Real-time Comparison of Left Ventricular Strokevolume Measurement by Four Different Methods

Real-time Comparison of Left Ventricular Strokevolume Measurement by Four Different Methods

Real-time comparison of three different bedside strokevolumemeasurements (arterial waveform analysis, eosofageal doppler and 2D transthoracal ultrasound) validated against cardiac magnetic resonance imaging (CMRI)

20 healthy volounteers between age of 20-40 years, no previous medical history undergo simoultaneous left ventrikular strokevolume measurements using three different methods at rest. After datasampling and without moving, the subject then undergo Cardiac Magnetic Resonance Imaging with 2D-throughplane and cine tecnology for validation of volume measurements. The data is then analyzed using Bland-Altman calculation.

Inclusion Criteria:Healthy volounteers age 20-40, BMI < 30, weight < 100 kg, no medications, sinus rythm on ECG, no contra-indications for MRI, ability to give written informed consent.

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Exclusion Criteria:

• Heart and/or vascular disease such as angina pectoris, arrythmias, claudicatio intermittens e g.
• Diseases in gastrointestinal tract or nose.
• Coagulopathies
• Pregnancy
• Allergys for local anaesthetics
• Claustrofobia