Marked changes occur in the cardiopulmonary system at birth include which of the following? Note: Credit will be given only if all correct choices and no incorrect choices are selected. Select all that apply
1. Closure of the foramen ovale
2. Closure of the ductus venosus
3. Mean blood pressure of 31 to 61 mmHg in full-term resting newborns
4. Increased systemic vascular resistance and decreased pulmonary vascular resistance
5. Opening of the ductus arteriosus
1, 2, 4
Explanation: 1. Closure of the foramen ovale is a function of changing arterial pressures.
2. Closure of the ductus venosus is related to mechanical pressure changes that result from severing the cord, redistribution of blood, and cardiac output.
4. Increased systemic vascular resistance and decreased pulmonary vascular resistance; with the loss of the low-resistance placenta, systemic vascular resistance increases, resulting in greater systemic pressure. The combination of vasodilation and increased pulmonary blood flow decreases pulmonary vascular resistance.
You might also like to view...
The nurse patted the head of the child after examining her but noticed her parents did not look pleased. In which of the following cultures is touching the head impolite?
A) Asian American B) Native American C) Orthodox Jewish D) Anglo-American
What is a distinguishing trait of integrated leader-managers?
1 . They think short term. 2 . They look inward, toward the micromanagement of the organization. 3 . They influence others beyond their own group. 4 . They emphasize vision, values, and motivation. A) 1, 2 B) 2, 3 C) 1, 4 D) 3, 4
When teaching an individual for whom English is a second language, it is advisable to: a. have the individual's relatives listen to theinformation
b. have an interpreter present. c. have printed information in the individual'slanguage. d. b and c.
What should the postoperative assessment of E.B.'s residual limb dressing include?
What will be an ideal response?