Airway Protection Deficits According to Stimulus Type in Parkinson's Disease
试验速览
- 阶段
- 1 期
- 状态
- 已完成
- 入组人数
- 158
- 试验地点
- 1
- 主要终点
- Positive/negative cough response
研究概览
简要总结
Aspiration pneumonia (APn) occurs at a higher rate in patients with Parkinson's disease (PD) versus healthy adults. This is of particular public health concern given that death secondary to aspiration pneumonia and lung infection is a leading cause of death in persons with PD. Swallowing and cough function are affected in PD, putting people with PD at significant risk for uncompensated aspiration (aspiration without adequate cough response). One challenge in the management of airway protective deficits related to PD is the chronic and progressive nature of the disease, where swallowing dysfunction appears subtly in the form of microaspiration, reducing the perceived urgency of the swallowing disorder by both clinicians and patients. The long-term goal of this research is to advance the management of airway protection deficits in patients with neurodegenerative disease in order to decrease morbidity and mortality due to aspiration related lung infection. The objective here is to further specify deficits leading to uncompensated airway compromise in PD in order to advance the clinical management of these patients, leading to an immediate positive impact.
详细描述
The study will be completed in one visit, and take about an hour. All study procedures are done in the investigators quiet clinical research area at the Center for Movement Disorders and Neurorestoration (Room 7). If participants agree to be in this research study, after participants sign the informed consent form, the investigators will ask participants some questions related to participants health history. These questions include:
Do participants have a history of any breathing disorders or diseases (asthma, emphysema/chronic obstructive pulmonary disease (COPD), etc), or severe chest injury?
- Do participants have any history of stroke, or any neurologic disease besides Parkinson's disease?
- Have participants smoked in the last 5 years?
- Have participants had any chest infections within the last 5 the weeks?
- Do participants have a history of head and neck cancer?
- Are participants allergic to capsaicin, hot peppers, Zostrix cream, or other medicines?
The investigators will ask these questions to make sure participants do not have a history of any illnesses that would affect their ability to cough or that would make it unsafe for them to participate. If participants answer yes to any of these questions, they will not be able to continue in the study.
Next, the investigators will begin to measure participants reflex cough. First, the investigators will attach a small microphone with a clip to participants shirt that will record participants cough responses. The investigators will have participants inhale a "hot pepper" vapor at five different concentrations. The hot pepper vapors will be separately delivered through a mouthpiece attached to a hand-held nebulizer (a device that makes vapors out of liquids). The investigators will deliver each type of vapor to participants 3 times each for a total of 15 presentations. After inhaling each vapor and coughing if participants need to, the investigators will ask participants to rate their urge to cough using a scale of 0-10, with 0 equaling no urge to cough, and 10 equaling the greatest urge to cough. If participants do not cough to any of the vapors, the investigators will present one final stronger dose. There will be a 2 minute break in between each presentation of the vapor, and water will be available at all times throughout the study. This will take approximately 40 minutes.
研究设计
- 研究类型
- Interventional
- 分配方式
- Non Randomized
- 干预模型
- Single Group
- 主要目的
- Diagnostic
- 盲法
- Single (Participant)
入排标准
- 年龄范围
- 50 Years 至 80 Years（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •Within age limits
- •For PD group: confirmed diagnosis of idiopathic parkinson's disease
排除标准
- •Uncontrolled hypertension
- •Difficulty complying due to neuropsychological dysfunction (i.e., severe depression)
- •Allergy to capsaicin or hot peppers
- •History of head or neck cancer
- •Neurological disorders other than PD (i.e., stroke, etc.)
- •control participants only: any history of neurologic disorders including PD
- •History of smoking in the last 5 years
- •Breathing disorders or diseases
研究组 & 干预措施
Healthy control
Healthy age-matched adult participants with no history of Parkinson's disease Participants in this group will receive capsaicin vapor cough provocation test. The vapor will be delivered using a small hand-held nebulizer.
干预措施: Capsaicin vapor (Drug)
Healthy control
Healthy age-matched adult participants with no history of Parkinson's disease Participants in this group will receive capsaicin vapor cough provocation test. The vapor will be delivered using a small hand-held nebulizer.
干预措施: Nebulizer (Device)
Parkinson's disease - no PA
People with Parkinson's disease without penetration or aspiration during swallowing; based on results of videofluoroscopic swallow evaluation. Participants in this group will receive capsaicin vapor and fog cough provocation test using a small, hand-held nebulizer.Participants in the group will also receive a fluoroscopic swallow evaluation.
干预措施: Capsaicin vapor (Drug)
Parkinson's disease - no PA
People with Parkinson's disease without penetration or aspiration during swallowing; based on results of videofluoroscopic swallow evaluation. Participants in this group will receive capsaicin vapor and fog cough provocation test using a small, hand-held nebulizer.Participants in the group will also receive a fluoroscopic swallow evaluation.
干预措施: fog (Other)
Parkinson's disease - no PA
People with Parkinson's disease without penetration or aspiration during swallowing; based on results of videofluoroscopic swallow evaluation. Participants in this group will receive capsaicin vapor and fog cough provocation test using a small, hand-held nebulizer.Participants in the group will also receive a fluoroscopic swallow evaluation.
干预措施: Videofluoroscopic swallow evaluation (Radiation)
Parkinson's disease - no PA
People with Parkinson's disease without penetration or aspiration during swallowing; based on results of videofluoroscopic swallow evaluation. Participants in this group will receive capsaicin vapor and fog cough provocation test using a small, hand-held nebulizer.Participants in the group will also receive a fluoroscopic swallow evaluation.
干预措施: Nebulizer (Device)
Parkinson's disease - PA
People with Parkinson's disease with penetration or aspiration during swallowing;based on results of videofluoroscopic swallow evaluation.Participants in this group will receive capsaicin vapor and fog cough provocation test using a small, hand-held nebulizer. Participants in the group will also receive a fluoroscopic swallow evaluation.
干预措施: Capsaicin vapor (Drug)
Parkinson's disease - PA
People with Parkinson's disease with penetration or aspiration during swallowing;based on results of videofluoroscopic swallow evaluation.Participants in this group will receive capsaicin vapor and fog cough provocation test using a small, hand-held nebulizer. Participants in the group will also receive a fluoroscopic swallow evaluation.
干预措施: fog (Other)
Parkinson's disease - PA
People with Parkinson's disease with penetration or aspiration during swallowing;based on results of videofluoroscopic swallow evaluation.Participants in this group will receive capsaicin vapor and fog cough provocation test using a small, hand-held nebulizer. Participants in the group will also receive a fluoroscopic swallow evaluation.
干预措施: Videofluoroscopic swallow evaluation (Radiation)
Parkinson's disease - PA
People with Parkinson's disease with penetration or aspiration during swallowing;based on results of videofluoroscopic swallow evaluation.Participants in this group will receive capsaicin vapor and fog cough provocation test using a small, hand-held nebulizer. Participants in the group will also receive a fluoroscopic swallow evaluation.
干预措施: Nebulizer (Device)
结局指标
主要结局
Positive/negative cough response
时间窗: 10 minutes
A positive response is 2 coughs produced to 2/3 trials of the stimulus
Urge-to-cough sensitivity
时间窗: 30 minute
Slope of the line created by plotting urge-to-cough (scale of 1-11) with capsaicin concentration (5 doses of increasing intensity).
次要结局
- Cough sensitivity threshold(30 minutes)
- Cough motor threshold(30 minutes)
- Latency(10 minutes)