During a system downtime, a nurse is tasked with manually infusing 1000 mL of lactated Ringer's over 12 hours with an IV set that has a drop factor of 10 gtt/mL. How many drops per minute should be set?
20 gtt/min
12 gtt/min
21 gtt/min
14 gtt/min
The Correct Answer is D
A. 20 gtt/min: This rate would deliver approximately 1440 mL over 12 hours, which exceeds the prescribed 1000 mL volume. Such an infusion speed could lead to fluid volume overload and pulmonary edema in vulnerable patients. It does not align with the specific 1.39 mL per minute requirement.
B. 12 gtt/min: Utilizing this rate would result in a total volume of 864 mL over the 12-hour period. This represents a significant under-infusion of the prescribed Lactated Ringer's solution. It fails to meet the metabolic and hydration needs specified in the physician's medical order.
C. 21 gtt/min: This calculation results in an infusion of approximately 1512 mL, which is 50% higher than the 1000 mL goal. Delivering fluids at this accelerated pace increases the risk of electrolyte imbalances and cardiovascular strain. It is mathematically inconsistent with the provided drop factor and time.
D. 14 gtt/min: Calculated as (1000 mL multiplied by 10 gtt/mL) divided by 720 minutes, the result is 13.88. Rounding to the nearest whole number yields 14 drops per minute for accurate manual titration. This ensures the 1000 mL is delivered precisely over 12 hours.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
A. Promotion of traditional nursing values: Traditional values often center on historical practice and clinical intuition rather than standardized, systemic safety metrics. While these values are foundational to the profession, they do not specifically address the modern competencies required for high-reliability healthcare organizations. The QSEN project focuses on measurable skills and evidence-based methodologies.
B. Increasing the use of non-evidence-based interventions: This choice contradicts the core mission of quality education, which seeks to align clinical practice with current scientific research. Non-evidence-based interventions can introduce unnecessary risk and variability into patient care. The integration of quality education aims to eliminate such practices to improve patient outcomes.
C. Limiting collaboration: Effective healthcare delivery requires interprofessional communication and teamwork to prevent medical errors and coordinate complex care. Limiting collaboration would increase the risk of adverse events and fragmented treatment plans. Quality education emphasizes that safety is a collective responsibility involving all members of the multidisciplinary team.
D. Enhancing patient safety through quality improvement: The Quality and Safety Education for Nurses (QSEN) initiative provides a framework for developing competencies in areas such as informatics, evidence-based practice, and safety. By focusing on quality improvement, nurses learn to use data to monitor outcomes and design systemic changes. This approach minimizes harm and optimizes care delivery.
Correct Answer is C
Explanation
A. Enhanced respiratory muscle strength:Aging is characterized by sarcopenia, which involves the progressive atrophy of the diaphragm and intercostal muscles. This leads to a reduction in maximal inspiratory and expiratory pressures, making ventilation less efficient. Muscle strength typically declines rather than improves with advanced age.
B. Decreased vital capacity:As the thoracic cage becomes more rigid due to calcification of costal cartilages, the ability to fully expand the lungs diminishes. This structural change, combined with weakened musculature, reduces the maximum volume of air a person can exhale after a maximum inhalation. This is a standard finding in geriatric respiratory physiology.
C. Increased alveolar surface area:Senescence involves the breakdown of alveolar septa, resulting in fewer but larger air sacs, a process often termed senile emphysema. This reduces the total surface area available for gas exchange across the alveolar-capillary membrane. It impairs the efficiency of oxygen diffusion into the bloodstream.
D. Increased lung elasticity:Aging causes a loss of elastic recoil in the lung parenchyma due to changes in collagen and elastin fiber cross-linking. This loss of elasticity leads to early airway closure and increased residual volume. The lungs become more compliant but less able to recoil during expiration.
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