Which vaccine is now recommended for the immunization of all newborns?

The correct answers are choices A, B, and D.

Choice A rationale:

Decreased urinary output can be a sign of heart failure, especially in infants. In heart failure, the heart's ability to pump effectively can lead to decreased blood flow to the kidneys, resulting in decreased urine production.

Choice B rationale:

Sweating (inappropriate) is a symptom of heart failure in infants. Infants with heart failure might sweat excessively, especially while feeding or crying, due to the effort required by the heart to pump blood effectively.

Choice C rationale:

Warm flushed extremities are not typically associated with heart failure in infants. In heart failure, extremities might actually become cool and pale due to poor circulation.

Choice D rationale:

Anorexia, or a lack of appetite, is a common sign in infants with heart failure. The increased effort required for feeding due to compromised cardiac function can lead to poor feeding and decreased appetite.

Choice E rationale:

Weight loss can occur in infants with heart failure due to inadequate caloric intake, difficulty with feeding, and increased metabolic demands associated with heart failure. However, it's not as specific a sign as decreased urinary output, sweating, and anorexia.

The correct answer is choice C. Decreased oxygen-carrying capacity of blood.

Choice A rationale:

Anemia does not primarily result in a depressed hematopoietic system. In fact, anemia often occurs due to various factors that affect red blood cell production or lifespan. The hematopoietic system can be overactive in response to anemia, attempting to compensate for the reduced oxygen-carrying capacity of the blood.

Choice B rationale:

While some anemias may involve the presence of abnormal hemoglobin (e.g., sickle cell anemia), this is not the primary result of anemia. The primary consequence of anemia is a decreased ability of the blood to carry oxygen to the body's tissues.

Choice C rationale:

The correct choice. Anemia leads to a decreased oxygen-carrying capacity of the blood. Hemoglobin, the protein in red blood cells responsible for carrying oxygen, is reduced in quantity or function in various types of anemia. This results in inadequate oxygen delivery to tissues, potentially causing symptoms such as fatigue, weakness, pallor, and shortness of breath.

Choice D rationale:

Increased blood viscosity is not a primary result of anemia. Anemia tends to reduce blood viscosity because there are fewer red blood cells and less hemoglobin present, which makes the blood more fluid and less viscous. Increased blood viscosity is more commonly associated with conditions like polycythemia, where there is an excess of red blood cells.