Clinical Research Directory

Albumin Utilization in Adult Cardiac Surgical Patients: Retrospective

All heart surgery patients universally require hydration, which is given through a vein in the arm, but practices for treating patients are not universal. There are disagreements about whether crystalloids should be used alone or in combination with albumin. This question has important implications because albumin is an expensive blood product in relatively limited supply, and 20% of its use is by heart surgery patients. The goal of this study is to learn more about how crystalloids and albumin are used during heart surgery, as well as, key patient outcomes.

Is the CRP-Albumin-Lymphocyte (CALLY) Index Effective in Predicting Postoperative Delirium in Geriatric Patients Undergoing Hip Fracture Surgery

Introduction: Postoperative delirium (POD) is a common complication in elderly surgical patients and is significantly associated with prolonged hospital stays, cognitive impairment, functional decline, and increased mortality rates within 6 to 12 months. Its incidence has been reported to range between 10% and 70%, depending on the diagnostic criteria used, the population studied, and the type of surgical procedure performed. The incidence is particularly higher following vascular, cardiac, and hip fracture surgeries. According to the 2024 updated guidelines by the European Society of Anaesthesiology and Intensive Care (ESAIC), POD should be screened at least once daily for a minimum of three days, beginning in the post-anesthesia recovery unit, based on the DSM-5 criteria. POD is a complex syndrome associated with various phenotypes and is likely the result of a combination of neuroinflammatory and oxidative stress processes. Candidate biomarkers for POD include inflammatory parameters (such as interleukins, C-reactive protein \[CRP\], erythrocyte sedimentation rate, and CD68), dopamine receptors, norepinephrine levels, cortisol levels, genetic biomarkers (e.g., apolipoprotein E4), acetylcholinesterase levels, and albumin levels. However, systemic stress can lead to nonspecific activation of the immune system, resulting in a decrease in lymphocyte count. Although the relationships between CRP, albumin, and lymphocyte count with POD have been individually investigated in the literature, no study has examined the combined effect of these three parameters. Based on this, we aimed to investigate whether the CRP-Albumin-Lymphocyte (CALLY) Index, a novel index not previously reported in the literature, is effective in predicting POD in geriatric patients with hip fractures. The CALLY Index is calculated using the formula: (Albumin × Lymphocyte) / (CRP × 10⁴). Aim/Hypothesis: H₀: The CALLY Index cannot predict the risk of postoperative delirium in geriatric patients undergoing hip fracture surgery. H₁: The CALLY Index can predict the risk of postoperative delirium in geriatric patients undergoing hip fracture surgery. Material-Methods: The following data will be recorded for each patient: * Demographic variables: age, sex, height, weight, and body mass index (BMI) * American Society of Anesthesiologists (ASA) physical status classification * Comorbidities and medication use * Smoking and alcohol consumption history * Preoperative laboratory parameters: obtained from the hospital information system for CALLY Index calculation * Perioperative variables: type and duration of anesthesia, duration of surgery, type of surgical procedure, estimated blood loss, blood product transfusion status, and occurrence of intraoperative adverse events * Postoperative data: * Ward of admission after surgery (orthopedic ward/intensive care unit) * Presence of delirium, assessed twice daily (morning and evening) for three days using DSM-5 criteria, starting in the post-anesthesia recovery unit * Occurrence of postoperative complications * Length of stay in the intensive care unit * Total hospital length of stay * Mortality status Patients aged 65 years and older who undergo surgery for femoral neck or intertrochanteric fractures will be included in the study. Patients with preoperative delirium, preoperative dementia, pathological or open fractures, systemic or localized infections in the fracture region during the preoperative period, or multiple trauma will be excluded. Additionally, those with a BMI \<18.5 or ≥35 chronic organ failure, or advanced-stage cancer will be excluded from the study.

Functionality of Albumin in the Context of Hemodialysis

Hemodialysis treatment enables patients with end-stage chronic kidney disease to survive. At the same time, however, this treatment also increases cardiovascular mortality, in particular due to a chronically increased level of inflammation and usually incomplete removal of uraemic toxins. Both of these are closely linked with the functional properties of albumin. The aim of this study is to investigate the effects of various parameters of dialysis, in particular dialyzer properties and dialysis mode on the functional properties of albumin and to what extent these parameters can be used therapeutically, to improve the treatment quality of hemodialysis treatment in the long term by modifying albumin functional properties. Our own preliminary work in this field and the current state of research indicate that, for example, the use of high-flux dialyzers can contribute to a reduction of the oxidative stress level. It also appears possible that treatment mode (haemodiafiltration instead of haemodialysis) may also have an effect on the binding and detoxification efficiency of albumin and thus on the removal of uraemic toxins. Previous results have mostly been collected in observational studies. As a proof-of-concept study, this study will further investigate the concrete therapeutic applicability in an interventional study design.