This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: What has the greatest influence on preload? A. Blood pressure B. Contractility C. Fluid ... (Read 35 times)

jon_i

  • Hero Member
  • *****
  • Posts: 549
on: Jun 28, 2018
What has the greatest influence on preload?
 
  A.
  Blood pressure
  B.
  Contractility
  C.
  Fluid volume
  D.
  Heart rate

Question 2

A nurse is teaching a community class on heart disease in children. Which information about prevention is most important for the nurse to share?
 
  A.
  Many conditions are genetic, and preventative gene therapy may become possible.
  B.
  Maintaining good control of diabetes and hypertension prevents most cases.
  C.
  Prevention is impossible because there are few known causes of heart disease.
  D.
  Taking 400 mg/day of folic acid will prevent most known cardiac diseases.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Mholman93

  • Sr. Member
  • ****
  • Posts: 328
Reply #1 on: Jun 28, 2018
Answer to Question 1

ANS: C
Preload is equivalent to venous blood return to the atria and end diastolic volumes of the heart. This is directly influenced by fluid volume. Heart rate and contractility have some influence, but they are not the major determinants of preload. Blood pressure is not a direct influence on preload.

Answer to Question 2

ANS: A
Most cases of congenital cardiac disease have no known cause. The most accurate statement is that genetic causes of heart disease may be prevented with gene therapy in the future. Controlling chronic health conditions is important but not the most accurate answer. Prevention is not totally impossible. Folic acid is important but has the most impact on preventing neural tube defects.


jon_i

  • Member
  • Posts: 549
Reply 2 on: Jun 28, 2018
Great answer, keep it coming :)

debra928

  • Member
  • Posts: 342
Reply 3 on: Yesterday
:D TYSM

« previous next »
 

Did you know?

Liver spots have nothing whatsoever to do with the liver. They are a type of freckles commonly seen in older adults who have been out in the sun without sufficient sunscreen.

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?

In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.

Did you know?

People who have myopia, or nearsightedness, are not able to see objects at a distance but only up close. It occurs when the cornea is either curved too steeply, the eye is too long, or both. This condition is progressive and worsens with time. More than 100 million people in the United States are nearsighted, but only 20% of those are born with the condition. Diet, eye exercise, drug therapy, and corrective lenses can all help manage nearsightedness.

Did you know?

Once thought to have neurofibromatosis, Joseph Merrick (also known as "the elephant man") is now, in retrospect, thought by clinical experts to have had Proteus syndrome. This endocrine disease causes continued and abnormal growth of the bones, muscles, skin, and so on and can become completely debilitating with severe deformities occurring anywhere on the body.

Pressure-flow hypothesis for phloem transport Pressure-flow hypothesis for phloem transport
Phlebotomy. In this common procedure, a syringe needle punctures a vein, usually in the arm, and wit Phlebotomy. In this common procedure, a syringe needle punctures a vein, usually in the arm, and wit
Red Blood Cell Red Blood Cell
Blood Flow Blood Flow
The primary factors affecting blood pressure. The primary factors affecting blood pressure.
Direct thumb pressure along the tibialis anterior. Start at proximal end, moving about 1 inch at a ... Direct thumb pressure along the tibialis anterior. Start at proximal end, moving about 1 inch at a ...
Video: Secretin (inhibiting gastric acid secretion), Cholecystokinin (fat digestion) & Cholecystokinin

For a complete list of videos, visit our video library