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Clinical Trials in Spain / NCT07568158
Recruiting Observational

Intraoperative Cognitive Load in Anesthesia Nurses Across Anesthetic Phases

NCT07568158 · tracked via the Priya Life Science Spain tracker
Sponsor
Hospital Clinic of Barcelona
Phase
Observational
Started
2026-06-01
Last updated
2026-07-13

Condition(s) studied

Alarm FatiguePerioperativePatient SafetyCognitive LoadPerformanceCognitive Load, Performance

Investigational drug(s) / intervention(s)

NASA Task Load Index (NASA-TLX)

NASA Task Load Index (NASA-TLX): The Raw NASA Task Load Index (NASA-TLX) is a validated self-report questionnaire measuring subjective cognitive load across six dimensions: mental demand, physical demand, temporal demand, performance, effort, and frustration (scale 0-100). Administered three times per surgical case (T1, T2, T3) by the participating anesthesia nurse. Additionally, four questions about monitor alarm perception and management are completed after T3.

Study summary

The goal of this observational study is to measure the cognitive load (mental effort) of anesthesia nurses during real surgical procedures at Hospital Clínic de Barcelona, Spain. The main questions it aims to answer are:

* Does cognitive load vary across the three phases of anesthetic care (induction, maintenance, and emergence/recovery)?
* Is cognitive load higher during general anesthesia than during spinal anesthesia with sedation?
* How do surgical specialty and patient complexity relate to cognitive load?
* How does monitor alarm perception relate to cognitive load during surgery?

Participants (anesthesia nurses) will complete the NASA Task Load Index (NASA-TLX) questionnaire - a validated 6-item tool measuring mental effort - three times per surgical case: after induction or spinal block, during maintenance, and after patient awakening or sedation reversal. They will also answer 4 brief questions about alarm management at the end of each case. No changes are made to clinical care. Participation adds approximately 11 minutes per surgical case.

Eligibility

Sex
ALL
Min age
18 Years
Max age
—
Healthy volunteers
Accepted
Inclusion Criteria: * Registered nurse anesthetist actively working at Hospital Clínic de Barcelona. * Minimum 3 months in the current anesthesia nursing position. * Voluntary participation with signed informed consent. * Scheduled surgery (including deferred urgent surgery) or solid organ transplantation. * General anesthesia (endotracheal intubation or laryngeal mask airway) or spinal anesthesia with sedation. * Minimum duration of 30 minutes. Exclusion Criteria: * Refusal to participate or withdrawal of informed consent. * Spinal anesthesia without sedation. * Exclusive regional anesthesia without sedation. * Sedation alone without regional technique. * Duration less than 30 minutes. * Cases involving an unexpected intraoperative emergency requiring urgent additional personnel. * Cases started under spinal anesthesia converted to general anesthesia for any clinical or technical reason.

Primary outcome measure(s)

  • Global Raw NASA-TLX Score — At three time points per surgical case: T1 (5 minutes post-induction/spinal block), T2 (during maintenance, before surgical closure), and T3 (5 minutes after extubation/end of sedation ).
    Subjective cognitive load measured using the Raw NASA Task Load Index (NASA-TLX), calculated as the arithmetic mean of six subscales (mental demand, physical demand, temporal demand, performance, effort, and frustration), each rated on a 0-100 scale. Administered three times per surgical case: after induction or spinal block (T1), during maintenance (T2), and after extubation or end of sedation (T3). Study duration: approximately 8 months.

Trial sites (1)

FacilityCityRegionStatus
Hospital Clínic de Barcelona Barcelona Catalonia Recruiting

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Official registry record

This page summarises publicly available registry data for informational purposes — not medical advice. Eligibility is determined by each study team; patients should discuss participation with their clinician.

View NCT07568158 on ClinicalTrials.gov ↗ ← All trials in Spain