolarity and minerals contents. The water–electrolyte and acid–base balance of the players was assessed on the basis of biochemical blood and urine indicators immediately before and after each training session. There were statistically significant differences in the values of all examined indicators for changes before and after exercise, while the differences between the consumed drinks with different osmolarities were found for plasma osmolality, and concentrations of sodium and potassium ions and aldosterone. Therefore, it can be assumed that the degree of mineralization of the consumed water did not have a very significant impact on the indicators of water–electrolyte and acid–base balance in blood and urine.
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Silversides JA, McAuley DF, Blackwood B, Fan E, Ferguson AJ, Marshall JC. Fluid management and deresuscitation practices: A survey of critical care physicians. J Intensive Care Soc 2019; 21:111-118. [PMID: 32489406 DOI: 10.1177/1751143719846442] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Accumulation of a positive fluid balance is common in critically ill patients, and is associated with adverse outcomes, including mortality. However, there are few randomised clinical trials to guide clinicians as to the most appropriate fluid strategy following initial resuscitation and on the use of deresuscitation (removal of accumulated fluid using diuretics and/or renal replacement therapy). To inform the design of randomised trials, we surveyed critical care physicians with regard to perceptions of fluid overload in critical care, self-reported practice, acceptability of a variety of approaches to deresuscitation, appropriate safety parameters, and overall acceptability of a randomised trial of deresuscitation. Of 524 critical care specialists completing the survey, the majority practiced in mixed medical/surgical intensive care units in the United Kingdom. Most (309 of 363 respondents, 85%) believed fluid overload to be a modifiable source of morbidity; there was strong support (395 of 457, 86%) for a randomised trial of deresuscitation in critical illness. Marked practice variability was evident among respondents. In a given clinical scenario, self-reported practice ranged from the administration of fluid (N = 59, 14%) to the administration of a diuretic (N = 285, 67%). The majority (95%) considered it appropriate to administer diuretics for fluid overload in the setting of noradrenaline infusion and to continue to administer diuretics despite mild dysnatraemias, hypotension, metabolic alkalosis, and hypokalaemia. The majority of critical care physicians view fluid overload as a common and modifiable source of morbidity; deresuscitation is widely practiced, and there is widespread support for randomised trials of deresuscitation in critical illness.
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Affiliation(s)
- Jonathan A Silversides
- Wellcome-Wolfson Institute for Experimental Medicine, Queen's University Belfast, Belfast, UK.,Department of Critical Care Services, Belfast Health and Social Care Trust, Belfast, UK
| | - Daniel F McAuley
- Wellcome-Wolfson Institute for Experimental Medicine, Queen's University Belfast, Belfast, UK.,Department of Critical Care Services, Belfast Health and Social Care Trust, Belfast, UK
| | - Bronagh Blackwood
- Wellcome-Wolfson Institute for Experimental Medicine, Queen's University Belfast, Belfast, UK
| | - Eddy Fan
- Interdepartmental Division of Critical Care, University of Toronto, Toronto, ON, Canada
| | - Andrew J Ferguson
- Wellcome-Wolfson Institute for Experimental Medicine, Queen's University Belfast, Belfast, UK.,Department of Critical Care Services, Belfast Health and Social Care Trust, Belfast, UK
| | - John C Marshall
- Interdepartmental Division of Critical Care, University of Toronto, Toronto, ON, Canada.,Department of Critical Care Medicine, St Michael's Hospital, Toronto, ON, Canada
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Lacey J, Corbett J, Forni L, Hooper L, Hughes F, Minto G, Moss C, Price S, Whyte G, Woodcock T, Mythen M, Montgomery H. A multidisciplinary consensus on dehydration: definitions, diagnostic methods and clinical implications. Ann Med 2019; 51:232-251. [PMID: 31204514 PMCID: PMC7877883 DOI: 10.1080/07853890.2019.1628352] [Citation(s) in RCA: 55] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/17/2019] [Revised: 03/28/2019] [Accepted: 05/28/2019] [Indexed: 01/02/2023] Open
Abstract
Background: Dehydration appears prevalent, costly and associated with adverse outcomes. We sought to generate consensus on such key issues and elucidate need for further scientific enquiry. Materials and methods: A modified Delphi process combined expert opinion and evidence appraisal. Twelve relevant experts addressed dehydration's definition, objective markers and impact on physiology and outcome. Results: Fifteen consensus statements and seven research recommendations were generated. Key findings, evidenced in detail, were that there is no universally accepted definition for dehydration; hydration assessment is complex and requires combining physiological and laboratory variables; "dehydration" and "hypovolaemia" are incorrectly used interchangeably; abnormal hydration status includes relative and/or absolute abnormalities in body water and serum/plasma osmolality (pOsm); raised pOsm usually indicates dehydration; direct measurement of pOsm is the gold standard for determining dehydration; pOsm >300 and ≤280 mOsm/kg classifies a person as hyper or hypo-osmolar; outside extremes, signs of adult dehydration are subtle and unreliable; dehydration is common in hospitals and care homes and associated with poorer outcomes. Discussion: Dehydration poses risk to public health. Dehydration is under-recognized and poorly managed in hospital and community-based care. Further research is required to improve assessment and management of dehydration and the authors have made recommendations to focus academic endeavours. Key messages Dehydration assessment is a major clinical challenge due to a complex, varying pathophysiology, non-specific clinical presentations and the lack of international consensus on definition and diagnosis. Plasma osmolality represents a valuable, objective surrogate marker of hypertonic dehydration which is underutilized in clinical practice. Dehydration is prevalent within the healthcare setting and in the community, and appears associated with increased morbidity and mortality.
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Affiliation(s)
- Jonathan Lacey
- Institute of Sport Exercise & Health, University College London, London, UK
| | - Jo Corbett
- Department of Sport & Exercise Science, University of Portsmouth, Portsmouth, UK
| | - Lui Forni
- Intensive Care Unit, Royal Surrey County Hospital, Guildford, UK
| | - Lee Hooper
- Norwich Medical School, University of East Anglia, Norwich, UK
| | - Fintan Hughes
- Institute of Sport Exercise & Health, University College London, London, UK
| | - Gary Minto
- Department of Anaesthesia, University Hospitals Plymouth, Plymouth, UK
- Peninsula School of Medicine, Plymouth, UK
| | - Charlotte Moss
- Division of Surgery & Interventional Science, University College London, London, UK
| | - Susanna Price
- Intensive Care Unit, Royal Brompton Hospital, London, UK
| | - Greg Whyte
- Research Institute for Sport & Exercise Science, Liverpool John Moores University, UK
| | - Tom Woodcock
- Formerly Consultant University Hospitals Southampton NHS Trust, Southampton, UK
| | - Michael Mythen
- Institute of Sport Exercise & Health, University College London, London, UK
| | - Hugh Montgomery
- Centre for Human Health and Performance, University College London, London, UK
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Atasever AG, Ozcan PE, Kasali K, Abdullah T, Orhun G, Senturk E. The frequency, risk factors, and complications of gastrointestinal dysfunction during enteral nutrition in critically ill patients. Ther Clin Risk Manag 2018; 14:385-391. [PMID: 29503558 PMCID: PMC5827748 DOI: 10.2147/tcrm.s158492] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND Gastrointestinal (GI) motility disorders in intensive care patients remain relatively unexplored. Nowadays, the frequency, risk factors and complications of GI dysfunction during enteral nutrition (EN) become more questionable. AIM To evaluate the frequency, risk factors and complications of GI dysfunction during EN in the first 2 weeks of the intensive care unit (ICU) stay and to identify precautions to prevent the development of GI dysfunction and avoid complications. METHODS In this prospective observational study, we deliberately targeted at-risk patients. A total of 137 patients who received nasogastric tube feeding in an ICU of a tertiary hospital were enrolled. RESULTS The incidence of GI dysfunction that was found to be 63% which was associated mainly between MDR bacteria positivity and negative fluid balance. Diarrhea was observed in 36 patients (26%) and on 147 patient-days (incidence rate, 5.5 per 100 patient-days). The median day of diarrhea onset was 6 days after the initiation of EN. Forty patients (29%) presented with constipation (85% during the first week). Fifty patients (36%) exhibited upper digestive intolerance on 212 patient-days (incidence rate, 7.9 per 100 patient-days), after a median EN duration of 6 days (range, 2-14 days). Logistic regression analysis revealed MDR bacteria growth in the culture (OR, 1.75; 95% CI, 1.15-2.67; P=0.008) and negative fluid balance (OR, 0.57; 95% CI, 0.34-0.94; P=0.03) as the risk factors for GI dysfunction. We also showed that GI dysfunction was associated with high SOFA score, hypoalbuminemia, catecholamine use, and prolonged length of stay (LOS). GI dysfunction, on the other hand, can cause some complications including inadequate nutrition, and newly developed decubitus ulcers. CONCLUSION GI dysfunction should be considered a clinical predictor of inadequate nutrition and prolonged LOS. In addition, the most dramatic risk for GI dysfunction was observed in patients with MDR bacteria growth in the culture and patients in negative fluid balance. Intensivists provide appropriate nutrition for patients, as well as prompt intervention and the development of treatment strategies in the event of GI dysfunction.
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Affiliation(s)
| | - Perihan Ergin Ozcan
- Anesthesiology and Intensive Care, Istanbul University Hospital, Istanbul, Turkey
| | | | - Taner Abdullah
- Anesthesiology Department, Istanbul University Hospital, Istanbul, Turkey
| | - Gunseli Orhun
- Anesthesiology and Intensive Care, Istanbul University Hospital, Istanbul, Turkey
| | - Evren Senturk
- Anesthesiology and Intensive Care, Koc University Hospital, Istanbul, Turkey
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Tosh P, Rajan S, Kadapamannil D, Joseph N, Kumar L. Efficacy of oral tolvaptan versus 3% hypertonic saline for correction of hyponatraemia in post-operative patients. Indian J Anaesth 2017; 61:996-1001. [PMID: 29307906 PMCID: PMC5752787 DOI: 10.4103/ija.ija_581_17] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Abstract
Background and Aims: Hyponatraemia is frequent in post-operative patients and may be corrected with hypertonic saline (HTS). Oral tolvaptan is used to treat hypervolaemic or euvolaemic hyponatraemia. This study was performed to assess the efficacy of oral tolvaptan in correcting postoperative hyponatraemia compared to HTS. Methods: This prospective, randomised study was conducted in 40 symptomatic patients with serum sodium level ≤130 mEq/L. In Group H (n = 20), 3% HTS was infused at 20–30 mL/h aiming for correction of 6 mEq/L/day. Group T received oral tolvaptan 15 mg on the 1st day. If daily correction was <4 mEq/L, the dose was increased by 15 mg/day to a maximum of 45 mg. The primary outcome was serum sodium concentration 48 hours after starting treatment. Paired t-test was used to compare changes in sodium levels. Results: Baseline sodium and values at 12, 24 and 48 h were comparable in both groups. At 72 h, Group T had significantly higher sodium levels as compared to Group H (133.4 ± 1.9 vs. 131.3 ± 2.4 mEq/L). Intragroup analysis had shown a significant increase in sodium levels from baseline values in both groups at 12, 24, 48 and 72 h. Group H had a significantly lower potassium level and lower negative fluid balance on day 3. Conclusion: Oral tolvaptan and 3% HTS were equally effective in correcting hyponatraemia at 48 hours, but serum sodium levels were higher at 72 hours after oral tolvaptan.
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Affiliation(s)
- Pulak Tosh
- Department of Anaesthesiology, Amrita Institute of Medical Sciences, Amrita University, Kochi, Kerala, India
| | - Sunil Rajan
- Department of Anaesthesiology, Amrita Institute of Medical Sciences, Amrita University, Kochi, Kerala, India
| | - Dilesh Kadapamannil
- Department of Anaesthesiology, Amrita Institute of Medical Sciences, Amrita University, Kochi, Kerala, India
| | - Nandhini Joseph
- Department of Anaesthesiology, Amrita Institute of Medical Sciences, Amrita University, Kochi, Kerala, India
| | - Lakshmi Kumar
- Department of Anaesthesiology, Amrita Institute of Medical Sciences, Amrita University, Kochi, Kerala, India
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