A woman with severe preeclampsia is being treated with bed rest and intravenous magnesium sulfate. The drug classification of this medication is

Choice a) D5W intravenously is incorrect because this is not the preferred method of feeding for a hypoglycemic infant. D5W stands for dextrose 5% in water, which is a solution that contains glucose and water. It can be used to treat hypoglycemia by providing a source of energy and fluid to the infant. However, it has several disadvantages, such as requiring an invasive procedure, increasing the risk of infection, causing fluid overload or electrolyte imbalance, and stimulating insulin secretion, which can lead to rebound hypoglycemia. Therefore, D5W intravenously should be reserved for severe cases of hypoglycemia that do not respond to oral or enteral feeding.

Choice b) Formula via nasogastric tube is incorrect because this is not the first-line option of feeding for a hypoglycemic infant. Formula is an artificial substitute for breast milk that contains nutrients and calories to support the infant's growth and development. It can be given via nasogastric tube, which is a tube that passes through the nose and into the stomach, when the infant cannot suck or swallow effectively. However, formula has several disadvantages, such as being less digestible, less immunogenic, and less adaptable than breast milk, as well as increasing the risk of necrotizing enterocolitis, allergy, or infection. Therefore, formula via nasogastric tube should be used only when breast milk is unavailable or contraindicated.

Choice c) Breast milk is correct because this is the best and most recommended type of feeding for a hypoglycemic infant. Breast milk is the natural and optimal food for infants that contains all the nutrients and antibodies they need to grow and thrive. It can be given directly from the breast or expressed and fed by bottle or cup. Breast milk has several advantages, such as being easily digestible, enhancing immune function, promoting bonding, and adjusting to the infant's needs. Breast milk also contains lactose, which is a natural sugar that can raise the blood glucose level of the infant without causing a spike in insulin secretion. Therefore, breast milk should be offered to the hypoglycemic infant as soon as possible after birth and at regular intervals thereafter.

Choice d) Glucose water in a bottle is incorrect because this is not an appropriate type of feeding for a hypoglycemic infant. Glucose water is a solution that contains glucose and water. It can be given by bottle or cup to provide a quick source of energy to the infant. However, it has several disadvantages, such as providing no other nutrients or calories, interfering with breastfeeding, causing diarrhea or dehydration, and stimulating insulin secretion, which can lead to rebound hypoglycemia. Therefore, glucose water in a bottle should be avoided or used sparingly for mild cases of hypoglycemia that do not respond to breast milk.

Choice A) Newborns are abdominal breathers is incorrect because this is not a reason why the respiratory rate should be counted for a complete minute, but rather a characteristic of how newborns breathe. Abdominal breathing means that the diaphragm and the abdominal muscles are the main muscles used for breathing, rather than the chest muscles. Newborns are abdominal breathers because their chest wall is more compliant and less stable than adults, and their intercostal muscles are not fully developed. Abdominal breathing does not affect the accuracy or duration of measuring the respiratory rate, as long as the abdomen is visible and palpable. Therefore, this response is irrelevant and inaccurate.

Choice B) Activity will increase the respiratory rate is incorrect because this is not a reason why the respiratory rate should be counted for a complete minute, but rather a factor that can influence the respiratory rate. Activity means any physical or mental exertion that requires more oxygen and energy from the body. Activity can increase the respiratory rate, as well as the heart rate and blood pressure, to meet the increased oxygen demand and carbon dioxide removal. However, activity does not affect the accuracy or duration of measuring the respiratory rate, as long as the newborn is calm and resting during the measurement. Therefore, this response is irrelevant and inaccurate.

Choice C) The rate and rhythm of breath are irregular in newborns is correct because this is a reason why the respiratory rate should be counted for a complete minute. The rate and rhythm of breath refer to how fast and how regularly one breathes. Newborns have an irregular rate and rhythm of breath, which means that they breathe at different speeds and intervals, sometimes pausing for a few seconds between breaths. This is normal and harmless for newborns, as long as they do not stop breathing for more than 20 seconds or show signs of distress. However, it can make it difficult to measure the respiratory rate accurately, as counting for a shorter period may not reflect the true average rate. Therefore, counting for a complete minute can ensure a more reliable measurement. Therefore, this response is clear and accurate.

Choice D) Newborns do not expand their lungs fully with each respiration is incorrect because this is not a reason why the respiratory rate should be counted for a complete minute, but rather a feature of how newborns breathe.

Lung expansion means how much air one inhales and exhales with each breath. Newborns do not expand their lungs fully with each respiration, because they have smaller lung volumes and capacities than adults, and they breathe more shallowly and rapidly. However, lung expansion does not affect the accuracy or duration of measuring the respiratory rate, as long as the chest or abdomen movement is visible and palpable. Therefore, this response is irrelevant and inaccurate.