What condition results from over-stimulation of pain, pressure, and temperature receptors, causing significant discomfort?

Choice A rationale

Needlestick injuries are a primary route of transmission for bloodborne pathogens such as Hepatitis B, Hepatitis C, and HIV. Hepatitis A, however, is not typically transmitted through blood exposure because the virus is primarily shed in the feces and is not found in high concentrations in the blood for extended periods. Healthcare workers are at risk for other types of hepatitis via needles, but Hepatitis A is largely an enteric virus spread via the fecal-oral route.

Choice B rationale

Intravenous drug use is a major risk factor for Hepatitis B and C due to the direct sharing of contaminated needles and blood. While any infection can theoretically occur, Hepatitis A is rarely transmitted this way. The epidemiology of Hepatitis A centers on poor sanitation and contaminated food or water. Although some outbreaks have occurred in drug-using populations, it is usually due to poor hygiene and living conditions rather than the act of intravenous injection itself.

Choice C rationale

Eating raw or undercooked shellfish is a well-known risk factor for Hepatitis A. Shellfish, such as oysters and clams, are filter feeders that can concentrate the virus if they live in water contaminated by sewage. If a person consumes these animals raw, they ingest the virus, which then infects the liver. This is a classic example of fecal-oral transmission. Prevention includes proper sewage treatment and ensuring shellfish are harvested from clean waters and thoroughly cooked.

Choice D rationale

Blood transfusions were historically a risk for various forms of hepatitis, but modern screening of the blood supply has made this extremely rare for Hepatitis A. Furthermore, Hepatitis A is characterized by a very short viremic phase, meaning the virus is only in the blood for a brief window. Most cases are linked to contaminated food, water, or close personal contact with an infected person. It is not considered a primary transfusion-transmitted infection in clinical practice today.

Choice A rationale

Decreased blood pressure is usually a sign of autonomic neuropathy rather than simple peripheral neuropathy. While peripheral neuropathy affects the distal nerves of the limbs, autonomic dysfunction affects the nerves controlling involuntary functions like vascular tone. A drop in blood pressure, specifically orthostatic hypotension, is a related but distinct neurological complication. Therefore, decreased blood pressure is not the primary expected complication when discussing sensory or motor deficits in the extremities of the patient.

Choice B rationale

Increased blood sugar is a common cause of peripheral neuropathy, particularly in diabetes mellitus, rather than a complication of the neuropathy itself. Chronic hyperglycemia leads to the glycation of proteins and oxidative stress that damages the myelin sheath and axons. High glucose levels remain an ongoing metabolic issue that the patient must manage to prevent further nerve damage. It is the metabolic driver of the condition, not a secondary physiological outcome resulting from nerve death.

Choice C rationale

Decreased urine output is generally associated with renal dysfunction or dehydration rather than peripheral neuropathy. While neurogenic bladder can occur if the autonomic nerves serving the urinary system are damaged, peripheral neuropathy typically focuses on the long nerves of the hands and feet. Urinary retention or decreased output would point toward kidney failure or a lower urinary tract obstruction. It is not a standard complication of the sensory and motor losses found in the limbs.

Choice D rationale

Increased falls are a major complication of peripheral neuropathy due to the loss of proprioception and sensory feedback from the feet. When a person cannot feel the ground or determine the position of their joints, their balance is severely compromised. Additionally, motor nerve damage can lead to muscle weakness and foot drop, further increasing the risk of tripping. This lack of sensory input makes navigating uneven surfaces difficult, leading to a high incidence of injury.