Continuous Vital Sign Monitoring Versus Routine Spot-checks in Patients After Non-cardiac Surgery

Trial statusRecruiting
Trial phaseNot applicable
Trial typeInterventional
Biological sexAll
Age45+
SponsorUniversitätsklinikum Hamburg-Eppendorf

About this trial

The "COME ON, NOW!" trial is a randomized, single-center trial in patients recovering from non-cardiac surgery on normal wards investigating whether continuous vital sign monitoring - compared to routine spot-checks by nurses - reduces the total duration of abnormal vital signs per hour during the first 48 hours after admission to the normal ward.

Eligibility criteria

This trial does not accept healthy volunteers

Qualifiers

None

Disqualifiers

Emergency surgery

Pregnancy

Impossibility to perform continuous monitoring with the Radius VSM sensor (Masimo, Irvine, CA)

Atrial fibrillation

Trial design

Design model

Parallel

Treatments tested in this trial

  • Unblinded continuous vital sign monitoring

    Device

    Continuous ward monitoring with vital signs available to investigators. Oxygen saturation, blood pressure (intermittent in intervals of 60 minutes), heart rate, and respiratory rate will be continuously measured and streamed to the investigators (specifically, to a central monitor). The investigators will alert nurses or physicians when SpO2 is \<85% for ≥2 minutes, respiratory rate is \<7/min or \>30/min for ≥2 minutes, MAP is \<60 mmHg, or heart rate is \<45 bpm or \>130 bpm for ≥2 minutes, or in case of apnea for ≥1 minute - supplemented by clinical judgement and the complete electronic record. Investigators will alert clinicians when concerning patterns are identified, whether or not alerts have been triggered. Clinicians will determine if response is necessary and what interventions might be appropriate.

  • Blinded continuous vital sign monitoring

    Device

    Continuous ward monitoring with vital signs recorded but not available to patients, clinicians, or investigators.

Treatment groups

264 Participants
are divided into 2 treatment groups
Group A: Blinded continuous vital sign monitoringSham comparator 1 intervention
Group B: Unblinded continuous vital sign monitoringExperimental treatment 1 intervention

Trial outcomes

Primary outcomes

1

Total duration of abnormal vital signs

Total duration of abnormal vital signs per hour (minutes per hour) during the first 48 hours after admission to the normal ward, i.e., the minutes per hour patients have any of the following abnormal vital signs ("any versus none"): peripheral oxygen saturation (SpO2) \<85%, mean arterial pressure (MAP) \<60 mmHg, heart rate \<45 bpm or \>130 bpm, and respiratory rate \<7/min or \>30/min.

Time frame
48 hours after admission to the normal ward

Secondary outcomes

1

Individual components of the composite primary endpoint

Total duration of a SpO2 \<85% per hour (minutes per hour)

Time frame
48 hours after admission to the normal ward
2

Individual components of the composite primary endpoint

Total duration of a MAP \<60 mmHg per hour (minutes per hour)

Time frame
48 hours after admission to the normal ward
3

Individual components of the composite primary endpoint

Total duration of a heart rate \<45 bpm per hour (minutes per hour)

Time frame
48 hours after admission to the normal ward
4

Individual components of the composite primary endpoint

Total duration of a heart rate \>130 bpm per hour (minutes per hour)

Time frame
48 hours after admission to the normal ward

Other outcomes

1

Composite of serious in-hospital complications

The investigators will also record components of our exploratory composite of serious in-hospital complications, including naloxone administration, rapid-response team activation, unplanned ICU transfer, revision surgery, infectious complications, myocardial infarction, stroke, unplanned tracheal intubation, non-fatal cardiac arrest, and death during the first 48 hours after admission to the normal ward and during hospital stay.

Time frame
48 hours after admission to the normal ward
2

Time-to-event endpoint

Time-to-event endpoint with the event "hospital discharge" within 30 days after surgery.

Time frame
30 days after index surgery

Sponsors and contacts

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