Skip to main content

Table 1 Required equipment and maintenance rules

From: High quality standards for a large-scale prospective population-based observational cohort: Constances

Exam Equipment recommendations Daily verification Monthly verification Annual verification Procedure
Weight • Class III medical scale CE marked
• Required precision: ± 0.1 kg
• Amplitude: 2.0–150.0 kg minimum
• Spirit level verification
• Zero displayed before use
NA • Performed by an external certified body. • Volunteer in underwear, motionless.
• Measurement read by the nurse once stabilization obtained.
Height • Measuring rod
• Graduation: 1 cm
• Amplitude: 60–200 cm
• 10 cm space between heels indicated by floor markings.
• 0 graduation at the ground level – 1 mm tolerance permitted • Cross-checking with the tape measure • Performed by an external certified body. • Volunteer standing, arms at sides, inside heels 10 cm apart, head upright, looking straight, deep breath in. Measurement read by the nurse, with slider at eye-level.
Waist-hips-abdominal circumference • Tape measure with 2 sides of different colors.
• Graduation: 1 cm
• Amplitude: 0–150 cm
• Signs of wear • Cross-checking with the measuring rod • Renew every year • Volunteer in underwear, standing with feet shoulder-width apart, arms slightly apart, motionless.
• Palpation of anatomical landmarks for right positioning (Waist: mid-axillary line; Hips: widest level over the greater trochanters)
• Ensure horizontality of the tape measure with no twists.
• Tape measure snug but not digging into the skin.
• Measurement read by the nurse on the exhale.
Arterial pressure • Tensiometers provided by The “Constances” research team: OMRON 705.
• Accuracy of measurement: ±3 mmHg
• Amplitude: 0–300 mmHg
• Search for anomalies of the entire pneumatic circuit NA • Centralized and organized by the Constances research team • Point of reference on the blood pressure cuff according to the arm circumference.
• Volunteer in supine position.
• First reading after a 5-minute rest, second reading on the contralateral arm, third reading after a 1-minute pause on the arm with the highest systolic blood pressure.
• Orthostatic hypotension measured after standing for 1 min
ECG • 12 standard ECG leads
• Screen display and software program that ensures the overall management
• Recording features: speed (25 mm per second), amplitude (10 mm by mV), leads and filters.
• Examination table with a minimum width of 65 cm to avoid muscular contractions or arms falling off table.
• Signs of wear.
• Calibration signal at the beginning of each trace.
NA • Performed by an external certified body. • Volunteer in supine position, calm, arms at sides.
• Thorough skin preparation (remove grease)
• Ensure a good electrode-to-patient contact.
• Palpation of anatomical landmarks for proper placement of the electrodes
Far visual acuity • Monoyer scale
• Floor marking to indicate the required reading distance of 3 or 5 m
• Unit: 1/10
• Required precision: ± 1/10
• Amplitude: 0/10–10/10
• Signs of wear, dirt • Signs of wear NA • Volunteer standing or seated
• For monocular visual acuity: cover placed on one eye with no pressure
Near visual acuity • Parinaud scale
• Unit: Parinaud
• Amplitude: 1.5–20
• Specific device provided by Constances to standardize the scale-brow distance (33 cm).
• Signs of wear, dirt • Signs of wear NA • Volunteer seated
• Specific device in contact with the volunteer’s brow
• For monocular visual acuity: cover placed on one eye with no pressure
Audition • Required precision: ± 3 dB from 500 to 4,000Hz and ± 5 dB beyond
• Amplitude: −10 to 85 dB by 5 dB steps minimum
• Test hearing by air conduction using a pulsed tone at various frequencies (from −10 to 85 dB – change by 5 dB steps).
• Control test of each frequency at 60 dB both sides NA • Performed by an external certified body • Response mode: hand raised / response button pressed, held as long as tone is heard
• Volunteer unable to see the operator
• Headphones placed by the operator
• Start by a demonstration
• Otoscopy (to detect excessive earwax)
Spirometry • As per requested by ATS/ERS task force
• Unit: L
• Required precision: 0.035 L
• Amplitude: 0–8 L
• Performed in accordance with the ATS/ERS guidelines NA • Performed by an external certified body in accordance with the ATS/ERS guidelines • Performed in accordance with the ATS/ERS guidelines