Clinical Research Directory

Population Pharmacokinetics and Pharmacodynamics of Ciprofol

The goal of this observational study is to learn how the anesthetic drug ciprofol works in older adults who are having limb surgery under general anesthesia at Shanghai Geriatric Medical Center. The study will help researchers build a population model to better understand how the drug moves through the body (PK) and how it affects patients (PD). This model may help doctors use a Target-Controlled Infusion (TCI) system to adjust the drug dose more precisely. The main question it aims to answer is: Does ciprofol work safely and effectively in older adults during orthopedic surgery? Participants already receiving ciprofol as part of their regular anesthesia care will: 1. Provide blood samples at different time points during and after surgery. 2. Have their vital signs and anesthesia-related data recorded before, during, and after surgery. 3. Be monitored for side effects and recovery indicators such as the Aldrete score and signs of postoperative delirium. Researchers will use this information to: 1. Build and test a population PK/PD model for ciprofol. 2. Simulate recommended TCI dosing plans. 3. Explore how individual responses to ciprofol relate to recovery and safety outcomes. This study may help improve anesthesia care for elder adults by making drug dosing safer and more effective.

Pre- and Postoperative Chest Therapy With Positive Expiratory Pressure (PEP) to Prevent Hospital-acquired Pneumonia

The goal of this clinical trial is to investigate whether pre- and postoperative treatment with systematic PEP therapy can prevent hospital-acquired pneumonia in patients with hip frac-ture. It will also learn about the barriers regarding PEP therapy in this group of patients. * Does pre- and postoperative treatment with systematic PEP therapy prevent hospital-acquired pneumonia in patients with hip fracture? * Which barriers do participants have regarding PEP therapy in this group of patients? Researchers will compare systematic PEP therapy to no intervention besides standard treat-ment to see if systematic therapy with PEP can prevent hospital-acquired pneumonia. Participants will: * Receive systematic PEP therapy during hospitalization or no intervention besides standard treatment * Register the PEP therapy four times daily on a paper checklist. Failure to perform the treatment and the reason must also be documented on the checklist.

Frailty Intervention in Postoperative Hip Fracture Inpatients

Hip fracture is a big health concern in older adults, and can lead to increased risk of death, reduced level of independence \& mobility, reduced quality of life, and higher likelihood of admission to nursing homes. Frailty is a medical condition associated with ageing that results in a reduced ability to do daily tasks. A frail older adult is also less able to recover well from conditions that may affect their wellbeing (for example, infections, falls resulting in injuries or hospital admissions). Frailty is common in older adults with hip fractures. There has been increasing research showing that frailty can be slowed down and improved by a combination of nutritional supplementation and exercise. However, most of the research in this area has been in frail older adults living at home or in nursing homes. The exercise or nutritional programs in these studies tend to be carried out over weeks or months. There are very few studies looking at older adults in hospital and how exercise and nutrition help with frailty over shorter periods of time, even more so in patients who have sustained an injury. There is, however, very little research in hospital based frailty programs in older patients who have suffered major trauma. It is well known that standing up and starting to walk soon after a hip fracture improves time to recovery, reduces hospital length of stay and death. Hence, physiotherapy on the first day after hip fracture surgery is now recommended. However, there needs to be more research to aid in developing physiotherapy and exercise programs that are safe and doable in the care of hip fracture patients despite limited resources in our healthcare system. Similarly, although malnutrition is common in frail older adults with hip fractures, the benefits of nutritional supplementation in these patients is not fully understood. It is known that having a hip fracture puts a person at risk of muscle breakdown and increasing protein intake is recommended to help reduce this risk. Research on exercise and nutrition based frailty programs specific to hip fracture patients is strongly needed, specifically the development of that are doable and safe in the hospital setting that can help improve outcomes in hip fracture patients after surgery. The investigators believe that a multicomponent exercise and nutrition based frailty program will be safe, doable and acceptable in frail older adults after hip fracture surgery.

Rehabilitation in the Home After Hip Fracture

Hip fractures are common, especially in older adults, and they can have a big impact on health and quality of life. In Australia, hip fractures are a significant healthcare challenge. After surgery, patients often need rehabilitation to regain mobility, but this usually involves long hospital stays. The RITH4Hips trial will determine if a program where patients receive rehabilitation at home (instead of in the hospital) is similar to conventional inpatient rehabilitation. Objectives: The main goal of this study is to find out if rehabilitation at home after surgery for a hip fracture works as well as rehabilitation in the hospital. The investigators also want to see if the home rehabilitation program can reduce the time spent in a hospital bed and improve other aspects like quality of life, mobility, and pain management. Methods: This study will involve older adults who have had surgery due to a low-trauma hip fracture. Participants will be randomly assigned to either the usual care inpatient rehabilitation or the Rehabilitation in the Home (RITH) program. The investigators will measure outcomes such as how well patients can move, how much pain they experience, how their quality of life improves, and how much time they spend in the hospital. Expected Outcomes: The investigators expect that the home rehabilitation program will be just similar to inpatient rehabilitation in helping patients recover mobility. The investigators also hope to find that it will reduce the time patients spend in a hospital bed, improve their quality of life, reduce fear of falling, and lessen the burden on carers. Additionally, the investigators aim to show that the home program is more cost-effective than hospital-based rehabilitation.

Effect of Transcranial Direct Current Stimulation on Postoperative Delirium in Elderly Patients

To evaluate the efficacy of transcranial direct current stimulation (tDCS) in reducing the incidence of postoperative delirium (POD) in elderly patients undergoing hip fracture surgery. This single-center, double-blind, randomized controlled trial will enroll participants aged 65 years and older, scheduled for elective hip surgery under spinal anesthesia. Participants will be randomly assigned to either the active-tDCS group or the sham-tDCS group. The active-tDCS group will receive two sessions: one pre-surgery and one post-surgery, with electrodes positioned over the left dorsolateral prefrontal cortex and the right supraorbital area. Each session includes 15-second ramp-up phase at the start, 20 minutes simulation with 2 mA current and 15-second ramp-down phase at the end. The sham-tDCS group will receive two sham procedures with no actual current delivered. Functional brain activity will be monitored before and after each session or sham procedure to assess changes in cortical activation and connectivity using functional near-infrared spectroscopy (fNIRS). The primary outcome measure will be the incidence of POD, assessed using the 3-Minute Diagnostic Interview for Confusion Assessment Method (3D-CAM). Secondary outcomes include the severity of delirium, postoperative pain, anxiety, depression, cognitive function, and sleep quality.

Time on Feet After Hip Fracture Event

With simple technology investigators can map how long it takes for a patient with a hip fracture to be helped and encouraged to stand and walk in the days following the injury. A small sensor on the thigh can measure advanced data regarding movement patterns. The limited research results available show that patients spend too much time lying down or sitting, which can lead to poorer recovery, complications, and an increased risk of death. The project maps the current situation in orthopedic emergency care as well as in orthopedic geriatric care, which is provided in a modern building with single rooms and private bathrooms. In addition to better understanding the significance of different care models, the project aims to present baseline data that future intervention studies can use as control material. The project will also connect the activity level of the patients during the hospital stay with ongoing rehabilitation studies in community follow-up care.