Effect of neurosurgical high observation beds (HOBs) on service provision: a single-centre experience and cost analysis.

OBJECTIVE: To evaluate the effect of level 1, high observation beds (HOBs) compared with high dependency unit (HDU) and neurosurgical intensive care unit (NICU) admission on service provision, such as cancelled operations, and healthcare costs. METHODS: A retrospective, observational, single-centre cross-sectional study at a single, large UK neurosurgical centre. All adult patients admitted to neurosurgical HOBs between December 2021 and July 2022 were included. The list of cancelled procedures was collected from 2019 to 2022. To evaluate the impact of admission of eligible patients to HOBs, the total bed days, cost per bed day, number of admissions and cost per admission were obtained for all clinical areas the financial years 2019/2020 and 2021/2022. RESULTS: 307 patients were included in the study: 59.7% of HOBs admissions were elective and 37.7% were acute; admissions were for cranial procedures or conservative treatment (64.8%), spinal (32.6%) or other (2.6%). Following admission, 73.3% of patients were stepped down to the ward prior to discharge home. Only seven patients required escalation to level-2 or level-3 care. Overall, 97% of all HOBs patients were discharged home at the end of hospital stay. Occupancy rate was 90.4%.The cost of bed day increased from ward, level 0 (£384), then level 1 (£376), to level 2 (£787-1211) and to level 3 (£1628). From 2019 to 2021, 558 operations had been cancelled, and 140 (37.8%) of 370 were estimated to have been potentially avoided by HOBs admissions due to conflict of scheduling, ward bed capacity and critical care bed capacity. In addition, a minimum total expenditure due to cancelled operations was estimated at £22 923.50 yearly on average. CONCLUSION: This study recognises HOBs growing role in the management of acutely unwell patients in ward-based environments. While recognising the associated challenges, this study highlighted the potential in reducing healthcare costs. Further studies should evaluate the impact and limitations of HOBs on patients' recovery and outcomes, compared to HDU and NICU.

Surgical factors associated with new-onset postoperative atrial fibrillation after lung resection: the EPAFT multicentre study.

PURPOSE OF THE STUDY: Postoperative atrial fibrillation (POAF) is a recognised complication in approximately 10% of major lung resections. In order to best target preoperative treatment, this study aimed at determining the association of incidence of POAF in patients undergoing lung resection to surgical and anatomical factors, such as surgical approach, extent of resection and laterality. STUDY DESIGN: Evaluation of Post-operative Atrial Fibrillation in Thoracic surgery (EPAFT): a multicentre, population-based, retrospective, cross-sectional, observational study including 1367 patients undergoing lung resections between April 2016 and March 2017. The primary outcome was the presence of POAF following resection. POAF was defined as at least one episode of symptomatic or asymptomatic AF confirmed by ECG within 7 days from the thoracic procedure or prior to discharge from the hospital. RESULTS: POAF was observed in 7.4% of patients: 3.1% in minor resection (video-assisted thoracoscopic surgery (VATS): 2.5%; thoracotomy: 3.8%), 9.0% in simple lobectomy (VATS: 7.3%, thoracotomy: 9.9%), 6.0% in complex resection (thoracotomy: 6.3%) and 11.4% in pneumonectomy. POAF was higher in left (4.0%) vs right (2.4%) minor resections, and in left (9.9%) vs right (8.3%) lobectomy, but higher in right (7.5%) complex resections, and the highest in right pneumonectomy (17.6%). No significant variations were observed as per sex, laterality or resected lobes. A positive univariable and multivariable association was observed for increasing age and increasing extent of resection, but not thoracotomy. Median (Q1-Q3) hospital stay was 9 (7-14) days in POAF and 5 (4-7) days in non-AF patients (p<0.001), with an increased cerebrovascular accident burden (p<0.001) and long-term mortality (p<0.001). CONCLUSIONS: Among patients undergoing lung resection, POAF was significantly associated with age, increasing invasiveness of approach and increasing extent of resection. In addition, POAF carried a significant long-term mortality rate and burden of cerebrovascular accident. Appropriate prophylaxis should be targeted at these groups.

Is the use of dual antiplatelet therapy following urgent and emergency coronary artery bypass surgery associated with increased risk of cardiac tamponade?

BACKGROUND AND AIM: Cardiac tamponade is a recognized post-cardiac surgery complication, resulting in increased morbidity and mortality. The 2016 American College of Cardiology and American Heart Association Guidelines recommended the use of Dual Antiplatelet Therapy (DAPT) in the management of patients undergoing urgent or emergency coronary artery bypass grafting (CABG). The effect of DAPT on cardiac tamponade rates was investigated in comparison to aspirin monotherapy (AMT). MATERIALS AND METHODS: Prospectively collected data from a tertiary cardiac surgery center was analyzed to identify the patients who underwent urgent and emergency CABG between January 2015 and January 2018. The patients were categorized as aspirin monotherapy (AMT) and Dual Antiplatelet Therapy (DAPT) groups. The primary outcome was total cardiac tamponade rate and secondary outcomes were length of hospitalization and 30-days and 1-year mortality. RESULTS: A total of 246 eligible patients were included across both arms and compared for confounding variables. Cardiac tamponade was observed in 9 (7.3%) and 8 (6.5%) of AMT and DAPT groups, respectively (P=0.802). The average hospital stay in days was similar in both groups (AMT=8.4 vs. DAPT=8.1, P=0.82), whereas tamponade patients experienced a significantly longer hospitalization when compared to non-tamponade patients (9.8 vs. 8.1 days, P=0.047). The 30-days and 1-year mortality were similar in both groups and were 0.8% and 1.6%, respectively. CONCLUSION: Overall, this study demonstrated that DAPT in urgent or emergency CABG patients is not associated with an increased risk of cardiac tamponade, length of hospital stay or mortality. RELEVANCE FOR PATIENTS: This study demonstrated that the use of DAPT in patients undergoing CABG as an urgent or emergency procedure following myocardial infarction is not associated with an increased risk of bleeding and has many associated benefits.

Attenuation of oxidative stress-induced lesions in skeletal muscle in a mouse model of obesity-independent hyperlipidaemia and atherosclerosis through the inhibition of Nox2 activity.

Obesity leading to hyperlipidaemia and atherosclerosis is recognised to induce morphological and metabolic changes in many tissues. However, hyperlipidaemia can occur in the absence of obesity. The impact of the latter scenario on skeletal muscle and liver is not understood sufficiently. In this regard, we used the Apolipoprotein E-deficient (ApoE-/-) mouse model, an established model of hyperlipidaemia and atherosclerosis, that does not become obese when subjected to a high-fat diet, to determine the impact of Western-type diet (WD) and ApoE deficiency on skeletal muscle morphological, metabolic and biochemical properties. To establish the potential of therapeutic targets, we further examined the impact of Nox2 pharmacological inhibition on skeletal muscle redox biology. We found ectopic lipid accumulation in skeletal muscle and the liver, and altered skeletal muscle morphology and intramuscular triacylglycerol fatty acid composition. WD and ApoE deficiency had a detrimental impact in muscle metabolome, followed by perturbed gene expression for fatty acid uptake and oxidation. Importantly, there was enhanced oxidative stress in the skeletal muscle and development of liver steatosis, inflammation and oxidative protein modifications. Pharmacological inhibition of Nox2 decreased reactive oxygen species production and protein oxidative modifications in the muscle of ApoE-/- mice subjected to a Western-type diet. This study provides key evidence to better understand the pathophysiology of skeletal muscle in the context of hyperlipidaemia and atherosclerosis and identifies Nox2 as a potential target for attenuating oxidative stress in skeletal muscle in a mouse model of obesity-independent hyperlipidaemia.

Duchenne muscular dystrophy: genome editing gives new hope for treatment.

Duchenne muscular dystrophy (DMD) is a progressive wasting disease of skeletal and cardiac muscles, representing one of the most common recessive fatal inherited genetic diseases with 1:3500-1:5000 in yearly incidence. It is caused by mutations in the DMD gene that encodes the membrane-associated dystrophin protein. Over the years, many have been the approaches to management of DMD, but despite all efforts, no effective treatment has yet been discovered. Hope for the development of potential therapeutics has followed the recent advances in genome editing and gene therapy. This review gives an overview to DMD and summarises current lines of evidence with regard to treatment and disease management alongside the appropriate considerations.