« previous next »

Author Question: The P wave represents which of the following? a. Atrial contraction b. Atrial depolarization ... (Read 37 times)

burchfield96

  • Hero Member
  • *****
  • Posts: 610
on: Jun 25, 2018
The P wave represents which of the following?
 
  a. Atrial contraction
  b. Atrial depolarization
  c. Sinus node discharge
  d. Ventricular contraction

Question 2

A patient has acute kidney injury (previously known as acute tubular necrosis). The following blood work was noted: complete blood count shows a white blood cell count of 11,000 mm3, a hemoglobin of 8 g/dL, and a hematocrit of 30.
 
  His chemistry panel shows serum potassium, 4.5 mg/dL; serum sodium, 135 mg/dL; serum calcium, 8.5 mg/dL; BUN, 20 mg/dL; and creatinine, 1.5 mg/dL. What laboratory value(s) need(s) to be treated most immediately and why?
 
  a. Administration of 5 dextrose in water and insulin because the patient is hyperkalemic and needs this level reduced
  b. Administration of Epogen to treat anemia
  c. Administration of a broad-spectrum antibiotic to treat the elevated blood cell count
  d. Administration of a calcium supplement for low calcium


billybob123

  • Sr. Member
  • ****
  • Posts: 336
Reply #1 on: Jun 25, 2018
Answer to Question 1

B
The P wave is an electrical event and represents atrial depolarization. Atrial contraction should accompany the P wave but does not always. The sinus node discharge is too faint to be recorded on the surface electrocardiogram. Ventricular contraction usually accompanies the QRS complex.

Answer to Question 2

B
A patient showing signs of anemia per his hematocrit and hemoglobin must be treated. Epogen is used because it helps stimulate erythrocyte production by the bone marrow.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Atropine, along with scopolamine and hyoscyamine, is found in the Datura stramonium plant, which gives hallucinogenic effects and is also known as locoweed.

Did you know?

All adverse reactions are commonly charted in red ink in the patient's record and usually are noted on the front of the chart. Failure to follow correct documentation procedures may result in malpractice lawsuits.

Did you know?

In ancient Rome, many of the richer people in the population had lead-induced gout. The reason for this is unclear. Lead poisoning has also been linked to madness.

Did you know?

Many medications that are used to treat infertility are injected subcutaneously. This is easy to do using the anterior abdomen as the site of injection but avoiding the area directly around the belly button.

Did you know?

As the western states of America were settled, pioneers often had to drink rancid water from ponds and other sources. This often resulted in chronic diarrhea, causing many cases of dehydration and death that could have been avoided if clean water had been available.

An ECG strip showing a normal sinus rhythm with the P wave, QRS complex, and T wave identified. An ECG strip showing a normal sinus rhythm with the P wave, QRS complex, and T wave identified.
In 2008, the U.S. economy suffered a gaping wound as several trillion dollars were ripped out of it. In 2008, the U.S. economy suffered a gaping wound as several trillion dollars were ripped out of it.
P wave (SA node initiates atrial depolarization). P wave (SA node initiates atrial depolarization).
For millions of people, the United States represents a land of opportunity and freedom from ... For millions of people, the United States represents a land of opportunity and freedom from ...
How to determine if a table of values represents a linear or quadratic relationship How to determine if a table of values represents a linear or quadratic relationship
Three metabolic pathways that muscles use to obtain the ATP that fuels their contraction. Three metabolic pathways that muscles use to obtain the ATP that fuels their contraction.
Video: Appendicitis Animation

For a complete list of videos, visit our video library