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Stöhr EJ. The healthy heart does not control a specific cardiac output: a plea for a new interpretation of normal cardiac function. Am J Physiol Heart Circ Physiol 2022; 323:H1239-H1243. [PMID: 36269649 DOI: 10.1152/ajpheart.00535.2022] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The current evidence suggests that the healthy heart does not sense the optimal cardiac output (Q̇) because the different organ systems that influence cardiac function do not interact to adjust their individual responses toward a specific Q̇. Consequently, it is conceivable that the complex cycle of cardiac contraction and relaxation must occur for reasons other than to produce a specific target Q̇ and that there is likely a yet undiscovered overarching principle in the cardiovascular system that explains the combined effects of the prevailing preload, afterload, and contractility. Future research should embrace the possibility of a different purpose to cardiac function than previously assumed and examine the biological capacity of this fascinating organ accordingly.
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Affiliation(s)
- Eric J Stöhr
- COR-HELIX (CardiOvascular Regulation and Human Exercise Laboratory - Integration and Xploration), Leibniz University Hannover, Hannover, Germany
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Langer T, D'Oria V, Spolidoro GCI, Chidini G, Scalia Catenacci S, Marchesi T, Guerrini M, Cislaghi A, Agostoni C, Pesenti A, Calderini E. Fluid therapy in mechanically ventilated critically ill children: the sodium, chloride and water burden of fluid creep. BMC Pediatr 2020; 20:424. [PMID: 32891127 PMCID: PMC7487923 DOI: 10.1186/s12887-020-02322-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/19/2020] [Accepted: 08/25/2020] [Indexed: 12/15/2022] Open
Abstract
Background Fluid therapy is a cornerstone of pediatric intensive care medicine. We aimed at quantifying the load of water, sodium and chloride due to different fluid indications in our pediatric intensive care unit (PICU). We were particularly interested in the role of fluid creep, i.e. fluid administered mainly as the vehicle for drugs, and the association between sodium load and water balance. Methods Critically ill children aged ≤3 years and invasively ventilated for ≥48 h between 2016 and 2019 in a single tertiary center PICU were retrospectively enrolled. Need for renal replacement therapy, plasmapheresis or parenteral nutrition constituted exclusion criteria. Quantity, quality and indication of fluids administered intravenously or enterally, urinary output and fluid balance were recorded for the first 48 h following intubation. Concentrations of sodium and chloride provided by the manufacturers were used to compute the electrolyte load. Results Forty-three patients (median 7 months (IQR 3–15)) were enrolled. Patients received 1004 ± 284 ml of water daily (153 ± 36 ml/kg/day), mainly due to enteral (39%), creep (34%) and maintenance (24%) fluids. Patients received 14.4 ± 4.8 mEq/kg/day of sodium and 13.6 ± 4.7 mEq/kg/day of chloride, respectively. The majority of sodium and chloride derived from fluid creep (56 and 58%). Daily fluid balance was 417 ± 221 ml (64 ± 30 ml/kg/day) and was associated with total sodium intake (r2 = 0.49, p < 0.001). Conclusions Critically ill children are exposed, especially in the acute phase, to extremely high loads of water, sodium and chloride, possibly contributing to edema development. Fluid creep is quantitatively the most relevant fluid in the PICU and future research efforts should address this topic in order to reduce the inadvertent water and electrolyte burden and improve the quality of care of critically ill children.
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Affiliation(s)
- Thomas Langer
- Department of Medicine and Surgery, University of Milan-Bicocca, Milan, Italy. .,Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Anestesia e Terapia Intensiva Donna-Bambino, Milan, Italy. .,Department of Pathophysiology and Transplantation, University of Milan, Milan, Italy.
| | - Veronica D'Oria
- Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Anestesia e Terapia Intensiva Donna-Bambino, Milan, Italy
| | - Giulia C I Spolidoro
- Department of Clinical Sciences and Community Health, University of Milan, 20122, Milan, Italy
| | - Giovanna Chidini
- Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Anestesia e Terapia Intensiva Donna-Bambino, Milan, Italy
| | - Stefano Scalia Catenacci
- Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Anestesia e Terapia Intensiva Donna-Bambino, Milan, Italy
| | - Tiziana Marchesi
- Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Anestesia e Terapia Intensiva Donna-Bambino, Milan, Italy
| | - Marta Guerrini
- Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Anestesia e Terapia Intensiva Donna-Bambino, Milan, Italy
| | - Andrea Cislaghi
- Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Anestesia e Terapia Intensiva Donna-Bambino, Milan, Italy
| | - Carlo Agostoni
- Department of Clinical Sciences and Community Health, University of Milan, 20122, Milan, Italy.,Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Pediatric Intermediate Care Unit, 20122, Milan, Italy
| | - Antonio Pesenti
- Department of Pathophysiology and Transplantation, University of Milan, Milan, Italy.,Department of Anesthesia, Critical Care and Emergency, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Edoardo Calderini
- Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Anestesia e Terapia Intensiva Donna-Bambino, Milan, Italy
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Hawkins WA, Smith SE, Newsome AS, Carr JR, Bland CM, Branan TN. Fluid Stewardship During Critical Illness: A Call to Action. J Pharm Pract 2019; 33:863-873. [PMID: 31256705 PMCID: PMC7675763 DOI: 10.1177/0897190019853979] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Intravenous fluids (IVFs) are the most common drugs administered in the intensive care unit. Despite the ubiquitous use, IVFs are not benign and carry significant risks associated with under- or overadministration. Hypovolemia is associated with decreased organ perfusion, ischemia, and multi-organ failure. Hypervolemia and volume overload are associated with organ dysfunction, delayed liberation from mechanical ventilation, and increased mortality. Despite appropriate provision of IVF, adverse drug effects such as electrolyte abnormalities and acid-base disturbances may occur. The management of volume status in critically ill patients is both dynamic and tenuous, a process that requires frequent monitoring and high clinical acumen. Because patient-specific considerations for fluid therapy evolve across the continuum of critical illness, a standard approach to the assessment of fluid needs and prescription of IVF therapy is necessary. We propose the principle of "fluid stewardship," guided by 4 rights of medication safety: right patient, right drug, right route, and right dose. The successful implementation of fluid stewardship will aid pharmacists in making decisions regarding IVF therapy to optimize hemodynamic management and improve patient outcomes. Additionally, we highlight several areas of focus for future research, guided by the 4 rights construct of fluid stewardship.
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Affiliation(s)
- W Anthony Hawkins
- Department of Clinical and Administrative Pharmacy, University of Georgia College of Pharmacy, Albany, GA, USA.,Department of Pharmacology and Toxicology, Medical College of Georgia at Augusta University, Albany, GA, USA
| | - Susan E Smith
- Department of Clinical and Administrative Pharmacy, University of Georgia College of Pharmacy, Athens, GA, USA
| | - Andrea Sikora Newsome
- Department of Clinical and Administrative Pharmacy, University of Georgia College of Pharmacy, Augusta, GA, USA.,Department of Pharmacy, Augusta University Medical Center, Augusta, GA, USA
| | - John R Carr
- Department of Pharmacy, St Joseph's/Candler Health System, Savannah, GA, USA
| | - Christopher M Bland
- Department of Pharmacy, St Joseph's/Candler Health System, Savannah, GA, USA.,Department of Clinical and Administrative Pharmacy, University of Georgia College of Pharmacy, Savannah, GA, USA
| | - Trisha N Branan
- Department of Clinical and Administrative Pharmacy, University of Georgia College of Pharmacy, Athens, GA, USA
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Intravenous maintenance fluid tonicity and hyponatremia after major surgery- a cohort study. Int J Surg 2019; 67:1-7. [PMID: 31075533 DOI: 10.1016/j.ijsu.2019.04.019] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2019] [Accepted: 04/30/2019] [Indexed: 11/21/2022]
Abstract
BACKGROUND Intravenous maintenance fluid (IMF) tonicity and composition influence plasma electrolyte balance. OBJECTIVE To determine if hypotonic IMF therapy contributes to post-surgical hyponatremia. SETTING Single-center tertiary institution. PARTICIPANTS Adults who underwent major surgery and received peri-surgical IMF, with exclusive administration of hypotonic pre-mixed 0.33% saline, 5% dextrose and potassium chloride (DK0.33%S), or isotonic 0.9% saline with or without 5% dextrose (NS/DNS). OUTCOMES AND MEASURES We examined post-surgical hyponatremia, hypokalemia and acute kidney injury (AKI), associated with use of either IMF. RESULTS We studied 659 patients, of whom 161 patients (24%) developed post-surgical hyponatremia. DK0.33%S (versus NS/DNS) IMF was administered in 52% of patients who developed hyponatremia, compared to 38% of patients with stable natremia (p = 0.001). More patients with hyponatremia underwent gastrointestinal-hepatobiliary or abdominal (GI/HBS/Abd) surgery versus other surgical-sites (p = 0.001). Hypokalemia developed in 1% versus 10% of patients who received DK0.33%S and NS/DNS IMF respectively (p< 0.001), with corresponding AKI rates of 3% versus 7% (p = 0.02). On multivariate analysis, adjusted for timing of biochemistry post-surgery, IMF infusion rate and volume; independent factors associated with post-surgical hyponatremia included DK0.33%S administration, GI/HBS/Abd surgery (versus other sites), and post-surgical AKI (p < 0.05). Subgroup analysis by surgical sites showed that association of DK0.33%S administration with hyponatremia was most evident in GI/HBS/Abd surgery. CONCLUSIONS Administration of DK0.33%S IMF, compared with NS/DNS, is associated with post-surgical hyponatremia in adults after major surgery, but with less hypokalemia. The higher rate of AKI observed with NS/DNS IMF requires further evaluation.
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Park SW, Shin SM, Jeong M, Cho DH, Lee KH, Eisenhut M, Kronbichler A, Moritz M, Il Shin J. Hyponatremia in children with respiratory infections: a cross-sectional analysis of a cohort of 3938 patients. Sci Rep 2018; 8:16494. [PMID: 30405154 PMCID: PMC6220324 DOI: 10.1038/s41598-018-34703-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2017] [Accepted: 10/11/2018] [Indexed: 11/30/2022] Open
Abstract
Hyponatremia can be a life-threatening illness among hospitalized children. The aims of this study were to evaluate the incidence and risk factors of hyponatremia in 3938 children who were admitted to the Cheil General Hospital and Women’s Health Care Center with respiratory infections. Clinical data were collected, and multiplex RT-PCR analyses were done for various microorganisms. Hyponatremia was observed in 531 (13.5%) patients. The incidence of hyponatremia differed according to the respiratory tract infection (P < 0.0001) and microorganism (P = 0.001). In children with hyponatremia, the age at admission was significantly older (P < 0.0001), male gender was more frequent (P = 0.019), CRP was higher (P < 0.0001), and coinfection with multiple organisms was more common (P = 0.001) than in children without hyponatremia. In multivariate analyses, an older age at admission (P = 0.006), male gender (P = 0.004), and increased CRP (P < 0.0001) were independent risk factors. Sodium levels correlated negatively with WBC (P = 0.037), CRP (P < 0.0001), and number of hospital days (P = 0.020). The AUC values of age (0.586, P < 0.0001), CRP (0.599, P < 0.0001), and blood urea nitrogen (0.559, P < 0.0001) were all significant predictors of hyponatremia. This study is the first to show that the incidence of hyponatremia differs according to infecting microorganism and radiological findings.
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Affiliation(s)
- Sung Won Park
- Department of Pediatrics, Dankook University College of Medicine, Cheil General Hospital & Woman's Health Care Center, Seoul, Korea
| | - Son Moon Shin
- Department of Pediatrics, Dankook University College of Medicine, Cheil General Hospital & Woman's Health Care Center, Seoul, Korea
| | - Moonsun Jeong
- Department of Pediatrics, Dankook University College of Medicine, Cheil General Hospital & Woman's Health Care Center, Seoul, Korea
| | - Dong-Hee Cho
- Department of Laboratory Medicine, Dankook University College of Medicine, Cheil General Hospital & Woman's Health Care Center, Seoul, Korea
| | - Keum Hwa Lee
- Department of Pediatrics, Yonsei University College of Medicine, Seoul, Korea
| | - Michael Eisenhut
- Luton & Dunstable University Hospital NHS Foundation Trust, Luton, United Kingdom
| | - Andreas Kronbichler
- Medical University Innsbruck, Department of Internal Medicine IV (Nephrology and Hypertension), Innsbruck, Austria
| | - Michael Moritz
- Department of Pediatrics, Children's Hospital of Pittsburgh of UPMC, The University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Jae Il Shin
- Department of Pediatrics, Yonsei University College of Medicine, Seoul, Korea. .,Department of Pediatric Nephrology, Institute of Kidney Disease Research, Severance Children's Hospital, Seoul, South Korea.
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Abstract
The topic of intravenous (IV) fluids may be regarded as “reverse nephrology”, because nephrologists usually treat to remove fluids rather than to infuse them. However, because nephrology is deeply rooted in fluid, electrolyte, and acid-base balance, IV fluids belong in the realm of our specialty. The field of IV fluid therapy is in motion due to the increasing use of balanced crystalloids, partly fueled by the advent of new solutions. This review aims to capture these recent developments by critically evaluating the current evidence base. It will review both indications and complications of IV fluid therapy, including the characteristics of the currently available solutions. It will also cover the use of IV fluids in specific settings such as kidney transplantation and pediatrics. Finally, this review will address the pathogenesis of saline-induced hyperchloremic acidosis, its potential effect on outcomes, and the question if this should lead to a definitive switch to balanced solutions.
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Affiliation(s)
- Ewout J Hoorn
- Division of Nephrology and Transplantation, Department of Internal Medicine, Erasmus Medical Center, Room D-438, PO Box 2040, 3000, CA, Rotterdam, The Netherlands.
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