Diagnostic Performance of General Practitioners in Compression UltraSound

University Hospital, Caen15 enrolled

Overview

The objective of this study is to evaluate the diagnostic efficiency of general practitioners for the diagnosis of proximal deep vein thrombosis of the lower limbs compared with whole-leg ultrasound with Doppler performed by the vascular physician.

After being informed about the study and the potential risks, all patients who have given their written consent and who meet the eligibility criteria will benefit from a 3-point compression ultrasound performed by the general practitioner before being referred for a whole-leg ultrasound with Doppler at the vascular physician.

Study Type

INTERVENTIONAL

Allocation

Purpose

DIAGNOSTIC

Masking

NONE

Enrollment

Conditions

Deep Vein Thrombosis

Interventions

Compression ultrasoundDIAGNOSTIC_TEST

Patients receive a 3-point compression ultrasound performed by the general practitioner to look for proximal deep vein thrombosis.

Eligibility

Sex: ALLMin age: 18 YearsMax age: 110 Years

Medical Language ↔ Plain English

Inclusion Criteria: * Age greater than or equal to 18 years * Management by a general practitioner trained in 3-point venous ultrasound * Suspicion of deep vein thrombosis by the general practitioner with prescription of a whole-leg Doppler ultrasound by a vascular physician. It is noted that the patient can be included from the moment the general practitioner had planned to refer the patient to the vascular physician for a suspicion of DVT, including in the absence of realization of DDimer on a low probability of DVT. It may also be included in case of positive DDimer tests. * Signed written consent * Patient covered by the French social security system Exclusion Criteria: * Whole leg ultrasound performed more than 72 hours after the initial examination * History of homolateral deep vein thrombosis * Patient objecting to the use of his data * Refusal of written and signed consent

Locations (19)

Bayeux

Bayeux, Normandy, France

Avranches

Avranches, France

Bain de Bretagne

Bain-de-Bretagne, France

Outcomes

Primary Outcomes

Diagnostic performance of 3 point venous compression

The diagnostic performance (Sensitivity, Specificity, Positive Predictive Value, Negative Predictive Value) of 3-point venous compression ultrasound performed by general practitioners for the diagnosis of proximal venous thrombosis of the lower limbs compared to the usual recommended examination (whole leg ultrasound by a vascular physician)

Time frame: 72 hours

Secondary Outcomes

The evaluation of the feasibility of venous compression ultrasound in the office by the general practitioner.

For each patient, the general practitioner must say whether or not he or she was successful in performing the compression ultrasound. The measure will be the percentage of ultrasound examinations considered successful by general practitioners.

Time frame: 72 hours

Duration of the ultrasound performed by the general practitioner in minutes.

Time frame: 72 hours

The interpretability of ultrasound images by general practitioners

The interpretability of ultrasound images by general practitioners. For each patient, the general practitioner must note the result of his or her ultrasound (compressibility or total incompressibility of the veins on the 3 points studied). He must also correctly interpret the ultrasound result (presence of venous thrombosis in case of total incompressibility of the vein or absence of thrombosis in case of total compressibility of the vein). The measure will be the percentage of correct interpretation of the compression test.

Time frame: 72 hours

Data from ClinicalTrials.gov

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