NCT05434169

Brief Summary

Pain, defined as a disagreeable sensory or emotional experience, is the most frequent symptom among patients admitted to the emergency department (ED). It is estimated that this symptom can be observed in almost 80% of patients upon their arrival to the ED. Despite several international recommendations concerning pain management, pain in the context of an emergency situation often remains underestimated. Medical procedures, such as venous or arterial blood collection, which are essential for diagnostic management and patient care, can also generate pain and a high level of stress for patients who are already weakened by their underlying condition. This is known as "care-related pain". Arterial blood gas (ABG) sampling is necessary to assess the gravity of the patient's condition and is a procedure conducted routinely in the ED. In a medium-size hospital (30,000 hospitalizations per year), approximately 1000 ABG tests are conducted annually. However, ABG collection is generally associated with pain and patient anxiety. In order to decrease the perception of pain linked to the collection of arterial blood, several methods have been studied, such as applying a topical anesthetic cream (lidocaine, xylocaine) or a subcutaneous infection of lidocaine prior to the procedure. Given that ABG collection is often performed in emergency situations and that the anesthetic cream must be applied at least one hour before sampling, this method is not adapted to emergency practices. In a previous study, a subcutaneous injection of lidocaine did not allow to significantly reduce pain during radial artery puncture. Similarly, another study using ultrasound guidance for ABG sampling did not show any significant decrease in pain, the rate of immediate complications, or physician satisfaction. Apart from the therapeutic tools commonly used, communication is a key element of care. In routine practice, caregivers inform patients that they are going to perform a potentially painful act. However, forewarning a patient that one will perform a painful act increases the perception of pain. It has also been shown that a communication strategy including the use of positive, kind or reassuring terms ("let me reassure you…", "are you comfortable?", "are you warm enough?") can contribute to decreasing the pain, while conversely, the choice of terms with a negative connotation ("okay, this might sting", "don't panic", "are you in pain?", "are you cold?") may increase the perception of pain and provoke a sense of discomfort. In the latter case, this is known as the "nocebo" effect. A communication strategy including reassuring terms, perceived by the brain as an agreeable information, allows to decrease the penibility dimension or connotes otherwise the pain in order to make it more bearable, thus modulating the painful perception. The objective of this strategy is that the painful message becomes less present as much as possible and that the patient benefits from a feeling of control. This procedure is widely used in hypnosis communication and is based on a neurobiological rationale, i.e., an increase in the secretion of endogenous opioids affecting the pain modulation networks decreases transmission in the pain pathways, thus leading to a release of dopamine in the striatum. This technique has already shown to be of benefit in patient management in various domains, such as anesthesia and pediatrics. Arrival at the ED can induce a particular state of consciousness linked to anxiety and a heightened suggestibility of negative communication. Although several studies have compared the impact of verbal attitudes, notably in the domain of anesthesia and mainly with staff already trained in hypnosis, to our knowledge, none has studied the effect of positive communication by caregivers or physicians among a patient population in the ED setting. Given the limited therapeutic options to relieve the pain and discomfort of blood collection performed in the ED, we would like to evaluate in this study the potential benefit of positive therapeutic communication on pain and anxiety among patients who require ABG compared to nocebo or neutral communication.

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
279

participants targeted

Target at P75+ for not_applicable

Timeline
Completed

Started Mar 2023

Geographic Reach
1 country

1 active site

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

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Study Timeline

Key milestones and dates

First Submitted

Initial submission to the registry

June 13, 2022

Completed
14 days until next milestone

First Posted

Study publicly available on registry

June 27, 2022

Completed
8 months until next milestone

Study Start

First participant enrolled

March 1, 2023

Completed
1.5 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

August 28, 2024

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

August 28, 2024

Completed
Last Updated

August 30, 2024

Status Verified

August 1, 2024

Enrollment Period

1.5 years

First QC Date

June 13, 2022

Last Update Submit

August 28, 2024

Conditions

Keywords

PainTherapeutic communicationHypnosisEmergency departmentArterial blood gasBlood sampling

Outcome Measures

Primary Outcomes (1)

  • Change of Pain

    Self-evaluation of maximum pain felt by the patient during collection of an ABG sample on a Verbal Rating Scale (VRS) (0 = no pain - 10 = worst imaginable pain)

    Change of Pain at 3 minutes after the procedure from baseline

Secondary Outcomes (4)

  • Change of Comfort

    Change of Comfort at 3 minutes after the procedure from baseline

  • Change of Anxiety

    Change of Anxiety at 3 minutes after the procedure from baseline

  • Puncture failure

    at 3 minutes after the procedure

  • Global satisfaction with the communication strategy used

    at 3 minutes after the procedure

Study Arms (3)

Positive Therapeutic communication

EXPERIMENTAL
Biological: Arterial Blood Gas

Nocebo communication

ACTIVE COMPARATOR
Biological: Arterial Blood Gas

Neutral communication

ACTIVE COMPARATOR
Biological: Arterial Blood Gas

Interventions

The procedure of arterial blood collection will be conducted in a seated position for all three groups. The patient is in a supine position, with the forearm comfortably placed on a small table. The needle used for blood collection is a 25 gauge needle without local anesthetic. This method of sampling is identical to the one used in daily practice in the Emergency department of Fribourg

Neutral communicationNocebo communicationPositive Therapeutic communication

Eligibility Criteria

Age18 Years+
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Patients over 18 years of age.
  • Patients scheduled to undergo radial ABG collection during their visit to the ED to allow to pursue routine care.
  • Free and informed consent of the patient received orally from one of the study investigators at study entry.

You may not qualify if:

  • Vital emergency requiring immediate resuscitation
  • Patients incapable of judgement.
  • Patients with conditions that render them unable to participate in the intervention of the present study, e.g., cognitive impairment, major hearing loss without the use of hearing aids, acute psychiatric disorders, under intravenous or oral sedation.
  • Patients with an insufficient understanding of the French language as defined by self-evaluation.
  • Local anesthesia (subcutaneous, transdermal patch) at the point of ABG puncture.
  • Patients already treated with anxiolytics or sedatives during care at the ED.

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Firbourg Hospital

Fribourg, 1700, Switzerland

Location

Related Publications (1)

  • Schmutz T, Le Terrier C, Ribordy V, Iglesias K, Guechi Y. The Effect of Positive Therapeutic Communication on Pain (POPAIN) and Anxiety During Arterial Blood Gas Standardized Procedures in the Emergency Department Compared to Traditional Communication: Protocol for a Monocentric Randomized Controlled Trial. JMIR Res Protoc. 2023 Jun 13;12:e42043. doi: 10.2196/42043.

MeSH Terms

Conditions

PainEmergencies

Interventions

Blood Gas Analysis

Condition Hierarchy (Ancestors)

Neurologic ManifestationsSigns and SymptomsPathological Conditions, Signs and SymptomsDisease AttributesPathologic Processes

Intervention Hierarchy (Ancestors)

Blood Chemical AnalysisClinical Chemistry TestsClinical Laboratory TechniquesDiagnostic Techniques and ProceduresDiagnosisRespiratory Function TestsDiagnostic Techniques, Respiratory SystemInvestigative Techniques

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
TRIPLE
Who Masked
PARTICIPANT, INVESTIGATOR, OUTCOMES ASSESSOR
Purpose
SUPPORTIVE CARE
Intervention Model
PARALLEL
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Dr.

Study Record Dates

First Submitted

June 13, 2022

First Posted

June 27, 2022

Study Start

March 1, 2023

Primary Completion

August 28, 2024

Study Completion

August 28, 2024

Last Updated

August 30, 2024

Record last verified: 2024-08

Locations