Urinary Tract Infection Induced Delirium in Elderly Patients: A Systematic Review

The Role of Neutrophil-to-Lymphocyte Ratio (NLR) in Urosepsis-Associated Delirium

Introduction Urosepsis is a systemic, dysregulated, inflammatory reaction to a urinary tract infection and can have severe effects on all systems, which can often lead to multi-organ failure and death. Sepsis-associated delirium is a common complication in critically ill patients, contributing to adverse outcomes and prolonged hospital stays. The neutrophil-to-lymphocyte ratio (NLR) has emerged as a potential biomarker for sepsis severity and prognosis. Material and methods Our study investigates the utility of NLR in the diagnostic strategies for urosepsis-associated delirium in a cohort of 76 patients with sepsis and septic shock admitted to the Intensive Care Unit (ICU). We performed a single-centre retrospective observational study in the Craiova Clinical Emergency Hospital between June and October 2023. Results Patients with urological conditions that were diagnosed with urosepsis included 76 patients. These patients were clustered as follows: a group with delirium (37 patients, 48.7%) and another group without delirium (39 patients, 51.3%). Complete blood count parameters were obtained upon admission, and delirium was assessed using standardized diagnostic criteria. We identified a strong significant positive correlation between elevated NLR values on ICU admission and the development of delirium during hospitalization in urosepsis patients. Receiver operating characteristic (ROC) analysis showed similar diagnostic performance for NLR score. Conclusions The findings suggest that NLR may serve as a valuable biomarker for early detection, risk stratification, and guiding therapeutic interventions in urosepsis-associated delirium, thus improving outcomes in critically ill patients.

Determinants of delirium in elderly in-patients in a general ward setting in a teaching hospital: A case control study

Background

There is a dearth of research on risk factors of delirium among elderly inpatients in nonintensive low resource settings.

Aim

To determine the risk factors of delirium in elderly inpatients in a nonintensive care unit setting.

Materials and Methods

Sixty two elderly patients with delirium (cases) and 62 patients without delirium (controls) were administered a semi-structured proforma with socio-demographic variables and putative predisposing and precipitating risk factors and the Vellore screening instrument for dementia.

Results

On univariate analysis, factors such as past cognitive impairment, history of nocturnal confusion and delirium, diminished daily living activities, severe medical illness, history of psychiatric illness, presence of dementia, infection, fever above 1000F, abnormal electrolytes abnormal RFT, leukocytes in urine, hypoxia, anticholinergics and benzodiazepines, emergency admission, use of physical restraints, bladder catheterization, more than routine investigations, intensive care unit admission, surgery, and duration of hospital stay more than 10 days were found to be significantly associated with delirium. On multivariate analysis with binary logistic regression, bladder catheterization (odds ratio [OR] = 13.85; confidence interval [CI] = 1.44-133.14), abnormal electrolytes (OR = 5.12; CI = 1.11-23.69), and hypoxia (OR = 75.52; CI = 4.64-1.134E3) were detected to be independently associated with delirium.

Conclusion

Acute modifiable rather than long-term factors were risk factors for delirium among the elderly. An awareness of modifiable risk factors has the potential of developing targeted interventions for the early mitigation of delirium.

Understanding the Value of a Proactive Telecare System in Supporting Older Adults' Independence at Home: Qualitative Interview Study Among Key Interest Groups

BACKGROUND

Telecare is claimed to support people to live in their own homes for longer by providing monitoring services that enable responses to emergencies at home. Although most telecare technologies commissioned in the United Kingdom predominantly supply reactive services, there has been recent interest among policy makers to develop proactive telecare services to provide additional understanding of older adults' health and well-being needs to provide a means for more preventive interventions. Proactive telecare refers to providing regular well-being calls or encouraging users to regularly confirm their well-being to anticipate and prevent crises through an increased understanding of individuals' needs and by building social relationships with older adults. Such technologies have already begun to be introduced, yet little research has explored the potential value of proactive telecare.

OBJECTIVE

This study explores the perceptions of different interest groups to understand the extent to which using a proactive telecare service can support older adults to live independently, what potential health and well-being benefits may be elicited from its use, and what the limitations are.

METHODS

Semistructured interviews were conducted with older people (those with experience in using proactive telecare and those without), family members of proactive telecare users, and proactive telecare staff regarding their perceptions and opinions about the value of a proactive telecare service. Data were analyzed using inductive thematic analysis.

RESULTS

A total of 30 individuals participated in this study. Older adults described the value of proactive telecare in feeling safe and in control and appreciated feeling connected. Family members and staff valued the potential to detect early health deterioration in older adults, and all participants highlighted the benefit of strengthening access to social networks, particularly for socially isolated older people. However, telecare is often viewed as a last resort, and therefore, anticipatory care may not suit all populations, as demonstrated by the mixed acceptance of the technology among older adults who did not have experience using it. Participants also reported limitations, including the requirement for family, friends, or neighbors to assist older adults during an emergency and the need for financial resources to fund the service.

CONCLUSIONS

This study presents the first known qualitative inquiry about a proactive telecare system, which provides rich and detailed insights from different perspectives into the potential benefits of this intervention. Proactive telecare may promote and facilitate the accumulation of social and technological resources as individuals prepare to cope with age-related challenges, thus helping to avoid negative outcomes prematurely. However, similar to reactive telecare, proactive telecare must be matched to individual preferences and existing financial and social resources.

[Risk Factors and Prognosis of Delirium After Liver Transplantation]

Objective

To analyze the incidence, the onset time, and the risk factors of delirium after liver transplantation (LT).

Methods

The clinical data of 211 patients who underwent LT at Third Xiangya Hospital, Central South University between January 2019 and December 2021 were collected to investigate the incidence and the onset time of postoperative delirium. Univariate analysis and multivariate logistic regression analysis were conducted to analyze the risk factors of delirium and to analyze the effect of delirium on clinical outcomes.

Results

The incidence of delirium was 20.4% (43/211) and the median interval between LT and the onset of delirium was 19 hours. Univariate analysis showed that the preoperative Model for End-Stage Liver Disease (MELD) score≥22, preoperative length-of-stay≥7, liver cancer, preoperative hepatic encephalopathy, infections within 2 months before LT, preoperative lymphocyte value<0.5×10 9 L －1, massive amount of intraoperative red blood cell infusion, and carbapenem antibiotics use for 3 days or longer were associated with postoperative delirium. Multivariate logistic regression analysis showed that preoperative infections within 2 months before LT (odds ratio [ OR]=2.597, 95% confidence interval [ CI]: 1.135-5.944, P=0.024), preoperative MELD score≥22 ( OR=2.967, 95% CI: 1.104-7.975, P=0.031), and preoperative hepatic encephalopathy ( OR=4.700, 95% CI: 2.043-10.602, P<0.001) were independent risk factors for delirium after LT, while carbapenems antibiotics use for 3 days or longer ( OR=0.192, 95% CI: 0.083-0.441, P<0.001) was a protective factor for postoperative delirium among LT recipients. Regarding clinical outcomes, patients with delirium had longer postoperative ICU length-of-stays than those without delirium did ( P=0.025).

Conclusion

There is a high incidence of postoperative delirium among patients who undergo LT and the onset time of delirium after LT is early. Risk factors include preoperative infections, high MELD score, and hepatic encephalopathy. On the other hand, the use of carbapenems can help prevent delirium.