Free NLN Practice Test

Vocabulary in Context: Choose the word that best defines the bold term in the clinical sentence: "Because the patient’s initial endocrine symptoms were so **insidious**, the metabolic disorder progressed subtly for several months before routine laboratory screenings detected abnormal hormone concentrations." Which definition best matches the meaning of "insidious" as used here?

Reading Comprehension (Passage 1): "During acute systemic inflammation, vascular endothelial cells upregulate adhesion molecules (such as selectins and integrins) in response to proinflammatory cytokines including tumor necrosis factor-alpha (TNF-α) and interleukin-1 (IL-1). This biochemical signaling cascade prompts circulating neutrophils to marginate, roll along the capillary wall, and undergo diapedesis into surrounding infected tissue. While this acute response is essential for pathogen neutralization and tissue debridement, dysregulated or protracted cytokine release can precipitate widespread endothelial permeability, intravascular coagulopathy, and end-organ hypoperfusion." Based on this passage, what is the author’s primary purpose in describing the neutrophil recruitment cascade?

Reading Comprehension (Passage 2): "Therapeutic communication in clinical nursing requires a deliberate balance of active listening, empathetic silence, and cognitive reframing. When patients receive distressing prognostic information, emotional shock frequently impairs their cognitive processing capacity. Clinicians who overwhelm patients with dense pharmacological jargon during this acute phase risk exacerbating patient apprehension and fostering therapeutic non-adherence. Conversely, validating patient emotion before delivering incremental, plain-language instruction fosters psychological safety, empowers shared decision-making, and significantly improves long-term treatment concordance." According to the passage, why is using dense pharmacological terminology immediately after delivering a difficult prognosis counterproductive?

Mathematics (Fractions & Percentages): A pediatric fluid prescription orders 450 mL of 0.45% normal saline to be infused over a 6-hour period. If the patient has already received 3/5 of the total prescribed volume: 1. How many milliliters of saline remain to be infused? 2. What percentage of the initial volume remains?

Mathematics (Algebra): Solve the following linear algebraic equation for x, which represents an unknown clinical dosing factor: 3(2x - 5) + 4 = 4x + 15 What is the value of x?

Mathematics (Data Interpretation from Chart): A nurse reviews the 24-hour intake and output (I&O) record for a postoperative surgical patient across four consecutive 6-hour shifts: • Shift 1 (00:00–06:00): Fluid Intake = 650 mL | Fluid Output (Urine + Drain) = 500 mL • Shift 2 (06:00–12:00): Fluid Intake = 850 mL | Fluid Output (Urine + Drain) = 600 mL • Shift 3 (12:00–18:00): Fluid Intake = 500 mL | Fluid Output (Urine + Drain) = 750 mL • Shift 4 (18:00–24:00): Fluid Intake = 400 mL | Fluid Output (Urine + Drain) = 350 mL What is the patient's net 24-hour fluid balance, and during which shift did the patient experience a negative fluid balance (output exceeding intake)?

Science (Biology / Human Anatomy): In the human nephron, which physiological mechanism is primarily responsible for the passive reabsorption of water from tubular filtrate back into the renal medullary interstitium within the descending limb of the Loop of Henle?

Science (Chemistry & Physics Fundamentals): Human arterial blood pH is tightly regulated within the narrow physiological range of 7.35 to 7.45. Which chemical buffer system serves as the primary extracellular buffer to neutralize metabolic acids, and what physiological compensation occurs when blood carbon dioxide (CO2) concentrations rise?