Continuous Glucose Monitoring: An Evaluation of Impact on Improving the Efficiency of Diagnostic Processes and Enhancing Patient Safety in the Management of Reactive and Spontaneous Hypoglycaemia
试验速览
- 阶段
- 不适用
- 状态
- 终止
- 入组人数
- 7
- 试验地点
- 2
- 主要终点
- study arm 1 - diagnosing hypoglycaemic episodes using Continuous Glucose Monitoring of interstitial fluid as a proxy marker of blood glucose
研究概览
简要总结
Use of CGM to determine diagnosis in possible spontaneous or reactive hypoglycaemia.
Use of CGM to aid treatment optimisation in spontaneous or reactive hypoglycaemia
详细描述
The human body's blood sugar levels are tightly controlled by the hormone insulin, produced by the pancreas. If the pancreas produces too much insulin, then the blood sugar will fall to low levels (hypoglycaemia). Insulin overproduction can happen as a result of the body misreading a change in blood sugar levels after eating (such as after obesity surgery) or through tumours of the pancreas which overproduce insulin (insulinomas).
Hypoglycaemia can cause subtle symptoms such as tiredness, poor concentration, or dizziness and if untreated more severe symptoms including fits, coma and death. Low blood sugars can go unnoticed at night and if levels fall frequently, people can lose their ability to notice subtle symptoms.
People suspected of having hypoglycaemia require a series of investigations to try and reproduce a low blood sugar under controlled conditions. This often requires an admission to hospital for a few days and multiple finger pricks to test the blood sugar - which patients often find painful. If low blood sugars caused by too much insulin are confirmed then medical treatment is started in the first instance, with surgery possibly following later. The only way to check whether these medications are working is by home fingerprick glucose measurements. If people have low sugars at night or have lost their ability to notice symptoms of low blood sugar, it is very difficult to be sure that the medical treatment is working.
The investigators plan to use continuous glucose monitoring probes to measure patient's blood sugar prior to and during admission for formal investigation for hypoglycaemia (alongside conventional fingerprick and blood testing). This might allow us to exclude hypoglycaemia as a cause of their symptoms, avoiding lengthy admissions.
The investigators will also use this technology (alongside fingerprick testing) to test how well medical treatment is working in patients with proven hypoglycaemia.
研究设计
- 研究类型
- Interventional
- 分配方式
- Na
- 干预模型
- Single Group
- 主要目的
- Diagnostic
- 盲法
- None
盲法说明
Phase 1 - (diagnostic) The CGM device will be blinded to the patient and physician until investigations into hypoglycaemia are complete phase 2 - (treatment optimisation) The CGM device will be blinded to the patient and physician for the first 10 days of treatment, medication will be optimised and the patient will continue with CGM in an unblinded way for up to 20 further days to aid further treatment optimisation
入排标准
- 年龄范围
- 18 Years 至 90 Years（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •phase 1 - under investigation for possible/probable hypoglycaemia
- •phase 2 - on medical therapy for established hypoglycaemia
- •Must be Able and willing to give informed consent. No vulnerable adults will be included.
- •Must be Aged >18 years
- •Any ethnicity
- •Any socio economic group
- •Either conventional gender, or non-binary.
排除标准
- •Must not be unwilling or unable to give consent
- •Must not be unable to speak sufficient English to give consent and understand study requirements
- •Must not be Aged<18 or >90 years
- •Must not be lack capacity to consent
- •Must not have an underlying hepatic condition
- •Must not have a current excessive alcohol consumption (men regularly consuming >50 units/week, women >35 units/week)
- •Must not have Diabetes Mellitus
- •Must not be currently using Diabetic medication or insulin
- •Must not be currently pregnant
- •Must not be on haemo or peritoneal dialysis
结局指标
主要结局
study arm 1 - diagnosing hypoglycaemic episodes using Continuous Glucose Monitoring of interstitial fluid as a proxy marker of blood glucose
时间窗: up to 5 days prior to admission for hypoglycaemia investigations
outpatient - CGM findings reflect patient's fingerprick glucose readings * Episodes of true hypoglycaemia (glucose measurement \<4, \<3.0, \<2.2mmol/L as decided by finger prick glucose testing) are captured by the CGM device
study arm 2 - using Continuous Glucose Monitoring of interstitial fluid as a proxy marker of blood glucose to optimise hypoglycaemia treatment in patients with an established diagnosis of spontaneous or reactive hypoglycaemia
时间窗: up to 30 days
blinded phase - CGM findings reflect patient's fingerprick glucose readings- any episodes of true hypoglycaemia (as decided by fingerprick glucose testing) are captured by CGM device unblinded phase - CGM recordings help with titration of anti hypoglycaemic medications and this reduces overall incidence of hypoglycaemic episodes or duration of time spent in hypoglycaemic range (\<4, \<3.0, \<2.2 mmol/L)
study arm 1 - diagnosing hypoglycaemic episodes (glucose measurement <4mmol/L) using Continuous Glucose Monitoring of interstitial fluid as a proxy marker of blood glucose
时间窗: up to 5 days in hospital during investigations for hypoglycaemia
inpatient - CGM findings reflect patient's fingerprick glucose readings * Episodes of true hypoglycaemia (glucose measurement \<4, \<3.0, \<2.2mmol/L, as decided by finger prick glucose testing) are captured by the CGM device Inpatient - 72 hour fast - CGM device calls hypoglycaemia (glucose measurement \<4, \<3.0, \<2.2mmol/L) when fingerprick/lab glucoses also do
次要结局
- assessing concordance between CGMS and lab/finger prick glucose testing(up to 10 days (study arm 1) or up to 30 days (study arm 2))