Long-term Follow-up of Dexmedetomidine-esketamine and tDCS for Neurocognitive Complications After Surgery
Long-term Follow-up of Perioperative Dexmedetomidine-esketamine Combination and Transcranial Direct Current Stimulation for Prevention of Neurocognitive Complications in Older Patients After Non-cardiac Surgery
Przegląd badań
Status
Warunki
Interwencja / Leczenie
Szczegółowy opis
Neurocognitive complications, mainly delirium and neurocognitive disorders, are common cerebral complications in older patients after surgery. Occurrence of neurocognitive complications is associated with prolonge hospital stay and increased in-hospital death. Furthermore, occurrence of neurocognitive complications is associated with adverse long-term outcomes, including cognitive decline, poor quality of life, and reduced long-term survival.
Dexmedetomidine is a highly selective alpha 2 adrenergic receptor agonist with sedative, analgesic, and anxiolytic effects. Available evidence showed that perioperative dexmedetomidine decreased early postoperative neurocognitive complications in older patients, possibly by improving analgesia and sleep quality and relieving surgery-related inflammation. However, routine dose dexmedetomidine increases bradycardia and hypotension which are potentially harmful to older patients.
Ketamine is a noncompetitive N-Methyl-D-aspartic acid (NMDA) receptor antagonist and has been used as an anesthetic and analgesic for decades. Esketamine is the S-enantiomer of ketamine and twice as potent as racemic ketamine. Recent studies found that subanesthetic dose of esketamine is effective in improving analgesia and sleep quality and relieving surgery-related stress response. However, even subanesthetic ketamine or esketamine increases neuropsychiatric side effects.
In clinical practice, dexmedetomidine-esketamine combination has been used for premedication in children and postoperative analgesia in adults and showed additive or synergistic effects. An ongoing trial conducted by the investigators plan to test the hypothesis that perioperative use of dexmedetomidine-esketamine combination may prevent postoperative neurocognitive complications in older patients. It is reasonable to hypothesize that perioperative dexmedetomdine-esketamine might also have favorable effects on long-term outcomes.
Transcranial direct current stimulation (tDCS) is a non-invasive neuromodulation technique and increasingly used for treatment of various neurological diseases. Studies in the perioperative settings showed that perioperative use of tDCS improved sleep quality and reduced delirium occurrence early after surgery. The ongoing trial coducted by the investigators plan to test the hypothesis that perioperative use of tDCS may reduce postoperative neurocognitive complications in older patients. Perioperative tDCS might also have favorable effects on long-term outcomes.
This long-term follow-up of the ongoing 2×2 factorial trial aims to investigate the effects of perioperative dexmedetomidine-esketamine combination and tDCS on long-term outcomes in older patients after noncardiac surgery.
Typ studiów
Zapisy (Szacowany)
Faza
- Faza 4
Kontakty i lokalizacje
Kontakt w sprawie studiów
- Nazwa: Dong-Xin Wang, MD, PHD
- Numer telefonu: 86 10 83572784
- E-mail: wangdongxin@hotmail.com
Kopia zapasowa kontaktu do badania
- Nazwa: Zhen-Zhen Xu, MD
- Numer telefonu: 86 10 83572460
- E-mail: zjxvzhenzhen@126.com
Lokalizacje studiów
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Beijing Municipality
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Beijing, Beijing Municipality, Chiny, 100034
- Peking University First Hospital
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Kontakt:
- Zhen-Zhen Xu, MD
- Numer telefonu: 86 10 83572460
- E-mail: zjxvzhenzhen@126.com
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Kontakt:
- Dong-Xin Wang, MD, PhD
- Numer telefonu: +86 10 83572784
- E-mail: wangdongxin@hotmail.com
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Fujian
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Fuzhou, Fujian, Chiny, 362011
- Fujian Medical University Union Hospital
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Kontakt:
- Dan-Feng Zhang, MD
- E-mail: mazui1234@163.com
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Guangdong
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Shenzhen, Guangdong, Chiny, 518036
- Peking University Shenzhen Hospital
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Kontakt:
- Tao Luo, MD
- E-mail: 496855048@qq.com
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Shaanxi
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Xi'an, Shaanxi, Chiny, 710032
- Xijing Hospital, Air Force Medical University
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Kontakt:
- Zhi-Hong Lu, MD
- E-mail: deerlu23@163.com
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Zhejiang
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Hangzhou, Zhejiang, Chiny, 310006
- First Affilited Hospital, School of Medicine, Zhejiang University
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Kontakt:
- Dian-San Su, MD
- E-mail: diansansu@yahoo.com
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Hangzhou, Zhejiang, Chiny, 310009
- Second Affilited Hospital, School of Medicine, Zhejiang University
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Kontakt:
- Min Yan, MD
- E-mail: zryanmin@zju.edu.cn
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Kryteria uczestnictwa
Kryteria kwalifikacji
Wiek uprawniający do nauki
- Starszy dorosły
Akceptuje zdrowych ochotników
Opis
Inclusion Criteria:
- Aged 65 to 90 years;
- Preoperative Mini-Mental State Examination (MMSE) score < 27 points, indicating possible cognitive impairment ranging from mild to moderate;
- Scheduled to undergo elective non-cardiac, non-neurosurgical surgery under general anesthesia, with an expected surgical duration > 1 hour;
- Required patient-controlled intravenous analgesia (PCIA) after surgery.
Exclusion Criteria:
- Preoperative inability to communicate due to coma, severe dementia, endstage disease, or language impairment;
- History of schizophrenia, epilepsy, Parkinson's disease, brain trauma/surgery, or myasthenia gravis;
- Presence of metal implants in the intracranial or cervical region (such as cochlear implants, aneurysm clips, deep brain stimulation electrodes), or skin damage or severe skin disease on the head;
- Severe cardiac dysfunction (left ventricular ejection fraction < 30%), comorbid with sick sinus syndrome, severe bradycardia (heart rate < 50 bpm), or second-degree or higher atrioventricular block, or implantation of a cardiac pacemaker;
- Uncontrolled hyperthyroidism or pheochromocytoma;
- Severe liver dysfunction (Child-Pugh class C), severe renal dysfunction (requiring dialysis), or ASA classification ≥ IV;
- Allergy to dexmedetomidine or esketamine;
- Participation in other clinical studies within the past 3 months;
- Other conditions that are deemed unsuitable for study participation.
Plan studiów
Jak projektuje się badanie?
Szczegóły projektu
- Główny cel: Zapobieganie
- Przydział: Randomizowane
- Model interwencyjny: Przypisanie czynnikowe
- Maskowanie: Poczwórny
Broń i interwencje
Grupa uczestników / Arm |
Interwencja / Leczenie |
|---|---|
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Eksperymentalny: Dex-Esk + active tDCS
Participants will receive dexmedetomidine-esketamine (Dex-Esk) combination and active transcranial direct current stimulation (tDCS).
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Dexmedetomidine-esketamine combination (1 μg/mL dexmedetomidine and 0.5 mg/mL esketamine) will be administered after anesthesia induction, firstly as a loading dose at a rate of [0.4 x body weight (kg)] mL/h for 30 minutes (0.2 μg/kg dexmedetomidine and 0.1 mg/kg esketamine), followed by a maintenance infusion at a rate of [0.1 x body weight (kg)] mL/h (0.1 μg/kg/h dexmedetomidine and 0.05 mg/kg/h esketamine) until one hour before expected end surgery. Postoperative patient-controlled analgesia will be established with a 100 mL mixture (containing 1.0 μg/mL sufentanil, 1.25 μg/mL dexmedetomidine, and 0.25 mg/mL esketamine in normal saline), programmed to deliver 2-mL boluses with an 8-minute lockout interval and an 1-mL/h background infusion, and provided for 48 hours (at least 24 hours).
Inne nazwy:
Active transcranial direct current stimulation (tDCS) will be administered using a battery-powered stimulator. The anode will be positioned over the left dorsolateral prefrontal cortex (DLPFC, F3) and the cathode over the right supraorbital region (Fp2). The stimulation intensity will be set at 2.0 mA, featuring a 30-second linear ramp-up at the beginning and a 30-second ramp-down at the end of each session. Each participant will receive a total of three 20-minute sessions of active tDCS. The first session will be provided at 40 minutes after extubation in the post-anesthesia care unit. Two other sessions will be provided on postoperative days 1 and 2 (between 10:00 and 12:00 am).
Inne nazwy:
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Eksperymentalny: Dex-Esk + sham tDCS
Participants will receive dexmedetomidine-esketamine (Dex-Esk) combination and sham (placebo) transcranial direct current stimulation (tDCS).
|
Dexmedetomidine-esketamine combination (1 μg/mL dexmedetomidine and 0.5 mg/mL esketamine) will be administered after anesthesia induction, firstly as a loading dose at a rate of [0.4 x body weight (kg)] mL/h for 30 minutes (0.2 μg/kg dexmedetomidine and 0.1 mg/kg esketamine), followed by a maintenance infusion at a rate of [0.1 x body weight (kg)] mL/h (0.1 μg/kg/h dexmedetomidine and 0.05 mg/kg/h esketamine) until one hour before expected end surgery. Postoperative patient-controlled analgesia will be established with a 100 mL mixture (containing 1.0 μg/mL sufentanil, 1.25 μg/mL dexmedetomidine, and 0.25 mg/mL esketamine in normal saline), programmed to deliver 2-mL boluses with an 8-minute lockout interval and an 1-mL/h background infusion, and provided for 48 hours (at least 24 hours).
Inne nazwy:
Sham transcranial direct current stimulation (tDCS) will be administered using a battery-powered stimulator. The anode will be positioned over the left dorsolateral prefrontal cortex (DLPFC, F3) and the cathode over the right supraorbital region (Fp2). To ensure blinding, the device will deliver a initial 30-second ramp-up to 2.0 mA followed immediately by a 30-second ramp-down to 0 mA. The device remains "ON" for the remaining 19 minutes with no effective current output, mimicking the peripheral scalp sensation without delivering cortical modulation. Each participant will receive a total of three 20-minute sessions of sham tDCS. The first session will be provided at 40 minutes after extubation in the post-anesthesia care unit. Two other sessions will be provided on postoperative days 1 and 2 (between 10:00 and 12:00 am).
Inne nazwy:
|
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Eksperymentalny: Placebo + active tDCS
Participants will receive placebo (normal saline) and active transcranial direct current stimulation (tDCS).
|
Active transcranial direct current stimulation (tDCS) will be administered using a battery-powered stimulator. The anode will be positioned over the left dorsolateral prefrontal cortex (DLPFC, F3) and the cathode over the right supraorbital region (Fp2). The stimulation intensity will be set at 2.0 mA, featuring a 30-second linear ramp-up at the beginning and a 30-second ramp-down at the end of each session. Each participant will receive a total of three 20-minute sessions of active tDCS. The first session will be provided at 40 minutes after extubation in the post-anesthesia care unit. Two other sessions will be provided on postoperative days 1 and 2 (between 10:00 and 12:00 am).
Inne nazwy:
Placebo (normal saline) will be administered after anesthesia induction, firstly as a loading dose at a rate of [0.4 x body weight (kg)] mL/h for 30 minutes, followed by a maintenance infusion at a rate of [0.1 x body weight (kg)] mL/h until one hour before expected end surgery. Postoperative patient-controlled analgesia will be established with a 100 mL mixture (containing 1.0 μg/mL sufentanil in normal saline), programmed to deliver 2-mL boluses with an 8-minute lockout interval and an 1-mL/h background infusion, and provided for 48 hours (at least 24 hours).
Inne nazwy:
|
|
Komparator placebo: Placebo + sham tDCS
Participants will receive placebo (normal saline) and sham (placebo) transcranial direct current stimulation (tDCS).
|
Sham transcranial direct current stimulation (tDCS) will be administered using a battery-powered stimulator. The anode will be positioned over the left dorsolateral prefrontal cortex (DLPFC, F3) and the cathode over the right supraorbital region (Fp2). To ensure blinding, the device will deliver a initial 30-second ramp-up to 2.0 mA followed immediately by a 30-second ramp-down to 0 mA. The device remains "ON" for the remaining 19 minutes with no effective current output, mimicking the peripheral scalp sensation without delivering cortical modulation. Each participant will receive a total of three 20-minute sessions of sham tDCS. The first session will be provided at 40 minutes after extubation in the post-anesthesia care unit. Two other sessions will be provided on postoperative days 1 and 2 (between 10:00 and 12:00 am).
Inne nazwy:
Placebo (normal saline) will be administered after anesthesia induction, firstly as a loading dose at a rate of [0.4 x body weight (kg)] mL/h for 30 minutes, followed by a maintenance infusion at a rate of [0.1 x body weight (kg)] mL/h until one hour before expected end surgery. Postoperative patient-controlled analgesia will be established with a 100 mL mixture (containing 1.0 μg/mL sufentanil in normal saline), programmed to deliver 2-mL boluses with an 8-minute lockout interval and an 1-mL/h background infusion, and provided for 48 hours (at least 24 hours).
Inne nazwy:
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Co mierzy badanie?
Podstawowe miary wyniku
Miara wyniku |
Opis środka |
Ramy czasowe |
|---|---|---|
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Incidence of postoperative neurocognitive disorders (pNCD) at 3 months
Ramy czasowe: At 3 months after surgery
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Cognitive function will be assessed at baseline and at 3 months after surgery using the Telephone version of Montreal Cognitive Assessment (T-MoCA; scores range from 0 to 22, with higher scores indicating better cognitive function）. Postoperative neurocognitive disorders (pNCD) is defined as: a |Z| value of decline in T-MoCA score ≥1.96. Z value = [(change from baseline in T-MoCA score in a surgical patient - mean change from baseline in T-MoCA scores in the non-surgical group)] / (standard deviation of change from baseline in T-MoCA scores in the non-surgical group). |
At 3 months after surgery
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Miary wyników drugorzędnych
Miara wyniku |
Opis środka |
Ramy czasowe |
|---|---|---|
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Event-free survival
Ramy czasowe: Up to 1 year after surgery of the last enrolled patient
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Time interval from index surgery to cancer recurrence/metastasis/progression, new-onset cancer, new-onset serious illness (requiring hospitalization), or all-cause death, whichever comes first.
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Up to 1 year after surgery of the last enrolled patient
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Inne miary wyników
Miara wyniku |
Opis środka |
Ramy czasowe |
|---|---|---|
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Overall survival
Ramy czasowe: Up to 1 year after surgery of the last enrolled patient
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Time interval from index surgery to all-cause death.
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Up to 1 year after surgery of the last enrolled patient
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Recurrence-free survival
Ramy czasowe: Up to 1 year after surgery of the last enrolled patient
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Time interval from index surgery to cancer recurrence/metastasis/progression or all-cause death, whichever comes first.
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Up to 1 year after surgery of the last enrolled patient
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Activities of daily living score
Ramy czasowe: At 3 months, 6 months, and 1 year after surgery
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Daily living activities will be assessed with the activities of daily living (ADL; scores range from 1 to 56, with higher scores indicating worse ability of daily living).
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At 3 months, 6 months, and 1 year after surgery
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Incidence of postoperative neurocognitive disorders (pNCD) at 6 months and 1 year
Ramy czasowe: At 6 months and 1 year after surgery
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Cognitive function will be assessed at baseline and at 6 months and 1 year after surgery using the Telephone version of Montreal Cognitive Assessment (T-MoCA; scores range from 0 to 22, with higher scores indicating better cognitive function）. Postoperative neurocognitive disorders (pNCD) is defined as: a |Z| value of decline in T-MoCA score ≥1.96. Z value = [(change from baseline in T-MoCA score in a surgical patient - mean change from baseline in T-MoCA scores in the non-surgical group)] / (standard deviation of change from baseline in T-MoCA scores in the non-surgical group). |
At 6 months and 1 year after surgery
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Współpracownicy i badacze
Sponsor
Współpracownicy
Śledczy
- Główny śledczy: Dong-Xin Wang, MD, PhD, Peking University First Hospital
Publikacje i pomocne linki
Publikacje ogólne
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Daty zapisu na studia
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Terminy związane z tym badaniem
Słowa kluczowe
Dodatkowe istotne warunki MeSH
Inne numery identyfikacyjne badania
- 2026-1219-LT
- 82293644 (Inny numer grantu/finansowania: National Natural Science Foundation of China)
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Planujesz udostępniać dane poszczególnych uczestników (IPD)?
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Badania kliniczne na Chirurgia
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University Hospital TuebingenRobert Bosch-Krankenhaus StuttgartRekrutacyjny
Badania kliniczne na Dex-Esk
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