which of the following must be present in order for an infant with complete transposition of the great vessels to survive at birth?

Correct Answer: C

Rationale: In an infant with complete transposition of the great vessels, the survival at birth depends on the presence of a patent ductus arteriosus (PDA) to allow mixing of oxygenated and deoxygenated blood. In this condition, the aorta arises from the right ventricle and the pulmonary artery arises from the left ventricle, leading to separate circulatory pathways for oxygenated and deoxygenated blood. The survival of the infant is dependent on the remaining fetal shunts, such as a PDA, to maintain an adequate mixing of blood until corrective surgery can be performed. Therefore, the presence of a PDA is essential for the survival of an infant with complete transposition of the great vessels at birth.

Correct Answer: B

Rationale: Flaring of nares in a newborn is typically interpreted as a sign of respiratory distress. When a baby is having trouble breathing or is not getting enough oxygen, the body compensates by increasing the size of the nasal passages to allow for easier airflow. This response helps the baby to breathe more effectively during times of respiratory distress. It is important for healthcare providers to recognize this sign as it may indicate the need for prompt intervention and support to help the baby breathe more comfortably.

Correct Answer: B

Rationale: The term that best describes the identification of the distribution and causes of disease, injury, or illness is the epidemiologic process. Epidemiology is the study of the patterns, causes, and effects of health and disease conditions in populations. Through the epidemiologic process, health professionals can investigate and understand the distribution of diseases, determine risk factors, and develop strategies for prevention and control. Nursing process refers to the systematic method nurses use to provide patient-centered care. Community-based statistics are data collected from a specific community for various purposes. Mortality and morbidity statistics provide information on deaths and disease rates but do not encompass the comprehensive approach of the epidemiologic process in understanding the causes and distribution of diseases.

Correct Answer: B

Rationale: The presentation of perianal inflammation with satellite lesions that cross the inguinal folds is highly suggestive of a Candida albicans (yeast) diaper rash. Yeast diaper rash is characterized by redness, swollenness, and usually involves the skin folds. The warm, moist environment created by a diaper provides an ideal setting for Candida albicans to grow and cause a rash. The presence of satellite lesions that cross the inguinal folds further supports the diagnosis of a yeast infection rather than other causes like impetigo, irritation from urine and feces, or infrequent diapering. Treatment for yeast diaper rash typically involves antifungal creams or ointments.

Correct Answer: A

Rationale: Marasmus is a form of severe malnutrition characterized by a significant deficiency in calories and protein intake. Symptoms of marasmus include severe wasting of muscle and fat stores, giving the appearance of loose, wrinkled skin due to the loss of subcutaneous fat. Other symptoms may include lethargy, irritability, delayed growth and development, and weakened immune function. Edematous skin is more commonly associated with kwashiorkor, another form of severe malnutrition characterized by protein deficiency with adequate caloric intake. Depigmentation of the skin and dermatoses are not typical symptoms of marasmus.