Cardiovascular Intensive Care Unit Research Articles

Baseline characteristics and outcomes of patients admitted to intensive cardiovascular care unit

Abstract Background Intensive Cardiovascular Care Unit (ICCU) is a crucial element of care for critically ill patients suffering from cardiovascular disease. Therefore, we aimed to provide data on the characteristics and outcomes of patients admitted to ICCU. Methods Data was obtained from One Intensive Cardiovascular Care Unit (One ICCU) Registry, a collaborative multicentre research network of ICCU. A total of 10 centres participated in this registry, eight centres were ICCU level III and the remaining were ICCU level II. Each participating centre collected data of patients admitted to ICCU from August 2021 until August 2023. Data recorded were demographics, past medical history, diagnosis, treatment, complications, outcome, and 30-day follow up. Only first ICCU admission data from each patient was analysed to prevent outcome-related bias from readmission data. Results 12,950 patients were included in the analysis of which 9308 (71.9%) were male and the median age was 59 (51-66) years. Most common diagnosis on admission was acute coronary syndromes (69.8%) followed by acute heart failure (34.6%) and arrhythmias (25.8%). Cardiovascular complication most frequently during ICCU stay was cardiogenic shock (18.9%) while for non-cardiovascular complication was acute kidney injury (17.4%). Cardiac arrest (61.2%), respiratory failure (43%), and sepsis (38%) were among the highest case fatality rates for ICCU complications. Overall mortality was found to be approximately 11.4%, 14.3%, and 15.2% for intra ICCU, in-hospital and 30-day mortality, respectively. Non-cardiovascular variables which were independently associated with 30-day mortality were pre-existing asthma (OR 2.12, CI 1.315 – 3.411, p=0.002) and chronic kidney disease (OR 1.67, CI 1.308 – 2.139, p<0.001), initial diagnosis of respiratory failure (OR 4.01, CI 3.373 – 4.773, p<0.001), haemorrhagic stroke(OR 3.46, CI 1.396 – 8.574, p=0.007), ischaemic stroke (OR 3.12, CI 2.248 – 4.345, p<0.001), sepsis (OR 2.00, CI 1.715 – 2.334, p<0.001), urinary tract infection (OR 1.60, CI 1.228 – 2.226, p=0.001) and pneumonia (OR 1.29, CI 1.120 – 1.482, p<0.001), as well as complications during ICCU stay which consisted of haemorrhagic stroke (OR 3.91, CI 1.062 – 14.414, p=0.040), respiratory failure (OR 2.91, CI 2.081 – 4.070, p<0.001), sepsis (OR 2.17, CI 1.686 – 2.790, p<0.001), ischaemic stroke (OR 1.84, CI 1.074 – 3.139, p=0.026), and urinary tract infection (OR 1.39, CI 1.039 – 1.851, p=0.026). Conclusion Patients admitted to our ICCU were relatively younger and the cause for ICCU admission was still predominated by acute coronary syndrome. Despite that, non-cardiovascular condition also warrants clinicians attention due to its significant role as predictors of mortality. Non-cardiac complications that arise during ICCU care also emphasize the importance of collaboration with specialists in other disciplines to improve patient’s outcomes.Diagnosis (A) and Case Fatality (B)Mortality Predictors at 30 days

VExUS score improvement is associated with better outcomes in acute decompensated heart failure

Abstract Background Venous Excess Ultrasound Score (VExUS) has recently emerged as a non-invasive tool for venous congestion assessment in acute decompensated heart failure (ADHF). Although VExUS is associated with cardiorenal syndrome, the prognostic role regarding hard outcomes in ADHF is still unknown. Purpose To evaluate whether dynamic changes in VExUS within 72 hours after Cardiovascular Intensive Care Unit (CICU) admission is associated with in-hospital mortality in ADHF patients. Methods Prospective cohort study enrolling consecutive patients with ADHF admitted to CICU of a tertiary public hospital. VExUS evaluations ranging from 0 (no congestion) and 3 (severe congestion) and assessing the inferior vena cava, hepatic, and portal veins flow, were initially performed within 24 hours of admission and re-evaluated at 72 hours (third day) after treatment initiation. Changes in VExUS scores were compared between these two time points. Mann-Whitney test and logistic regression was performed to evaluate VExUS improvement association with mortality. Results Between October 2022 and January 2024, 81 patients were admitted to the CICU due to ADHF. Following the exclusion of 10 patients who were not assessed within the first 24 hours, 71 patients were included in the final analysis. Mean age was 65 ± 13.3 years, with 66.7% being male. Ischemic etiology was identified in 40.7%, and atrial fibrillation was present in 34.6%. Mean left ventricular ejection fraction was 27.4% ± 12.2, and 64.2% had right ventricular dysfunction. Upon admission, 73.2% were classified as B and 23.9% as C hemodynamic profiles. Overall in-hospital mortality was 25.9%. In-hospital mortality across VExUS categories assessed in the third day was 16.7%, 12.5%, 28.6% e 40%, for VExUS 0-3, respectively. The median VExUS variation between the two time points was greater in patients who survived [-1 vs. 0; p=0.030] and VExUS improvement at 72 hours was associated with a 46% decrease in hospital mortality for each class reduction (OR=0.536; 95% CI 0.29-0-81; p=0.043 - Figure 1). Conclusion Improvement in VExUS score between admission and 72 hours is associated with reduced in-hospital mortality. This finding highlights the potential role of dynamic VExUS monitoring for identifying delayed treatment response patients. Thus, changes in VExUS emerged as a prognostic tool offering a pathway to potentially intensify treatment strategies for high-risk patients with ADHF.VExUS score changes within 72 hours

Impact of late reperfusion therapy in patients with inferior ST-segment elevation myocardial infarction and right ventricular dysfunction: one size never fits all

Abstract Background A significant proportion of ST-segment elevation myocardial infarction (STEMI) patients present late to the emergency room with limited evidence of benefit of reperfusion after 12 hours of symptom onset. Inferior myocardial infarction (MI) with right ventricle (RV) dysfunction is associated with high morbidity and mortality, however, the RV has a unique physiology that allows it to withstand ischemia better and recover faster. Purpose To compare adverse in-hospital cardiovascular events in latecomers with inferior STEMI and RV dysfunction admitted to a cardiovascular intensive care unit (CICU) from a low-to-middle-income country, who underwent late reperfusion treatment versus conservative treatment. Methods A retrospective cohort study was conducted from March 2022 to April 2023. Patients with inferior STEMI and RV dysfunction who received late reperfusion treatment were included. RV dysfunction was defined as a TAPSE <17 mm, tricuspid annular systolic velocity on TDI <9.5 cm/s, or a fractional area change <35%. Late reperfusion was defined as primary percutaneous coronary intervention (PCI) performed after 12 hours of symptom onset or rescue PCI after 12 hours of failed fibrinolysis. The primary outcome was in-hospital all-cause mortality. Secondary outcomes were cardiovascular death, reinfarction, stroke, cardiogenic shock, and mechanical complications. Results During the specified period, a total of 106 patients met the inclusion criteria from a total of 1,786 patients admitted to the CICU in our center. Only 60 patients underwent late PCI, accounting for 56% of the cases, with a median time of onset of symptoms to reperfusion of 19.4 hours (IQR: 15.7, 30.2). The average age was 66.5 ± 10.4 years, and 28% were women. Although the all-cause death rate was lower among late PCI group (13.3% vs 26.1%; p=0.096), this difference did not reach statistical significance in the bivariate analysis. Stratified by cardiogenic shock, a lower rate of all-cause mortality was also observed (33% vs 55%, p=0.15). The incidence of reinfarction was significantly lower in the late PCI group (0% vs 13%, p=0.004). In the multivariate analysis, adjusting for those who underwent PCI between 12-48 hours, revascularization of latecomers was independently associated with a significant reduction of mortality (adjusted OR 0.22; 95% CI 0.05-0.92; p=0.038). In a post-hoc analysis, late PCI showed a lower association with the composite outcome of all-cause mortality and reinfarction (adjusted OR 0.16, 95% CI 0.04-0.56; P=0.004). Conclusion(s) Our study demonstrates that implementing a reperfusion strategy in latecomers with inferior STEMI and RV dysfunction significantly reduces the risk of in-hospital mortality and reinfarction. This suggests a potential benefit of expanding the therapeutic window for PCI in this high-risk population. However, prospective studies are needed to conclude these preliminary findings.

Impact of an Adult Congenital Heart Disease Order Set in a Pediatric Cardiac Intensive Care Unit.

Background: Patients with congenital heart disease (CHD) are increasingly surviving to adulthood. Given their age- and condition-specific needs, the optimal postoperative setting for these patients is not yet determined. This study aims to evaluate the utility of an adult-specific order set in improving clinical outcomes for these patients in a pediatric cardiovascular intensive care unit (ICU). Methods: Adults with CHD (ACHD) admitted to the cardiovascular ICU following cardiac surgery at a pediatric tertiary care center were identified for a retrospective cohort study. Health care delivery metrics and clinical outcomes of participants who received the adult-specific order set were compared with control patients admitted prior to the intervention. Categorical outcomes were compared using the χ2 test of independence or Fisher exact test, and continuous outcomes were assessed using the t test. Results: A total of 130 ACHD patients received the intervention, with no significant differences observed in clinical outcomes when compared with 89 controls. While there was additionally no reduction in hospital-related mortality (2.3% vs 7.8%, RR 0.3; P = .1), clinician ordering behaviors were better aligned with best-practices following the intervention. Among patients with moderate or greater anatomic complexity, a post hoc analysis demonstrated reduced in-hospital mortality from those who received the adult order set. Conclusions: The implementation of an adult-specific order set in a pediatric care setting did not improve clinical outcomes for all ACHD patients. Patients with moderate and greater anatomic complexity did see a mortality benefit, suggestive that targeted electronic tools may most benefit those who have the highest risk.

Associations Between Clinical Factors and Postoperative Thrombosis in Pediatric Cardiac Surgery Patients: A Single-Center Retrospective Study.

Postoperative thrombosis is a significant complication in pediatric cardiac surgery patients, contributing to morbidity and mortality. Identifying clinical factors associated with thrombosis can improve patient outcomes by guiding early detection and intervention. This study aimed to assess factors associated with postoperative thrombosis or thromboembolism in pediatric patients under 12 months old who underwent surgery for congenital heart disease (CHD). Design, Setting, and Participants: This retrospective cohort study analyzed electronic medical records from pediatric patients admitted to the Pediatric Cardiovascular Intensive Care Unit (PCICU) at the German Paediatric Heart Center, Bonn, between March 1, 2020, and March 1, 2021. A total of 197 children under 12 months old who underwent cardiac surgery were included in the analysis. Thrombosis was diagnosed postoperatively using imaging modalities such as ultrasound, echocardiography, and computed tomography. The primary outcome was the incidence of thrombosis and its association with clinical factors such as age, central venous catheter (CVC) duration, CRP levels, and D-dimer levels. Among 197 patients, the incidence of thrombosis was 8.63%, predominantly venous (70.6%). Initial associations were observed between thrombosis and younger age, lower body weight, higher hematocrit, cyanosis, longer central venous catheter (CVC) use, and elevated C-reactive protein (CRP) and d-dimer levels. Receiver operating characteristic analysis indicated a higher risk in patients with d-dimer levels above 5.47 mg/L. The stepwise multiregression analysis identified longer CVC duration in situ (β = 0.553; p < 0.001), higher CRP levels (β = 0.217; p = 0.022), and younger age at admission (β = -0.254; p = 0.006) as significant predictors of thrombosis. Decision tree analysis identified CVC use longer than 12.5 days and CRP levels above 118.01 mg/L as the most critical risk factors. Postoperative thrombosis is a notable risk in pediatric CHD patients, particularly in neonates. Prolonged CVC use and elevated CRP levels are critical risk factors. Routine monitoring of D-dimer and CRP levels, along with timely sonographic screening, can aid early thrombosis detection and intervention. Further research is warranted to optimize thrombosis prevention strategies in this population.

Impact of Nighttime Cardiovascular Intensive Care Unit Staffing on Failure to Rescue and Revenue

Failure to rescue (FTR) is mortality following postoperative complication. We investigated the impact of nighttime intensivist staffing and FTR after cardiac surgery. We included patients who underwent cardiac surgery to examine FTR, defined as mortality in those who experienced a Society of Thoracic Surgeons-defined major complication. Era 2 (7/2021-6/2023) and Era 1 (7/2016-6/2021) were characterized by presence and absence of nighttime intensivists staffing, respectively. Complications and FTR rates, daily ICU census, and relative value units (RVUs) were compared. Among 5,654 patients, 17% (284/1,661) in Era 2 had at least one complication versus 19% (769/3,993) in Era 1 (P=0.057). Among patients with complications, FTR incidence was 8% (22/284) in Era 2 versus 19% (145/769) in Era 1 (P<0.001). Daily average ICU census did not change (12.3 in Era 2 vs. 12.0 in Era 1, P=0.386). Comparing mean annual RVUs during the two fiscal years in Era 2 (35,613/year) to what would have been expected based on the last two fiscal years of Era 1 (26,744/year), a significant increase of +8,870/year was observed (95% CI=3,876-13,863, P=0.028). Multivariable analyses found no difference in the risk of major complications comparing Era 2 versus Era 1 (OR=1.04, 95% CI=0.89-1.23, P=0.602), and a 59% reduction in FTR risk in Era 2 versus Era 1 (OR=0.41, 95% CI=0.25-0.67, P<0.001). Nighttime ICU coverage reduced FTR rates in post-cardiotomy patients while complication rates and ICU census remained stable. Furthermore, the increase in RVUs suggested an economically sustainable model.

Risk factors for infection after carbapenem-resistant Acinetobacter baumannii colonization

PurposePredicting infection risk in carbapenem-resistant Acinetobacter baumannii (CRAB) colonized patients may help in improving timely appropriate antibiotic therapy. This study aims to explore risk factors for developing infections in hospitalized patients with previous CRAB colonization.MethodsWe performed an observational retrospective cohort study at ASST Sette Laghi-Varese Hospital between January 2020 and December 2022. All consecutive adult (> 18 years old) hospitalized patients with documented colonization by CRAB at any anatomical site or with CRAB infections preceded by CRAB colonization were included. Univariate and multivariate analyses were performed to investigate infection risk factors.ResultsOverall, 144 patients were included in the study: 104 colonized only and 40 infected patients. Colonization and infection rates significantly changed over the years (2020–2022, p < 0.001). The incidence of infections in CRAB carriers was 27.8% (40/144). Median time from colonization to infection was 4 days (IQR 1-8.5). Overall, inhospital mortality was 32.7% and 55.0% in colonized only and infected patients, respectively. At the multivariable logistic regression cardiovascular disease (OR 5.83, 95% CI 1.12–30.43, p = 0.037), COVID-19 (OR 3.72, 95% CI 1.16–11.91, p = 0.027) and intensive care unit (ICU) admission (OR 8.83, 95% CI 2.94–26.51, p < 0.001) were risk factors independently associated with cardiovascular disease CRAB infection after colonization.ConclusionsWe observed an increased infection risk in patients colonized with CRAB with cardiovascular disease, COVID-19 and admitted in ICU setting. Additional evidence is needed to identify predictors of infection in colonized patients.

Association between peak troponin level and prognosis among patients admitted to intensive cardiovascular care unit

IntroductionHigh-sensitivity cardiac troponin (hs-cTn) is a key biomarker for myocardial injury, yet its prognostic value in intensive cardiovascular care units (ICCU) remains poorly understood. We aimed to assess the association between peak hs-cTn levels and prognosis in ICCU patients. MethodsAll patients admitted to a tertiary care center ICCU between July 2019 – July 2023 were prospectively enrolled. Patients were divided into five groups according to their peak hs-cTnI levels: A) hs-cTnI <100 ng/L; B) hs-cTnI of 100–1000 ng/L; C) hs-cTnI of 1000–10,000 ng/L; D) hs-cTnI of 10,000–100,000 ng/L and E) hs-cTnI ≥100,000 ng/L. The primary outcome was all-cause mortality at one year. ResultsA total of 4149 patients (1273 females [30.7 %]) with a median age of 69 (IQR 58–79) were included. Group E was highly specific for myocardial infarction (97.4 %) and especially for ST segment elevation myocardial infarction (STEMI) (87.5 %). Patients in group E were 56 % more likely to die at 1-year in an adjusted Cox model (95 % CI 1.09–2.23, p = 0.014) as compared with group A. Subgroup analyses revealed that among STEMI patients, higher peak hs-cTnI levels were not associated with higher mortality rate (HR 1.04, 95 % CI 0.4–2.72, p = 0.9), in contrast to patients with NSTEMI (HR 7.62, 95 % CI 1.97–29.6, p = 0.003). ConclusionsPeak hs-cTnI levels ≥100,000 ng/L were linked to higher one-year mortality, largely indicative of large myocardial infarctions. Notably, the association between elevated hs-cTnI levels and mortality differed between STEMI and NSTEMI patients, warranting further investigation.

Simulation Training to Increase Holding of Fragile Infants in Cardiac Intensive Care Units.

Promoting bonding and neurodevelopmental care is an important element in the cardiovascular intensive care unit (CICU); however, holding of infants by family members is inconsistently practiced. This quality improvement study aimed to safely increase the holding of medically complex infants in the CICU by developing a holding guideline and offering simulation-based staff education. Using consensus methodology and high-fidelity simulation, an expert work group created a holding guideline and training to increase staff confidence and competence in holding critically ill infants in the CICU. The effectiveness of the intervention was tested via a postintervention survey used to assess participants' confidence in and comfort with holding critically ill infants and elicit suggestions for further support. Participants who engaged with the mannequin were surveyed to assess the validity of the simulation trainer. After the intervention, participants (N = 130) reported increased confidence with infant holding (76%) and greater confidence in preparing families to hold their infants. Participants (95%) strongly agreed that the simulation enabled realistic, safe practice in holding a medically complex infant with catheters and tubes. More years of experience and engagement with the simulation trainer were associated with increased posttraining confidence. Participants cited increased resources, practice, and adherence monitoring as key supports for infant holding. Expert group consensus with high-fidelity simulation training is a feasible, safe, and reliable method for teaching higher risk skills and guiding protocol development.

DEFERRED CLOSURE IN THE SUCCESSFUL TREATMENT OF POST-INFARCTION VENTRICULAR SEPTAL RUPTURE

Ventricular septal rupture is a rare but highly lethal mechanical complication of acute myocardial infarction. The gold-standard treatment is surgical repair; with conservative treatment, 90% mortality is estimated in the following two months. We present the case of an 81-year-old patient with post-infarction SVR who underwent angioplasty and was later admitted to the intensive care unit to assess hemodynamics to prepare him for delayed closure. Surgical repair of the defect was performed 21 days later, and the patient was discharged to the cardiovascular intensive care unit with adequate postoperative evolution.

Optimizing outcomes: Impact of palliative care consultation timing in the cardiovascular intensive care unit

BackgroundICU patients and their families experience significant stress due to illness severity and prognostic uncertainty, making palliative care (PC) integral for symptom management, family support, and end-of-life care goals. The impact of PC in the Cardiac Intensive Care Unit (CICU) remains unstudied. ObjectiveWe explore the impact of early palliative care consultation (PCC) on patient outcomes in the CICU, including mortality, length of stay, and family meeting frequency. MethodsThis retrospective study at MedStar Washington Hospital Center included 209 adult patients admitted to the CICU between December 2021 and June 2022 receiving PCC. We compared outcomes between those receiving early (<72 h) and late (>72 h) PCC, including mortality, length of stay, and family meeting frequency. Statistical analysis included Wilcoxon rank sum tests, Chi-squared tests, Fisher's exact test, and Poisson regression models. ResultsThe study included 209 patients admitted to the (M age = 68 years, SD = 14; 45 % female; 62 % Black, 30 % White) who received PCC, most (79 %) within 72 h. Early PCC was associated with shorter CICU stays (median, 3 vs. 5.5 days; p = 0.005). Early PCC patients had higher odds of family meetings (IRR=3.59; p < 0.001) and experienced a change in code status sooner (median 1 day vs. 3 days, p < 0.001). Late PCC patients were more likely to undergo tracheostomy (13.6% vs. 2.4 %; p = 0.007), cardioversion (9.1% vs. 1.8 %; p = 0.037), and have PEG tubes placed (13.6% vs. 2.4 %; p = 0.007). ConclusionsEarly PCC in the CICU is associated with shorter CICU stays, fewer procedures, and more frequent family meetings.

Utilizing APACHE IV and GRACE Scores as Predictors of Mortality Compared with SAPS-3 Scores for Acute Coronary Syndrome Patients in the Cardiac Vascular Care Unit

Background: Acute coronary syndromes (ACS) frequent cause of hospitalization in the cardiovascular care unit. Positive predictive data are being developed and shown to be effective for patients with ACS; the Global Registry of Acute Coronary Events, or GRACE, has shown the most accurate outcomes. In contrast, prognostic scores derived from diverse cohorts of critically ill patients are predominantly employed by intensive care clinicians. Prominent examples of such scores include APACHE IV and SAPS 3. The objective of this research endeavor was to assess and contrast the efficacy of these three scores across an unselected sample of ACS cases.. Objective: The Cardiovascular Care Unit of RSUD Dr. Saiful Anwar Malang treats Acute Coronary Syndrome patients. This study compares SAPS 3, GRACE, and APACHE IV score parameters through calibration and discrimination tests to predict patient mortality. Material and Methods: The study included all ACS patients admitted from August 2021 to November 2023. Hospital mortality prediction was assessed using score calibration and discrimination. Result: There were 843 patients in total included. SAPS 3 could not be calibrated appropriately, whereas APACHE IV and GRACE could. Across all scores, discrimination was exceptional (area under the curve values of 0.811 for APACHE IV, 0.740 for GRACE, and 0.732 for SAPS 3). Conclusion: GRACE and APACHE IV were calibrated thoroughly in this cohort of intensive care unit-admitted ACS patients; however, SAPS 3 lacked such calibration. All three scores exhibited exceptional discrimination. GRACE and APACHE IV may be utilized to predict the risk of mortality in patients with ACS. Keyword: Acute Physiology and Chronic Health Evaluation Score, Global Registry of Acute Coronary Events, Intensive Cardiovascular Care Unit, Simplified Acute Physiology Score 3.

Comparative genomics of IncQ1 plasmids carrying blaGES variants from clinical and environmental sources in Brazil

IncQ-type plasmids have become important vectors in the dissemination of blaGES among different bacterial genera and species from different environments around the world, and studies estimating the occurrence of Guiana extended-spectrum (GES)-type β-lactamases are gaining prominence. We analyzed the genetic aspects of two IncQ1 plasmids harboring different blaGES variants from human and environmental sources. The blaGES variants were identified using polymerase chain reaction (PCR) in Aeromonas veronii isolated from hospital effluent and Klebsiella variicola isolated from a rectal swab of a patient admitted to the cardiovascular intensive care unit in a different hospital. Antimicrobial-susceptibility testing and transformation experiments were performed for phenotypic analysis. Whole-genome sequencing was performed using Illumina and Oxford Nanopore platforms. The comparative analysis of plasmids was performed using BLASTn, and the IncQ1 plasmids showed a high identity and similar size. A. veronii harbored blaGES-7 in a class 1 integron (In2061), recently described by our group, and K. variicola carried blaGES-5 in the known class 1 integron. Both integrons showed a fused gene cassette that encodes resistance to aminoglycosides and fluoroquinolones, with an IS6100 truncating the 3′-conserved segment. The fused genes are transcribed together, although the attC site is disrupted. These gene cassettes can no longer be mobilized. This study revealed a mobilome that may contribute to the dissemination of GES-type β-lactamases in Brazil. Class 1 integrons are hot spots for bacterial evolution, and their insertion into small IncQ-like plasmids displayed successful recombination, allowing the spread of blaGES variants in various environments. Therefore, they can become prevalent across clinically relevant pathogens.

Trajectories in Intensity of Medical Interventions at the End of Life: Clustering Analysis in a Pediatric, Single-Center Retrospective Cohort, 2013-2021.

Pediatric deaths often occur within hospitals and involve balancing aggressive treatment with minimization of suffering. This study first investigated associations between clinical/demographic features and the level of intensity of various therapies these patients undergo at the end of life (EOL). Second, the work used these data to develop a new, broader spectrum for classifying pediatric EOL trajectories. Retrospective, single-center study, 2013-2021. Four hundred sixty-one bed tertiary, stand-alone children's hospital with 112 ICU beds. Patients of age 0-26 years old at the time of death. None. Of 1111 included patients, 85.7% died in-hospital. Patients who died outside the hospital were older. Among the 952 in-hospital deaths, most occurred in ICUs (89.5%). Clustering analysis was used to distinguish EOL trajectories based on the presence of intensive therapies and/or an active resuscitation attempt at the EOL. We identified five simplified categories: 1) death during active resuscitation, 2) controlled withdrawal of life-sustaining technology, 3) natural progression to death despite maximal therapy, 4) discontinuation of nonsustaining therapies, and 5) withholding/noninitiation of future therapies. Patients with recent surgical procedures, a history of organ transplantation, or admission to the Cardiovascular ICU had more intense therapies at EOL than those who received palliative care consultations, had known genetic conditions, or were of older age. In this retrospective study of pediatric EOL trajectories based on the intensity of technology and/or resuscitation discontinued at the EOL, we have identified associations between these trajectories and patient characteristics. Further research is needed to investigate the impact of these trajectories on families, patients, and healthcare providers.

Case Report: Wellens syndrome in acute critical coronary occlusion saved by collateral

Background It is important and challenging to distinguish between acute myocardial infarction and Wellens syndrome due to its time to intervention. Difficulties in differentiating between subtypes could mean the patients are overtreated or receive undertreatment. Case report A 57-year-old man was referred to our emergency ward with acute onset of chest pain. Electrocardiograms changes were suggestive of type A Wellens syndrome. Nitroglycerin was administrated, the patient's chest pain disappeared, and we planned an early invasive strategy. He had a previous documented electrocardiogram before he went for catheterization and based on the second electrocardiogram changes were suggestive of an ST-elevation. As the result of the invasive strategy, it was found that there was single-vessel disease, critical occlusion in the middle of the left anterior descending artery coronary artery with collateral from the right coronary artery. After two days of observation in the Intensive Cardiovascular Care Unit, the patient improved and was transferred to Low Care Unit. Conclusions The case highlights Wellens syndrome in acute critical occlusion with collateral artery.

Evaluation of Stenotrophomonas Maltophilia Bloodstream Infections in a Tertiary Pediatric Cardiovascular Surgery Intensive Care Unit in Turkey

Background: Stenotrophomonas maltophilia poses a significant challenge as a drug-resistant opportunistic bacterium, particularly in ICU settings. However, its impact on pediatric ICU patients, especially those undergoing cardiovascular surgery, are scarce. Therefore, we aimed to analyze the factors behind S. maltophilia bloodstream infections (BSI) in our tertiary pediatric cardiovascular surgery ICU by evaluating the 2-year data. Methods: In this retrospective study, we analyzed data of 11 (mean age 20.3±17.6 months) and 18 cases (mean age 22.4±18.5 months) diagnosed with S. maltophilia BSI out of 635 and 685 children who underwent cardiovascular surgery from March 2021 to February 2022, and March 2022 to February 2023, respectively. Factors including age, gender, cardiac pathologies, surgical risk scores, duration of extracorporeal membrane oxygenation (ECMO) and mechanical ventilation, length of ICU stay, and use of broad-spectrum antibiotics were compared. Results: The incidence of S. maltophilia BSI increased by 50.5% in 2022-2023 compared to the previous year. While no significant differences were noted in age, gender, or surgical frequency, notable distinctions emerged in ECMO and mechanical ventilation durations, ICU length of stay, and broad-spectrum antibiotic usage (p values&lt;0.05). Conclusion: Prolonged ECMO and mechanical ventilation, along with extended ICU stays and broad-spectrum antibiotic administration following highrisk cardiac surgeries, emerged as significant contributors to S. maltophilia BSI in our ICU. This underscores the necessity for a comprehensive approach encompassing infection control protocols, prudent antimicrobial utilization, and strategies to minimize invasive procedures. Such a multifaceted approach is paramount in mitigating the prevalence of S. maltophilia BSI, especially in high-risk ICU environments.

A comprehensive, multifaceted strategy to increase pediatric donor heart utilization

BACKGROUNDMany hearts offered for pediatric heart transplantation (HT) are not placed. In 2016, we initiated a quality improvement endeavor to increase heart offer acceptance. This study assessed the effect of these interventions at our center. METHODSEvaluation of pre-/post-implementation cohorts (1/1/2008-12/31/2016 vs. 1/1/2017- 7/1/2023) comparing donor heart utilization. Six interventions were iterated over time to increase offer acceptance (“extended criteria”): ABO-incompatible transplant, ex vivo perfusion for distanced donors, 3-dimensional total cardiac volume (TCV) assessment, acceptance of Hepatitis-C or SARS-COV-2 infected donors, and institutional culture change favoring consideration of donors previously considered unacceptable (Public Health Service Risk, long CPR duration, etc.). Outcomes studied included annual HT volume, median waitlist duration, sequence number at acceptance, and post-transplant clinical outcomes. RESULTSFrom 1/2008–7/2023 annual transplant volume increased from 16/year to 25/year pre-/post-implementation. Three hundred-thirteen/389 (80%) listed patients were transplanted. Waitlist duration shortened post-implementation (P=0.01), as did the percentage of accepted heart offers utilizing at least one extended criterion (P<0.001). Institutional culture change and TCV assessment had the largest impact on donor heart utilization (P=0.04 &P<0.001). There was no difference in post-HT intubation or cardiovascular intensive care unit (CVICU) days (P= 0.05-0.9), though post-transplant hospitalization duration (P<0.001) increased. Post-transplant survival was unaffected by use of extended criteria hearts (P=0.3). CONCLUSIONSWe report increased donor heart offer acceptance resulting from a longitudinal, multi-faceted effort to increase organ offer utilization, with institutional culture change and TCV assessments having the greatest impact. Use of extended criteria hearts was not associated with inferior survival.

Improvement in Diagnosis and Management of Nosocomial Pneumonias in a Cardiovascular Surgery Intensive Care Unit: A Multidisciplinary Approach.

While criteria for the diagnosis of nosocomial pneumonias exist, objective definitions are a challenge and there is no gold standard for diagnosis. We analyzed the impact of the implementation of a logical, consensus-based diagnostic and treatment protocol for managing nosocomial pneumonias in the cardiovascular surgery intensive care unit (CVS-ICU). We conducted a quasi-experimental, interrupted time series analysis to evaluate the impact of a diagnostic and treatment protocol for nosocomial pneumonias in the CVS-ICU. Impacts were measured relative to patient outcomes, diagnostic processes, and antimicrobial stewardship improvement. Descriptive statistics were used to analyze results. Overall, 35 pre-protocol and 39 post-protocol patients were included. Primary clinical variables suggesting pneumonia in pre- and post-protocol patients were new lung consolidation (50% vs. 71%), new leukocytosis (59% vs. 64%), and positive culture (32% vs. 55%). Appropriate diagnostic testing improved (23% vs. 54%, p = 0.008) after protocol implementation. The proportion of patients meeting the criteria for nosocomial pneumonia (77% vs. 87%) was not statistically significant, though more patients in the post-protocol group met probable diagnostic criteria (51% vs. 77%). Duration of therapy was not significantly different (6 days [IQR = 5.0, 10.0] vs. 7 days [IQR = 6.0, 9.0]). The implementation of a diagnostic and treatment protocol for management of nosocomial pneumonias in the CVS-ICU resulted in improved diagnostic accuracy, advanced antimicrobial and diagnostic stewardship efforts, and laboratory cost savings without an adverse impact on patient-centered outcomes.

Association between hyperglycemia at ICU admission and postoperative acute kidney injury in patients undergoing cardiac surgery: Analysis of the MIMIC-IV database

BackgroundThis study aimed to explore the correlation between hyperglycemia at intensive care unit (ICU) admission and the incidence of acute kidney injury (AKI) in patients after cardiac surgery. MethodsWe conducted a retrospective cohort study, in which clinical data were extracted from the Medical Information Mart for Intensive Care (MIMIC)-IV database. Adults (≥18 years) in the database who were admitted to the cardiovascular intensive care unit after cardiac surgery were enrolled. The primary outcome was the incidence of AKI within 7 days following ICU admission. Secondary outcomes included ICU mortality, hospital mortality, ICU length of stay, and the 28-day and 90-day mortality. Multivariable Cox regression analysis was used to assess the association between ICU-admission hyperglycemia and AKI incidence within 7 days of ICU admission. Different adjustment strategies were used to adjust for potential confounders. Patients were divided into three groups according to their highest blood glucose levels recorded within 24 h of ICU admission: no hyperglycemia (<140 mg/dL), mild hyperglycemia (140–200 mg/dL), and severe hyperglycemia (≥200 mg/dL). ResultsOf the 6905 included patients, 2201 (31.9%) were female, and the median (IQR) age was 68.2 (60.1–75.9) years. In all, 1836 (26.6%) patients had severe hyperglycemia. The incidence of AKI within 7 days of ICU admission, ICU mortality, and hospital mortality was significantly higher in patients with severe admission hyperglycemia than those with mild hyperglycemia or no hyperglycemia (80.3% vs. 73.6% and 61.2%, respectively; 2.8% vs. 0.9% and 1.9%, respectively; and 3.4% vs. 1.2% and 2.5%, respectively; all P <0.001). Severe hyperglycemia was a risk factor for 7-day AKI (Model 1: hazard ratio [HR]=1.4809, 95% confidence interval [CI]: 1.3126 to 1.6707; Model 2: HR=1.1639, 95% CI: 1.0176 to 1.3313; Model 3: HR=1.2014, 95% CI: 1.0490 to 1.3760; all P <0.050). Patients with normal glucose levels (glucose levels <140 mg/dL) had a higher 28-day mortality rate than those with severe hyperglycemia (glucose levels ≥200 mg/dL) (4.0% vs. 3.8%, P <0.001). ConclusionsIn post-cardiac surgery patients, severe hyperglycemia within 24 h of ICU admission increases the risk of 7-day AKI, ICU mortality, and hospital mortality. Clinicians should be extra cautious regarding AKI among patients with hyperglycemia at ICU admission after cardiac surgery.

Echocardiogram by apical-subcostal protocol in prone position during invasive mechanical ventilation in cardiovascular intensive care unit

AimsTo evaluate the feasibility of a transthoracic echocardiogram using an apical-subcostal protocol in invasive mechanical ventilation (IMV) and prone position.MethodsProspective study of adults who required a prone position during IMV. A pillow was placed only under the left hemithorax in the prone position to elevate and ease the apical and subcostal windows. A critical care cardiologist (prone group) acquired and evaluated the images using the apical-subcostal protocol. Besides, we used ambulatory echocardiograms performed as a comparative group (supine group).Results86 patients were included, 43 in the prone and 43 in the supine. In the prone group, the indication to perform an echocardiogram was hemodynamic monitoring. All patients were ventilated with protective parameters, and the mean end-expiratory pressure was 10.6 cmH2O. The protocol was performed entirely in 42 of 43 patients in the prone group because one patient did not have any acoustic window. In the 43 patients in the prone group analyzed and compared to the supine group, global biventricular function was assessed in 97.7% (p = 1.0), severe heart valve disease in 88.4% (p = 0.055), ruled out of the presence of pulmonary hypertension in 76.7% (p = 0.80), pericardial effusion in 93% (p = 0.12), and volume status by inferior vena cava in 93% (p = 0.48). Comparing prone versus supine position, a statistical difference was found when evaluating the left ventricle apical 2-chamber view (65.1 versus 100%, p < 0.01) and its segmental function (53.4 versus 100%, p < 0.01).ConclusionThe echocardiogram using an apical-subcostal protocol is feasible in patients in the IMV and prone position.Graphical