NU155 Exam 1 Study Guide (2026) | 250+ Practice Questions & Verified Answers | Fluid & Electrolyte Balance, Renal Disorders, Acid-Base Balance & IV Therapy | Galen College of Nursing

repare for NU155 Exam 1 at Galen College of Nursing with this comprehensive 2026 study guide, featuring 250+ exam-style practice questions with verified answers and detailed rationales covering the essential principles of fluid and electrolyte balance, renal and urinary disorders, acid-base regulation, intravenous therapy, and renal assessment. Designed to help nursing students strengthen clinical reasoning, laboratory interpretation, patient assessment, and evidence-based nursing interventions, this study guide closely reflects the format and difficulty of NU155 examinations while reinforcing concepts commonly tested on nursing school exams and the NCLEX-RN. This study guide provides comprehensive coverage of fluid and electrolyte imbalances, including hyponatremia, hypernatremia, hypokalemia, hyperkalemia, hypocalcemia, hypercalcemia, hypomagnesemia, hypermagnesemia, phosphate disorders, osmolarity, extracellular and intracellular fluid compartments, dehydration, hypervolemia, hypovolemia, sodium and water regulation, aldosterone, antidiuretic hormone (ADH), atrial natriuretic peptide (ANP), electrolyte replacement therapy, calcium gluconate administration, and interpretation of normal laboratory values for sodium, potassium, calcium, magnesium, chloride, bicarbonate, blood urea nitrogen (BUN), creatinine, hemoglobin, hematocrit, red blood cells (RBCs), white blood cells (WBCs), platelets, PT, PTT, and INR. Every verified answer reinforces safe clinical practice, laboratory interpretation, and nursing judgment essential for examination success. The guide also delivers an in-depth review of renal and urinary disorders, including acute kidney injury (AKI), acute glomerulonephritis, acute pyelonephritis, cystitis, urinary tract infections (UTIs), renal calculi (kidney stones), nephron physiology, urinary incontinence, Kegel exercises, urinary assessment, renal biopsy preparation, nephrotoxic medications, renal function testing, urinary elimination, renal aging, chronic urinary complications, and evidence-based nursing care for patients with kidney disease. Additional topics include intravenous (IV) therapy and vascular access complications, such as infiltration, extravasation, phlebitis, thrombophlebitis, catheter embolus, venous spasm, circulatory overload, speed shock, IV site infection, nerve injury, medication administration safety, and patient education for IV therapies. The study guide also provides extensive coverage of acid-base balance, including respiratory acidosis, respiratory alkalosis, metabolic acidosis, metabolic alkalosis, arterial blood gas (ABG) interpretation, diabetic ketoacidosis (DKA), Kussmaul respirations, respiratory compensation, bicarbonate regulation, carbon dioxide balance, and pH interpretation, helping students develop the clinical reasoning skills required for safe nursing practice and examination success. This study guide is ideal for NU155 students, Galen College of Nursing students, Fundamentals of Nursing students, Medical-Surgical Nursing students, Practical Nursing (PN/LPN) students, Associate Degree Nursing (ADN) students, Bachelor of Science in Nursing (BSN) students, pre-nursing students, Registered Nursing (RN) students, and learners preparing for NCLEX-RN or NCLEX-PN examinations. The content aligns with leading nursing education resources and evidence-based clinical references, including: Lewis, S. L., Bucher, L., Heitkemper, M. M., Harding, M., Kwong, J., & Roberts, D. Lewis's Medical-Surgical Nursing: Assessment and Management of Clinical Problems. Elsevier. Hinkle, J. L., & Cheever, K. H. Brunner & Suddarth's Textbook of Medical-Surgical Nursing. Wolters Kluwer. Potter, P. A., Perry, A. G., Stockert, P. A., & Hall, A. Fundamentals of Nursing. Elsevier. Ignatavicius, D. D., Workman, M. L., & Rebar, C. R. Medical-Surgical Nursing: Concepts for Interprofessional Collaborative Care. Elsevier. Kidney Disease: Improving Global Outcomes (KDIGO). Clinical Practice Guidelines for Acute Kidney Injury and Chronic Kidney Disease. Infusion Nurses Society (INS). Infusion Therapy Standards of Practice. National Council of State Boards of Nursing (NCSBN). NCLEX-RN Test Plan. Relevant students: NU155 Students, Galen College of Nursing Students, Fundamentals of Nursing Students, Medical-Surgical Nursing Students, Practical Nursing (PN/LPN) Students, Associate Degree Nursing (ADN) Students, Bachelor of Science in Nursing (BSN) Students, Registered Nursing (RN) Students, Pre-Nursing Students, NCLEX-RN Candidates, NCLEX-PN Candidates, Allied Health Students. Keywords NU155, NU155 Exam 1, Galen College of Nursing, Fluid and Electrolyte Balance, Electrolytes, Hyponatremia, Hypernatremia, Hypokalemia, Hyperkalemia, Hypocalcemia, Hypercalcemia, Hypomagnesemia, Hypermagnesemia, Acid Base Balance, Metabolic Acidosis, Metabolic Alkalosis, Respiratory Acidosis, Respiratory Alkalosis, Arterial Blood Gas, ABG Interpretation, Renal Disorders, Acute Kidney Injury, AKI, Acute Glomerulonephritis, Acute Pyelonephritis, Cystitis, Urinary Tract Infection, UTI, Renal Calculi, Kidney Stones, Urinary Incontinence, Kegel Exercises, IV Therapy, IV Complications, Infiltration, Extravasation, Phlebitis, Thrombophlebitis, Circulatory Overload, Speed Shock, ADH, Aldosterone, ANP, BUN, Creatinine, Laboratory Values, Renal Assessment, Nursing Exam Questions, Verified Answers, Study Guide, NCLEX Review