Isotonic Fluid Research Articles

"TRATAMENTO DA CETOACIDOSE DIABÉTICA NA UNIDADE DE TERAPIA INTENSIVA"

Introduction: Diabetic ketoacidosis (DKA) is a serious complication of type 1 diabetes caused by a lack of insulin, leading to hyperglycemia and acidosis. Factors such as infections and poor insulin administration can trigger it, and its urgent treatment in the ICU involves fluid replacement, intravenous insulin, and control of complications. Methodology: This article is a literature review on the treatment of diabetic ketoacidosis in the ICU, based on studies from the last 10 years available in English and Portuguese in the PubMed, SciELO, and BVS databases. Complete and free articles were included, excluding those that did not directly address the topic. Results and Discussion: The treatment of diabetic ketoacidosis (DKA) in the ICU follows protocols to quickly correct metabolic and hemodynamic alterations. Initial replacement of isotonic fluids treats severe dehydration and improves tissue perfusion. Low-dose intravenous insulin corrects ketosis and hyperglycemia, but should be adjusted accordingly, with potassium levels also need to be monitored and replaced. Continuous monitoring of blood glucose and electrolytes is crucial to avoid complications such as cerebral edema. Identifying and treating the underlying cause of DKA, such as infections, is essential to prevent recurrences. Conclusion: The treatment of diabetic ketoacidosis in the ICU is mainly based on rapid fluid replacement, controlled insulin administration, and continuous monitoring. Potassium management and identification of the cause are essential to prevent recurrences and improve prognosis, with the ICU being the ideal setting for intensive care and reducing mortality.

Which Intravenous Isotonic Fluid Offers Better Outcomes for Patients with a Brain Injury?

Administering intravenous fluids is a common therapy for critically ill patients. Isotonic crystalloid solutions, such as saline or balanced solutions, are frequently used for intravenous fluid therapy. The choice between saline or a balanced crystalloid has been a significant question in critical care medicine. Recent large randomized controlled trials (RCTs) have investigated whether balanced crystalloids yield better outcomes in general or specific critical care populations, and many of them have confirmed this hypothesis. Although the broad eligibility criteria of these RCTs suggest applicability to neurocritical care patients, it is important to discuss whether using balanced crystalloids, as opposed to saline, would benefit patients who primarily have neurological disorders or diseases. This review considers the relevance of this question, weighs the pros and cons of the two fluid types, examines available data, and anticipates results from ongoing RCTs to guide clinicians in selecting the optimal fluid for patients with brain injury.

7759 Undetectable PTHrP and Elevated Il-6 in a 517759 Year Old Male With Clear Cell Renal Carcinoma, Complicated by Paraneoplastic Hypercalcemia

Abstract Disclosure: E. Cedeno: None. T. Patel: None. C. Zacharia: None. Title Undetectable PTHrP and elevated IL-6 in a 51-year-old male with clear cell renal carcinoma, complicated by paraneoplastic hypercalcemia. Introduction: Malignant hypercalcemia as a paraneoplastic syndrome is very common in lung and kidney cancers. Traditionally, humoral hypercalcemia of malignancy (HHM) is linked to excess PTHrP production, but other possible contributors, such as interleukin-6 (IL-6), have been identified. We present a case of HHM with undetectable PTHrP and elevated levels of IL-6. Case A 51-year-old male with RCC presented with symptomatic hypercalcemia (polyuria and polydipsia), found during a pre-op visit. Initial tests were consistent with non parathyroid-mediated hypercalcemia: adjusted Ca 13.2 (9.1-11.2 mg/dL), iCal 1.69 (0.95-1.32 mmol/L), iPTH <4.0 (8.0-85.0 pg/mL), 25-OH-Vit D 41(30-80 ng/mL), 1,25-OH D 64.7 (24.8- 81.5pg/mL), PTHrP undetectable (<2.0 pmol/L), SPEP and UPEP without abnormalities. A CT showed a large 15x12x14 cm partially necrotic mass arising from the right kidney, consistent with malignancy. The patient was treated with isotonic IV fluids and underwent a right nephrectomy on day 6 of hospitalization with subsequent complete resolution of hypercalcemia 24 hours post-surgery. Adjusted Ca and iCal normalized. iPTH from initial 4 improved to 30.1 (8.0-85.0 pg/mL), and IL-6 was found to be high to 62.5 (0.0-13.0 pg/mL). Final pathology was consistent with clear cell RCC. The patient was discharged, with normal laboratory values on follow-up. Conclusion: Hypercalcemia is the most common paraneoplastic complication of RCC, and approximately 17% of all patients with RCC will develop hypercalcemia. Although usually mediated by PTHrP, evidence points towards other possible contributors. IL-6 has been hypothesized to be a possible mediator of malignant hypercalcemia in paraneoplastic syndromes¹. This is evidenced by our case, where our patient had undetectable levels of PTHrP in the setting of RCC, and was later found to have elevated IL-6, pointing to the latter as a possible culprit. In conclusion, our case supports IL-6 as a possible contributor to the pathogenesis of malignant hypercalcemia in RCC patients, literature is sparse on PTHrP-independent HHM and rare case reports demonstrated this phenomenon not just in RCC but also in other malignancies like ALL. There are some hypotheses implicating IL-6 influencing tumor growth as well as bone metastasis. Our case adds a valuable contribution to this limited database. Further studies are warranted to understand the role of IL-6 in HHM as well as anti-IL6 agents as a potential therapeutic option for treatment-resistant hypercalcemia. Reference: Max G. Weissglas, The Role of Interleukin-6 in the Induction of Hypercalcemia in RCC Transplanted into Nude Mice, Endocrinology, Volume 138, Issue 5, May 1997, Pages 1879-1885. Presentation: 6/2/2024

The Safety and Efficacy of Hypertonic Saline in Achieving Primary Fascial Closure Following Damage Control Laparotomy: A Systematic Review and Meta-Analysis.

Effective fluid management is critical in patients undergoing damage control laparotomy (DCL) for trauma and sepsis. Hypertonic saline (HTS) has been proposed as an alternative to isotonic fluids to enhance primary fascial closure rates and optimize fluid balance. This systematic review and meta-analysis aimsto evaluate the efficacy and safety of HTS compared to isotonic fluids in patients undergoing DCL. A comprehensive literature search was conducted across multiple databases up to the 14thof June 2024, identifying studies that compared HTS to isotonic fluids in adult patients undergoing DCL for trauma or sepsis. Eligible studies included randomized controlled trials and observational studies reporting outcomes such as early primary fascial closure (EPFC) rates, time to fascial closure, fluid requirements, electrolyte imbalances, renal function, and mortality. Data extraction and quality assessment were performed independently by two reviewers, and pooled analyses were conducted using fixed-effectmodels where appropriate. Four studies encompassing 375 patients met the inclusion criteria, with 100 patients receiving HTS and 275 receiving isotonic fluids. HTS administration was associated with a significantly higher EPFC rate compared to isotonic fluids (odds ratio (OR): 0.314; 95% confidence interval (CI): 0.142-0.696; p=0.004). The mean time to fascial closure was also significantly reduced in the HTS group by approximately eight hours (mean difference (MD): 8.007 hours; 95% CI: 5.558-10.596; p<0.001). Patients receiving HTS required significantly less total fluid over 48 hours (MD: 1.055 liters; 95% CI: 0.713-1.398; p<0.001). While HTS use led to higher peak sodium levels (MD: -4.318 mEq/L; 95% CI: -4.702 to -3.934; p<0.001), there were no significant differences in peak creatinine levels, need for inpatient renal replacement therapy, or 28-day mortality between the groups. HTS appears to be effective in improving EPFC rates and reducing both time to closure and overall fluid requirements in patients undergoing DCL for trauma and sepsis. Although associated with higher serum sodium levels, HTS did not increase the risk of renal dysfunction or mortality. These findings suggest that HTS is a safe and efficacious alternative to isotonic fluids in the management of critically ill patients requiring DCL. Further large-scale, randomized controlled trials are warranted to confirm these results and inform clinical guidelines.

The efficacy and safety of isotonic and hypotonic fluids in intravenous maintenance fluid therapy in term newborns: national multicenter observational "neofluid" study.

The objective of this study was to evaluate the efficacy and safety of isotonic and hypotonic intravenous fluids in maintenance fluid therapy for term infants. This was a multi-centre, prospective, observational study conducted in 21 participating centres from December 30, 2020, to June 30, 2023. The study included term newborns requiring parenteral fluid therapy for maintenance (NCT04781361). The fluid treatment was divided into two groups based on the concentration of sodium in the parenteral fluid, designated as hypotonic (NaCl <130 mmol/L) and isotonic (NaCl = 130-154 mmol/L). The primary outcomes were the change in mean plasma sodium (pNa) levels per hour (∆pNa mmol/L/h), the incidence of hyponatremia (pNa <135 mmol/L) and hypernatremia (pNa >145 mmol/L), and the occurrence of clinically significant changes in sodium levels (∆pNa >0.5 mmol/L/h). A total of 420 patients from 21 centers were included. The ∆pNa was negative in the hypotonic fluid group and positive in the isotonic fluid group, with a significant difference between the groups [respectively -0.07 ± 0.03 (95% CI: -0.13 to -0.02); 0.04 ± 0.03 (95%CI: -0.02 to 0.09), p = 0.04]. There was no difference between the groups in terms of the development of hypernatremia or a clinically meaningful pNa increase. The hypotonic fluid group had a higher incidence of hyponatremia and a clinically meaningful sodium decrease compared to the isotonic fluid group [7.9% vs. 1.2% (OR:6.5, p:0.03)] and [12.2% vs.4.2% (OR:2.9, p = 0.03)]. Contrary to current understanding, this large-scale study is the first to demonstrate that the use of hypotonic fluids in maintenance fluid therapy for newborns poses a risk of hyponatremia development, whereas isotonic fluid therapy appears safe.

Pain related syndrome of inappropriate antidiuretic hormone secretion in a kitten

A 2-month-old domestic shorthair kitten was presented for evaluation of weakness, gait abnormalities, and signs of pain after trauma. On admission, the patient was found laterally recumbent with obvious gait abnormalities: difficulty rising from sitting and marked unilateral left hind limb lameness. On orthopedic examination, severe pain, crepitations, and swelling of the left hind limb were detected. Results of the first diagnostic work-up were all consistent with hyponatremia, hypochloremia and a Salter-Harris type I fracture.The kitten initially received isotonic fluids, analgesia, and antiemetic treatment. Twelve hours after admission, the analgesic plan was considered insufficient, and the general patient's condition worsened, showing severe mental depression. Blood and urine samples were collected for a more in-depth diagnostic evaluation; the patient showed worsening hyponatremia (113 mmol/L; [RR: 146,2-156,2]), severe plasma hypoosmolality (218.2 mOsm/kg; [RR: 287-307 mOsm/kg]), high natriuresis (Na: 74.9 mmol/L; [RR: <40 mmol/L]), and urinary hyperosmolality (630 mOsm/kg; [RR: <150 mOsm/kg]). Based on these new clinical findings syndrome of inappropriate antidiuretic hormone (SIADH) secretion was diagnosed.Emergency treatment with hypertonic saline was then instituted, a constant rate infusion of 3% hypertonic saline infusion to increase plasma sodium was initiated and a loop diuretic, furosemide (1 mg/kg/IV), was administered at 12-hour intervals to induce diuresis. Discharge occurred 4 days after admission as the patient was clinically stable and the hyponatremia progressively resolved. To the author's knowledge this is the first report of a kitten developing pain related SIADH associated to orthopedic trauma.

Use of colloids and crystalloids for perioperative clinical infusion management in cardiac surgery patients and postoperative outcomes: a meta-analysis

BackgroundThe optimal fluid management strategy for patients undergoing cardiac surgery was controversial regarding fluid volume and intraoperative fluid types. This study aimed to assess the correlation between colloids and crystalloids used for perioperative fluid therapy in cardiac surgery patients and postoperative prognosis.MethodsThe Ovid MEDLINE(R) ALL, Embase, and Cochrane Central Register of Controlled Trials databases were searched for eligible studies on fluid management strategies using colloids and crystalloids for cardiac surgery patients published before August 25th, 2023.ResultsTen randomized controlled trials met the eligibility criteria. Compared to the use of crystalloids, the use of colloids, including hydroxyethyl starch (HES), albumin, and gelatine, did not show any differences in mortality, transfusion, acute kidney injury, and atrial fibrillation rates, postoperative blood loss, the length of hospital stay, or the length of intensive care unit (ICU) stay. The results of this meta-analysis showed that the crystalloid group had significantly reduced postoperative chest tube output compared to the colloid group. In the subgroup analysis, the amount of fresh frozen plasma (FFP) infused was significantly lower when using fluid management in the ICU and when using isotonic crystalloids compared to the colloids. In addition, when using fluid management in the ICU, patients in the colloid group had a significant increase in urine volume 24 h after surgery. However, other related factors, including the type of crystalloid solution, type of colloidal solution, and timing of liquid management, did not affect most outcomes.ConclusionBoth colloids and crystalloids could be used as alternatives for perioperative fluid management after cardiac surgery. The use of crystalloids significantly reduced the postoperative chest tube output, and the need for FFP infusion decreased significantly with the use of isotonic crystalloids or fluid management during the ICU stay. ICU patients in the colloid group had higher urine output 24 h after surgery. In addition, although the infusion method was not related to most outcomes, the rates of red blood cell and FFP transfusion and postoperative blood loss in the crystalloid group seemed to be lower, which needed to be further studied in high-quality and large-sample RCTs.Trial registrationPROSPERO, CRD42023415234.

Amnioinfusion compared with expectant management in oligohydramnios with intact amnions in the second and early third trimesters.

Treatment of oligohydramnios in the mid-trimester is challenging, because of the high incidence of adverse perinatal outcomes mainly due to bronchopulmonary dysplasia. Antenatal amnioinfusion has been proposed as a possible treatment for oligohydramnios with intact amnions, but there are few relevant studies. This study aimed to evaluate the effectiveness of transabdominal amnioinfusion in the management of oligohydramnios without fetal lethal malformations in the second and early third trimesters. It is a historical cohort study. A total of 79 patients diagnosed with oligohydramnios at 18-32 weeks gestation were enrolled. In the amnioinfusion group (n = 39), patients received transabdominal amnioinfusion with the assistance of real-time ultrasound guidance. In the expectant group (n = 41), patients were treated with 3000 mL of intravenous isotonic fluids daily. The perioperative complications and perinatal outcomes were analyzed. Compared with the expectant group, the delivery latency was significantly prolonged, and the rate of cesarean delivery was significantly reduced in the amnioinfusion group (p < 0.05). Although the rate of intrauterine fetal death was significantly reduced, the incidence of spontaneous miscarriage, premature rupture of membranes (PROMs), and threatened preterm labor were significantly higher in the amnioinfusion group than in the expectant group (p < 0.05). There was no significant difference in terms of perinatal mortality (28.9% vs. 41.4%, p > 0.05). Multivariate logistic regression revealed that amnioinfusion (odds ratio [OR] 0.162, 95% confidence interval [CI] 0.04-0.61, p = 0.008) and gestational age at diagnosis (OR 0.185, 95% CI 0.04-0.73, p = 0.016) were independently associated with neonatal adverse outcomes. Further subgrouping showed that amnioinfusion significantly reduced the frequency of bronchopulmonary hypoplasia for patients ≤26 weeks (26.7% vs. 75.0%, p = 0.021). The rates of other neonatal complications were similar in both groups. Amnioinfusion has no significant effect on improving the perinatal mortality of oligohydramnios in the second and early third trimesters. It may lead to a relatively high rate of PROM and spontaneous abortion. However, amnioinfusion may significantly improve the latency period, the rate of cesarean delivery, and neonatal outcomes of oligohydramnios, especially for women ≤26 weeks with high risk of neonatal bronchopulmonary hypoplasia.

Splenic hematoma and hemoperitoneum in a Thoroughbred racehorse after racing.

To describe the clinical presentation of a Thoroughbred filly with acute hemoperitoneum from a splenic source immediately after racing. A 3-year-old Thoroughbred filly used for racing and that had raced shortly before presentation to the hospital. On presentation, the filly was quiet, alert, and responsive with a heart rate of 76 beats/min, pale mucous membranes, and absent borborygmi. All other physical examination parameters were within normal limits. Abdominal ultrasound was performed and revealed echogenic free abdominal fluid and a splenic hematoma. Abdominocentesis yielded sanguinous fluid with a PCV of 35%. The next day, repeat ultrasound revealed the splenic hematoma with capsular separation. The filly was treated overnight with isotonic crystalloid fluids and aminocaproic acid (40 mg/kg, IV, slow bolus over 30 minutes followed by 20 mg/kg, IV, q 6 h), potassium penicillin (22,000 IU/kg, IV, q 6 h), gentamicin (6.6 mg/kg, IV, q 24 h), and omeprazole (4 mg/kg, PO, q 24 h). The lowest PCV obtained from the filly was 36 hours after presentation. The filly stabilized with medical treatment and was discharged to a farm for further recuperation. There are no published reports detailing hemoperitoneum of splenic origin in Thoroughbreds immediately after racing. Hemoperitoneum of splenic origin is not common in horses, with most cases of hemoperitoneum being secondary to acute trauma, neoplasia, parturition, or postoperative complications. While uncommon, this case raises awareness to another differential for a colicky horse immediately after racing.

Dual benefits of scleral lenses in collateral cases of Stevens-Johnson syndrome and Keratoconus-A case series

Scleral lenses (SL) are larger diameter lenses that rest over the scleral, unlike the corneal lenses. These lenses are fitted to not touch the cornea by creating a space that will be filled with sterile isotonic fluid. Indications of SL include corneal ectatic conditions such as keratoconus (KC), pellucid marginal degeneration,and ocular surface disorders such as dry eye (DE), Stevens-Johnson syndrome (SJS), and graft-versus-host disease. Corneal ectasia in SJS has been rarely reported but still exists, which causes severe DE, photophobia, and blurred vision. In such a scenario, SL is an ideal treatment option as they provide constant lubrication to the ocular surface and better visual acuity. This report witnessed the effectiveness of SL in SJS associated with KC – a rare combination.

Electrochemical dissolution and retrieval of broken NiTi endodontic files from root canal using chloride based isotonic fluids as electrolytes - An in vitro study.

The electrochemical dissolution method of instrument retrieval emphasizes on the dissolution of the instrument rather than sacrificing dentine. Most of the studies conducted for electrochemical dissolution used fluoride-containing electrolytes and were performed inside a beaker. In this study, we used chloride-based fluids as electrolytes. Fifty extracted mandibular first premolars were divided into five groups based on the electrolytes used. Canals were enlarged to ProTaper Universal F2, and files were intentionally broken inside the canal. These specimens were subjected to electrochemical characterization by applying the potential of 9V for 20 min. Optical images were taken to assess the change in surface topography. The results were analyzed statistically by one-way analysis of variance (analysis of variance [ANOVA]). The rate of dissolution based on the electrolyte used decreased in the following order, viz. Tyrode's solution>artificial saliva>normal saline>Ringer's lactate/physiological serum. Apart from fluoride, chloride-based electrolytes could be an efficient alternative.

How to follow the guidelines, when the appropriate fluid is missing?

Intravenous maintenance fluid therapy (IV-MFT) is probably the most prescribed drug in paediatric hospital care. Recently paediatric societies have produced evidence-based practice guidelines that recommend the use of balanced isotonic fluid when prescribing IV-MFT in both acute and critical paediatric care. Unfortunately, the applicability of these guidelines could be called into question when a ready-to-use glucose-containing balanced isotonic fluid is not available. The main objective of this study was to describe the availability of glucose-containing balanced isotonic fluids in European and Middle Eastern paediatric acute and critical care settings. This work is an ancillary study of the survey dedicated to IV-MFT practices in the paediatric acute and critical care settings in Europe and Middle East, a cross-sectional electronic 27-item survey, emailed in April-May 2021 to paediatric critical care physicians across 34 European and Middle East countries. The survey was developed by an expert multi-professional panel within the European Society of Peadiatric and Neonatal Intensive Care (ESPNIC). Balanced isotonic fluid with glucose 5% was available for only 32/153 (21%) responders. Balanced isotonic fluid with glucose 5% was consistently available in the UK (90%) but not available in France, Greece, The Netherlands and Turkey. Conclusion: Ready-to-use isotonic balanced IV solutions containing glucose in sufficient amount exist but are inconsistently available throughout Europe. National and European Medication Safety Incentives should guarantee the availability of the most appropriate and safest IV-MFT solution for all children. What is Known: • Intravenous maintenance fluid therapy (IV-MFT) is probably the most prescribed drug in paediatric hospital care. • Balanced isotonic fluid is recommended when prescribing IV-MFT in both acute and critical paediatric care. What is New: • Balanced isotonic fluid with glucose 5% is available for less than 25% of the prescribers in Europe and the Middle East.Availability of balanced isotonic fluid with glucose 5% varies from one country to another but can also be inconsistent within the same country. • Clinicians who have access to a ready-to-use balanced isotonic fluid with glucose 5% are more likely to consider its use than clinicians who do not have access to such an IV solution.

Intravenous Isotonic Maintenance Fluids for Hospitalized Children

Intravenous Isotonic Maintenance Fluids for Hospitalized Children

Survey of current maintenance intravenous fluids prescribing practices among Egyptian pediatricians

BackgroundRecent research has firmly linked the administration of hypotonic fluids with the incidence of hospital-acquired hyponatremia in pediatric patients.ObjectiveThis study examined the prevailing practices in prescribing maintenance intravenous fluids (mIVFs) among Egyptian pediatricians, assessed the compliance of current prescribing practices with the American Academy of Pediatrics Clinical Practice Guidelines (AAP-CPG), and emphasized the urgency for revised educational initiatives.Materials and methodsTo recruit pediatricians for this study, a convenience and snowballing sampling methods were used. The questionnaire was created in Google Forms and then distributed in English to Egyptian Facebook groups devoted to pediatric education. The data collection phase started on January 1, and ended on February 28, 2022. Different case scenarios with increased antidiuretic hormone were introduced, and respondents were asked to choose the optimum mIVFs in each case scenario. Finally, respondents were directly asked how often they use isotonic fluids as their primary mIVFs and what caused them to not use isotonic fluids.ResultsFor this study, a total of 513 participatants were included. The survey revealed that Egyptian pediatricians did not not fully comply with AAP-CPG regarding the mIVFs in pediatrics. Hypotonic fluids are still preferred, but there is a shift towards 0.45% sodium chloride (NaCl) from the previously favored 0.2% NaCl. Isotonic fluids are more common in older age groups and conditions that involve potential excessive antidiuretic hormone secretion, while 0.2% NaCl remains popular in neonatal care. Balanced solutions are underused, indicating practice variation.ConclusionsThe utilization of isotonic fluids in the treatment of neurologic conditions has experienced a notable increase, propelled by heightened awareness and a growing demand for continuous medical education. To comprehensively address concerns related to fluid management beyond the scope of AAP-CPG, it is imperative to conduct multicenter studies across governmental, private, and educational pediatric healthcare settings to assess and improve pediatracians' clinical practice.

Use of a Novel Buffered Hypertonic Saline Solution for Fluid Replacement and Resuscitation During Spinal Surgery in Adolescents.

During major orthopedic procedures, such as posterior spinal fusion (PSF), isotonic fluids, colloids, starches, or gelatins are commonly used to replace the preoperative fluid deficit and provide ongoing fluid resuscitation. Given recent concerns regarding the potential adverse physiologic effects of albumin solutions, we have modified our intraoperative practice to include the use of a novel 2% buffered hypertonic saline solution during major orthopedic procedures. We present our preliminary clinical experience with this novel fluid for intraoperative resuscitation and its impact on limiting the use of 5% albumin. A retrospective review was performed to identify patients who received 2% buffered hypertonic saline during PSF. The intraoperative course of these patients was compared to case-matched control patients who received standard care with isotonic fluids plus 5% albumin as an adjunct for intravascular resuscitation. The study cohort included 23 patients who received 2% buffered hypertonic saline and 25 in the case-matched control group. There was no difference in the volume of intraoperative isotonic crystalloid fluids, estimated blood loss, and urine output between the two groups. In the control cohort, 19 of 25 patients (76%) received 5% albumin compared to only six of 23 patients (26%, P = 0.0005) in the 2% buffered hypertonic saline group. The final pH was higher in the patients that received 2% buffered hypertonic saline than in the control group (7.40 ± 0.03 versus 7.36 ± 0.06, P = 0.0131). Additionally, the starting and final serum sodium values were higher in the patients that received 2% buffered hypertonic saline, although no difference was noted in the mean change from the starting value (average increase of 2 mEq/L in both groups). Use of a novel 2% buffered hypertonic saline solution for intraoperative resuscitation during major orthopedic procedures decreases the need for 5% albumin while avoiding the development of hyperchloremic metabolic acidosis which may occur with standard sodium chloride solutions.

Perioperative fluid and electrolyte management in surgical neonates

Neonates with surgical conditions may experience significant electrolyte abnormalities and dehydration of varying degrees. Increased awareness of perioperative hyponatremia and its associated morbidity has led to a shift in Pediatric fluid guidelines favoring the use of isotonic fluids. However, there is a lack of evidence-based guidelines for neonatal perioperative fluid administration, resulting in the extrapolation of fluid management principles from adults and children. This article reviews perioperative neonatal fluid management.

Isotonic balanced fluid versus 0.9% saline in patients with moderate to severe traumatic brain injury: A double-blinded randomised controlled trial

Background and importanceTraumatic brain injury (TBI) is a global health concern with significant economic impact. Optimal fluid therapy aims to restore intravascular volume, maintain cerebral perfusion pressure and blood flow, thus preventing secondary brain injury. While 0.9% saline (NS) is commonly used, concerns about acid-base and electrolyte imbalance and development of acute kidney injury (AKI) lead to consideration of balanced fluids as an alternative. ObjectivesThis study aimed to compare the outcomes of patients with moderate to severe TBI treated with Sterofundin (SF) versus NS. Design, settings and participantsA double-blinded randomised controlled trial of patients aged 18 to 65 years with TBI was conducted at the University Malaya Medical Centre from February 2017 to November 2019. Intervention or exposurePatients were randomly assigned to receive either NS or SF. The study fluids were administered for 72 h as continuous infusions or boluses. Participants, investigators, and staff were blinded to the fluid type. Outcomes measure and analysisThe primary outcome was in-hospital mortality. Relative risk (RR) with 95% confidence interval (CI) was calculated. Main resultsA total of 70 patients were included in the analysis, with 38 in the NS group and 32 in the SF group. The in-hospital mortality rate were 3 (7.9%) in the NS group vs. 4 (12.5%) in the SF group, RR = 1.29 (95% CI, 0.64 to 2.59; p = 0.695). No patients developed AKI and required renal replacement therapy. ICP on day 3 was significantly higher in the SF group (18.60 ± 9.26) compared to 12.77 ± 3.63 in the NS group, (95% CI, −11.46 to 0.20; p = 0.037). There were no significant differences in 3-day biochemical parameters and cerebral perfusion pressure, ventilator-free days, length of ICU stay, or Glasgow Outcome Scale-Extended (GOS-E) score at 6 months. ConclusionsIn patients with moderate to severe TBI, the use of SF was not associated with reduced in-hospital mortality, development of AKI, or improved 6-month GOS-E when compared to NS.

Neonatal Survival After Serial Amnioinfusions for Bilateral Renal Agenesis

Early anhydramnios during pregnancy, resulting from fetal bilateral renal agenesis, causes lethal pulmonary hypoplasia in neonates. Restoring amniotic fluid via serial amnioinfusions may promote lung development, enabling survival. To assess neonatal outcomes of serial amnioinfusions initiated before 26 weeks' gestation to mitigate lethal pulmonary hypoplasia. Prospective, nonrandomized clinical trial conducted at 9 US fetal therapy centers between December 2018 and July 2022. Outcomes are reported for 21 maternal-fetal pairs with confirmed anhydramnios due to isolated fetal bilateral renal agenesis without other identified congenital anomalies. Enrolled participants initiated ultrasound-guided percutaneous amnioinfusions of isotonic fluid before 26 weeks' gestation, with frequency of infusions individualized to maintain normal amniotic fluid levels for gestational age. The primary end point was postnatal infant survival to 14 days of life or longer with dialysis access placement. The trial was stopped early based on an interim analysis of 18 maternal-fetal pairs given concern about neonatal morbidity and mortality beyond the primary end point despite demonstration of the efficacy of the intervention. There were 17 live births (94%), with a median gestational age at delivery of 32 weeks, 4 days (IQR, 32-34 weeks). All participants delivered prior to 37 weeks' gestation. The primary outcome was achieved in 14 (82%) of 17 live-born infants (95% CI, 44%-99%). Factors associated with survival to the primary outcome included a higher number of amnioinfusions (P = .01), gestational age greater than 32 weeks (P = .005), and higher birth weight (P = .03). Only 6 (35%) of the 17 neonates born alive survived to hospital discharge while receiving peritoneal dialysis at a median age of 24 weeks of life (range, 12-32 weeks). Serial amnioinfusions mitigated lethal pulmonary hypoplasia but were associated with preterm delivery. The lower rate of survival to discharge highlights the additional mortality burden independent of lung function. Additional long-term data are needed to fully characterize the outcomes in surviving neonates and assess the morbidity and mortality burden. ClinicalTrials.gov Identifier: NCT03101891.

Volume replacement in the resuscitation of trauma patients with acute hemorrhage: an umbrella review

BackgroundThe use of intravenous fluid therapy in patients with major trauma in prehospital settings is still controversial. We conducted an umbrella review to evaluate which is the best volume expansion in the resuscitation of a hemorrhagic shock to support the development of major trauma guideline recommendations.MethodsWe searched PubMed, Embase, and CENTRAL up to September 2022 for systematic reviews (SRs) investigating the use of volume expansion fluid on mortality and/or survival. Quality assessment was performed using AMSTAR 2 and the Certainty of the evidence was assessed with the Grading of Recommendations Assessment, Development, and Evaluation (GRADE) approach.ResultsWe included 14 SRs investigating the effects on mortality with the comparisons: use of crystalloids, blood components, and whole blood. Most SRs were judged as critically low with slight overlapping of primary studies and high consistency of results. For crystalloids, inconsistent evidence of effectiveness in 28- to 30-day survival (primary endpoint) was found for the hypertonic saline/dextran group compared with isotonic fluid solutions with moderate certainty of evidence. Pre-hospital blood component infusion seems to reduce mortality, however, as the certainty of evidence ranges from very low to moderate, we are unable to provide evidence to support or reject its use. The blood component ratio was in favor of higher ratios among all comparisons considered with moderate to very low certainty of evidence. Results about the effects of whole blood are very uncertain due to limited and heterogeneous interventions in studies included in SRs.ConclusionHypertonic crystalloid use did not result in superior 28- to 30-day survival. Increasing evidence supports the scientific rationale for early use of high-ratio blood components, but their use requires careful consideration. Preliminary evidence is very uncertain about the effects of whole blood and further high-quality studies are required.

Making the Case for Hyperosmolar Saline Arthroscopic Irrigation Fluids: A Systematic Review of Basic Science, Translational, and Clinical Evidence.

Commonly used isotonic arthroscopic irrigation fluids, such as normal saline or lactated Ringer's, were initially formulated for intravenous administration so they do not replicate the physiologic properties of healthy synovial fluid. Synovial fluid plays an important role in regulating joint homeostasis such that even transient disruptions in its composition and physiology can be detrimental. Previous studies suggest that hyperosmolar solutions may be a promising alternative to traditional isotonic fluids. This manuscript sought to systematically review and synthesize previously published basic science, translational, and clinical studies on the use of hyperosmolar arthroscopic irrigation fluids to delineate the optimal fluid for clinical use. A systematic literature search of MEDLINE/PubMed and Embase databases was performed in accordance with Preferred Reporting Items for Systemic Reviews and Meta-analyses (PRISMA) guidelines. The search phrases were: ("cartilage" AND "hyperosmolar"); ("arthroscopy" OR "arthroscopic" AND "hyperosmolar"). The titles, abstracts, and full texts were screened for studies on hyperosmolar solutions and articular cartilage. Study quality was assessed, and relevant data were collected. A meta-analysis was not performed due to study heterogeneity. A risk of bias assessment was performed on the included translational and clinical studies. There were 10 basic science studies, 2 studies performed in translational animal models, and 2 clinical studies included in this review. Of the basic science studies, 7 utilized a mechanical injury model. The translational studies were carried out in the canine shoulder and equine stifle (knee) joint. Clinical studies were performed in the shoulder and knee. Multiple basic science, translational, and clinical studies highlight the short-term safety, cost-effectiveness, and potential benefits associated with use of hyperosmolar solutions for arthroscopic irrigation. Further work is needed to develop and validate the ideal formulation for a hyperosmolar irrigation solution with proven long-term benefits for patients undergoing arthroscopic surgeries.