The section ‘MCQs for your EDAIC preparation’ covers a different topic each day with the intent that candidates can prepare one small topic each day, making steady progress in their exam preparation.
Question: True statements regarding ultrasound are
- Piezoelectric effect refers to the conversion of electrical energy into mechanical energy and vice versa
- Air casts a hyperechoic shadow
- Blood is anechoic fluid
- Barium zirconate is the most common piezoelectric crystal used in USG
- In colour doppler, the blue colour indicates venous blood while red colour indicates arterial blood
Explanation:
- Ultrasound waves are produced within the USG probe by crystals with piezoelectric properties.
- Lead zirconate is the most common crystal used in clinical practice for USG wave production.
- When an electric current is passed through a piezoelectric crystal, it leads to induction of mechanical vibration within the crystal, leading to the production of ultrasound waves.
- The reflected waves strike the piezoelectric crystals in the probe and cause rearrangement of the electric dipole within the crystals, generating electric energy or voltage which is carried back to the processor in the USG machine.
- Air appears hyperechoic while blood is hypoechoic with internal echoes due to the presence of solid elements.
- The blue colour in colour-doppler indicates blood flow away from the probe and red indicates blood flow towards the probe; the intensity of the colour is proportional to the velocity of flow.
Answers:
- true
- true
- false
- false
- false
Cardiopulmonary bypass Module
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- The basic CPB circuitry.
- Myocardial injury and preservation during CPB.
- Conduct and complications of CPB.
- The perioperative considerations surrounding the management of a patient undergoing CPB.
ANAESTHETIC IMPLICATIONS OF THE CARDIAC IMPLANTABLE ELECTRONIC DEVICES (CIEDs)
Cardiovascular physiology module by targetedaic
Targetedaic course modules are an excellent resource for EDAIC and FRCA exam preparation. Our modules are based on the syllabus and frequently asked questions in EDAIC-MCQ and viva examinations. The study material is designed to be a one-point reference for all your study needs for a topic and are available as separate chapters or combined system-based modules for your convenience and to suit your need. Feel free to contact us for any queries.
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The ‘MCQs for your EDAIC preparation’ section covers a different topic each day with the intent that candidates can prepare one small topic each day, making steady progress in their exam preparation.
