Base excess and lactate as prognostic indicators for patients treated by extra corporeal life support after out hospital cardiac arrest due to acute coronary syndrome

Objective

To examine whether values of arterial base excess or lactate taken 3 h after starting ECLS indicate poor prognosis and if this can be used as a screening tool to follow Extra Corporeal Life Support after Out Hospital Cardiac Arrest due to acute coronary syndrome.

Design

Single Centre retrospective observational study.

Setting

University teaching hospital general adult intensive care unit.

Patients

15 consecutive patients admitted to the intensive care unit after refractory Out Hospital Cardiac Arrest due to acute coronary syndrome treated by Extra Corporeal Life Support.

Interventions

Arterial base excess and lactate concentrations were measured immediately after starting ECLS and every 3 h after.

Results

Both base excess and arterial lactate measured 3 h after starting ECLS effectively predict multiorgan failure occurrence and mortality in the following 21 h (area under the curve on receiver operating characteristic analysis of 0.97, 0.95 respectively). The best predictive values were obtained with a base excess level measured 3 h after starting ECLS of less than −10 mmol/l and lactate concentrations greater than 12 mmol/l. The combination of these two markers measured 3 h after starting ECLS predicted multiorgan failure occurrence and mortality in the following 21 h with a sensitivity of 70% and a specificity of 100%.

Conclusions

Combination of base excess and lactate, measured 3 h after starting ECLS, can be used to predict multiorgan failure occurrence and mortality in the following 21 h in patients admitted to an intensive care unit for refractory Out Hospital Cardiac Arrest due to acute coronary syndrome treated by Extra Corporeal Life Support. These parameters can be obtained simply and rapidly and help in the decision process to continue ECLS for refractory CA.     

The intensive care management,mortality and prognostic indicators in severe community-acquired pneumococcal pneumonia

Objective To determine mortality and factors that might predict outcome in severe community-acquired pneumococcal pneumonia treated by a standard protocol.Design Prospective, nonconcurrent study.Setting Respiratory intensive care unit (ICU) in a teaching hospital by positive blood culture.Patients 63 patients who were diagnosed by positive blood culture or Gram stain and culture of sputum or tracheal aspirate were included.Measurements and results Clinical features, severity scores including Acute Physiology and Chronic Health Evaluation (APACHE) II, organ failure and lung injury scores, and the clinical course in the ICU were documented; 79% of patients required mechanical ventilation. Bacteraemia was present in 34 patients (54%); there were no distinguishing clinical features between bacteraemic and non-bacteraemic cases. The overall mortality was 21%, with only 5 deaths (15% mortality) in the bacteraemic group. Shock and a very low serum albumin (<26 g/l) were the only clinical features that differentiated survivors from non-survivors; lung injury, APACHE II and multiple organ failure scores were all predictive of outcome. The positive predictive value and specificity in predicting death in individuals for the modified British Thoracic Society rule 1 were 26 and 64%; APACHE II>20 57 and 88%; >2 organ failure 64 and 92%; and lung injury >2 33 and 73%, respectively.Conclusions These results suggest that even in bacteraemic cases mortality should be below 25% with intensive care management and that conventional scoring systems, while predictive of group mortality, are unreliable in individuals.     

Short-term and long-term mortality in very elderly patients admitted to an intensive care unit

Objective To report short-term and long-term mortality of very elderly ICU patients and to determine independent risk factors for short-term and long-term mortalityDesign and setting Retrospective cohort study in the medical/surgical ICU of a tertiary university teaching hospital.Patients 578 consecutive ICU patients aged 80 years or older.Results Demographic, physiological, and laboratory values derived from the first 24 h after ICU admission. ICU mortality of unplanned surgical (34.0%) and medical patients (37.7%) was higher than that of planned surgical patients (10.6%), as was post-ICU hospital mortality (26.5% and 29.7% vs. 4.4%). Mortality 12 months after hospital discharge, including ICU and hospital mortality, was 62.1% in unplanned surgical and 69.2% in medical patients vs. 21.6% in planned patients. Only median survival of planned surgical patients did not differ from survival in the age- and gender-matched general population. Independent risk factors for ICU mortality were lower Glasgow Coma Scale score, higher SAPS II score, the lowest urine output over 8 h, abnormal body temperature, low plasma bicarbonate levels, and higher oxygen fraction of inspired air. High urea concentrations and admission type were risk factors for hospital mortality, and high creatinine concentration was an independent risk factor for 12-month mortality.Conclusion Mortality in very elderly patients after unplanned surgical or medical ICU admission is higher than after planned admission. The most important factors independently associated with ICU mortality were related to the severity of illness at admission. Long-term mortality was associated with renal function.This article is discussed in the editorial available at:     

早期乳酸清除率及动脉血碱剩余水平对严重创伤患者的预后评估价值

目的探讨早期乳酸清除率及动脉血碱剩余水平对严重创伤患者的早期预后评估价值。方法 73例严重创伤患者根据患者28天转归及乳酸清除率分为存活组(47例)和死亡组(26例)、高乳酸清除率(≥10%)组44例和低乳酸清除率(<10%)组29例,收集入急诊重症监护室(EICU)时及治疗后6小时的肝素抗凝动脉血乳酸浓度,计算6 h乳酸清除率,入EICU时动脉血碱剩余,24 h急性生理功能和慢性健康状况评分系统Ⅱ(APACHEⅡ)评分,比较其差异的统计学意义。结果存活组患者乳酸清除率、动脉血碱剩余明显高于死亡组(P<0.05),24 h APACHEⅡ评分明显低于死亡组(P<0.05);高乳酸清除率组24 h APACHEⅡ评分与死亡率明显低于低乳酸清除率组(P<0.05),动脉血碱剩余高于低乳酸清除率组(P<0.05)。结论早期乳酸清除率联合动脉血碱剩余水平是判断严重创伤患者预后的一个较好指标。     

Outcome and costs of intensive care

A retrospective follow-up study was performed on 238 consecutive admissions in the surgical ICU. The patients were grouped into four categories according to the therapeutic intervention scoring system: 14 in class I, 13 in class II, 81 in class III and 130 in class IV. The mortality rate during their stay in the ICU (5.4%), after discharge from the ICU (2.1%) and 2 years after discharge from the hospital (7.6%) was estimated. The functional state after discharge from the hospital showed that 74% of the patients resumed their normal work, 10% were handicapped but self-reliant, and 1.3% were dependent on others in order to pursue their daily activities. Fifty-two percent of the total hospitalization costs were generated during the ICU stage which accounted for 17.5% of the hospitalization period. Sixty percent of the total financial investment was spent on the group of survivors who resumed normal work. The mean cost per was $ 7095 or $ 1 per survivor per day of active life over an average span of 15 years survival after discharge from the hospital.     

Arterial carbon dioxide tension and outcome in patients admitted to the intensive care unit after cardiac arrest

Background

Arterial carbon dioxide tension (PaCO₂) affects neuronal function and cerebral blood flow. However, its association with outcome in patients admitted to intensive care unit (ICU) after cardiac arrest (CA) has not been evaluated.

Methods and results

Observational cohort study using data from the Australian New Zealand (ANZ) Intensive Care Society Adult-Patient-Database (ANZICS-APD). Outcomes analyses were adjusted for illness severity, co-morbidities, hypothermia, treatment limitations, age, year of admission, glucose, source of admission, PaO₂ and propensity score.We studied 16,542 consecutive patients admitted to 125 ANZ ICUs after CA between 2000 and 2011. Using the APD-PaCO₂ (obtained within 24 h of ICU admission), 3010 (18.2%) were classified into the hypo- (PaCO₂ < 35 mmHg), 6705 (40.5%) into the normo- (35–45 mmHg) and 6827 (41.3%) into the hypercapnia (>45 mmHg) group. The hypocapnia group, compared with the normocapnia group, had a trend toward higher in-hospital mortality (OR 1.12 [95% CI 1.00–1.24, p = 0.04]), lower rate of discharge home (OR 0.81 [0.70–0.94, p < 0.01]) and higher likelihood of fulfilling composite adverse outcome of death and no discharge home (OR 1.23 [1.10–1.37, p < 0.001]). In contrast, the hypercapnia group had similar in-hospital mortality (OR 1.06 [0.97–1.15, p = 0.19]) but higher rate of discharge home among survivors (OR 1.16 [1.03–1.32, p = 0.01]) and similar likelihood of fulfilling the composite outcome (OR 0.97 [0.89–1.06, p = 0.52]). Cox-proportional hazards modelling supported these findings.

Conclusions

Hypo- and hypercapnia are common after ICU admission post-CA. Compared with normocapnia, hypocapnia was independently associated with worse clinical outcomes and hypercapnia a greater likelihood of discharge home among survivors.     

Clinical profile, intensive care unit course, and outcome of patients admitted in intensive care unit with dengue

Purpose

The purpose of the study was to assess the clinical profile and course of dengue patients admitted to the intensive care unit (ICU) and to identify factors related to poor outcome.

Methods

All patients with dengue admitted to ICU over 2.5 years were included prospectively. Severity of illness was assessed by the Acute Physiology and Chronic Health Evaluation (APACHE) II score, and organ failure was determined by the Sequential Organ Failure Assessment score. Primary outcome measure was 28-day mortality. Logistic regression analysis was performed to identify factors predicting mortality.

Results

Data from 198 patients were analyzed. Mean age was 39.56 ± 17.1 years, and 61.1% were male. The commonest complaints were fever (96%) and rash (37.9%). Mean admission APACHE II and Sequential Organ Failure Assessment scores were 7.52 ± 7.8 and 4.52 ± 3.4, respectively. The commonest organ failure was coagulation (43.4%) followed by respiratory failure (13.1%). Vasopressors were required by 11.6%; and dialysis and mechanical ventilation were required by 7.6% and 9.1%, respectively. Mortality was 12 (6.1%); and on multivariate analysis, APACHE II score (odds ratio, 1.781; 95% confidence interval, 0.967-3.281; P = .048) could independently predict mortality.

Conclusions

Patients with dengue fever may require ICU admission for organ failure. Outcome is good if appropriate aggressive care and organ support are instituted. Admission APACHE II score may predict patients at higher risk of death.     

Prognostic factors in critically ill patients with hematologic malignancies admitted to the intensive care unit

Objective

Despite an improvement in the prognosis of patients with hematologic malignancies, the mortality of such patients transferred to the intensive care unit (ICU) is high. This study determined the predictors of mortality in a cohort of critically ill patients with hematologic malignancies admitted to the ICU.

Methods

We studied 227 critically ill patients with hematologic malignancies who were admitted to the ICU between April 2009 and December 2011. A cohort of consecutive patients with hematologic malignancies was reviewed retrospectively to identify clinically useful prognostic factors.

Results

The ICU mortality rate was 84.1%, and the in-hospital mortality rate was 89.9%. The ICU mortality was significantly higher in patients with acute leukemia than in those with other malignancies. A significant difference between survivors and nonsurvivors was found in neutropenia and its recovery during the ICU stay, presence of cardiac dysfunction, the need for an invasive mechanical ventilator, use of inotropic/vasopressor agents, platelet count, aspartate transaminase level, pH, and Acute Physiology And Chronic Health Evaluation II score. In the multivariate analysis, acute leukemia, need for invasive mechanical ventilator, use of inotropic/vasopressor agents, and Acute Physiology And Chronic Health Evaluation II scores were independently associated with a worse outcome in patients with hematologic malignancies admitted to the ICU.

Conclusion

Higher mortality in patients with hematologic malignancies admitted to the ICU is associated with more severe illness, as reflected by higher organ failure scores or respiratory or hemodynamic instability. Mortality is higher in patients with acute leukemia as compared with other hematologic malignancies.     

Prognostic factors and outcomes of patients with pulmonary hypertension admitted to the intensive care unit

Purpose

Patients with pulmonary hypertension (PH) can decompensate to the point where they require care in the intensive care unit (ICU). Our objective is to examine the outcomes and characteristics of patients with PH admitted to the ICU.

Methods

This is a retrospective study of 99 patients with PH who were admitted to the medical ICU of a single tertiary care center. Baseline characteristics, interventions during ICU admission, and ICU and 6-month outcome were documented. Univariate and multivariate logistic regressions were used to evaluate association of patient characteristics with mortality.

Results

Intensive care unit mortality was 30%, and 6-month mortality was 40%. Acute Physiology and Chronic Health Evaluation II score, World Health Organization Group 3 PH, and preexisting treatment with a prostacyclin at time of ICU admission were associated with worse outcome. Patients who received cardiopulmonary resuscitation had 100% mortality. The requirement for mechanical ventilation and dialysis was also associated with increased mortality. Pulmonary artery catheter placement was associated with reduced mortality, specifically if it was placed early during ICU admission and if associated with a change in the present management.

Conclusions

Mortality is high in critically ill patients with PH. The identification of prognostic baseline characteristics and interventions in the ICU is important and warrants further investigation.     

The outcome of children admitted to intensive care with meningococcal septicaemia

Objective To review our experience of children with meningococcal septicaemia, and to validate, in our group, severity scores used in different populations to predict outcome.Design Retrospective review of case notes and charts.Patients A total of 35 children were admitted to the paediatric intensive care unit (ICU) in the Royal Children's Hospital (RCH) in the 8 years between January 1985 and December 1992 with proven meningococcal septicaemia.Results Ages ranged from 4 months to 16 years, with a median age of 20 months. The median meningococcal score was 4 and the median PRISM score was 20, with scores above these being significantly associated with death (P<0.0001). Thirty-two children (91%) received infusions of colloid for hypovolaemia and twenty-nine (83%) received one or more inotropic drugs. Twenty-one children (60%) required mechanical ventilation for a median of 16.5 h (range 7–574). Seven children (20%) underwent plasmapheresis. Six children (17%) underwent haemofiltration and two (6%), peritoneal dialysis. One patient received extracorporeal membrane oxygenation (ECMO) because of circulatory failure. Twenty-one children (60%) developed disseminated intravascular coagulation, renal failure and/or skin or limb necrosis. The overall survival was 66%, and all survivors are functionally normal.Conclusion The mortality from the disease remains at 34% despite the technological advances in intensive care. The PRISM and meningococcal scores are useful in predicting outcome. Novel methods of treatment (e.g., plasmapheresis or ECMO) may be valuable.     

Community-acquired pneumonia of diverse aetiology: prognostic features in patients admitted to an intensive care unit and a “severity of illness” score

In a retrospective study of 73 patients with community-acquired lobar pneumonia of diverse aetiology admitted to an intensive care unit, an attempt was made to identify those factors among the demographic and clinical features and results of initial laboratory investigations that were predictive of the ultimate outcome. A lower mean white cell count (p=0.03), platelet count (p=0.02), total serum protein (p=0.005) and albumin (p=0.02) and a higher mean serum creatinine (p=0.03) and phosphate level (p=0.02) appeared to be predictive of a poor prognosis. The most significant variable predictive of mortality, was the presence of bacteraemia (p=0.0005). Severity of illness scoring systems by omitting microbiological data appear to underestimate predicted patient mortality. The mortality rate of critically ill patients with community-acquired lobar pneumonia remains high, despite advances in antimicrobial chemotherapy and intensive care unit facilities, particularly in the presence of certain negative prognostic factors of which the presence of bacteraemia is the most important.     

Outcomes for haematological cancer patients admitted to an intensive care unit in a university hospital

Background

Haematological cancer (HC) patients are increasingly requiring intensive care (ICUs). The aim of this study was to investigate the outcome of HC patients in our ICU and evaluate 5 days-full support as a breakpoint for patients’ re-assessment for support.

Factors associated with anemia in patients with cancer admitted to an intensive care unit

Purpose

The study aimed to evaluate the relative impact of clinical and demographic factors associated with the prevalence and incidence of anemia (hemoglobin [Hb] <12 g/dL) in critically ill patients with cancer.

Materials and Methods

We performed an electronic chart review for demographic and clinical data of adult patients with cancer with or without anemia admitted to the intensive care unit (ICU). Prevalence of anemia was determined at admission, and incidence determined if anemia developed during ICU stay. Anemia was classified as mild, moderate, or severe. The additive impact of clinical and demographic factors was evaluated by using a hierarchical linear regression model.

Results

A total of 4705 patients were included in the study. The prevalence and incidence of anemia were 68.0% and 46.6%, respectively. In prevalent cases, we found that the clinical covariates modified sequential organ failure assessment score, admission to the medical ICU, prior chemotherapy, diagnosis of hematologic cancer, and length of hospital stay before ICU admission explained 18.7% of the variance in the model, whereas the demographic covariates (age, sex, and race) explained only an additional 0.6%. The pattern was similar for incidence cases.

Conclusions

Clinical factors are more influential than demographic factors in the observed rates of prevalence and incidence of anemia in the ICU; thus, protocols are needed to identify subgroups of patients with cancer who could benefit from novel management strategies.     

Outcomes and prognostic factors of patients with lung cancer and pneumonia-induced respiratory failure in a medical intensive care unit: A single-center study

Purpose

To evaluate the outcomes and prognostic factors of 28-day mortality following medical intensive care unit (MICU) admission of patients with lung cancer and pneumonia-induced respiratory failure.

Materials and methods

Patients admitted to the MICU of a tertiary referral hospital between 2000 and 2009 were retrospectively studied.

Results

In total, 143 patients were included. Their mean age was 65 ± 8 years and 94% were male. The 28-day mortality rate was 57%. Multivariate analysis was performed to identify variables associated with 28-day mortality. At 72 hours after admission, a history of radiotherapy (OR = 2.80, 95% CI: 1.15-6.78), Pao₂/Fio₂ (P/F) ratio at admission of < 100 mmHg (OR = 5.62, 95% CI: 2.10-15.07), P/F ratio after 72 hours of < 100 mmHg (OR = 4.61, 95% CI: 1.24-17.15), and arterial pH after 72 hours of < 7.30 (OR = 5.78, 95% CI: 1.15-28.89) were associated with increased mortality.

Conclusions

The prognosis of patients with lung cancer and severe pneumonia after 72 hours of MICU management mainly depends on the severity of the underlying lung injury, which is reflected by a history of radiotherapy and a low P/F ratio, rather than on cancer stage or disease status.     

Validation of the SAPS 3 admission prognostic model in patients with cancer in need of intensive care

Objectives To validate the SAPS 3 admission prognostic model in patients with cancer admitted to the intensive care unit (ICU).Design Cohort study.Setting Ten-bed medical–surgical oncologic ICU.Patients and participants Nine hundred and fifty-two consecutive patients admitted over a 3-year period.Interventions None.Measurements and results Data were prospectively collected at admission of ICU. SAPS II and SAPS 3 scores with respective estimated mortality rates were calculated. Discrimination was assessed by area under receiver operating characteristic (AUROC) curves and calibration by Hosmer–Lemeshow goodness-of-fit test. The mean age was 58.3 ± 23.1 years; there were 471 (49%) scheduled surgical, 348 (37%) medical and 133 (14%) emergency surgical patients. ICU and hospital mortality rates were 24.6% and 33.5%, respectively. The mean SAPS 3 and SAPS II scores were 52.3 ± 18.5 points and 35.3 ± 20.7 points, respectively. All prognostic models showed excellent discrimination (AUROC ≥ 0.8). The calibration of SAPS II was poor (p < 0.001). However, the calibration of standard SAPS 3 and its customized equation for Central and South American (CSA) countries were appropriate (p > 0.05). SAPS II and standard SAPS 3 prognostic models tended somewhat to underestimate the observed mortality (SMR > 1). However, when the customized equation was used, the estimated mortality was closer to the observed mortality [SMR = 0.95 (95% CI = 0.84–1.07)]. Similar results were observed when scheduled surgical patients were excluded.Conclusions The SAPS 3 admission prognostic model at ICU admission, in particular its customized equation for CSA, was accurate in our cohort of critically ill patients with cancer.This work was performed at the Intensive Care Unit, Instituto Nacional de Cancer, Rio de Janeiro, Brazil. Financial support: institutional departmental funds. Conflicts of interest: none.     

重症监护病房患者低磷血症的发生及对预后的影响

目的 调查重症监护病房(ICU)患者低磷血症的发生情况,研究不同血磷水平对患者预后的影响.方法 观察2010年4月至11月入住盛京医院ICU 147例患者的血磷水平及低磷血症的发生率,比较轻、中、重度血磷水平患者间急性生理学与慢性健康状况评分系统Ⅱ( APACHEⅡ)评分、住ICU时间、主要实验室指标以及病死率的差异;比较生存和死亡患者住ICU期间血磷的变化.建立血磷水平与是否存活患者之间的受试者工作特征曲线(ROC曲线),探讨血磷水平对预测患者预后的意义.结果 77.6％的患者在入住ICU期间出现低磷,轻度21例、中度70例、重度23例,其中63.3％的患者出现中至重度的低磷;显著低磷的患者不仅APACHEⅡ评分(分)较高(轻度18.2±6.0,中度21.4±7.6,重度25.6±8.8,正常18.9±8.8),呼吸机使用时间(d)延长(轻度6.6±5.1,中度11.3±9.5,重度15.7±10.4,正常6.7±5.9),住ICU时间(d)较长(轻度9.7±6.4,中度10.6±8.2,重度18.9±13.1,正常9.9±7.1),而且病死率随之升高(轻度14.3％,中度25.7％,重度39.1％,正常9.1％).ICU患者的总病死率(22.4％)与低磷的程度呈显著负相关(r=-0.225,P=0.01);血磷＜0.40 mmol/L时预测患者存活的敏感性为78.6％,特异性为51.5％,提示预后较差.结论 大部分ICU患者血磷处于相对较低的水平.ICU患者容易合并低磷血症,重度低磷提示ICU患者预后较差.     

Predictive risk scales for development of pressure ulcers in pediatric patients admitted to general ward and intensive care unit

BACKGROUNDMore than ten special scales are available to predict the risk of pressure ulcers in children. However, the performances of those scales have not yet been compared in China. AIMTo compare the Waterlow, Braden Q, and Glamorgan scales, and identify more suitable pressure ulcer evaluation scale for the pediatric intensive care unit (PICU).METHODSTrained nurses used the Waterlow, Braden Q, and Glamorgan scales to assess pediatric patients at Sun Yat-sen Memorial Hospital (China) within 24 h of admission from May 2017 to December 2020 in two stages. Skin examination was carried out to identify pressure ulcers every 3 d for 3 wk. RESULTSThe incidence of pressure ulcers was 3/28 (10.7%) in the PICU and 5/314 (1.6%) in the general pediatric ward. For children in the general ward, the Waterlow, Braden Q, and Glamorgan scales had comparable area under the operating characteristic curve (AUC) of 0.870, 0.924, and 0.923, respectively, and optimal cut-off values of 14, 14, and 29 points. For PICU, the Waterlow, Braden Q, and Glamorgan scales had slightly lower AUC of 0.833, 0.733, and 0.800, respectively, and optimal cut-off values of 13, 16, and 27 points. Braden Q demonstrated a satisfactory specificity, and during the second stage of the study for PICU patients, the AUC of the Braden Q scale was 0.810, with an optimal cut-off value of 18.35 points.CONCLUSIONThe Waterlow, Braden Q, and Glamorgan scales have comparable performance, while the Braden Q scale demonstrates a better specificity and can be successfully used by pediatric nurses to identify patients at high risk of pressure ulcers in PICU.