Care of Patients with Urinary Problems

Chapter 69 Care of Patients with Urinary Problems




Learning Outcomes



Safe and Effective Care Environment



Health Promotion and Maintenance



Psychosocial Integrity



Physiological Integrity



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The urinary system consists of the ureters, bladder, and urethra. Their functions are to store the urine made by the kidney and eliminate it from the body. These actions do not contribute to the homeostatic purposes of urinary elimination. However, when problems in the urinary system interfere with the mechanics of moving urine out of the body, urinary elimination is inadequate and homeostasis of fluids, electrolytes, nitrogenous wastes, and blood pressure is disrupted.


Urinary problems affect the storage or elimination of urine. Both acute and chronic urinary problems are common and costly. More than 20 million people in the United States are treated annually for urinary tract infections, cystitis, kidney and ureter stones, or urinary incontinence (U.S. Renal Data Systems, 2010). Although life-threatening complications are rare with urinary problems, patients may have significant functional, physical, and psychosocial changes that reduce quality of life. Nursing interventions are directed toward prevention, detection, and management of urologic disorders.



Infectious Disorders


Infections of the urinary tract and kidneys are common, especially among women. Manifestations of urinary tract infection (UTI) account for more than 7 million health care visits and 1 million hospital admissions annually in the United States (U.S. Renal Data Systems, 2010). UTIs are the most common health care–acquired infection. Total direct and indirect costs for adult urinary tract infections are estimated at $1.6 billion each year (Centers for Disease Control and Prevention [CDC], 2009).


Urinary tract infections are described by their location in the tract. Acute infections in the urinary tract include urethritis (urethra), cystitis (bladder), and prostatitis (prostate gland). Acute pyelonephritis is a kidney infection. The site of infection is important to know because site, along with the specific type of bacteria present, determines treatment. Several risk factors are associated with occurrence of UTIs (Table 69-1).


TABLE 69-1 FACTORS CONTRIBUTING TO URINARY TRACT INFECTIONS

































FACTOR MECHANISM
Obstruction
Stones (calculi)
Vesicoureteral reflux
Diabetes mellitus
Characteristics of urine
Gender
Age
Sexual activity
Recent use of antibiotics


Cystitis



Pathophysiology


Cystitis is an inflammation of the bladder. It can be caused by irritation or, more commonly, by infection from bacteria, viruses, fungi, or parasites. Infectious cystitis is the most common of the UTIs. Noninfectious cystitis is caused by irritation from chemicals or radiation. Interstitial cystitis is an inflammatory disease that has no known cause.


Infectious agents, most commonly bacteria, move up the urinary tract from the external urethra to the bladder. Less common, spread of infection through the blood and lymph fluid can occur. Once bacteria enter the urinary tract, several factors influence the outcome (Table 69-2).


TABLE 69-2 IMPORTANT FACTORS INFLUENCING THE OUTCOME OF URINARY TRACT INFECTION





























FACILITATING ASPECTS PROTECTIVE ASPECTS
Anatomy
Females: Short length of the urethra and its proximity to the vagina and rectum facilitate colonization of coliform bacteria.  
Males: With age, the prostate enlarges and may obstruct the normal flow of urine, producing stasis. Males: Long length of the urethra and its distance from the rectum provide protection from colonization with coliform bacteria.
Physiology
Females: Pregnancy predisposes a woman to ureteral reflux and subsequent pyelonephritis; with age, the decline in estrogen facilitates colonization of Escherichia coli. In addition, vaginal atrophy can alter urethral competency.
Males: With age, prostatic secretions lose their antibacterial characteristics and predispose to bacterial proliferation in the urine.
Females: Well-estrogenized mucosa in the urethra and trigone may inhibit bacterial colonization and enhance urogenital blood flow.
Males: Normal prostatic secretions inhibit bacterial growth.
Both males and females: Mucin is produced by urothelial cells lining the bladder—this helps maintain mucosal integrity and prevent cellular damage; mucin may also prevent bacteria from adhering to urothelial cells.
Trauma
Females: Vaginal penetration with sexual intercourse may traumatize the urethra and bladder base, leading to postcoital (or “honeymoon”) cystitis; a vaginal diaphragm that is too large can place pressure on the urethra, causing trauma; vaginal childbirth can cause permanent damage to the urethra.
Males: Sexually transmitted diseases may cause urethral strictures that obstruct the flow of urine and predispose to urinary stasis.
Both males and females: Urethral instrumentation (e.g., catheterization) may disturb the urothelial surface and predispose to adherence of bacteria that would ordinarily not be pathogenic.
Females: Adequate lubrication, either natural or artificial, with intercourse may prevent any trauma.
Infectious Agent
Some organisms are better able to adhere to host cells and secrete substances that induce inflammation. A small inoculum (number of microorganisms introduced into the body) is more easily flushed away by the flow of urine.

The presence of bacteria in the urine is bacteriuria and can occur with any urologic infection. When bacteriuria is without symptoms of infection, it is called colonization. Colonization, asymptomatic bacteriuria, is more common in older adults. This problem does not appear to progress to acute infection or kidney impairment unless the patient has other pathologic problems, and then it requires treatment.



Etiology and Genetic Risk


UTIs, like other infections, are the result of interactions between a pathogen and the host. Usually, a high bacterial virulence (ability to invade and infect) is needed to overcome normal strong host resistance. However, a compromised host is more likely to become infected even with bacteria that have low virulence. Genetically, invading bacteria with special adhesions are more likely to cause ascending UTIs that start in the urethra or bladder and move up into the ureter and kidney. Patient-specific genetic factors such as blood type and ability to produce bladder surface biofilms that protect bacteria may influence the risk for UTI (Bowen & Hellstrom, 2007).


Infectious cystitis is most commonly caused by organisms from the intestinal tract. About 90% of UTIs are caused by Escherichia coli. Less common organisms include Staphylococcus saprophyticus, Klebsiella pneumoniae, and organisms from the Proteus and Enterobacter species (Bowen & Hellstrom, 2007).


In most cases, organisms first grow in the perineal area, then move into the urethra as a result of irritation, trauma, or catheterization of the urinary tract, and finally ascend to the bladder. Catheters are the most common factor placing patients at risk for UTIs in the hospital setting. Within 48 hours of catheter insertion, bacterial colonization begins. About 50% of patients with indwelling catheters become infected within 1 week of catheter insertion.


How a catheter-related infection occurs varies between genders. Bacteria from a woman’s perineal area are more likely to ascend to the bladder by moving along the outside of the catheter. In men, bacteria tend to gain access to the bladder from inside the lumen of the catheter. Any break in the closed urinary drainage system allows bacteria to move through the urinary tract. Best practices to reduce the risk for catheter contamination and catheter-related UTIs are listed in Chart 69-1.



Chart 69-1


Best Practice for Patient Safety & Quality Care


Minimizing Catheter-Related Infection




Application of antiseptic solutions or antibiotic ointments to the perineal area of catheterized patients has not been demonstrated to have any beneficial effect.


Data from Smith, J. (2003). Indwelling catheter management: From habit to evidence-based practice. Ostomy and Wound Management, 49(12), 34-45.


Organisms other than bacteria also can cause cystitis. Fungal infections, such as those caused by Candida, can occur during long-term antibiotic therapy, because antibiotics reduce normal protective flora. Patients who are severely immunosuppressed, are receiving corticosteroids or other immunosuppressive agents, or have diabetes mellitus or acquired immune deficiency syndrome (AIDS) are at higher risk for fungal UTIs.


Viral and parasitic infections are rare and usually are transferred to the urinary tract from an infection at another body site. For example, Trichomonas, a parasite found in the vagina, can also be found in the urine. Treatment of the vaginal infection (see Chapter 74) also resolves the UTI.


Noninfectious cystitis may result from chemical exposure, such as to drugs (e.g., cyclophosphamide [Cytoxan, Procytox image]), from radiation therapy, and from immunologic responses, as with systemic lupus erythematosus (SLE).


Interstitial cystitis is a rare, chronic inflammation of the bladder, urethra, and adjacent pelvic muscles that is not a result of infection. The condition affects women ten times more often than men, and the diagnosis is difficult to make. Manifestations are similar to those of infectious cystitis with voiding occurring as often as 60 times daily, more intense urgency preceding urination, and suprapubic or pelvic pain, sometimes radiating to the groin, vulva or rectum, that is relieved by voiding. Results from urinalysis and urine culture are negative for infection (Evans & Sant, 2007; Siegel et al., 2008).


Although cystitis is not life threatening, infectious cystitis can lead to life-threatening complications, including pyelonephritis and sepsis. Severe kidney damage is a rare complication unless the patient also has other predisposing factors, such as anatomic abnormalities, pregnancy, obstruction, reflux, calculi, or diabetes.


The spread of the infection from the urinary tract to the bloodstream is termed urosepsis and is more common among older adults (Kessenich, 2010). Sepsis from any source is a systemic infection that can lead to overwhelming organ failure, shock, and death. The most common cause of sepsis in the hospitalized patient is a UTI (CDC, 2009). Sepsis has a high mortality and prolongs hospital stays (see Chapter 39).




Health Promotion and Maintenance


Although cystitis is common, in many cases it is preventable. In the health care setting, reducing the use of indwelling urinary catheters is a major prevention strategy (Gray, 2010). When catheters must be used, strict attention to sterile technique during insertion can reduce the risk for UTIs as can consistent and adequate perineal and catheter care (see Chart 69-1).



Changes in fluid intake patterns, urinary elimination patterns, and hygiene patterns can help prevent or reduce cystitis in the general population. Teach all people to have a minimum fluid intake of 1.5 to 2.5 L daily unless fluid restriction is required for other health problems. Another strategy is to have sufficient fluid intake to cause 2 to 2.5 L of urine daily. Encourage people to drink more water rather than sugar-containing drinks. Teach people to avoid urinary stasis by urinating every 3 to 4 hours rather than waiting until the bladder is greatly distended. Encourage everyone either to shower daily or to wash the perineal and urethral areas daily with mild soap and a water rinse. Teach women to avoid the use of vaginal washes. Other hygiene measures that specifically reduce the risk for cystitis and other UTIs are listed in Chart 69-2.



Chart 69-2 Patient and Family Education


Preparing for Self-Management: Preventing a Urinary Tract Infection




Drink at least 2 to 3 L of sugarless fluid every day.


Be sure to get enough sleep, rest, and nutrition daily.


[For women] Clean your perineum (the area between your legs) from front to back.


[For women] Avoid using or wearing irritating substances, such as bubble bath, nylon underwear, and scented toilet tissue. Wear loose-fitting cotton underwear.


[For women] Empty your bladder before and after intercourse.


For both women and men, gently wash the perineal area before intercourse.


Avoid the use of scented or flavored lubricants.


If you experience burning when you urinate, if you have to urinate frequently, or if you find it difficult to begin urinating, notify your physician or other health care provider right away, especially if you have a chronic medical condition (e.g., diabetes) or are pregnant.


Empty your bladder as soon as you feel the urge to urinate.


Empty your bladder regularly (every 4 hours), even if you do not feel the urge to urinate.


You may try these home therapies:





To prevent recurrent infection:





Patient-Centered Collaborative Care



Assessment



Physical Assessment/Clinical Manifestations


Frequency, urgency, and dysuria are the common manifestations of a urinary tract infection (UTI), but other manifestations may be present (Chart 69-3). Urine may be cloudy, foul smelling, or blood tinged. Ask the patient about risk factors for UTI during the assessment (see Table 69-1). For noninfectious cystitis, the Pelvic Pain and Urgency/Frequency (PUF) Patient Symptom Scale can identify patients with interstitial cystitis.



Before performing the physical assessment, ask the patient to void so that the urine can be examined and the bladder emptied before palpation. Assess vital signs to help rule out sepsis. Inspect the lower abdomen, and palpate the urinary bladder. Distention after voiding indicates incomplete bladder emptying.


Using Standard Precautions, examine any lesions around the urethral meatus and vaginal opening. To help differentiate between a vaginal and a urinary tract infection, note whether there is any vaginal discharge (vaginal discharge and irritation are more indicative of vaginal infection). Women often report burning with urination when normal acidic urine touches labial tissues that are inflamed or ulcerated by vaginal infections or sexually transmitted diseases (STDs). Maintain privacy with drapes during the examination.


The prostate is palpated by digital rectal examination (DRE) for size, change in shape or consistency, and tenderness. The physician or advanced practice nurse performs the DRE.



Laboratory Assessment


Laboratory assessment for a UTI is a urinalysis with testing for leukocyte esterase and nitrate. The combination of a positive leukocyte esterase and nitrate is 68% to 88% sensitive in the diagnosis of a UTI (Bowen & Hellstrom, 2007). Although a urinalysis can include a microscopic count of bacteria, white blood cells (WBCs), and red blood cells (RBCs), this additional testing is more expensive, is time consuming, and may not improve diagnostic accuracy. The presence of more than 20 epithelial cells/high power field (hpf) suggests contamination. The presence of 100,000 colonies/mL or the presence of three or more WBCs (pyuria) with RBCs (hematuria) indicates infection.


A urinalysis is performed on a clean-catch midstream specimen. If the patient cannot produce a clean-catch specimen, you may need to obtain the specimen with a small-diameter (6 Fr) catheter. For a routine urinalysis, 10 mL of urine is needed; smaller quantities are sufficient for culture.


A urine culture confirms the type of organism and the number of colonies. Urine culture is expensive, and results take at least 48 hours. It is indicated when the UTI is complicated or does not respond to usual therapy or the diagnosis is uncertain. A UTI is confirmed when more than 105 colony-forming units are in the urine from any patient. In patients who also have symptoms of UTI, as few as 103 colony-forming units may allow the diagnosis to be made. The presence of many different types of organisms in low colony counts usually indicates that the specimen is contaminated. Sensitivity testing follows culture results when complicating factors are present (e.g., stones or recurrent infection), when the patient is older, or to ensure the appropriate antibiotics are prescribed.


Occasionally the serum WBC count may be elevated, with the differential WBC count showing a “left shift” (see Chapter 19). This shift indicates that the number of immature WBCs is increasing in response to the infection. As a result, the number of bands, or immature WBCs, is elevated. Left shift most often occurs with urosepsis and rarely occurs with uncomplicated cystitis, which is a local rather than a systemic infection.



Other Diagnostic Assessment


The diagnosis of cystitis is based on the history, physical examination, and laboratory data. If urinary retention and obstruction of urine outflow are suspected, urography, abdominal sonography, or computed tomography (CT) may be needed to locate the site of obstruction or the presence of calculi. Voiding cystourethrography (see Chapter 68) is needed when ureteral reflux is suspected.


Cystoscopy (see Chapter 68) may be performed when the patient has recurrent UTIs (more than three or four a year). A urine culture is performed first to ensure that no infection is present. If infection is present, the urine is sterilized with antibiotic therapy before the procedure to reduce the risk for sepsis. Cystoscopy identifies abnormalities that increase the risk for cystitis. Such abnormalities include bladder calculi, bladder diverticula, urethral strictures, foreign bodies (e.g., sutures from previous surgery), and trabeculation (an abnormal thickening of the bladder wall caused by urinary retention and obstruction). Retrograde pyelography, along with the cystoscopic examination, shows outlines and images of the drainage tract. Areas of obstruction or malformation and the presence of reflux are then identified early.


Cystoscopy is needed to accurately diagnose interstitial cystitis. A urinalysis usually shows WBCs and RBCs but no bacteria. Common findings in interstitial cystitis are a small-capacity bladder, the presence of Hunner’s ulcers (a type of bladder lesion), and small hemorrhages after bladder distention.



Interventions



Nonsurgical Management


The expected outcome is to maintain an optimal urinary elimination pattern. Nursing interventions for the management of cystitis focus on comfort and teaching about drug therapy, nutrition therapy, and prevention measures.



Drug Therapy

Drugs used to treat bacteriuria and promote patient comfort include urinary antiseptics or antibiotics, analgesics, and antispasmodics. Cure of a UTI depends on the antibiotic levels achieved in the urine (Chart 69-4). Oral antifungal agents are usually prescribed for fungal infections. When oral antifungal therapy is not sufficient, amphotericin B is most often given in daily bladder instillations. Antispasmodic drugs decrease bladder spasm and promote complete bladder emptying.



Antibiotic therapy is used for bacterial UTIs (see Chart 69-4). Guidelines indicate that a 3-day, high-dose course of trimethoprim/sulfamethoxazole or a fluoroquinolone is effective in treating uncomplicated, community-acquired UTIs in women (Bowen & Hellstrom, 2007). Fluoroquinolones cannot be used to treat UTIs during pregnancy because of the potential for birth defects. The shorter courses increase adherence and reduce cost. Longer antibiotic treatment (7 to 21 days) and/or different agents are required for hospitalized patients; those with complicating factors, such as pregnancy, indwelling catheters, or stones; and those with diabetes or immunosuppression.




Long-term, low-dose antibiotic therapy is used for chronic, recurring infections caused by structural abnormalities or stones. Trimethoprim 100 mg daily may be used for long-term management of the older patient with frequent UTIs. For women who have recurrent UTIs after intercourse, one low-dose tablet of trimethoprim (TMP) (Proloprim, Trimpex) or TMP/sulfamethoxazole (half or single-strength Bactrim, Cotrim, Septra) or nitrofurantoin (Macrodantin, Nephronex image, Novofuran image) after intercourse is often prescribed. Estrogen used as an intravaginal cream may prevent recurrent UTIs in the postmenopausal woman, although this therapy is controversial.







Community-Based Care


Assess the patient’s level of understanding of the problem. His or her knowledge about factors that promote the development of cystitis determines the teaching interventions planned.


Teach the patient how to take prescribed drugs. Stress the need for correct spacing of doses throughout the day and the need to complete all of the prescribed drugs. If the drug will change the color of the urine, as it does with phenazopyridine (Pyridium, Urogesic, Phenazo image), inform the patient to expect this change. Offer techniques for remembering the drug schedule, such as the use of a daily calendar or the association of drugs with usual activities (e.g., mealtimes).


Patients may associate symptoms of discomfort with sexual activities and have feelings of guilt and embarrassment. Open and sensitive discussions with a woman who has recurrences of UTI after sexual intercourse can help her find techniques to handle the problem (see Chart 69-2). Explore with her the factors that contribute to her infections, such as sexual penetration when the bladder is full, diaphragm use, and her general resistance to infection. Some positions during intercourse may reduce urethral irritation and subsequent cystitis. Remind the patient that although perineal washing before intercourse is helpful, vigorous cleaning of the perineum with harsh soaps and vaginal douching may irritate the perineal tissues and increase the risk for UTI. At the patient’s request, discuss the problem with her and her partner to help them find ways of maintaining their intimate relationship.




Urethritis





Noninfectious Disorders




Urinary Incontinence



Pathophysiology


Continence is the control over the time and place of urination and is unique to humans and some domestic animals. It is a learned behavior in which a person can suppress the urge to urinate until a socially appropriate location is available (e.g., a toilet). Efficient bladder emptying (i.e., coordination between bladder contraction and urethral relaxation) is needed for continence.


Incontinence is an involuntary loss of urine severe enough to cause social or hygienic problems. It is not a normal consequence of aging or childbirth and often is a stigmatizing and an underreported health problem. Many people suffer in silence, are socially isolated, and may be unaware that treatment is available. In addition, the cost of incontinence can be enormous.


Continence occurs when pressure in the urethra is greater than pressure in the bladder. For normal voiding to occur, the urethra must relax and the bladder must contract with enough pressure and duration to empty completely. Voiding should occur in a smooth and coordinated manner under a person’s conscious control. Incontinence has several possible causes and can be either temporary or chronic (Table 69-3). Temporary causes usually do not involve a disorder of the urinary tract. The most common forms of adult urinary incontinence are stress incontinence, urge incontinence, overflow incontinence, functional incontinence, and a mixed form.



Stress incontinence is the most common type. Its main feature is the loss of small amounts of urine during coughing, sneezing, jogging, or lifting. In the continent person, the urethra can be relaxed and tightened under conscious control because skeletal muscles of the pelvic floor surround it. When a person feels the urge to urinate, the conscious contraction of the urethra can override a bladder contraction if the urethral contraction is strong enough.


Patients with stress incontinence cannot tighten the urethra enough to overcome the increased bladder pressure caused by contraction of the detrusor muscle. This is common after childbirth, when the pelvic muscles are stretched and weakened. The weakened pelvic floor allows the urethra to move during exertion. If the pelvic muscles are not strengthened, this condition continues. Low estrogen levels after menopause also contribute to stress incontinence. Vaginal, urethral, and pelvic floor muscles become thin and weak without estrogen.


Urge incontinence is the perception of an urgent need to urinate as a result of bladder contractions regardless of the volume of urine in the bladder. Normally when the bladder is full, contraction of the smooth muscle fibers of the bladder detrusor muscle signals the brain that it is time to urinate. Continent persons override that signal and relax the detrusor muscle for the time it takes to locate a toilet. Those who suffer from urge incontinence cannot suppress the signal and have a sudden strong urge to void and often leak large amounts of urine at this time. Urge incontinence is also known as an overactive bladder (OAB). Overactivity may have no known cause or may be the result of abnormal detrusor contractions related to other problems. Such problems include stroke and other neurologic problems, other urinary tract problems, and irritation from concentrated urine or artificial sweeteners, caffeine, alcohol, and citric intake. Drugs, such as diuretics, and nicotine can also irritate the bladder.


Mixed incontinence is the presence of more than one type of incontinence. Often urine loss is related to both stress and urge incontinence. The manifestations mimic more than one subtype. This category is more common in older women.


Overflow incontinence occurs when the detrusor muscle fails to contract and the bladder becomes overdistended. This type of incontinence (also known as reflex incontinence) occurs when the bladder has reached its maximum capacity and some urine must leak out to prevent bladder rupture. Causes for the underactive (acontractile) bladder may or may not be determined.


The urethra can be obstructed and fail to relax enough to allow urine flow. Incomplete bladder emptying or urinary retention from urethral obstruction results in overflow incontinence.


Functional incontinence is incontinence occurring as a result of factors other than the abnormal function of the bladder and urethra. A common factor is the loss of cognitive function in patients affected by dementia. To maintain continence, a person must be aware that urination needs to occur in a socially acceptable place. Patients with dementia may not have that awareness.



Etiology and Genetic Risk


Incontinence may have temporary or permanent causes. Evaluation of the incontinent patient means considering all possible causes, beginning with those that are temporary and correctable. Surgical and traumatic causes of urinary incontinence are related to procedures or surgery in the lower pelvic structures, areas that contain complex nerve pathways. Radical urologic, prostatic, and gynecologic procedures for treatment of pelvic cancers may result in urinary incontinence. Injury to segments S2 to S4 of the spinal cord may cause incontinence from impairment of normal nerve pathways.


Inappropriate bladder contraction may result from disorders of the brain and nervous system or from bladder irritation due to chronic infection, stones, chemotherapy, or radiation therapy. Failure of bladder contraction occurs with neuropathy of diabetes mellitus and syphilis.



Considerations for Older Adults


Many factors contribute to urinary incontinence in older adults (Chart 69-5). An older person may have decreased mobility from many causes. In inpatient settings, mobility is limited when the older patient is restrained or placed on bedrest. Vision and hearing impairments may also prevent the patient from locating a call light to notify the nurse or assistive personnel of the need to void. Assess for these factors, and minimize them to prevent urinary incontinence. Getting out of bed to urinate is a common cause of falls among older adults.



Chart 69-5 Nursing Focus on the Older Adult: Factors Contributing to Urinary Incontinence*







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Jul 18, 2016 | Posted by in NURSING | Comments Off on Care of Patients with Urinary Problems

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