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Wang TC, Tsai YH, Yang JT, Lin MS, Lin YC, Huang TJ, Chen MY. The prevalence of chronic dehydration and associated with cardiometabolic risks among agriculture and aquaculture workers. Front Public Health 2023; 11:1183557. [PMID: 37744492 PMCID: PMC10516687 DOI: 10.3389/fpubh.2023.1183557] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Accepted: 08/22/2023] [Indexed: 09/26/2023] Open
Abstract
Background Chronic dehydration is associated with complications and mortality in acute ischemic stroke patients. Prior literature indicates that farmers and fishery workers are commonly affected by cardiometabolic diseases and there is a need for early prevention of stroke. This study explores the prevalence of dehydration and the association of cardiometabolic risk profiles in agricultural and aquaculture workers. Methods We conducted a community-based, cross-sectional study of agriculture and aquaculture workers in Yunlin County of Taiwan between August 1 and December 31, 2021. Data on demographic characteristics and health-related lifestyles were collected through one-on-one interviews using a questionnaire. The threshold for dehydration is defined as serum osmolality ≥295 mOsm/kg, and physiological biomarkers were collected from a collaborating hospital. Multivariable logistic regression analyses adjusted for demographic characteristics were performed to investigate the association between dehydration levels, cardiometabolic risks, and health-related behaviors. Results A total of 962 Taiwanese agriculture and aquaculture workers who were predominantly women (65%) with a mean age of 64 years (SD = 13.8) were enrolled. The findings showed a high prevalence of dehydration (36%), metabolic syndrome (44.5%), abnormal waist circumference (64.4%), and abnormal blood pressure (68.5%). Multivariate logistic regression demonstrated that dehydration was significantly associated with metabolic syndrome (p < 0.001), 10-year stroke risk prediction (p < 0.001), and an unhealthy lifestyle (p < 0.001). Conclusion The prevalence of chronic dehydration was higher in Taiwanese agriculture and aquaculture workers, which was significantly associated with cardiometabolic risks and unhealthy lifestyles.
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Affiliation(s)
- Ta-Chin Wang
- Department of Neurosurgery, Chang Gung Memorial Hospital, Chiayi, Taiwan
| | - Yuan-Hsiung Tsai
- Department of Radiology, Chang Gung Memorial Hospital, Chiayi, Taiwan
| | - Jen-Tsung Yang
- Department of Neurosurgery, Chang Gung Memorial Hospital, Chiayi, Taiwan
| | - Ming-Shyang Lin
- Department of Cardiology, Chang Gung Memorial Hospital, Chiayi, Taiwan
- Department of Family Medicine, Chang Gung Memorial Hospital, Yunlin, Taiwan
| | - Yu-Chih Lin
- Department of Pulmonary and Critical Care, Chang Gung Memorial Hospital, Yunlin, Taiwan
| | - Tung-Jung Huang
- Department of Family Medicine, Chang Gung Memorial Hospital, Yunlin, Taiwan
- Department of Nursing, Chang Gung University of Science and Technology, Chiayi, Taiwan
| | - Mei-Yen Chen
- Department of Cardiology, Chang Gung Memorial Hospital, Chiayi, Taiwan
- Department of Family Medicine, Chang Gung Memorial Hospital, Yunlin, Taiwan
- School of Nursing, Chang Gung University, Taoyuan, Taiwan
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Liontos A, Samanidou V, Athanasiou L, Filippas-Ntekouan S, Milionis C. Acute Ethanol Intoxication: Αn Overlooked Cause of High Anion Gap Metabolic Acidosis With a Marked Increase in Serum Osmolal Gap. Cureus 2023; 15:e37292. [PMID: 37168210 PMCID: PMC10166247 DOI: 10.7759/cureus.37292] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/08/2023] [Indexed: 05/13/2023] Open
Abstract
Measurement of serum osmolal gap is a useful tool in suspected toxic alcohol ingestion. Normal levels of osmolal gap are typically <10 mOsm/kg). Osmolal gap >20 mOsm/kg is usually caused by ingestion of methanol, ethylene glycol, isopropanol, propylene glycol, diethylene glycol, or organic solvents such as acetone but rarely of ethanol alone. Herein, we describe the case of a severe ethanol intoxication presenting with a marked increase in the osmolal gap. An 18-year-old male was referred to the emergency department of our hospital, in a comatose state, following binge drinking. blood gas analysis revealed a high anion gap metabolic acidosis. In addition, it was found an extremely elevated osmolal gap of 91 mOsm/kg. The increment of the osmolal gap and the high anion gap acidosis could not be attributed to methanol/ethylene glycol intoxication, alcoholic ketoacidosis, or other cause of acidosis. The calculated osmolal concentration of ethanol was 91 mOsm/kg (osmolal concentration of ethanol is equal to the serum ethanol levels (mg/dL) divided by 3.7). Thus, the increase in the osmolal gap was a result of ethanol intoxication solely. Acute, isolated, ethanol intoxication may be a rare cause of a marked increase of osmolal gap with high anion gap metabolic acidosis. Clinicians should be alerted to the possibility of acute ethanol intoxication in a patient presenting with high anion gap metabolic acidosis and an extremely elevated osmolal gap. Toxicologic screen tests should be performed to identify the aetiology of the gap rise and proper therapy should be administered.
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Affiliation(s)
- Angelos Liontos
- 1st Department of Internal Medicine, University Hospital of Ioannina, Faculty of Medicine, University of Ioannina, Ioannina, GRC
| | - Valentini Samanidou
- 1st Department of Internal Medicine, University Hospital of Ioannina, Faculty of Medicine, University of Ioannina, Ioannina, GRC
| | - Lazaros Athanasiou
- 1st Department of Internal Medicine, University Hospital of Ioannina, Faculty of Medicine, University of Ioannina, Ioannina, GRC
| | - Sebastien Filippas-Ntekouan
- 1st Department of Internal Medicine, University Hospital of Ioannina, Faculty of Medicine, University of Ioannina, Ioannina, GRC
| | - Charalambos Milionis
- 1st Department of Internal Medicine, University Hospital of Ioannina, Faculty of Medicine, University of Ioannina, Ioannina, GRC
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Yang J, Cheng Y, Wang R, Wang B. Association Between Serum Osmolality and Acute Kidney Injury in Critically Ill Patients: A Retrospective Cohort Study. Front Med (Lausanne) 2021; 8:745803. [PMID: 34722583 PMCID: PMC8553934 DOI: 10.3389/fmed.2021.745803] [Citation(s) in RCA: 1] [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] [Received: 07/22/2021] [Accepted: 09/21/2021] [Indexed: 02/05/2023] Open
Abstract
Purposes: Acute kidney injury (AKI) is a common complication in critically ill patients and is usually associated with poor outcomes. Serum osmolality has been validated in predicting critically ill patient mortality. However, data about the association between serum osmolality and AKI is still lacking in ICU. Therefore, the purpose of the present study was to investigate the association between early serum osmolality and the development of AKI in critically ill patients. Methods: The present study was a retrospective cohort analysis based on the medical information mart for intensive care III (MIMIC-III) database. 20,160 patients were involved in this study and divided into six subgroups according to causes for ICU admission. The primary outcome was the incidence of AKI after ICU admission. The association between early serum osmolality and AKI was explored using univariate and multivariate logistic regression analyses. Results: The normal range of serum osmolality was 285–300 mmol/L. High serum osmolality was defined as serum osmolality >300 mmol/L and low serum osmolality was defined as serum osmolality <285 mmol/L. Multivariate logistic regression indicated that high serum osmolality was independently associated with increased development of AKI with OR = 1.198 (95% CL = 1.199–1.479, P < 0.001) and low serum osmolality was also independently associated with increased development of AKI with OR = 1.332 (95% CL = 1.199–1.479, P < 0.001), compared with normal serum osmolality, respectively. Conclusions: In critically ill patients, early high serum osmolality and low serum osmolality were both independently associated with an increased risk of development of AKI.
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Affiliation(s)
- Jie Yang
- Department of Critical Care Medicine, West China Hospital, Sichuan University, Chengdu, China
| | - Yisong Cheng
- Department of Critical Care Medicine, West China Hospital, Sichuan University, Chengdu, China
| | - Ruoran Wang
- Department of Critical Care Medicine, West China Hospital, Sichuan University, Chengdu, China
| | - Bo Wang
- Department of Critical Care Medicine, West China Hospital, Sichuan University, Chengdu, China
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Nagae M, Umegaki H, Onishi J, Huang CH, Yamada Y, Watanabe K, Komiya H, Kuzuya M. Chronic Dehydration in Nursing Home Residents. Nutrients 2020; 12:E3562. [PMID: 33233662 DOI: 10.3390/nu12113562] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Revised: 11/16/2020] [Accepted: 11/18/2020] [Indexed: 01/12/2023] Open
Abstract
Chronic dehydration mainly occurs due to insufficient fluid intake over a lengthy period of time, and nursing home residents are thought to be at high risk for chronic dehydration. However, few studies have investigated chronic dehydration, and new diagnostic methods are needed. Therefore, in this study, we aimed to identify risk factors for chronic dehydration by measuring serum osmolality in nursing home residents and also to evaluate whether examining the inferior vena cava (IVC) and determining the IVC collapsibility index (IVC-CI) by ultrasound can be helpful in the diagnosis of chronic dehydration. A total of 108 Japanese nursing home residents aged ≥65 years were recruited. IVC measurement was performed using a portable handheld ultrasound device. Fifteen residents (16.9%) were classified as having chronic dehydration (serum osmolality ≥295 mOsm/kg). Multivariate logistic regression analysis showed that chronic dehydration was associated with dementia (odds ratio (OR), 6.290; 95% confidential interval (CI), 1.270–31.154) and higher BMI (OR, 1.471; 95% CI, 1.105–1.958) but not with IVC or IVC-CI. Cognitive function and body weight of residents should be considered when establishing a strategy for preventing chronic dehydration in nursing homes.
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Burckhardt MA, Gotta V, Beglinger S, Renggli L, Bachmann S, Hess M, Rentsch K, Pfister M, Koch G, Davis EA, Zumsteg U, Jones TW, Szinnai G. Copeptin Kinetics and Its Relationship to Osmolality During Rehydration for Diabetic Ketoacidosis in Children. J Clin Endocrinol Metab 2020; 105:5896600. [PMID: 32835363 DOI: 10.1210/clinem/dgaa568] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Accepted: 08/17/2020] [Indexed: 12/13/2022]
Abstract
CONTEXT Copeptin is a surrogate marker for arginine vasopressin (AVP) release in response to hyperosmolal stimuli such as diabetic ketoacidosis (DKA). OBJECTIVE The objective of this work is to characterize kinetics of copeptin and osmolality, and their dynamic relationship during rehydration and insulin therapy in children with type 1 diabetes (T1D) and DKA. DESIGN AND SETTING A prospective, observational, multicenter study was conducted. PATIENTS AND INTERVENTION Children with T1D admitted for DKA underwent serial serum copeptin and osmolality measurements from start of rehydration at 14 time points during 72 hours. MAIN OUTCOME MEASURES Measurements included temporal course of copeptin and osmolality (kinetics), relationship between both (dynamics), and association between-subject variability (BSV) (coefficient of variation, CV%). RESULTS Twenty-eight children (20 newly diagnosed T1D) aged 1 to 16 years were included. Copeptin decreased from 95 pmol/L (95% CI, 55-136 pmol/L) (CV%, 158%) to 9.7 pmol/L (95% CI, 8.1-11.4 pmol/L) (CV%, 31%) with a 50% recovery time (t1/2) of 7.1 hours (range, 5.1-11.5 hours) (114%). Serum osmolality decreased from 321 mOsm/kg (range, 315-327 mOsm/kg) (4%) to 294 mOsm/kg (range, 292-296 mOsm/kg) (1%) with a t1/2 of 4.3 hours (range, 3.0-5.6 hours) (64%). Copeptin levels doubled with each osmolality increase by 15 mOsm/kg (range, 10-21 mOsm/kg) (59%), from 9.8 pmol/L (range, 7.3-12.3 pmol/L) (48%) to 280 mOsm/kg. Copeptin kinetics differed between newly diagnosed and known T1D patients (P = .001), and less between mild vs moderate-severe DKA (P = .04). CONCLUSIONS First, this study characterized for the first time copeptin kinetics and dynamics in the high hyperosmolar range in children with DKA. Second, it revealed significant differences in copeptin kinetics between newly diagnosed and known T1D patients that may be explained by changes at the osmoreceptor and renal AVP receptor level due to longstanding osmotic diuresis and DKA.
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Affiliation(s)
- Marie-Anne Burckhardt
- Pediatric Endocrinology and Diabetology, University Children's Hospital Basel UKBB, University of Basel, Basel, Switzerland
- Children's Diabetes Centre, Telethon Kids Institute, University of Western Australia, Australia and Perth Children's Hospital, Perth, WA, Australia
| | - Verena Gotta
- Pediatric Pharmacology and Pharmacometrics, University Children's Hospital Basel UKBB, University of Basel, Basel, Switzerland
| | - Svetlana Beglinger
- Pediatric Emergency Department, University Children's Hospital Basel UKBB, University of Basel, Basel, Switzerland
| | - Luzia Renggli
- Pediatric Pharmacology and Pharmacometrics, University Children's Hospital Basel UKBB, University of Basel, Basel, Switzerland
| | - Sara Bachmann
- Pediatric Endocrinology and Diabetology, University Children's Hospital Basel UKBB, University of Basel, Basel, Switzerland
| | - Melanie Hess
- Pediatric Endocrinology and Diabetology, University Children's Hospital Basel UKBB, University of Basel, Basel, Switzerland
| | - Katharina Rentsch
- Department of Laboratory Medicine, University Hospital Basel, University of Basel, Basel, Switzerland
| | - Marc Pfister
- Pediatric Pharmacology and Pharmacometrics, University Children's Hospital Basel UKBB, University of Basel, Basel, Switzerland
- Department of Clinical Research, University Hospital Basel, University of Basel, Basel, Switzerland
| | - Gilbert Koch
- Pediatric Pharmacology and Pharmacometrics, University Children's Hospital Basel UKBB, University of Basel, Basel, Switzerland
| | - Elizabeth A Davis
- Children's Diabetes Centre, Telethon Kids Institute, University of Western Australia, Australia and Perth Children's Hospital, Perth, WA, Australia
| | - Urs Zumsteg
- Pediatric Endocrinology and Diabetology, University Children's Hospital Basel UKBB, University of Basel, Basel, Switzerland
| | - Timothy W Jones
- Children's Diabetes Centre, Telethon Kids Institute, University of Western Australia, Australia and Perth Children's Hospital, Perth, WA, Australia
| | - Gabor Szinnai
- Pediatric Endocrinology and Diabetology, University Children's Hospital Basel UKBB, University of Basel, Basel, Switzerland
- Department of Clinical Research, University Hospital Basel, University of Basel, Basel, Switzerland
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Gonsalves R, Aleck K, Newbern D, Shaibi G, Kapadia C, Oatman O. Severe early onset obesity and hypopituitarism in a child with a novel SIM1 gene mutation. Endocrinol Diabetes Metab Case Rep 2020; 2020:EDM200042. [PMID: 33434169 PMCID: PMC7576654 DOI: 10.1530/edm-20-0042] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Accepted: 08/11/2020] [Indexed: 11/08/2022] Open
Abstract
SUMMARY Single-minded homolog 1 (SIM1) is a transcription factor that plays a role in the development of both the hypothalamus and pituitary. SIM1 gene mutations are known to cause obesity in humans, and chromosomal deletions encompassing SIM1 and other genes necessary for pituitary development can cause a Prader-Willi-like syndrome with obesity and hypopituitarism. There have been no reported cases of hypopituitarism linked to a single SIM1 mutation. A 21-month-old male presented to endocrinology clinic with excessive weight gain and severe obesity. History was also notable for excessive drinking and urination. Endocrine workup revealed central hypothyroidism, partial diabetes insipidus, and central adrenal insufficiency. Genetic evaluation revealed a novel mutation in the SIM1 gene. No other genetic abnormalities to account for his obesity and hypopituitarism were identified. While we cannot definitively state this mutation is pathogenic, it is notable that SIM1 plays a role in the development of all three of the patient's affected hormone axes. He is now 6 years old and remains on treatment for his pituitary hormone deficiencies and continues to exhibit excessive weight gain despite lifestyle interventions. LEARNING POINTS Mutations in SIM1 are a well-recognized cause of monogenic human obesity, and there have been case reports of Prader-Willi-like syndrome and hypopituitarism in patients with chromosomal deletions that contain the SIM1 gene. SIM1 is expressed during the development of the hypothalamus, specifically in neuroendocrine lineages that give rise to the hormones oxytocin, arginine vasopressin, thyrotropin-releasing hormone, corticotropin-releasing hormone, and somatostatin. Pituitary testing should be considered in patients with severe obesity and a known genetic abnormality affecting the SIM1 gene, particularly in the pediatric population.
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Affiliation(s)
- Rob Gonsalves
- Division of Endocrinology, Phoenix Children’s Hospital, Phoenix, Arizona, USA
| | - Kirk Aleck
- Division of Genetics, Phoenix Children’s Hospital, Phoenix, Arizona, USA
| | - Dorothee Newbern
- Division of Endocrinology, Phoenix Children’s Hospital, Phoenix, Arizona, USA
| | - Gabriel Shaibi
- Division of Endocrinology, Phoenix Children’s Hospital, Phoenix, Arizona, USA
| | - Chirag Kapadia
- Division of Endocrinology, Phoenix Children’s Hospital, Phoenix, Arizona, USA
| | - Oliver Oatman
- Division of Endocrinology, Phoenix Children’s Hospital, Phoenix, Arizona, USA
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Abstract
The following fictional case is intended as a learning tool within the Pathology
Competencies for Medical Education (PCME), a set of national standards for teaching
pathology. These are divided into three basic competencies: Disease Mechanisms and
Processes, Organ System Pathology, and Diagnostic Medicine and Therapeutic Pathology.
For additional information, and a full list of learning objectives for all three
competencies, seehttp://journals.sagepub.com/doi/10.1177/2374289517715040.1
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Affiliation(s)
- Matthew D Krasowski
- Department of Pathology, University of Iowa Hospitals and Clinics, Iowa City, IA, USA
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Dey A, Adinarayanan S, Bidkar PU, Bangera RK, Balasubramaniyan V. Comparison of normal saline and balanced crystalloid (plasmalyte) in patients undergoing elective craniotomy for supratentorial brain tumors: A randomized controlled trial. Neurol India 2019; 66:1338-1344. [PMID: 30233000 DOI: 10.4103/0028-3886.241347] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [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: 11/04/2022]
Abstract
Background The choice of fluid is important in neurosurgical patients, who may be dehydrated due to the administration of diuretics in order to reduce cerebral edema. Normal saline, the infused fluid routinely used in neurosurgical patients, can cause hyperchloremic metabolic acidosis. A balanced crystalloid (BC) may help to maintain the metabolic status more favorably in these patients, without adversely affecting brain relaxation. Methods We conducted a prospective, randomized controlled trial on patients undergoing elective craniotomy for supratentorial tumor resection under general anesthesia. 44 patients were randomly allocated into two groups of 22 each to receive either normal saline or BC (Plasmalyte) as the maintenance fluid, intra-operatively. The metabolic parameters and osmolality were measured at regular intervals. Brain relaxation score was assessed by the operating surgeon. The patients were monitored with serum neutrophil gelatinase-associated lipocalin (NGAL), blood urea and serum creatinine for assessing the degree of acute kidney injury. Results The metabolic profile was better maintained with the BC. The brain relaxation score was comparable between the two groups. The postoperative NGAL, urea and creatinine values were significantly higher in the normal saline group compared to the BC group. Conclusion The balanced crystalloid maintains metabolic status more favorably than normal saline in neurosurgical patients. Hyperchloremic metabolic acidosis, and the other problems which occur as a consequence of normal saline infusion may be circumvented by choosing a balanced crystalloid electrolyte solution. Neither of the crystalloids appeared to have any adverse effect on brain relaxation.
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Affiliation(s)
- Ankita Dey
- Department of Anaesthesiology and Critical Care, Jawaharlal Institute of Postgraduate Medical Education and Research, Pondicherry, India
| | - S Adinarayanan
- Department of Anaesthesiology and Critical Care, Jawaharlal Institute of Postgraduate Medical Education and Research, Pondicherry, India
| | - Prasanna Udupi Bidkar
- Department of Anaesthesiology and Critical Care, Jawaharlal Institute of Postgraduate Medical Education and Research, Pondicherry, India
| | - Rakesh K Bangera
- Department of Anaesthesiology and Critical Care, Jawaharlal Institute of Postgraduate Medical Education and Research, Pondicherry, India
| | - V Balasubramaniyan
- Department of Biochemistry, Jawaharlal Institute of Postgraduate Medical Education and Research, Pondicherry, India
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Sanz-Sapera E, Sarria-Estrada S, Arikan F, Biagetti B. Acromegaly remission, SIADH and pituitary function recovery after macroadenoma apoplexy. Endocrinol Diabetes Metab Case Rep 2019; 2019:19-0057. [PMID: 31310082 PMCID: PMC8115412 DOI: 10.1530/edm-19-0057] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2019] [Accepted: 06/26/2019] [Indexed: 11/08/2022] Open
Abstract
Summary Pituitary apoplexy is a rare but potentially life-threatening clinical syndrome characterised by ischaemic infarction or haemorrhage into a pituitary tumour that can lead to spontaneous remission of hormonal hypersecretion. We report the case of a 50-year-old man who attended the emergency department for sudden onset of headache. A computed tomography (CT) scan at admission revealed pituitary haemorrhage and the blood test confirmed the clinical suspicion of acromegaly and an associated hypopituitarism. The T1-weighted magnetic resonance imaging (MRI) showed the classic pituitary ring sign on the right side of the pituitary. Following admission, he developed acute-onset hyponatraemia that required hypertonic saline administration, improving progressively. Surprisingly, during the follow-up, IGF1 levels became normal and he progressively recovered pituitary function. Learning Points Patients with pituitary apoplexy may have spontaneous remission of hormonal hypersecretion. If it is not an emergency, we should delay a decision to undertake surgery following apoplexy and re-evaluate hormone secretion. Hyponatraemia is an acute sign of hypocortisolism in pituitary apoplexy. However, SIADH although uncommon, could appear later as a consequence of direct hypothalamic insult and requires active and individualised treatment. For this reason, closely monitoring sodium at the beginning of the episode and throughout the first week is advisable to guard against SIADH. Despite being less frequent, if pituitary apoplexy is limited to the tumour, the patient can recover pituitary function previously damaged by the undiagnosed macroadenoma.
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Affiliation(s)
- E Sanz-Sapera
- Endocrinology, Vall d’Hebron Hospital, Barcelona, Spain
| | | | - F Arikan
- Neurosurgery, Vall d’Hebron Hospital, Barcelona, Spain
| | - B Biagetti
- Endocrinology, Vall d’Hebron Hospital, Barcelona, Spain
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Tucker MA, Butts CL, Satterfield AZ, Six A, Johnson EC, Ganio MS. Spot Sample Urine Specific Gravity Does Not Accurately Represent Small Decreases in Plasma Volume in Resting Healthy Males. J Am Coll Nutr 2017; 37:17-23. [PMID: 28985131 DOI: 10.1080/07315724.2017.1323692] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
BACKGROUND Urine specific gravity (USG) is often used to assess hydration status, particularly around athletic competition, but it is unknown whether high USG is indicative of plasma volume (PV) reduction (i.e., hypohydration). We tested the hypothesis that if high USG is reflective of reduced PV, subsequent fluid ingestion would increase PV. PURPOSE The purpose of this study was to examine 24-hour changes in USG and PV in individuals presenting with high and low spot USG. METHODS Nineteen healthy males were provided food and water over 24 hours with a total water volume of 35 ml·kg-1 body mass. Absolute PV and blood volume (BV), measured using the CO-rebreathe technique, along with USG were measured before and after a 24-hour intervention period. Based on a preintervention morning spot USG, subjects were post hoc assigned to groups according to USG (≤1.020 or >1.020; low and high USG, respectively). RESULTS Despite presenting with an elevated spot USG (1.026 ± 0.004), subsequent fluid ingestion over 24 hours did not lead to changes (∆) in PV (-75 ± 234 ml) or BV (-156 ± 370 ml) in the high USG group (p > 0.05). However, a spot USG after the 24-hour intervention in this group decreased (p = 0.018) to a level indicating improved hydration status (1.017 ± 0.007). In the low USG group, there were no changes in PV (-39 ± 274 ml), BV (-82 ± 396 ml), or USG (0.003 ± 0.007) over the 24-hour fluid intervention (all p > 0.05). CONCLUSIONS Despite a high preintervention USG and subsequent decrease after 24-hour fluid intake, measures of PV and BV were not indicative of this seemingly improved hydration status. This suggests that a highly concentrated spot sample USG and subsequent changes are not accurately representative of PV or BV.
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Affiliation(s)
- Matthew A Tucker
- a Department of Health , Human Performance, and Recreation, University of Arkansas , Fayetteville , Arkansas , USA.,b Georgia Prevention Institute, Augusta University , Augusta , Georgia , USA
| | - Cory L Butts
- a Department of Health , Human Performance, and Recreation, University of Arkansas , Fayetteville , Arkansas , USA
| | - Alf Z Satterfield
- a Department of Health , Human Performance, and Recreation, University of Arkansas , Fayetteville , Arkansas , USA
| | - Ashley Six
- a Department of Health , Human Performance, and Recreation, University of Arkansas , Fayetteville , Arkansas , USA
| | - Evan C Johnson
- a Department of Health , Human Performance, and Recreation, University of Arkansas , Fayetteville , Arkansas , USA.,c Division of Kinesiology and Health , University of Wyoming , Laramie , Wyoming , USA
| | - Matthew S Ganio
- a Department of Health , Human Performance, and Recreation, University of Arkansas , Fayetteville , Arkansas , USA
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