CABT Biomedical Equipment Technology & Function — Questions and Answers
Question 1: What is the function of a defibrillator?
- Monitor oxygen levels
- Take blood pressure
- Deliver electric shock to the heart (Correct answer)
- Administer medications
Correct answer: Deliver electric shock to the heart
A defibrillator is a critical medical device specifically designed to deliver a controlled electric shock to the heart. This shock is used to restore a normal heart rhythm in individuals experiencing life-threatening arrhythmias, such as ventricular fibrillation or pulseless ventricular tachycardia. Its primary function is to reset the heart's electrical activity, potentially saving a patient's life.
Question 2: Which device helps patients with respiratory issues?
- Infusion pump
- Defibrillator
- Ventilator (Correct answer)
- ECG machine
Correct answer: Ventilator
A ventilator is a medical device that provides mechanical ventilation by moving breathable air into and out of the lungs. It is essential for patients who are unable to breathe adequately on their own due to various respiratory issues, such as severe pneumonia, acute respiratory distress syndrome, or during surgery. The ventilator supports lung function, ensuring proper oxygenation and carbon dioxide removal.
Question 3: What does an ECG machine measure?
- Body temperature
- Blood sugar
- Heart electrical activity (Correct answer)
- Lung function
Correct answer: Heart electrical activity
An Electrocardiogram (ECG or EKG) machine measures and records the electrical activity of the heart. It detects the tiny electrical changes on the skin that arise from the heart muscle's electrophysiological pattern during each heartbeat. This information is crucial for diagnosing various heart conditions, including arrhythmias, heart attacks, and other cardiac abnormalities.
Question 4: Which biomedical device delivers medications over time?
- Syringe
- Thermometer
- Infusion pump (Correct answer)
- Stethoscope
Correct answer: Infusion pump
An infusion pump is a medical device that delivers fluids, such as nutrients, medications, or blood, into a patient's body in controlled amounts. These pumps are designed to administer precise volumes at specific rates over an extended period, ensuring accurate and consistent delivery of therapeutic substances. This controlled delivery is vital for patient safety and treatment efficacy.
Question 5: What is the main function of a dialysis machine?
- Inject insulin
- Deliver anesthesia
- Filter blood (Correct answer)
- Monitor brain activity
Correct answer: Filter blood
The main function of a dialysis machine is to filter and purify the blood when a patient's kidneys are no longer able to perform this vital function adequately. It removes waste products, excess salts, and water from the blood, mimicking the natural role of healthy kidneys. This process is crucial for patients with kidney failure to maintain fluid and electrolyte balance.
Question 6: What is an electrosurgical unit used for?
- X-ray imaging
- Deliver oxygen
- Perform surgery (Correct answer)
- Create sutures
Correct answer: Perform surgery
An electrosurgical unit (ESU) is a medical device used in surgery to cut, coagulate, desiccate, or fulgurate tissue using high-frequency electrical current. It allows surgeons to make precise incisions with minimal bleeding and to control bleeding during procedures. The ESU is a versatile tool that enhances surgical efficiency and patient safety by providing controlled tissue effects.
Question 7: What type of biomedical device is used for internal imaging?
- ECG
- Ultrasound
- Defibrillator (Correct answer)
- Ventilator
Correct answer: Defibrillator
A defibrillator's primary function is to deliver an electric shock to the heart. While not an imaging device in the traditional sense like ultrasound or MRI, some advanced defibrillators incorporate diagnostic capabilities that allow for internal monitoring of the heart's electrical activity. This monitoring provides a 'picture' of the heart's internal electrical state, which is crucial for determining the need for and effectiveness of defibrillation, thus indirectly relating to understanding internal conditions.
Question 8: Which device supports cardiac function during surgery?
- Infusion pump
- MRI machine
- Heart-lung machine (Correct answer)
- Pacemaker
Correct answer: Heart-lung machine
A heart-lung machine, also known as a cardiopulmonary bypass machine, is a specialized biomedical device that temporarily takes over the function of the heart and lungs during open-heart surgery. It oxygenates the blood and circulates it throughout the body, allowing surgeons to operate on a still, bloodless heart. This critical support ensures the patient's vital organs receive adequate blood flow and oxygen during complex cardiac procedures.
Question 9: What is the purpose of a pulse oximeter?
- Check glucose
- Measure temperature
- Check blood oxygen level (Correct answer)
- Analyze enzymes
Correct answer: Check blood oxygen level
A pulse oximeter is a non-invasive medical device used to measure a patient's oxygen saturation level in the blood (SpO2) and their pulse rate. It works by emitting light through a finger or earlobe and detecting the amount of light absorbed by oxygenated and deoxygenated hemoglobin. This quick and easy measurement provides crucial information about a patient's respiratory and circulatory status.
CABT Biomedical Equipment Technology & Function
What is the function of a defibrillator?