Sleep QualityNCT07755280
Predictors of Sleep Quality in Patients Undergoing Open-Heart Surgery
An observational study of Sleep Quality and Intensive Care (ICU), run by Aydin Adnan Menderes University at 1 site in Turkey (Türkiye).
Trial summary
Sleep quality is a complex and multidimensional phenomenon shaped by the interaction of patient characteristics, symptom burden, and environmental factors specific to the intensive care unit environment. Read more about this study
- Who is it for?
- Ages 18 years and older
- Conditions the study is for
- Sleep Quality, Intensive Care (ICU), Nursing Care
- How many people
- 157 participants
- Where
- 1 siteTurkey (Türkiye)
- Study dates
- 15 Sep 2025to 15 May 2026
- Phase
- Observational
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 years and older
- All sexes
- No healthy volunteers
- Adult, Older adult
Study population: Patients admitted to the cardiovascular intensive care unit after open heart surgery
Who may be able to join
- ability to understand and speak Turkish,
- willingness to participate in the study,
- having spent at least 24 hours in the intensive care unit, and
- having the cognitive ability to understand and answer questions.
Who cannot join
- having taken narcotic or sedative drugs within the last 48 hours,
- having a history of chronic diseases that can cause sleep problems such as Chronic Obstructive Pulmonary Disease or sleep apnea,
- having a psychiatric illness diagnosed by a physician,
- having a visual or hearing impairment.
Trial locations and contacts
1 site in 1 country.
Turkey (Türkiye)1 site
Aydın Adnan Menderes University
Aydin, Zafer Mahallesi, 09010
About this study
Official title: Predictors of Sleep Quality in Patients Undergoing Open-Heart Surgery: A Hierarchical Regression Analysis
Sleep quality is a complex and multidimensional phenomenon shaped by the interaction of patient characteristics, symptom burden, and environmental factors specific to the intensive care unit environment. Despite this multidimensional nature, studies identifying predictors of sleep quality in intensive care units after cardiac surgery are limited.
Read the detailed description
Sleep is a fundamental biological process necessary for maintaining physiological homeostasis, supporting immune function, and promoting healing. Sleep quality is a multidimensional construct influenced by individual characteristics such as age and body mass index, as well as psychological factors like stress and anxiety, and environmental factors such as noise, light, lack of privacy, and care practices. However, patients in intensive care units often experience poor sleep quality, characterized by reduced sleep duration, fragmented sleep, prolonged sleep latency, and frequent awakenings. Poor sleep quality in intensive care units leads to a higher incidence of delirium and atrial fibrillation complications in patients during the postoperative period, delayed recovery time, negative impact on immune function, and prolonged stay in the intensive care unit. Open heart surgery is a frequently performed operation in ischemic and non-ischemic heart diseases (valve diseases, aortic stenosis, and atrial septal defect, etc.) that requires close monitoring of patients in an intensive care environment after surgery. Following these surgeries, physiological issues such as pain, surgical wound problems, fatigue, dyspnea, and sleep problems commonly experienced by patients in intensive care settings, and psychological issues such as anxiety, stress, fear of death negatively affect sleep quality. In addition, individual characteristics such as age and body mass index (BMI) can also affect sleep quality in this patient population. Poor sleep quality in intensive care units is a commonly reported problem by patients, but due to its multifaceted nature, it is often not effectively managed. Although previous studies have reported the prevalence of sleep disorders in intensive care patients, most studies have failed to adopt a comprehensive and multifactorial approach that examines the variables affecting sleep quality individually. This situation highlights the need for studies using multivariate analytical methods to identify independent predictors of sleep quality. The aim of this study is to examine the predictors of sleep quality in patients undergoing open heart surgery and admitted to the cardiovascular surgery intensive care unit, using a multivariate approach.
- Conditions
- Sleep Quality, Intensive Care (ICU), Nursing Care
- Medical subject headings
- Sleep Initiation and Maintenance Disorders
What is being measured
The primary outcome is the main question the study is designed to answer.
Pain
Assessed wit Visual Analog Scale. his scale is a unidimensional, self-report instrument measuring 10 cm in length. The lower end corresponds to a score of 0, labeled 'no pain,' while the upper end corresponds to a score of 10, labeled 'unbearable pain.' Higher scores on the scale indicate greater severity of pain as reported by the patient.
Measured: At least 24 hours after admission to the intensive care unit
Sleep quality
Assessed with Richard- Campbell Sleep Questionnaire. he scale consists of 6 items assessing sleep quality, nocturnal sleep depth, frequency of awakening, ambient noise level, time spent awake, and sleep onset latency. Each item is rated on a visual analog scale ranging from 0 to 100. The total score obtained from the scale is divided by the number of items to calculate the scale score. A scale score between 0 and 25 is interpreted as very poor sleep, while a score between 76 and 100 is interpreted as very good sleep.
Measured: At least 24 hours after admission to the intensive care unit
Fatigue
Assessed wit Visual Analog Scale. his scale is a unidimensional, self-report instrument measuring 10 cm in length. The lower end corresponds to a score of 0, labeled 'no fatigue,' while the upper end corresponds to a score of 10, labeled 'unbearable fatigue.' Higher scores on the scale indicate greater severity of fatigue as reported by the patient.
Measured: At least 24 hours after admission to the intensive care unit
Environmental Stressors
Assessed with Intensive Care Unit Environmental Stressors Scale. The scale is of a 4-point Likert type and consists of 42 items. The minimum possible score is 42 and the maximum is 168. Higher scores are interpreted as indicating a greater degree of being affected by environmental stressors.
Measured: At least 24 hours after admission to the intensive care unit
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted10 Aug 2026
- Study start15 Sep 2025
- Primary completion15 Mar 2026
- Study completion15 May 2026
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Sleep QualityStudies of the same condition, open and under way.
- More trials run by Aydin Adnan Menderes UniversityThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Observational
- Observational model
- Other
- Time perspective
- Cross-sectional
- Enrolment
- 157 participants (actual)
Sponsor and investigators
- Lead sponsor
- Aydin Adnan Menderes University
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Ezgi Arslan, Aydin Adnan Menderes University
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT07755280
- Sponsor's protocol ID
- Predictors of Sleep Quality
- Status last verified
- Aug 2026
- First submitted
- 5 Aug 2026
- Last updated
- 10 Aug 2026
- Results posted
- No
- Data monitoring committee
- Yes
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- Yes: The data sets generated during and/or analyzed during the current study are available from the corresponding author on reasonable request.
Study at a glance
From the registry record, last updated by the sponsor on 10 Aug 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Predictors of Sleep Quality in Patients Undergoing Open-Heart Surgery: A Hierarchical Regression Analysis
- ClinicalTrials.gov ID
- NCT07755280
- Acronym / sponsor ID
- Predictors of Sleep Quality
- Conditions
- Sleep Quality, Intensive Care (ICU), Nursing Care
- Study type
- Observational
- Recruitment status
- Completed
- Enrolment
- 157 participants (actual)
- Lead sponsor
- Aydin Adnan Menderes UniversityUniversity, hospital or other
- Study start
- 15 Sep 2025 (actual)
- Primary completion
- 15 Mar 2026 (actual)
- Study completion
- 15 May 2026 (actual)
- First posted
- 10 Aug 2026 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
Sleep quality is a complex and multidimensional phenomenon shaped by the interaction of patient characteristics, symptom burden, and environmental factors specific to the intensive care unit environment. Despite this multidimensional nature, studies identifying predictors of sleep quality in intensive care units after cardiac surgery are limited.
Detailed description
Sleep is a fundamental biological process necessary for maintaining physiological homeostasis, supporting immune function, and promoting healing. Sleep quality is a multidimensional construct influenced by individual characteristics such as age and body mass index, as well as psychological factors like stress and anxiety, and environmental factors such as noise, light, lack of privacy, and care practices. However, patients in intensive care units often experience poor sleep quality, characterized by reduced sleep duration, fragmented sleep, prolonged sleep latency, and frequent awakenings. Poor sleep quality in intensive care units leads to a higher incidence of delirium and atrial fibrillation complications in patients during the postoperative period, delayed recovery time, negative impact on immune function, and prolonged stay in the intensive care unit. Open heart surgery is a frequently performed operation in ischemic and non-ischemic heart diseases (valve diseases, aortic stenosis, and atrial septal defect, etc.) that requires close monitoring of patients in an intensive care environment after surgery. Following these surgeries, physiological issues such as pain, surgical wound problems, fatigue, dyspnea, and sleep problems commonly experienced by patients in intensive care settings, and psychological issues such as anxiety, stress, fear of death negatively affect sleep quality. In addition, individual characteristics such as age and body mass index (BMI) can also affect sleep quality in this patient population. Poor sleep quality in intensive care units is a commonly reported problem by patients, but due to its multifaceted nature, it is often not effectively managed. Although previous studies have reported the prevalence of sleep disorders in intensive care patients, most studies have failed to adopt a comprehensive and multifactorial approach that examines the variables affecting sleep quality individually. This situation highlights the need for studies using multivariate analytical methods to identify independent predictors of sleep quality. The aim of this study is to examine the predictors of sleep quality in patients undergoing open heart surgery and admitted to the cardiovascular surgery intensive care unit, using a multivariate approach.
Study design
- Observational model
- Other
- Time perspective
- Cross-sectional
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
- Study population
- Patients admitted to the cardiovascular intensive care unit after open heart surgery
Key inclusion criteria (4 listed)
- ability to understand and speak Turkish,
- willingness to participate in the study,
- having spent at least 24 hours in the intensive care unit, and
- having the cognitive ability to understand and answer questions.
Key exclusion criteria (4 listed)
- having taken narcotic or sedative drugs within the last 48 hours,
- having a history of chronic diseases that can cause sleep problems such as Chronic Obstructive Pulmonary Disease or sleep apnea,
- having a psychiatric illness diagnosed by a physician,
- having a visual or hearing impairment.
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Primary outcome
Pain
Time frame: At least 24 hours after admission to the intensive care unit
Assessed wit Visual Analog Scale. his scale is a unidimensional, self-report instrument measuring 10 cm in length. The lower end corresponds to a score of 0, labeled 'no pain,' while the upper end corresponds to a score of 10, labeled 'unbearable pain.' Higher scores on the scale indicate greater severity of pain as reported by the patient.
Sleep quality
Time frame: At least 24 hours after admission to the intensive care unit
Assessed with Richard- Campbell Sleep Questionnaire. he scale consists of 6 items assessing sleep quality, nocturnal sleep depth, frequency of awakening, ambient noise level, time spent awake, and sleep onset latency. Each item is rated on a visual analog scale ranging from 0 to 100. The total score obtained from the scale is divided by the number of items to calculate the scale score. A scale score between 0 and 25 is interpreted as very poor sleep, while a score between 76 and 100 is interpreted as very good sleep.
Fatigue
Time frame: At least 24 hours after admission to the intensive care unit
Assessed wit Visual Analog Scale. his scale is a unidimensional, self-report instrument measuring 10 cm in length. The lower end corresponds to a score of 0, labeled 'no fatigue,' while the upper end corresponds to a score of 10, labeled 'unbearable fatigue.' Higher scores on the scale indicate greater severity of fatigue as reported by the patient.
Environmental Stressors
Time frame: At least 24 hours after admission to the intensive care unit
Assessed with Intensive Care Unit Environmental Stressors Scale. The scale is of a 4-point Likert type and consists of 42 items. The minimum possible score is 42 and the maximum is 168. Higher scores are interpreted as indicating a greater degree of being affected by environmental stressors.
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 10 Aug 2026.
- Individual participant dataSharing planned: Yes. The data sets generated during and/or analyzed during the current study are available from the corresponding author on reasonable request.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
The record lists no contact. Use the official record to reach the sponsor.
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
An observational study of Sleep Quality and Intensive Care (ICU), run by Aydin Adnan Menderes University at 1 site in Turkey (Türkiye).
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 4 inclusion and 4 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 10 Aug 2026. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in Turkey (Türkiye). Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Pain (time frame: At least 24 hours after admission to the intensive care unit). The study lists 4 primary outcomes in all. It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 10 Aug 2026.