Basic Flashcards

In which one of the following muscle types are the filaments disorganized?

Answer: Smooth

Smooth muscle cells lack the highly organized sarcomeres and striations characteristic of skeletal and cardiac muscle. Their actin and myosin filaments are arranged in a more haphazard, crisscrossing pattern throughout the cytoplasm. This less organized arrangement allows smooth muscle to contract and stretch over a wider range of lengths, which is crucial for its function in organs like the digestive tract and blood vessels.

The usage of a pressured flow blood warmer has been reported to make a lot of noise. Which is NOT the most probable reason for this complaint?

Answer: A faulty peristaltic pump

Pressured flow blood warmers typically use a dry heat method to warm blood as it passes through a disposable cassette or tubing. They do not commonly incorporate peristaltic pumps, which are used to precisely control fluid flow in devices like infusion pumps. Therefore, a faulty peristaltic pump is highly unlikely to be the cause of noise in a pressured flow blood warmer, while mechanical issues like loose parts or a faulty compressor are more probable.

Which of the following best sums up the function of PING?

Answer: PING sends data to check the time to send and receive messages

PING (Packet Internet Groper) is a fundamental network utility designed to test the reachability of a host on an Internet Protocol (IP) network. It functions by sending ICMP echo request packets to a target and measuring the round-trip time for the echo reply packets. This process helps determine if a host is active and how long it takes for data to travel to and from that host, making it ideal for checking network connectivity and latency.

Which of the following elements is found in the hemodialysis circuit after filtration?

Answer: Air trap

In a hemodialysis circuit, the blood is processed outside the patient's body. After the blood has passed through the dialyzer (filter) and before it is returned to the patient, an air trap is a critical safety component. Its function is to capture any air bubbles that may have entered the circuit, preventing them from being infused back into the patient, which could cause a dangerous air embolism.

Which of the following does NOT arise frequently from utilizing heart-lung machines?

Answer: Heparin thickens the blood prior to recirculation

Heparin is an anticoagulant, meaning it is used to prevent blood from clotting. In heart-lung machines, heparin is administered to thin the blood and ensure it flows smoothly through the extracorporeal circuit without forming dangerous clots. Therefore, the statement that heparin thickens the blood is false; its purpose is precisely the opposite, to prevent coagulation.

In the following statements, which one is FALSE?

Answer: Household electronics are not permitted except for those with grounding conductors

In patient care environments, electrical safety standards are extremely stringent to protect patients from shock hazards. Household electronics, even those with grounding conductors, are generally not permitted in the patient vicinity unless they are specifically designed for medical use and undergo rigorous safety testing. This is because standard consumer devices may not meet the strict leakage current and insulation requirements necessary for patient safety, making the statement false.

What type of hypo/hyperthermia machine uses which thermoregulation technique?

Answer: Heating and cooling blankets

Hypo/hyperthermia machines are used to precisely control a patient's body temperature. The most common and direct thermoregulation technique these machines employ involves circulating temperature-controlled fluid through specialized blankets or pads. These heating and cooling blankets are placed on or around the patient, allowing for efficient and controlled transfer of thermal energy to or from the patient's body.