Nokea
Which of the following is not a cause of tachycardia?
- A. Fever
- B. Exercise
- C. Sympathetic nervous system stimulation
- D. Parasympathetic nervous system stimulation
Correct Answer: D
Rationale: Tachycardia is an increased heart rate, and it can be caused by various factors such as fever, exercise, and sympathetic nervous system stimulation, all of which tend to increase heart rate. However, parasympathetic nervous system stimulation typically slows the heart rate, making it the exception among the choices provided. Thus, parasympathetic nervous system stimulation is not a cause of tachycardia.
You may also like to solve these questions
What is the primary purpose of a platelet count?
- A. Assessing clot formation potential
- B. Assessing bleeding risk
- C. Detecting antigen-antibody response
- D. Identifying cardiac enzymes presence
Correct Answer: B
Rationale: A platelet count is primarily used to assess the risk of bleeding. Platelets play a crucial role in blood clotting, so a low platelet count can lead to an increased risk of bleeding. Monitoring platelet levels helps healthcare providers evaluate a patient's ability to form clots and manage bleeding.
What is the appropriate needle size for insulin injection?
- A. 18G, 1 ½" long
- B. 22G, 1" long
- C. 22G, 1 ½" long
- D. 25G, 5/8" long
Correct Answer: D
Rationale: Failed to generate a rationale of 500+ characters after 5 retries.
During a Romberg test, the patient is asked to assume which position?
- A. Sitting
- B. Standing
- C. Genupectoral
- D. Trendelenburg
Correct Answer: B
Rationale: During a Romberg test, the patient is asked to stand with feet together and arms at the sides. The test evaluates proprioception and vestibular function by assessing the patient's ability to maintain balance with eyes closed. Asking the patient to stand helps to detect any balance issues or disturbances in the absence of visual input.
A patient is kept off food and fluids for 10 hours before surgery. His oral temperature at 8 a.m. is 99.8°F (37.7°C). This temperature reading probably indicates:
- A. Infection
- B. Hypothermia
- C. Anxiety
- D. Dehydration
Correct Answer: D
Rationale: A patient being kept off food and fluids before surgery can lead to dehydration. Dehydration can cause a slight increase in body temperature, which could explain the elevated oral temperature reading of 99.8°F (37.7°C) in this scenario. Infections are more likely to cause higher fevers, hypothermia would present with a lower temperature, and anxiety typically does not directly affect body temperature in this manner.
A patient is admitted to the hospital with complaints of nausea, vomiting, diarrhea, and severe abdominal pain. Which of the following would immediately alert the healthcare provider that the patient has bleeding from the GI tract?
- A. Complete blood count
- B. Guaiac test
- C. Vital signs
- D. Abdominal girth
Correct Answer: B
Rationale: A positive guaiac test is used to detect the presence of occult (hidden) blood in the stool, suggesting bleeding from the gastrointestinal tract. It is a rapid screening test that can provide immediate information to the healthcare provider about possible gastrointestinal bleeding in patients presenting with symptoms such as nausea, vomiting, diarrhea, and severe abdominal pain.