Pilot Study of a Multicomponent Nurse Intervention to Reduce Delirium in Hospitalized Older Adults

Study Overview
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Brief Summary
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Objectives: To analyze if a multicomponent nurse-led intervention randomized clinical trial (MID-Nurse Study) is feasible (Pilot study), and can reduce the incidence, duration, and severity of delirium in hospitalized older adults in an AGU. Design: Parallel-group Double-blind Randomized Clinical Trial (Pilot Study). Setting: AGU Complejo Hospitalario Universitario from Albacete (Albacete, Spain). Participants: 50 patients ≥ 65 years hospitalized in the AGU (21 intervention group, 29 control group). Interventions: After risk factor analysis, all participants in the intervention group (IG) received a daily multicomponent intervention (orientation, sensorial deficit, sleep, mobilization, hydration, nutrition, drugs, elimination, oxygenation, pain) by the intervention nurses. The control group (CG) received usual care. Measurements: Delirium presence was determined daily with the Confusion Assessment Method (CAM), and delirium severity with the Delirium Rating Scale-Revised-98 (DRS). Mortality, days of hospitalization, use of physical restraint measures, and use of drugs for delirium control (neuroleptics and benzodiacepines) were also recorded.

Detailed Description
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Parallel-group, double blind (evaluation and analysis), randomized clinical trial (pilot study). The design was based on recommendations for conducting pilot studies (Thabane 2010). The main objective of the MID-Nurse (Randomized Clinical Trial) was to analyze if a multicomponent nurse-led intervention reduces the incidence, duration, and severity of delirium in hospitalized older adults in an Acute Geriatric Unit (AGU). Specific objectives and evaluating criteria of the MID-Nurse-P (Pilot Study) were: Process: To determine the recruitment rate (criteria: at least 70% of the eligible patients can be recruited), the complete follow-up rate (criteria: at least 85% of the included participants complete the follow-up), and the adherence to intervention (criteria: at least 80% of the included participants receive every scheduled intervention). Resources: To assess capacity of the team and process time to conduct the trial. Criteria: Less than 10% of the participants can´t complete the intervention program due to study team problems, and daily time employed per participant is not longer than 30 minutes. Management: To analyze potential study personnel and data managing problems. Scientific: To estimate the intervention effect and the variance. In the first 24 hours from admission, all the following data were collected by the evaluation nurses, once the informed consent was signed, and randomization performed by the principal investigator, who did not take part in the rest of the data collection and clinical intervention: Demographic data, Charlson comorbidity index, mean clinical diagnosis for admission, usually consumed drugs before admission, Barthel index, Holden´s FAC instrument, Pfeiffer´s Short Portable Mental Status Questionnaire, Reisberg´s Global Deterioration Scale, Dowton scale, pain with the visual analogical scale, and pressure ulcers risk with the Braden scale. Vital signs were determined on admission, including blood pressure, heart rate, temperature, hydration level, and oxygen saturation. Medical or nurse procedures were recorded, including bladder catheterization, nasogastric tube placement, venous or arterial access, blood sample acquisition, and other invasive procedures. Blood sample was collected, and haemoglobin, leukocyte and neutrophil count, reactive C protein, sedimentation rate, glucose, urea, sodium, potassium, albumin, total proteins, cholesterol, thyroid stimulating hormone, transferrin, ferritin, total iron, folic acid, and B12 vitamin, were recorded. After patient enrollment, all the patients received daily an evaluation of the Confusion Assessment Method scale (CAM) (Inouye 1990) by the evaluation nurses, in the afternoon. Prevalence of delirium throughout the follow-up was described, prevalence excluding the first day (to avoid bias of patients that were admitted with confusion), and incidence of delirium (new case across the follow-up, one patient could have more than 1 incident delirium). Number of days with delirium were also registered, and mean number of days with delirium was calculated for both groups. In the case that the CAM was positive for delirium, patients also were evaluated with the Delirium Rating Scale-Revised-98 (DRS-R-98) (de Rooij 2006) to determine delirium severity. Total delirium severity was calculated by adding the severity of delirium during all days of hospitalization, and mean severity per day was calculated dividing the global severity per number of days with delirium. Main outcome variables were the presence of delirium throughout the follow-up (dichotomic variable, yes/no), number of days with delirium during hospitalization (continuous variable), and total delirium severity (sum of DRS-R-98 during the complete follow-up). Participants in the intervention group received the first intervention in the first 24 hours from admission, and thereafter daily until hospital discharge. Participants in the control group received usual medical and nurse care during all the hospitalization process. The intervention was carried out exclusively by the intervention nurses, and was composed of two main parts, being the first one a risk factor analysis, and the second one the intervention on the risk factors detected (orientation, sensorial deficit, sleep, mobilization, hydration, nutrition, drugs, elimination, oxygenation, pain). Furthermore, the intervention nurses identified the principal caregiver in the first 24 hours from admission, and provided an informative booklet about strategies and recommendations to prevent delirium incidence, including ambient strategies, orientation abilities, and identification of alert signs.

Official Title
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Pilot Study of a Multicomponent Nurse Intervention to Reduce the Incidence and Severity of Delirium in Hospitalized Older Adults: MID-Nurse-P

Conditions
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Delirium

Intervention / Treatment
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* Other: Multicomponent nurse-led intervention


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Patients with an age equal or older than 65 years Hospitalized at the Acute Geriatric Unit of the Complejo Hospitalario Universitario of Albacete Valid signed informed consent by the patient or legal representative. Exclusion Criteria: Agonic situation Non-Spanish speaking Severe cognitive decline (Reisberg´s Global Deterioration Scale = 7) Patients sharing the same room with a previously included participant

Ages Eligible for Study
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Minimum Age: 65 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Prevention
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Double


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Intervention Group<br>Multicomponent nurse-led intervention (orientation, sensorial deficit, sleep, mobilization, hydration, nutrition, drugs, elimination, oxygenation, pain) | Other: Multicomponent nurse-led intervention<br>* Participants in the intervention group received the first intervention in the first 24 hours from admission, and thereafter daily until hospital discharge. The intervention was carried out exclusively by the intervention nurses, and was composed of two main parts, being the first one a risk factor analysis, and the second one the intervention on the risk factors detected (orientation, sensorial deficit, sleep, mobilization, hydration, nutrition, drugs, elimination, oxygenation, pain). Furthermore, the intervention nurses identified the principal caregiver in the first 24 hours from admission, and provided an informative booklet about strategies and recommendations to prevent delirium incidence, including ambient strategies, orientation abilities, and identification of alert signs.<br>|
| No Intervention: Control Group<br>Usual care | |

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Delirium incidence (% participants) | Delirium incidence during hospitalization (% participants) | Participants will be followed for the duration of hospital stay, an expected average of 2 weeks | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Mean daily delirium severity (mean score Delirium Rating Scale-Revised-98) | Mean delirium severity per day with delirium (mean score Delirium Rating Scale-Revised-98) | Participants will be followed for the duration of hospital stay, an expected average of 2 weeks | 
| Mortality (% of participants) | Mortality (% of participants) | Participants will be followed for the duration of hospital stay, an expected average of 2 weeks | 
| Length of stay (days) | Length of hospitalization time (days) | Participants will be followed for the duration of hospital stay, an expected average of 2 weeks | 
| Restraint measures (number of participants with these measures) | Use of restraint measures for delirium control (number of participants with these measures) | Participants will be followed for the duration of hospital stay, an expected average of 2 weeks | 
| Drugs for delirium (% of participants using neuroleptics or benzodiazepines) | Use of drugs (neuroleptics or benzodiazepines) for delirium control (% of participants) | Participants will be followed for the duration of hospital stay, an expected average of 2 weeks | 
| Delirium prevalence (% of participants) | Delirium prevalence during hospitalization (% of participants) | Participants will be followed for the duration of hospital stay, an expected average of 2 weeks | 
| Delirium severity (sum of total Delirium Rating Scale-Revised-98 socres during hospitalization) | Delirium severity during hospitalization (sum of total Delirium Rating Scale-Revised-98 socres during hospitalization) | Participants will be followed for the duration of hospital stay, an expected average of 2 weeks | 
| Recruitment rate (% of patients) | % of the eligible patients recruited | Up to five months | 
| Complete follow-up rate (% of participants) | % of the included participants completing the follow-up | Up to five months | 
| Adherence to intervention (% of participants) | % of included participants receiving every scheduled intervention | Up to five months | 
| Capacity of the team (% of participants) | % of participants that can´t complete the intervention program due to study team problems | Up to five months | 
| Process time (time in minutes) | Daily time employed per participant for delivering the intervention | Up to five months | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Delirium, Pilot Study, Nurse intervention, Hospitalization