Understanding Medical Surgical Nursing

Linda S. Williams, Paula D. Hopper

ISBN #9780803640689

5th Edition

441 Questions

3,135 Students Helped

Homework Questions

Summary

Learning Objectives

Key Concepts

Example Problems

Explanations

Common Mistakes

Summary

This chapter emphasizes the critical role of the urinary system in maintaining overall homeostasis through waste elimination, fluid and electrolyte regulation, and pH balance. It outlines nursing assessments that include monitoring intake and output, daily weights, and diagnostic testing to detect early renal complications. Additionally, the text highlights the importance of therapeutic measures and comprehensive patient education, especially for vulnerable populations such as older adults, to prevent further renal injury.

Learning Objectives

Describe the normal anatomy and physiology of the urinary system including the roles of the kidneys, ureters, bladder, and urethra.

Identify and explain the nursing assessments used to monitor fluid balance and detect early signs of renal complications.

Outline the diagnostic tests utilized for evaluating urinary system function and recognize their importance in patient care.

Explain therapeutic measures and patient education strategies aimed at preventing additional renal injury, especially in vulnerable populations.

Key Concepts

CONCEPT

DEFINITION

Urinary System

A system composed of the kidneys, ureters, bladder, and urethra that functions in waste elimination, fluid regulation, electrolyte balance, and maintenance of blood pH.

Kidneys

Paired organs responsible for filtering blood, removing waste, and regulating electrolyte and fluid balance.

Ureters

Narrow tubes that transport urine from the kidneys to the bladder.

Bladder

A muscular sac that stores urine until it is ready to be expelled from the body.

Urethra

A tube through which urine is excreted from the bladder to the outside of the body.

Fluid Balance

The maintenance of the proper amount of fluids in and around the cells of the body, critical for overall homeostasis.

Electrolyte Balance

The regulation of minerals in the body that are essential for various physiological processes including muscle contraction and nerve function.

Example Problems

Example 1

A home health nurse visits a patient who is 82 years ofd, uses a cane, and is not incontinent. Which of the following interventions should be included in the plan of care, based on an understanding of normal age-related changes of the urinary system, to promote patient safety? 1. Encourage fluids after 18: 00 . 2. Limit fluids to $1000 \mathrm{~mL}$ per day. 3. Provide a nightlight in the bathroom. 4. Provide adult briefs to absorb dribbling.

Example 2

The nurse is caring for a patient with acute kidney injury. Which of the following actions should the nurse take to obtain the most accurate assessment of fluid balance for the patient? 1. Document voiding pattern 2. Obtain daily weight 3. Review laboratory studies 4. Observe skin turgor

Example 3

The nurse is caring for a patient who is to have a urine culture and sensitivity done. Which of the following should be included in patient teaching for collecting a midstream clean-catch urine specimen for culture and sensitivity? 1. A second voided specimen is preferred. 2. A 24 -hour urine specimen is needed. 3. As soon as the urine starts to flow, it should be collected in a sterile container. 4. Women should keep the labia separated while voiding.

Example 4

The nurse is caring for a patient who has had a pyelogram with IV contrast. Which of the following care should the nurse provide? Select all that apply. 1. Maintain nothing by mouth. 2. Encourage fluids. 3. Check gag reflex. 4. Measure urine output. 5. Position patient prone. 6. Maintain bed rest for 24 hours.

Example 5

A patient is experiencing stress incontinence with frequent involuntary loss of urine. Which of the following directions would be most appropriate when teaching the patient how to perform Kegel exercises? 1. "Tighten your rectum at frequent intervals throughout the day." 2. "Keep your abdominal muscles tightened; do this every time you stand up." 3. "Do at least 20 sit-ups per day." 4. "When urinating, stop and start the stream of urine by tightening the perineal muscles."

Step-by-Step Explanations

QUESTION

How can a nurse effectively assess the urinary system to detect early signs of renal complications?

STEP-BY-STEP ANSWER:

Step 1: Review the patient’s medical history and any existing renal conditions to identify risk factors.
Step 2: Monitor the patient’s intake and output carefully; document the volume and frequency of fluids consumed and urine produced.
Step 3: Conduct daily weight measurements to assess fluid retention or loss, which may indicate imbalances.
Step 4: Observe for physical signs of fluid imbalance such as edema, skin turgor, and changes in blood pressure.
Step 5: Utilize diagnostic tests (such as urinalysis and blood tests) to further evaluate kidney function and electrolyte levels.
Final Answer: A combination of thorough monitoring, physical assessment, and diagnostic testing allows nurses to promptly detect and respond to early signs of renal complications.

Nursing Assessment of the Urinary System

QUESTION

How do diagnostic tests contribute to evaluating the functioning of the urinary system?

STEP-BY-STEP ANSWER:

Step 1: Begin with a detailed history and physical examination focusing on urinary symptoms.
Step 2: Order urinalysis to detect abnormalities such as protein, blood, or glucose in the urine.
Step 3: Utilize blood tests to check levels of waste products like creatinine and blood urea nitrogen (BUN) which indicate kidney function.
Step 4: Consider imaging studies, such as ultrasound or CT scans, to visualize the structure of the kidneys, ureters, and bladder.
Step 5: Analyze the results to determine any dysfunction or pathologic conditions that may require further treatment or intervention.
Final Answer: Diagnostic tests, ranging from laboratory tests to imaging studies, provide essential information that helps confirm the diagnosis and guide the appropriate care plan for urinary system abnormalities.

Diagnostic Tests for the Urinary System

Common Mistakes

Confusing the functions of the different parts of the urinary system, such as mistaking the roles of the kidneys and bladder.
Overlooking subtle signs of fluid imbalance, which can lead to late detection of renal complications.
Inadequate documentation of intake and output, limiting the effectiveness of early intervention strategies.
Neglecting patient education on monitoring their own symptoms, which may delay the recognition and treatment of urinary system issues.