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Wang J, Li DF, Sun ZK, Yang DQ, Li H. Influence of hypocalcemia on the prognosis of patients with multiple trauma. World J Clin Cases 2024; 12:3800-3806. [DOI: 10.12998/wjcc.v12.i19.3800] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/21/2024] [Revised: 04/22/2024] [Accepted: 05/07/2024] [Indexed: 06/29/2024] Open
Abstract
BACKGROUND Hypocalcemia is highly common in hospitalized patients, especially in those with trauma, On the other hand, abnormal calcium metabolism is an important metabolic challenge; however, it is often neglected and untreated, and certain factors may induce serious neurological and cardiovascular complications.
AIM To retrospectively analyze the impact of hypocalcemia on the prognosis of patients with multiple traumas.
METHODS The study was conducted from January 2020 to December 2021. Ninety-nine patients with multiple injuries were treated at the critical care medicine department of Fuyang People’s Hospital. The selected indicators included sex, age, and blood calcium and hematocrit levels. Many indicators were observed, including within 24 h of hospitalization, and the prognosis was collected after 28 d. Based on the blood calcium levels, the patients were divided into the following two groups: Normocalcemia and hypocalcemia. Of the 99 patients included, 81 had normocalcemia, and 18 had hypocalcemia. Separate experiments were conducted for these two groups.
RESULTS There was an association between serum calcium levels and the prognosis of patients with polytrauma.
CONCLUSION Clinically, the prognosis of patients with multiple traumas can be preliminarily evaluated based on serum calcium levels.
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Affiliation(s)
- Jia Wang
- Intensive Care Unit, Fuyang People's Hospital, Fuyang 236000, Anhui Province, China
| | - Dong-Feng Li
- Intensive Care Unit, Fuyang People's Hospital, Fuyang 236000, Anhui Province, China
| | - Zhen-Kang Sun
- Intensive Care Unit, Fuyang People's Hospital, Fuyang 236000, Anhui Province, China
| | - Dong-Qiang Yang
- Intensive Care Unit, Fuyang People's Hospital, Fuyang 236000, Anhui Province, China
| | - Hao Li
- Intensive Care Unit, Fuyang People's Hospital, Fuyang 236000, Anhui Province, China
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Wade DJ, Pilkington C, Henson JC, Jensen HK, Kalkwarf K, Bhavaraju A, Bruce N, Bowman S, Margolick J. Higher Doses of Calcium Associated With Survival in Trauma Patients. J Surg Res 2024:S0022-4804(24)00094-5. [PMID: 38519359 DOI: 10.1016/j.jss.2024.02.014] [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: 02/28/2023] [Revised: 01/17/2024] [Accepted: 02/16/2024] [Indexed: 03/24/2024]
Abstract
INTRODUCTION Calcium is required for coagulation, cardiac output, and peripheral vascular resistance. Between 85% and 94% of trauma patients treated with massive blood transfusion develop hypocalcemia.1 The aim of this study is to evaluate the relationship between increased intravenous calcium administration during massive transfusion and improved survival of trauma patients. METHODS We performed a retrospective analysis of trauma patients who received massive transfusion over a 2-y period. Doses of elemental calcium administered per unit of blood product transfused were calculated by calcium to blood product ratio (CBR). Chi-square test evaluated association between coagulopathy and 30-d mortality. Two-sample t-test evaluated association between CBR and coagulopathy. Bivariate regression analysis evaluated association between CBR and blood products transfused per patient. Multivariable logistic regression analysis, controlling for age, sex, coagulopathy, and Injury Severity Score evaluated the association between CBR and mortality. RESULTS The study included 77 patients. Coagulopathy was associated with increased 30-d mortality (P < 0.05). Patients who survived had higher CBR than those who died (P < 0.05). CBR was associated with a significant reduction in total blood products transfused per patient (P < 0.05). CBR was not associated with coagulopathy (P = 0.24). Multivariable logistic regression analysis demonstrated that Injury Severity Score ≥16, coagulopathy and decreased CBR were significant predictors of mortality (P < 0.05). CBR above 50 mg was a predictor of survival (P < 0.05). CONCLUSIONS Higher doses of calcium given per blood product transfused were associated with improved 30-d survival and decreased blood product transfusions.
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Affiliation(s)
- Dillon J Wade
- Division of Trauma and Acute Care Surgery, Department of Surgery, University of Arkansas for Medical Sciences, Little Rock, Arkansas
| | - Collin Pilkington
- Division of Trauma and Acute Care Surgery, Department of Surgery, University of Arkansas for Medical Sciences, Little Rock, Arkansas
| | - J Curran Henson
- Division of Trauma and Acute Care Surgery, Department of Surgery, University of Arkansas for Medical Sciences, Little Rock, Arkansas
| | - Hanna K Jensen
- Division of Trauma and Acute Care Surgery, Department of Surgery, University of Arkansas for Medical Sciences, Little Rock, Arkansas
| | - Kyle Kalkwarf
- Division of Trauma and Acute Care Surgery, Department of Surgery, University of Arkansas for Medical Sciences, Little Rock, Arkansas
| | - Avi Bhavaraju
- Division of Trauma and Acute Care Surgery, Department of Surgery, University of Arkansas for Medical Sciences, Little Rock, Arkansas
| | - Nolan Bruce
- Division of Trauma and Acute Care Surgery, Department of Surgery, University of Arkansas for Medical Sciences, Little Rock, Arkansas
| | - Stephen Bowman
- Department of Health Policy and Management, Fay W. Boozman College of Public Health, Little Rock, Arkansas
| | - Joseph Margolick
- Division of Trauma and Acute Care Surgery, Department of Surgery, University of Arkansas for Medical Sciences, Little Rock, Arkansas.
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Hall C, Colbert C, Rice S, Dewey E, Schreiber M. Hypocalcemia in Trauma is Determined by the Number of Units Transfused, Not Whole Blood Versus Component Therapy. J Surg Res 2023; 289:220-228. [PMID: 37148855 DOI: 10.1016/j.jss.2023.03.043] [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: 07/29/2022] [Revised: 03/24/2023] [Accepted: 03/30/2023] [Indexed: 05/08/2023]
Abstract
INTRODUCTION Blood component resuscitation is associated with hypocalcemia (HC) (iCal <0.9 mmol/L) that contributes to coagulopathy and death in trauma patients. It is unknown whether or not whole blood (WB) resuscitation helps mitigate the risk of HC in trauma patients. We hypothesized that calcium homeostasis is maintained and mortality improved in patients who only receive WB. MATERIALS AND METHODS This is a retrospective review of all adult trauma patients who received WB from July 2018 to December 2020. Variables included transfusions, ionized calcium levels, and calcium replacement. Patients were characterized as follows based on blood products received: WB or WB with other blood components. Groups were compared with respect to HC, correction of HC, 24 h, and inpatient mortality. RESULTS Two hundred twenty-three patients received WB and met the inclusion criteria. 107 (48%) received WB only. HC occurred in 13% of patients who received more than one WB unit compared to 29% of WB and other blood component patients (P = 0.02). WB patients received less calcium replacement (median 250 mg versus 2000 mg, P < 0.01). HC and total units transfused within 4 h were associated with mortality in the adjusted model. HC significantly increased after 5 units of blood products were transfused, regardless of product type. WB was not protective against HC. CONCLUSIONS HC and failure to correct HC are significant risk factors for mortality in trauma. Resuscitations with WB only and WB in combination with other blood components are associated with HC especially when more than 5 units of any blood product are transfused. Calcium supplementation should be prioritized in any large volume transfusion, regardless of blood product type.
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Affiliation(s)
- Chad Hall
- Baylor Scott & White Medical Center, Temple, Texas.
| | | | - Sean Rice
- Oregon Health & Science University, Portland, Oregon
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Potestio CP, Van Helmond N, Azzam N, Mitrev LV, Patel A, Ben-Jacob T. The Incidence, Degree, and Timing of Hypocalcemia From Massive Transfusion: A Retrospective Review. Cureus 2022; 14:e22093. [PMID: 35308720 PMCID: PMC8920796 DOI: 10.7759/cureus.22093] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/09/2022] [Indexed: 11/05/2022] Open
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Augmented Renal Clearance Following Traumatic Injury in Critically Ill Patients Requiring Nutrition Therapy. Nutrients 2021; 13:nu13051681. [PMID: 34063391 PMCID: PMC8156106 DOI: 10.3390/nu13051681] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Revised: 05/13/2021] [Accepted: 05/14/2021] [Indexed: 11/23/2022] Open
Abstract
The intent of this study was to ascertain the prevalence of augmented renal clearance (ARC) in patients with traumatic injuries who require nutrition therapy and identify factors associated with ARC. Adult patients admitted to the trauma intensive care unit from January 2015 to September 2016 who received enteral or parenteral nutrition therapy and had a 24 h urine collection within 4 to 14 days after injury were retrospectively evaluated. Patients with a serum creatinine concentration > 1.5 mg/dL, required dialysis, or had an incomplete urine collection were excluded. ARC was defined as a measured creatinine clearance > 149 mL/min/1.73 m2. Two hundred and three patients were evaluated. One hundred and two (50%) exhibited ARC. A greater proportion of patients with ARC were male (86% vs. 67%; p = 0.004), had traumatic brain injury (33% vs. 9%; p = 0.001), a higher injury severity score (30 ± 11 vs. 26 ± 12; p = 0.015), were younger (36 ± 15 vs. 54 ± 17 years; p = 0.001), had a lower serum creatinine concentration (0.7 ± 2 vs. 0.9 ± 0.2 mg/dL; p = 0.001) and were more catabolic (nitrogen balance of −10.8 ± 13.0 vs. −6.2 ± 9.2 g/d; p = 0.004). The multivariate analysis revealed African American race and protein intake were also associated with ARC. Half of critically ill patients with traumatic injuries experience ARC. Patients with multiple risk factors for ARC should be closely evaluated for dosing of renally-eliminated electrolytes, nutrients, and medications.
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Dose-response of intravenous calcium in the surgical intensive care unit. Int J Clin Pharm 2020; 43:246-250. [PMID: 32918653 DOI: 10.1007/s11096-020-01145-7] [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: 06/16/2020] [Accepted: 09/02/2020] [Indexed: 10/23/2022]
Abstract
Background Hypocalcemia is common in patients admitted to the surgical intensive care unit and is associated with increased morbidity and mortality. Current dosing strategies do not always achieve ionized calcium (iCa) normalization, especially in patients with severe hypocalcemia. Objective The purpose of this study was to explore the association between intravenous (IV) calcium dose and change in ionized calcium. Setting Patients admitted to the surgical intensive care unit with concomitant hypocalcemia at a large academic hospital in the United States. Method This single center, retrospective cohort study evaluated the association between IV calcium dose and subsequent change in ionized calcium level in adult surgical intensive care unit patients with hypocalcemia. The primary outcome of this study was to develop a model exploring the association between IV calcium dose and change in iCa levels. Secondary outcomes included describing the average IV calcium dose required to normalize iCa levels, average time to normalization of iCa levels, and assessing the safety of IV calcium replacement. Main outcome measure Change in iCa. Results One hundred and ninety-four patients met study criteria. In the final model initial iCa level, total calcium dose, the interaction between initial iCa level and total calcium dose, age, and pancreatitis remained. The model (R2 = 0.625) is expressed by the following equation: Change in iCa level = 0.462 - 0.011 × [Ca dose] - 0.0007 × [Age] - 0.259 × [Initial iCa] + 0.076 × [initial iCa × Ca dose] - 0.076 × [Pancreatitis]. Removing two patients that received > 10 grams of total calcium improved the R2 to 0.769. Lastly, a simplified model removing age and pancreatitis found a similar R2 of 0.756. Conclusion We observed that change in iCa level after initial calcium dose depended on the baseline iCa. Our full and simplified model excluding two outliers predicted 76.9% and 75.6% of the variation in iCa response, respectively. If validated in other settings this model could be utilized to provide more accurate calcium dosing.
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Strickling J, Wilkowski MJ. Severe, Symptomatic Hypocalcemia due to Denosumab Administration: Treatment and Clinical Course. Case Rep Nephrol Dial 2019; 9:33-41. [PMID: 31192226 PMCID: PMC6514500 DOI: 10.1159/000499824] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2018] [Accepted: 03/05/2019] [Indexed: 12/28/2022] Open
Abstract
Denosumab is a receptor activator of nuclear factor kappa-B (RANK) ligand inhibitor used in the treatment of osteoporosis. Blockade of RANK ligand prevents osteoclastic resorption of bone, but in doing so impairs the parathyroid hormone (PTH)-driven maintenance of serum calcium. A subsequent elevation of PTH remains active at sites other than bone, potentially lowering serum phosphate by inhibiting proximal tubular reabsorption. We present 2 patients who developed severe, symptomatic hypocalcemia after administration of denosumab. These patients provide an opportunity to describe the clinical course and treatment, including the need to consider a continuous calcium infusion, of severe, symptomatic hypocalcemia caused by denosumab.
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Affiliation(s)
- Jarred Strickling
- Department of Internal Medicine, Mercer University School of Medicine - Savannah Campus, Savannah, Georgia, USA
| | - Michael J Wilkowski
- Department of Internal Medicine, Mercer University School of Medicine - Savannah Campus, Savannah, Georgia, USA
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Obesity attenuates serum 25-hydroxyvitamin D response to cholecalciferol therapy in critically ill patients. Nutrition 2019; 63-64:120-125. [PMID: 30939386 DOI: 10.1016/j.nut.2019.01.018] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2018] [Revised: 01/20/2019] [Accepted: 01/25/2019] [Indexed: 01/21/2023]
Abstract
OBJECTIVES The presence of obesity may confound cholecalciferol dosing in vitamin D-deficient patients owing to potentially decreased bioavailability. The aim of this retrospective study was to evaluate cholecalciferol therapy in vitamin D-deficient, critically ill trauma patients with and without obesity. METHODS Adult patients with severe traumatic injuries who had a serum 25-hydroxyvitamin D (25-OH vit D) <50nmol/L were prescribed 10 000 IU of liquid cholecalciferol daily. Efficacy was defined as achievement of a 25-OH vit D of 75 to 200nmol/L. Safety was evaluated by the presence of hypercalcemia (serum ionized calcium >1.32 mmol/L). Fifty-three patients (18 obese, 35 non-obese) were identified for study. RESULTS Despite similar baseline concentrations (36 ± 7 versus 37 ± 7 nmol/L; P = NS), 25-OH vit D response was attenuated for those with obesity after 1 and 2 wk of cholecalciferol therapy (51 ± 18 versus 66 ± 27nmol/L, P < 0.01; 68 ± 19 versus 92 ± 25nmol/L, P < 0.01, respectively). Patients with obesity also tended to experience less hypercalcemia (22% versus 49% of patients, respectively) post-cholecalciferol therapy. CONCLUSION Obesity alters the response to cholecalciferol therapy in critically ill patients with severe traumatic injuries.
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Kyle T, Greaves I, Beynon A, Whittaker V, Brewer M, Smith J. Ionised calcium levels in major trauma patients who received blood en route to a military medical treatment facility. Emerg Med J 2017; 35:176-179. [PMID: 29175878 DOI: 10.1136/emermed-2017-206717] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2017] [Revised: 10/13/2017] [Accepted: 11/01/2017] [Indexed: 11/04/2022]
Abstract
BACKGROUND Hypocalcaemia is a common metabolic derangement in critically ill patients. Blood transfusion can also contribute to depleted calcium levels. The aims of this study were to identify the incidence of hypocalcaemia in military trauma patients receiving blood products en route to a deployed hospital facility and to determine if intravenous calcium, given during the prehospital phase, has an effect on admission calcium levels. METHODS This was a retrospective review of patients transported by the UK Medical Emergency Response Team in Afghanistan between January 2010 and December 2014 who were treated with blood products in the prehospital setting. Total units of blood products administered, basic demographics, Injury Severity Score and trauma type were collected. Ionised serum calcium levels on admission to hospital were compared between those who received blood products without prehospital intravenous calcium supplemental therapy (non-treatment) and patients who were treated with 10 mL of intravenous calcium chloride (10%) concurrently with blood products (treatment). RESULTS The study included 297 patients; 237 did not receive calcium and 60 did. The incidence of hypocalcaemia in the non-treatment group was 70.0% (n=166) compared with 28.3% (n=17) in the treatment group. Serum calcium levels were significantly different between the groups (1.03 mmol/L vs 1.25 mmol/L, difference 0.22 mmol/L, 95% CI 0.15 to 0.27). In the non-treatment group, 26.6% (n=63) had calcium levels within the normal range compared with 41.7% (n=25) in those who received calcium. There was a dose response of calcium level to blood products with a significant decrease in calcium levels as the volume of blood products increased. CONCLUSION Trauma patients who received blood products were at high risk of hypocalcaemia. Aggressive management of these patients with intravenous calcium during transfusion may be required.
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Affiliation(s)
- Tony Kyle
- Academic Department of Military Emergency Medicine, Royal Centre for Defence Medicine (Research and Academia), Birmingham, UK.,Institute of Learning Research & Innovation, James Cook University Hospital, Middlebrough, UK
| | - Ian Greaves
- Academic Department of Military Emergency Medicine, Royal Centre for Defence Medicine (Research and Academia), Birmingham, UK.,Emergency Department, James Cook University Hospital, Middlesbrough, UK
| | - Anthony Beynon
- Emergency Department, Derriford Hospital, Plymouth, UK.,Defence Medical Group South West, Derriford Hospital, Plymouth, UK
| | - Vicky Whittaker
- Health and Social Care Institute, Teesside University, Middlesbrough, North Yorkshire, UK
| | - Mike Brewer
- Department of Biomedical Science, 16 Medical Regiment, Colchester, UK
| | - Jason Smith
- Academic Department of Military Emergency Medicine, Royal Centre for Defence Medicine (Research and Academia), Birmingham, UK.,Emergency Department, Derriford Hospital, Plymouth, UK
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Faour O, Gilloteaux J. Calcitonin: Survey of new anatomy data to pathology and therapeutic aspects. TRANSLATIONAL RESEARCH IN ANATOMY 2017. [DOI: 10.1016/j.tria.2017.01.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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Giancarelli A, Birrer KL, Alban RF, Hobbs BP, Liu-DeRyke X. Hypocalcemia in trauma patients receiving massive transfusion. J Surg Res 2015; 202:182-7. [PMID: 27083965 DOI: 10.1016/j.jss.2015.12.036] [Citation(s) in RCA: 77] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2015] [Revised: 11/11/2015] [Accepted: 12/22/2015] [Indexed: 10/22/2022]
Abstract
BACKGROUND Massive transfusion protocol (MTP) is increasingly used in civilian trauma resuscitation. Calcium is vital for coagulation, but hypocalcemia commonly occurs during massive transfusion due to citrate and serum calcium chelation. This study was conducted to determine the incidence of hypocalcemia and severe hypocalcemia in trauma patients who receive massive transfusion and to compare characteristics of patients with severe versus nonsevere hypocalcemia. MATERIALS AND METHODS This was a retrospective study of trauma patients who received massive transfusion between January 2009 and November 2013. The primary outcome was the incidence of hypocalcemia (ionized calcium [iCa] < 1.12 mmol/L) and severe hypocalcemia (iCa < 0.90 mmol/L). Secondary outcomes included calcium monitoring, calcium replacement, and correction of coagulopathy. RESULTS There were 156 patients included; 152 (97%) experienced hypocalcemia, and 111 (71%) had severe hypocalcemia. Patients were stratified into iCa ≥ 0.90 (n = 45) and iCa < 0.90 (n = 111). There were no differences in demographics or baseline laboratories except the severe hypocalcemia group had higher baseline activated partial thromboplastin time (29.7 [23.7-50.9] versus 25.8 [22.3-35.9], P = 0.003), higher lactic acid (5.8 [4.1-9.8] versus 4.0 [3.1-7.8], P = 0.019), lower platelets (176 [108-237] versus 208 [169-272], P = 0.003), and lower pH (7.14 [6.98-7.28] versus 7.23 [7.14-7.33], P = 0.019). Mortality was higher in the severe hypocalcemia group (49% versus 24%, P = 0.007). Patients in the iCa < 0.90 group received more blood products (34 [23-58] versus 22 [18-30] units, P < 0.001), and calcium chloride (4 [2-7] versus 3 [1-4] g, P = 0.002), but there was no difference in duration of MTP or final iCa. Neither group reached a median iCa > 1.12. CONCLUSIONS Hypocalcemia is common during MTP, and vigilant monitoring is warranted. Research is needed to effectively manage hypocalcemia during massive transfusion.
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Affiliation(s)
- Amanda Giancarelli
- Department of Pharmacy, Orlando Regional Medical Center, Orlando, Florida.
| | - Kara L Birrer
- Department of Pharmacy, Orlando Regional Medical Center, Orlando, Florida
| | - Rodrigo F Alban
- Department of Surgical Education, Orlando Regional Medical Center, Orlando, Florida
| | - Brandon P Hobbs
- Department of Pharmacy, Orlando Regional Medical Center, Orlando, Florida
| | - Xi Liu-DeRyke
- Department of Pharmacy, Orlando Regional Medical Center, Orlando, Florida.
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Johnston CT, Maish GO, Minard G, Croce MA, Dickerson RN. Evaluation of an Intravenous Potassium Dosing Algorithm for Hypokalemic Critically Ill Patients. JPEN J Parenter Enteral Nutr 2015; 41:796-804. [PMID: 26304602 DOI: 10.1177/0148607115602885] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
PURPOSE The intent of this study was to evaluate the safety and efficacy of an intravenous (IV) potassium (K) dosing algorithm for hypokalemic critically ill trauma patients. METHODS Adult patients, admitted to the trauma intensive care unit from June 2010 to October 2012 and who received IV K therapy according to a standardized dosing algorithm, were retrospectively evaluated. Patients who received IV K during resuscitation or following initiation of nutrition therapy, IV fluids containing >20 mEq/L of potassium, or medications known to alter K homeostasis or those with an arterial pH change >0.1, diarrhea, hypomagnesemia, renal impairment, or morbid obesity were excluded. RESULTS In total, 715 patients were reviewed to obtain 100 evaluable patients. Serum K for patients with mild depletion (serum K, 3.5-3.9 mEq/L, n = 74) remained unchanged at 0.0 ± 0.3 mEq/L ( P = ns) following 46 ± 8 mEq. Serum K increased by 0.4 ± 0.3 mEq/L ( P = .001) following 78 ± 18 mEq during moderate depletion (serum K, 3-3.4 mEq/L). None of the patients experienced hyperkalemia (serum K, >5.2 mEq/L) postinfusion. The presence of traumatic brain injury (TBI) blunted the response to IV K for mild K depletion as only 26% had an increase in serum K compared with 55% of patients without TBI ( P = .025). CONCLUSIONS The Nutrition Support Service-guided IV K dosing algorithm was safe for patients with mild and moderate hypokalemia and efficacious for those with moderate hypokalemia. Further study in patients with severe hypokalemia (serum K, <3 mEq/L) is warranted.
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Affiliation(s)
- Corry T Johnston
- 1 Department of Pharmacy, University of Maryland Baltimore Washington Medical Center, Baltimore, Maryland, USA
| | - George O Maish
- 2 Department of Surgery, University of Tennessee Health Sciences Center, Memphis, Tennessee, USA
| | - Gayle Minard
- 2 Department of Surgery, University of Tennessee Health Sciences Center, Memphis, Tennessee, USA
| | - Martin A Croce
- 2 Department of Surgery, University of Tennessee Health Sciences Center, Memphis, Tennessee, USA
| | - Roland N Dickerson
- 3 Department of Clinical Pharmacy, University of Tennessee Health Sciences Center, Memphis, Tennessee, USA
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Abstract
Phosphorus (P) and calcium (Ca) serve vital roles in the human body and are essential components of nutrition support therapy. Regulation of P and regulation of Ca in the body are closely interrelated, and P and Ca homeostasis can be affected by several factors, including disease states, clinical condition, severity of illness, and medications. Nutrition support clinicians must understand these factors to prevent and treat P and Ca disorders in patients receiving nutrition support therapy. This review provides an overview of P and Ca for the adult nutrition support clinician, with some emphasis on the hospitalized inpatient.
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Affiliation(s)
- Michael D Kraft
- Department of Clinical, Social and Administrative Sciences, University of Michigan College of Pharmacy, Ann Arbor, Michigan Department of Pharmacy Services, University of Michigan Hospitals and Health Centers, Ann Arbor, Michigan
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Calcium intraveineux dans un cas d’hypocalcémie aiguë symptomatique. ANNALES FRANCAISES DE MEDECINE D URGENCE 2014. [DOI: 10.1007/s13341-014-0430-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Holowaychuk MK, Monteith G. Ionized hypocalcemia as a prognostic indicator in dogs following trauma. J Vet Emerg Crit Care (San Antonio) 2011; 21:521-30. [DOI: 10.1111/j.1476-4431.2011.00675.x] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Ionized calcium. Clin Chim Acta 2011; 412:696-701. [DOI: 10.1016/j.cca.2011.01.004] [Citation(s) in RCA: 121] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2010] [Revised: 01/04/2011] [Accepted: 01/04/2011] [Indexed: 11/23/2022]
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Baird GS, Rainey PM, Wener M, Chandler W. Reducing routine ionized calcium measurement. Clin Chem 2009; 55:533-40. [PMID: 19168556 DOI: 10.1373/clinchem.2008.116707] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
BACKGROUND Ionized calcium (iCa) is measured frequently in hospitalized patients, and hypocalcemia is frequently found, seemingly supporting the practice. METHODS We retrieved the results of 58 040 iCa tests and records of intravenous (IV) and oral calcium supplementation from laboratory and hospital information systems and evaluated them for frequency of testing, frequency of hypocalcemia, and effects of calcium supplementation. RESULTS Serial and daily iCa testing was common and responsible for a substantial fraction of all iCa tests ordered. Half of all patients tested had iCa values below the reference interval. IV, but not oral, calcium therapy increased mean iCa concentrations, but the effect of calcium administration was small compared with the spontaneous increase in iCa that occurred in similar patients who received no calcium treatment. A retrospective analysis suggested that a low total calcium (tCa) concentration (<2.00 mmol/L, <8 mg/dL) could identify most patients with low iCa (<1.0 mmol/L). Introduction of a reflexive strategy reduced iCa testing by 72%-76% and reduced IV calcium gluconate therapy by 45%-81%. CONCLUSIONS Testing for iCa and IV calcium supplementation were significantly reduced with a reflexive calcium testing strategy that provided iCa testing only to patients with low tCa. Adverse clinical outcomes possibly associated with hypocalcemia did not increase.
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Affiliation(s)
- Geoffrey S Baird
- Department of Laboratory Medicine, University of Washington, Seattle, Washington 98195-7110, USA.
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Moltzan CJ, Anderson DA, Callum J, Fremes S, Hume H, Mazer CD, Poon MC, Rivard G, Rizoli S, Robinson S. The evidence for the use of recombinant factor VIIa in massive bleeding: development of a transfusion policy framework. Transfus Med 2008; 18:112-20. [DOI: 10.1111/j.1365-3148.2008.00846.x] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Dickerson RN, Henry NY, Miller PL, Minard G, Brown RO. Low serum total calcium concentration as a marker of low serum ionized calcium concentration in critically ill patients receiving specialized nutrition support. Nutr Clin Pract 2007; 22:323-8. [PMID: 17507732 DOI: 10.1177/0115426507022003323] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
BACKGROUND The intent of this study was to ascertain to what extent serum total calcium concentration (tCa) <7 mg/dL reflects hypocalcemia (defined by ionized calcium concentration [iCa] of < or = 1.12 mmol/L) in critically ill patients receiving specialized nutrition support. METHODS Adult patients (> or = 18 years) admitted to the trauma, surgical, medical, burn, or neurosurgical intensive care units, trauma stepdown unit, or progressive care unit and referred to the nutrition support service were retrospectively identified for potential inclusion into the study. Serum chemistries, arterial blood gas measurements, nutrition markers, and serum iCa were simultaneously obtained from each patient approximately 1 day after initiation of specialized nutrition support. Patients with a serum creatinine > or = 2 mg/dL, hyperphosphatemia (> or = 6 mg/dL), severe hypomagnesemia (< or = 1.12 mg/dL), history of metabolic bone disease, or parathyroid disease were excluded from the analysis. RESULTS One hundred ninety-five patients (91% who had multiple trauma, with a mean Injury Severity Score 31 +/- 13) were enrolled into the study. Specialized nutrition support was initiated 2.8 +/- 1.8 days and calcium status was studied 4.2 +/- 3.1 days after hospital admission, respectively. The majority (28 of 33, or 85%) of patients with a tCa <7 mg/dL were hypocalcemic compared with 33% (22 out of 66) of patients with a tCa of 7-7.4 mg/dL, and 11% (11 of 96) of those with a tCa of 7.5-7.9 mg/dL (p < .001). CONCLUSIONS Critically ill patients with a serum total calcium concentration of <7 mg/dL have a high rate of hypocalcemia (iCa < or = 1.12 mmol/L). Hypocalcemia, defined as a serum iCa of < or = 1.12 mmol/L, occurs in 85% of acutely ill patients with a serum tCa <7 mg/dL.
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Affiliation(s)
- Roland N Dickerson
- Department of Clinical Pharmacy, University of Tennessee Health Science Center, Memphis, TN 38163, USA.
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Dickerson RN, Morgan LM, Croce MA, Minard G, Brown RO. Treatment of moderate to severe acute hypocalcemia in critically ill trauma patients. JPEN J Parenter Enteral Nutr 2007; 31:228-33. [PMID: 17463149 DOI: 10.1177/0148607107031003228] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND Our recent data indicate that 21% of critically ill, adult, multiple-trauma patients receiving specialized nutrition support experience hypocalcemia. However, evidence-based methods for the treatment of moderate to severe acute hypocalcemia (ionized calcium concentration [iCa] <1 mmol/L) are lacking. METHODS The efficacy of an infusion of 4 g of calcium gluconate was evaluated in 20 critically ill, adult, multiple-trauma patients with moderate to severe hypocalcemia (iCa <1 mmol/L). The calcium gluconate was infused at a rate of 1 g/h in a small volume admixture. A serum iCa determination was obtained on the following day. RESULTS Calcium gluconate infusion significantly increased serum iCa from 0.90 +/- 0.08 mmol/L to 1.16 +/- 0.11 mmol/L (p < .001) on the following day. This dosage regimen was successful for achieving a serum iCa >1 mmol/L for 19 of 20 (95%) hypocalcemic patients and achieved a concentration >1.12 mmol/L in 14 (70%) of the patients. Two patients developed mild hypercalcemia (iCa of 1.34 mmol/L and 1.38 mmol/L) postinfusion. CONCLUSIONS A short-term infusion of 4 g of intravenous (IV) calcium gluconate for the treatment of moderate to severe hypocalcemia appears to be a promising regimen for critically ill, adult, multiple-trauma patients.
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Affiliation(s)
- Roland N Dickerson
- Department of Pharmacy, University of Tennessee Health Science Center, Memphis, Tennessee 38163, USA.
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Treatment of hypocalcemia in critical illness--part 2. Nutrition 2007; 23:436-7. [PMID: 17360159 DOI: 10.1016/j.nut.2007.01.012] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2007] [Accepted: 01/25/2007] [Indexed: 11/25/2022]
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Dickerson RN, Morgan LM, Croce MA, Minard G, Brown RO. Dose-dependent characteristics of intravenous calcium therapy for hypocalcemic critically ill trauma patients receiving specialized nutritional support. Nutrition 2006; 23:9-15. [PMID: 17123782 DOI: 10.1016/j.nut.2006.10.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2006] [Revised: 09/27/2006] [Accepted: 10/01/2006] [Indexed: 11/24/2022]
Abstract
OBJECTIVE The purpose of this investigation was to evaluate the dose-dependent characteristics of intravenous calcium gluconate therapy for hypocalcemic critically ill patients. METHODS The dose-dependent characteristics of 2 g versus 4 g of intravenous calcium gluconate therapy were evaluated in 25 critically ill, adult multiple trauma patients with hypocalcemia. The calcium gluconate was infused at a rate of 1 g/h for both groups. Patients weighed within 90% to 120% of ideal body weight, had normal renal function, did not receive diuretic therapy, and did not have anasarca. RESULTS Fifteen patients with mild hypocalcemia (serum ionized calcium concentration [iCa] 1-1.12 mmol/L) were given 2 g of calcium gluconate. Ten patients with moderate to severe hypocalcemia (iCa <1 mmol/L) were given 4 g. Each dosage group had a significant (P < or = 0.001) increase in iCa (from 1.07 +/- 0.05 to 1.17 +/- 0.05 mmol/L and from 0.92 +/- 0.08 to 1.16 +/- 0.11 mmol/L, respectively). Each dosage group retained about half of the dose in the exchangeable calcium space (P = NS between groups), but the higher dosage group retained significantly more elemental calcium overall (81 +/- 38 versus 201 +/- 50 mg, respectively, P < or = 001). Serum ionized calcium concentrations achieved a plateau without a further decline in iCa by 10 h after completion of the infusion for each dosage. CONCLUSION About half of the administered elemental calcium dose was retained for each dosage group, with the higher dose (4 g) resulting in significantly more elemental calcium retention in the exchangeable calcium space. An iCa determination performed about > or =10 h after the completion of the calcium gluconate infusion should be sufficient time to ensure equilibration of iCa to assess the efficacy of the therapy. This mode of calcium therapy serves as an effective means for providing calcium to the acutely hypocalcemic, critically ill, multiple trauma patient.
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Affiliation(s)
- Roland N Dickerson
- Department of Clinical Pharmacy, University of Tennessee Health Science Center, Memphis, Tennessee, USA.
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