When caring for a patient with heart failure, which concept about cardiac output should the nurse keep in mind?
A) A faster heart rate increases the cardiac output.
B) A slower heart rate increases cardiac output.
C) Preload is the volume of blood in the ventricle after contraction.
D) Afterload is the pressure of the heart during ventricular filling.
A) A faster heart rate increases the cardiac output.
Explanation: A) Cardiac output is determined by the heart rate and stroke volume. Faster heart rates typically increase CO, and slower heart rates typically decrease CO.
B) Cardiac output is determined by the heart rate and stroke volume. Faster heart rates typically increase CO, and slower heart rates typically decrease CO.
C) Preload is the amount of blood in the ventricle before contraction, at the end of diastole.
D) Afterload is the amount of pressure the heart needs to generate to pump blood out of the ventricle.
You might also like to view...
A nurse is aware that baclofen (Lioresal) is a centrally-acting spasmolytic that has been demonstrated to be safe and effective in the treatment of numerous disorders of muscle spasm and spasticity
The nurse should question the order if baclofen is prescribed for which of the following patients? A) A 22-year-old man whose muscle spasticity is attributable to a spinal cord injury that he suffered while snowboarding. B) A 49-year-old woman whose recent motor disturbances have culminated in a diagnosis of multiple sclerosis. C) A 14-year-old boy who has a diagnosis of cerebral palsy and who has experienced a recent increase in muscle spasticity. D) A 70-year-old man whose Parkinson disease has worsened in recent months, resulting in decreased mobility and self-care.
During the assessment of a patient after a high-speed motor vehicle crash, which of the following findings would increase the nurse's suspicion of a pulmonary contusion? (Select all that apply.)
a. Chest wall ecchymosis b. Diminished or absent breath sounds c. Pink-tinged or blood secretions d. Signs of hypoxia on room air
During your course you will learn ______.
a. only about your chosen field of nursing b. field-specific and generic knowledge and skills c. about your chosen field and one other field d. About the importance of caring for children
After implementing interventions and reassessing the client's response, the nurse completes the process by evaluating. What attributes of evaluation should the nurse include when completing this step of the nursing process?
1. Purposeful activity 2. Nursing accountability 3. Continuous 4. Judgments 5. Opinion