Clinical Significance of Bioimpedance Spectroscopy in Critically Ill Patients

Background: Early fluid resuscitation is a key aspect in the successful management of critically ill patients, but the optimal goal for volume control after the acute stage of critical illness remains unclear. This study aimed to evaluate the prognostic value of bioimpedance spectrometry for fluid management in critically ill patients. Methods: In this prospective observational study, patients who consented to participate were screened within the first 24 hours of admission to a medical intensive care unit (ICU) from February 4, 2015, to January 31, 2016. Information on demographics, comorbidities, primary reasons for admission, baseline laboratory data, and ventilator or inotropic use were documented. Data of fluid intake, fluid output, and body weight were recorded for the first 3 days of ICU admission. Bioimpedance spectrometry was performed on the first and third days after ICU admission. All participants were followed until death or hospital discharge. Results: Of the 140 enrolled patients (median age: 70 years, interquartile range: 60-77 years), 23 (16.4%) patients died during hospitalization. Independent predictors of hospital mortality were Acute Physiology and Chronic Health Evaluation II scores (per 1 point increase, odds ratio [OR]: 1.101) and overhydration (OH) volume on the first day (per 1 L increase, OR: 1.216). Compared to normal OH status (OH volume between −1 and 1 L), hyper OH status (OH volume < −1 L) on the third day after ICU admission was an independent predictor of hospital death (OR: 7.609). Normal OH status on the third day was associated with greater numbers of ICU-free and ventilator-free days. Conclusion: Bioimpedance spectrometry can be used to predict outcomes in critically ill patients. Increased OH volume on day 1 and hyper OH volume on day 3 of ICU admission are associated with a greater risk of hospital mortality. Volume status on day 3 is associated with durations of ventilator use and ICU stay.

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The dose - response association between fluid overload and hospital mortality in critically ill patients: a multicenter, prospective, observational cohort study

10.21203/rs.2.20792/v1 ◽

2020 ◽

Author(s):

Meiping Wang ◽

Bo Zhu ◽

Li Jiang ◽

Ying Wen ◽

Bin Du ◽

...

Keyword(s):

Hospital Mortality ◽

Critically Ill ◽

Dose Response ◽

Fluid Balance ◽

Critically Ill Patients ◽

Fluid Overload ◽

Fluid Management ◽

Management Strategies ◽

Icu Admission ◽

Increased Risk

Abstract Background Fluid management is important for ensuring hemodynamic stability in critically ill patients but easily leads to fluid overload. However, the optimal fluid balance plot or range for critically ill patients is unknown. This study aimed to explore the dose-response relationship between fluid overload (FO) and hospital mortality in critically ill patients.Methods Data were derived from the China Critical Care Sepsis Trial (CCCST). Patients with sequential fluid data for the first 3 days of admission to the ICU were included. FO was expressed as the ratio of the cumulative fluid balance (L) and initial body weight (kg) at ICU admission as a percentage. Maximum fluid overload (MFO) was defined as the peak FO value during the first 3 days of ICU admission. We used logistic regression models with restricted cubic splines to assess the relationship between MFO and the risk of hospital mortality.ResultsIn total, 3850 patients were included, 929 (24.1%) of whom died in hospital. For each 1% L/kg increase in the FO, the risk of hospital mortality increased by 4% (HR 1.04, 95% CI 1.03 - 1.05, P < 0.001). FO greater than 10% was associated with a 44% increased HR of hospital mortality compared with FO less than 5% (HR 1.44, 95% CI 1.27 - 1.67). Notably, we also found a non-linear dose-response association between MFO and hospital mortality.Conclusions Both higher and lower fluid balance were associated with an increased risk of hospital mortality. Further studies should explore this relationship and seek for the optimal fluid management strategies for critically ill patients.

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How to prescribe and troubleshoot continuous renal replacement therapy: A case-based review

Kidney360 ◽

10.34067/kid.0004912020 ◽

2020 ◽

pp. 10.34067/KID.0004912020

Author(s):

Javier A. Neyra ◽

Lenar Yessayan ◽

Melissa L. Thompson Bastin ◽

Keith Wille ◽

Ashita J Tolwani

Keyword(s):

Renal Replacement Therapy ◽

Continuous Renal Replacement Therapy ◽

Replacement Therapy ◽

Critically Ill ◽

Critically Ill Patients ◽

Clinical Status ◽

Fluid Management ◽

Volume Control ◽

Regional Citrate Anticoagulation ◽

Case Based

Continuous renal replacement therapy (CRRT) is the preferred dialysis modality for solute management, acid-base stability, and volume control in critically ill patients with acute kidney injury (AKI) in the intensive care unit (ICU). CRRT offers multiple advantages over conventional hemodialysis in the critically ill population such as greater hemodynamic stability, better fluid management, greater solute control, lower bleeding risk and a more continuous (physiologic) approach of kidney support. Despite its frequent use, several aspects of CRRT delivery are still not fully standardized or do not have solid evidence-based foundations. In this manuscript, we provide a case-based review and recommendations of common scenarios and interventions encountered during the provision of CRRT to critically ill patients. Specific focus is made on initial prescription, CRRT dosing, and adjustments related to severe hyponatremia management, concomitant extracorporeal membrane oxygenation support, dialysis catheter placement, use of regional citrate anticoagulation and antibiotic dosing. This case-driven simulation is made as the clinical status of the patient evolves and is based on step-wise decisions made during the care of this patient according to specific patient's needs and the logistics available at the corresponding institution.

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The Prognostic Value of Brain Dysfunction in Critically Ill Patients with and without Sepsis: A Post Hoc Analysis of the ICON Audit

Brain Sciences ◽

10.3390/brainsci11050530 ◽

2021 ◽

Vol 11 (5) ◽

pp. 530

Author(s):

Ilaria Crippa ◽

Fabio Taccone ◽

Xavier Wittebole ◽

Ignacio Martin-Loeches ◽

Mary Schroeder ◽

...

Keyword(s):

Hospital Mortality ◽

Critically Ill ◽

Critically Ill Patients ◽

Brain Function ◽

Brain Dysfunction ◽

Hospital Death ◽

Post Hoc Analysis ◽

Increased Risk ◽

Brain Failure ◽

Post Hoc

Brain dysfunction is associated with poor outcome in critically ill patients. In a post hoc analysis of the Intensive Care over Nations (ICON) database, we investigated the effect of brain dysfunction on hospital mortality in critically ill patients. Brain failure was defined as a neurological sequential organ failure assessment (nSOFA) score of 3–4, based on the assumed Glasgow Coma Scale (GCS) score. Multivariable analyses were performed to assess the independent roles of nSOFA and change in nSOFA from admission to day 3 (ΔnSOFA) for predicting hospital mortality. Data from 7192 (2096 septic and 5096 non-septic) patients were analyzed. Septic patients were more likely than non-septic patients to have brain failure on admission (434/2095 (21%) vs. 617/4665 (13%), p < 0.001) and during the ICU stay (625/2063 (30%) vs. 736/4665 (16%), p < 0.001). The presence of sepsis (RR 1.66 (1.31–2.09)), brain failure (RR 4.85 (3.33–7.07)), and both together (RR 5.61 (3.93–8.00)) were associated with an increased risk of in-hospital death, but nSOFA was not. In the 3280 (46%) patients in whom ΔnSOFA was available, sepsis (RR 2.42 (1.62–3.60)), brain function deterioration (RR 6.97 (3.71–13.08)), and the two together (RR 10.24 (5.93–17.67)) were associated with an increased risk of in-hospital death, whereas improvement in brain function was not.

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Dose–response association between fluid overload and in-hospital mortality in critically ill patients: a multicentre, prospective, observational cohort study

BMJ Open ◽

10.1136/bmjopen-2020-039875 ◽

2020 ◽

Vol 10 (12) ◽

pp. e039875

Author(s):

Meiping Wang ◽

Bo Zhu ◽

Li Jiang ◽

Ying Wen ◽

Bin Du ◽

...

Keyword(s):

Hospital Mortality ◽

Critically Ill ◽

Dose Response ◽

Fluid Balance ◽

Critically Ill Patients ◽

Fluid Overload ◽

Multivariable Analysis ◽

Main Diagnosis ◽

Icu Admission ◽

Increased Risk

ObjectivesFluid management is important in ensuring haemodynamic stability in critically ill patients, but can easily lead to fluid overload (FO). However, the optimal fluid balance plot or range for critically ill patients is unknown. This study aimed to explore the dose–response relationship between FO and in-hospital mortality in critically ill patients.DesignMulticentre, prospective, observational study.SettingEighteen intensive care units (ICUs) of 16 tertiary hospitals in China.ParticipantsCritically ill patients in the ICU for more than 3 days.Primary outcome measures and analysesFO was defined as the ratio of the cumulative fluid balance (L) and initial body weight (kg) on ICU admission, expressed as a percentage. Maximum FO was defined as the peak value of FO during the first 3 days of ICU admission. Logistic regression models with restricted cubic splines were used to explore the pattern and magnitude of the association between maximum FO and risk of in-hospital mortality. Age, sex, Acute Physiology and Chronic Health Evaluation II score, Sequential Organ Failure Assessment score on admission, main diagnosis on admission to ICU, comorbidities, time of maximum FO, mechanical ventilation, renal replacement therapy, use of vasopressors and centres were adjusted in multivariable analysis.ResultsA total of 3850 patients were included in the study, 929 (24.1%) of whom died in the hospital. For each 1% L/kg increase in maximum FO, the risk of in-hospital mortality increased by 4% (adjusted HR (aHR) 1.04, 95% CI 1.03 to 1.05, p<0.001). A maximum FO greater than 10% was associated with a 44% increased HR of in-hospital mortality compared with an FO less than 5% (aHR 1.44, 95% CI 1.27 to 1.67). Notably, we found a non-linear dose–response association between maximum FO and in-hospital mortality.ConclusionsBoth higher and negative fluid balance levels were associated with an increased risk of in-hospital mortality in critically ill patients.Trial registration numberChiCTR-ECH-13003934.

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Association between phosphate disturbances and mortality among critically ill patients with sepsis or septic shock

BMC Pharmacology and Toxicology ◽

10.1186/s40360-021-00487-w ◽

2021 ◽

Vol 22 (1) ◽

Author(s):

Shmeylan A. Al Harbi ◽

Hasan M. Al-Dorzi ◽

Albatool M. Al Meshari ◽

Hani Tamim ◽

Sheryl Ann I. Abdukahil ◽

...

Keyword(s):

Septic Shock ◽

Hospital Mortality ◽

Critically Ill ◽

Critically Ill Patients ◽

Retrospective Cohort ◽

Clinical Characteristics ◽

Serum Phosphate ◽

The Other ◽

Icu Admission ◽

Surgical Icus

Abstract Objective The aim of this study is to examine the association of hypophosphatemia and hyperphosphatemia on the first day of ICU admission with mortality in septic critically ill patients. Methods In this retrospective cohort study, all adult patients who were admitted to the medical-surgical ICUs between 2014 and 2017 with sepsis or septic shock were categorized as having hypophosphatemia, normophosphatemia and hyperphosphatemia based on day 1 serum phosphate values. We compared the clinical characteristics and outcomes between the three groups. We used multivariate analysis to examine the association of hypophosphatemia and hyperphosphatemia with these outcomes. Results Of the 1422 patients enrolled in the study, 188 (13%) had hypophosphatemia, 865 (61%) normophosphatemia and 369 (26%) had hyperphosphatemia. The patients in the hyperphosphatemia group had significantly lower GCS, higher APACHE II scores, higher serum creatinine, increased use of vasopressors, and required more mechanical ventilation with lower PaO2/FiO2 ratio compared with the other two groups. In addition, the hyperphosphatemia group showed significantly higher ICU and hospital mortality in comparison with the other two groups. Conclusion Hyperphosphatemia and not hypophosphatemia on the first ICU admission day was associated with an increase in the ICU and hospital mortality in septic critically ill patients.

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Dysbiosis of intestinal microbiota to predict in-hospital mortality in critically ill patients: results of a prospective observational cohort study

10.21203/rs.2.20261/v1 ◽

2020 ◽

Author(s):

Ru Wei ◽

Xu Chen ◽

Linhui Hu ◽

Zhimei He ◽

Xin Ouyang ◽

...

Keyword(s):

Intensive Care ◽

Hospital Mortality ◽

Critically Ill ◽

Intestinal Microbiota ◽

Sofa Score ◽

Critically Ill Patients ◽

Prognostic Value ◽

Apache Ii ◽

Hospital Death ◽

Death Group

Abstract Background: Despite the essential functions of the intestinal microbiota in human physiology, little research has been reported on the gut microbiota alteration in intensive care patients. This investigation aimed to explore the dysbacteriosis of intestinal flora in critically ill patients, and evaluate the prognostic performance of this dysbiosis to predict in-hospital mortality. Methods: A prospective cohort of patients were consecutively recruited at Intensive Care Units (ICUs) in Guangdong Provincial People's Hospital from March 2017 through October 2017. Acute Physiology and Chronic Health Evaluation (APACHE) II score and Sequential Organ Failure Assessment (SOFA) score were assessed, and fecal samples were taken for examination within 24 hours of ICU admission. The taxonomic composition of intestinal microbiome was determined using 16S rDNA gene sequencing. Patients were divided into survival and death group based on the outcomes in hospital. The two groups were statistically compared using the independent samples t test and Metastats analysis. Genera of bacteria showing significantly different abundance between groups were assessed for predictors of in-hospital death. The prognostic value of bacterial abundance alone and in combination with APACHE II or SOFA score were evaluated using the area under the receiver operating characteristic curve (AUROC). Results: Among the 61 patients that were examined, a total of 12 patients (19.7%) died during hospital stay. Bifidobacterium differed significantly in abundance between survival and death group ( P =0.031). The AUROC of Bifidobacterium abundance identifying in-hospital death at a cut-off probability of 0.0041 was 0.718 (95% confidence interval [CI], 0.588-0.826). The panel of Bifidobacterium abundance plus SOFA (AUROC, 0.882; 95% CI, 0.774-0.950) outperformed SOFA (AUROC, 0.649; 95% CI, 0.516-0.767; P =0.012) and Bifidobacterium abundance alone ( P =0.007). The panel of Bifidobacterium abundance plus APACHE II (AUROC, 0.876; 95% CI, 0.766-0.946) outperformed APACHE II (AUROC, 0.724; 95% CI, 0.595-0.831; P =0.035) and Bifidobacterium abundance alone ( P =0.012). Conclusions: Dysbiosis of intestinal microbiota with variable degree of reduction in Bifidobacterium abundance exhibits promising performance in predicting in-hospital mortality, and provides incremental prognostic value to existing scoring systems in the adult intensive care unit (ICU) setting.

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Association Between Phosphate Disturbances and Mortality Among Critically Ill Patients With Sepsis or Septic Shock

10.21203/rs.3.rs-149787/v1 ◽

2021 ◽

Author(s):

Shmeylan Al Harbi ◽

Hasan Al-Dorzi ◽

Albatool Al Meshari ◽

Hani Tamim ◽

Sheryl Ann Abdukahil ◽

...

Keyword(s):

Septic Shock ◽

Hospital Mortality ◽

Critically Ill ◽

Critically Ill Patients ◽

Retrospective Cohort ◽

Serum Phosphate ◽

The Other ◽

Icu Mortality ◽

Icu Admission ◽

Surgical Icus

Abstract Objective: The aim of this study is to examine the association of hypophosphatemia and hyperphosphatemia on the first day of ICU admission with mortality in septic critically ill patients. Methods: In this retrospective cohort study, all adult patients who were admitted to medical-surgical ICUs between 2014 and 2017 with sepsis or septic shock were categorized as having hypophosphatemia, hyperphosphatemia or based on day 1 serum phosphate values. We compared the clinical characteristics and outcomes between the three groups. We used multivariate analysis to examine the association of hypophosphatemia and hyperphosphatemia with these outcomes.Results: Of the 1422 patients enrolled in the study, 188 (13%) had hypophosphatemia, 865 (61%) normophosphatemia and 369 (26%) had hyperphosphatemia. Among the three groups, the patients in the hyperphosphatemia group had significantly lower GCS, higher APACHE II scores, higher serum creatinine, increased use of vasopressors, and required mechanical ventilation with lower PaO2/FiO2 ratio compared with the other two groups. In addition, hyperphosphatemia group also showed significantly higher ICU mortality and hospital mortality in comparison to the other two groups. Conclusion: Hyperphosphatemia and not hypophosphatemia on the first ICU admission day was associated with an increase in the ICU and hospital mortality in septic critically ill patients.

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Clinical Significance of Timing of Intubation in Critically Ill Patients with COVID-19: A Multi-Center Retrospective Study

Journal of Clinical Medicine ◽

10.3390/jcm9092847 ◽

2020 ◽

Vol 9 (9) ◽

pp. 2847

Author(s):

Yong Hoon Lee ◽

Keum-Ju Choi ◽

Sun Ha Choi ◽

Shin Yup Lee ◽

Kyung Chan Kim ◽

...

Keyword(s):

Hospital Mortality ◽

Critically Ill ◽

Critically Ill Patients ◽

Clinical Characteristics ◽

Distress Syndrome ◽

Hospital Death ◽

Early Group ◽

Early Intubation ◽

Significant Difference

The effect of intubation timing on the prognosis of critically ill patients with coronavirus 2019 (COVID-19) is not yet well understood. We investigated whether early intubation is associated with the survival of COVID-19 patients with acute respiratory distress syndrome (ARDS). This multicenter, retrospective, observational study was done on 47 adult COVID-19 patients with ARDS who were admitted to the intensive care unit (ICU) in Daegu, Korea between February 17 and April 23, 2020. Clinical characteristics and in-hospital mortality were compared between the early intubation and initially non-intubated groups, and between the early and late intubation groups, respectively. Of the 47 patients studied, 23 (48.9%) were intubated on the day of meeting ARDS criteria (early intubation), while 24 (51.1%) were not initially intubated. Eight patients were never intubated during the in-hospital course. Median follow-up duration was 46 days, and 21 patients (44.7%) died in the hospital. No significant difference in in-hospital mortality rate was noted between the early group and initially non-intubated groups (56.5% vs. 33.3%, p = 0.110). Furthermore, the risk of in-hospital death in the early intubation group was not significantly different compared to the initially non-intubated group on multivariate adjusted analysis (p = 0.385). Results were similar between early and late intubation in the subgroup analysis of 39 patients treated with mechanical ventilation. In conclusion, in this study of critically ill COVID-19 patients with ARDS, early intubation was not associated with improved survival. This result may help in the efficient allocation of limited medical resources, such as ventilators.

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Mortality rate among critically ill patients with COVID-19 in a medical system with adequate hospital resources: a prospective observational study

10.21203/rs.3.rs-52242/v1 ◽

2020 ◽

Author(s):

Christina Routsi ◽

Eleni Magira ◽

Stelios Kokkoris ◽

Ilias Siembos ◽

Charikleia Vrettou ◽

...

Keyword(s):

Observational Study ◽

Hospital Mortality ◽

Organ Failure ◽

Critically Ill ◽

Critically Ill Patients ◽

Prospective Observational Study ◽

Mortality Rates ◽

Entire Cohort ◽

Icu Admission ◽

Hospital Resources

Abstract Background: For critically ill patients with coronavirus disease 2019 (COVID-19) who require intensive care unit (ICU) admission, mortality rates vary widely depending on many factors, among which hospital resources and clinical setting seem important. We sought to determine the outcome of critically ill patients admitted in the usual multidisciplinary ICUs of a big referral for COVID-19 tertiary-care hospital with adequate resources.Methods: We performed a prospective observational study of all adult patients with COVID-19 consecutively admitted to four COVID-designated ICUs at Evangelismos Hospital, Athens, Greece, from March 11 to April 27, 2020.Results: Among 50 critically ill patients, ICU and hospital mortality for the entire cohort was 32% (16/50), whereas 66% (33/50) of patients were discharged alive from the ICU and 2% (1/50) were still treated in the ICU until June 16, 2020. ICU and hospital mortality for those who received invasive mechanical ventilation was 39% (16/41). Patients who eventually died had already increased risk of death on ICU admission, as suggested by the high values of the Acute Physiology and Chronic Health Evaluation II and Sequential Organ Failure Assessment scores, the presence of current malignancy and occurrence of cardiac arrest in 44% (7/16) of patients, and the general need for circulatory support by noradrenaline. Median PaO2/FiO2 on ICU admission for the entire cohort was 121 mmHg [interquartile range (IQR), 86-171 mmHg] and most patients had moderate and severe acute respiratory distress syndrome (ARDS) according to the Berlin Definition. The primary cause of death of all patients was multi-organ failure, most commonly due to sepsis, whereas none died from refractory hypoxemia, neurologic dysfunction or withdrawal of life support. Hospital stay was long in patients who survived [median 24 days (IQR, 15-35 days)] and was frequently complicated by bacteremias [36% (12/33)].Conclusion: Severely ill COVID-19 patients with moderate and severe ARDS may have equal or even lower mortality rates compared to ARDS due to other causes, when they are admitted in general ICUs with experienced and adequate staff without limitations in hospital resources, where established ARDS therapies are used.

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Impact of Renin-Angiotensin-Aldosterone System Inhibition on Mortality in Critically Ill COVID-19 Patients with Pre-Existing Hypertension: A Prospective Cohort Study

10.21203/rs.3.rs-898264/v1 ◽

2021 ◽

Author(s):

Kei Sato ◽

Nicole White ◽

Jonathon P. Fanning ◽

Nchafatso Obonyo ◽

Michael H. Yamashita ◽

...

Keyword(s):

Cohort Study ◽

Hospital Mortality ◽

Hospital Stay ◽

Critically Ill ◽

Length Of Hospital Stay ◽

Hospital Death ◽

Renin Angiotensin Aldosterone System ◽

Renin Angiotensin ◽

Icu Admission ◽

The Impact

Abstract BackgroundThe influence of renin-angiotensin-aldosterone system (RAAS) inhibitors on the critically ill COVID-19 patients with pre-existing hypertension remains uncertain. This study examined the impact of previous use of angiotensin-converting enzyme inhibitors (ACEi) and angiotensin receptor blockers (ARB) on the critically ill COVID-19 patients.MethodsData from an international, prospective, observational cohort study involving 354 hospitals spanning 54 countries were included. A cohort of 746 COVID-19 patients with pre-existing hypertension admitted to intensive care units (ICUs) in 2020 were targeted. Multi-state survival analysis was performed to evaluate in-hospital mortality and hospital length of stay up to 90 days following ICU admission.ResultsA total of 746 patients were included - 543 (73%) with pre-existing hypertension had received ACEi/ARBs before ICU admission, while 203 (27%) had not. Cox proportional hazards model showed that previous ACEi/ARB use was associated with a decreased hazard of in-hospital death (HR, 0.73, 95% CI, 0.58 to 0.93). Sensitivity analysis adjusted for propensity scores showed similar results for hazards of death. The average length of hospital stay was longer in ACEi/ARB group with 21.4 days (95% CI: 19.9 to 23.0 days) in ICU and 6.7 days (5.9 to 7.6 days) in general ward compared to non-ACEi/ARB group with 16.2 days (14.1 to 18.5 days) and 6.3 days (5.0 to 7.7 days), respectively. When analysed separately, there was insufficient evidence of differential effects between ACEi and ARB use on the hazards of death and discharge.ConclusionsIn critically ill COVID-19 patients with comorbid hypertension, use of ACEi/ARBs prior to ICU admission was associated with a reduced risk of in-hospital mortality following adjustment for baseline characteristics although patients with ACEi/ARB showed longer length of hospital stay.

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