Grand theory that applied to practice and research

The following post has two questions;

1.Grand theory that applied to practice and research

Choose a middle-range theory or grand theory that, in your opinion, can be applied to research. What are the assumptions underpinning this theory? Discuss how this theory finds application in research. Choose a middle-range theory or grand theory that, in your opinion, can be applied to practice. What are the assumptions underpinning this theory? Discuss how this theory finds application in your area of practice.

2.Differences in the nursing management for hypovolemic shock, cardiogenic shock, and heart failure.

Shock is a clinical syndrome that is a result of inadequate tissue perfusion that creates imbalance between the delivery of and the requirements for oxygen that support cell health. Signs and symptoms of excess fluid volume or inadequate tissue perfusion characterize heart failure. Address the Following: Describe the differences in the nursing management for hypovolemic shock, cardiogenic shock, and heart failure. Because heart failure can be a chronic condition, identify a priority teaching intervention for the patient with a new diagnosis of heart failure.