Nocturia ~ Tyler Flashcards

1
Q

In regard to prostate cancer, the decision to treat is always based on….

A

In regard to prostate cancer, the decision to treat is always based on risk versus benefit. For instance, will they die of prostate cancer is we do not treat it, or will they likely die from something else?

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2
Q

Lower urinary tract symptoms (LUTS) suggestive of benign prostatic hyperplasia may include what symptoms?

A

Lower urinary tract symptoms (LUTS) suggestive of benign prostatic hyperplasia may include
• urinary frequency—urination eight or more times a day
• urinary urgency—the inability to delay urination
• trouble starting a urine stream
• a weak or an interrupted urine stream
• dribbling at the end of urination
• nocturia—frequent urination during periods of sleep
• urinary retention
• urinary incontinence- the accidental loss of urine
• pain after ejaculation or during urination
• urine that has an unusual color or smell

Symptoms of benign prostatic hyperplasia most often come from:
• a blocked urethra
• a bladder that is overworked from trying to pass urine through the blockage

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3
Q

What is usually the goal of therapy for BPH?

A

Symptomatic relief is the most common reason men seek treatment for BPH, and therefore symptomatic relief is usually the goal of therapy for BPH

Alpha-adrenergic receptor antagonists are thought to treat the dynamic aspect of BPH by reducing sympathetic tone of the bladder outlet, thereby decreasing resistance and improving urinary flow

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4
Q

What is now considered a second-line therapy for BPH?

A

Surgical therapy is now considered second-line therapy and is usually reserved for patients after a trial of medical therapy that has failed. The goal of surgical therapy is to reduce the size of the prostate, effectively reducing resistance to urine flow. Surgical approaches include TURP, transurethral incision, or removal of the gland via a retropubic, suprapubic, or perineal approach

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5
Q

Implementation of the following three guidelines will further improve PSA screening outcomes in the United States and will have a greater practical impact on men’s health than the USPSTF and AUA recommendations that are based almost solely on age.

A

First, avoid PSA tests in men with little to no gain. There is no rationale for recommending PSA screening in asymptomatic men with a short life expectancy. Hence, men aged >75 years should only be tested in special circumstances, such as higher than median PSAs measured before age 70 or excellent overall health.

Second, do not treat those who do not need treatment. High proportions of men with screen-detected prostate cancer do not need immediate treatment and can be managed by active surveillance. This brings in the phases of prostate cancer discussed above.

Third, refer men who do need treatment to a urologist. This allows for a multi-disciplinary approach to treatment and management involving close monitoring, patient education, and patient autonomy.

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6
Q

What are the three key points to remember about prostate cancer screening?

A

o DRE and PSA not recommended in routine screening.
o Determine the patient’s risk for BPH and prostate cancer before performing a PSA. DRE is likely not going to be a consideration except in high risk patients, and even then, it does not impact decision-making
o For men with a PSA of 4-7 ng/ml, refer to urology if their symptom score is likewise moderate to severe.

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7
Q

What are some differential diagnoses of cystitis?

A
o	Pyelonephritis
o	Urethritis
o	Vaginitis
o	Prostatitis
o	Asymptomatic bacteriuria (ASB)
o	Interstitial cystitis
o	Pelvic inflammatory disease (PID)
o	Urinary calculi
o	Radiation or chemical cystitis, e.g., cyclophosphamide
o	Bladder cancer
o	Urinary incontinence
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8
Q

What is the most important issue to be addressed when a UTI is suspected?

A

The most important issue to be addressed when a UTI is suspected is the characterization of the clinical syndrome as ASB, uncomplicated cystitis, pyelonephritis, prostatitis, or complicated UTI. This information will shape the diagnostic and therapeutic approach.

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9
Q

When can asymptomatic bacteriuria be diagnosed?

A

A diagnosis of ASB can be considered only when the patient does not have local or systemic symptoms referable to the urinary tract. The clinical presentation is usually bacteriuria detected incidentally when a patient undergoes a screening urine culture for a reason unrelated to the genitourinary tract. Systemic signs or symptoms such as fever, altered mental status, and leukocytosis in the setting of a positive urine culture are nonspecific and do not merit a diagnosis of symptomatic UTI unless other potential etiologies have been considered.

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10
Q

What are the typical symptoms of cystitis?

A

The typical symptoms of cystitis are dysuria, urinary frequency, and urgency. Nocturia, hesitancy, suprapubic discomfort, and gross hematuria can be noted as well. Unilateral back or flank pain is generally an indication that the upper urinary tract is involved. Fever also is an indication of invasive infection of either the kidney or the prostate. The fact many elderly patients lack the ability to mount a fever response introduces considerable ambiguity in diagnosis and treatment. That is why 95% of medicine is “gray” and not “black and white”.

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11
Q

How does mild pyelonephritis present as opposed to severe pyelonephritis?

A

Mild pyelonephritis can present as low-grade fever with or without lower-back or costovertebral-angle pain, whereas severe pyelonephritis can manifest as high fever, rigors, nausea, vomiting, and flank and/or loin pain. Symptoms are generally acute in onset, and symptoms of cystitis may not be present. Fever is the main feature distinguishing cystitis from pyelonephritis.

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12
Q

What is the main feature distinguishing cystitis from pyelonephritis?

A

Fever is the main feature distinguishing cystitis from pyelonephritis.

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13
Q

What type of fever can occur in those with pyelonephritis?

A

The fever of pyelonephritis typically exhibits a high spiking “picket-fence” pattern and resolves over 72 h of therapy. Bacteremia develops in 20–30% of cases of pyelonephritis.

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14
Q

What is emphysematous pyelonephritis?

A

Emphysematous pyelonephritis is a particularly severe form of the disease that is associated with the production of gas in renal and perinephric tissues and occurs almost exclusively in diabetic patients. This is often found through ultrasound evaluation when a retroperitoneal abscess, or other complication, is suspicioned in a patient with pyelonephritis.

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15
Q

What is xanthogranulomatous pyelonephritis?

A

Xanthogranulomatous pyelonephritis occurs when chronic urinary obstruction (often by staghorn calculi), together with chronic infection, leads to suppurative destruction of renal tissue. On pathologic examination, the residual renal tissue frequently has a yellow coloration, with infiltration by lipid-laden macrophages.

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16
Q

How does acute bacterial prostatitis present?

A

Acute bacterial prostatitis presents as dysuria, frequency, and pain in the prostatic pelvic or perineal area. Fever and chills are usually present, and symptoms of bladder outlet obstruction are common. Often, the patient complains of “pressure” or “pain” in the area between the scrotum and anus (perineal pain). It can manifest as difficulty sitting for extended periods.

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17
Q

How does chronic bacterial prostatitis present?

A

Chronic bacterial prostatitis presents more insidiously as recurrent episodes of cystitis, sometimes with associated pelvic and perineal pain. Men who present with recurrent cystitis should be evaluated for a prostatic focus as well as urinary retention.

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18
Q

What is a complicated UTI?

A

Complicated UTI presents as a symptomatic episode of cystitis or pyelonephritis in a man or woman with an anatomic predisposition to infection, with a foreign body in the urinary tract, or with factors predisposing to a delayed response to therapy.

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19
Q

How is nocturia related to HF?

A

Nocturia—Heart failure can lead to reduced renal perfusion during the day while the patient is upright, which normalizes only at night while the patient is supine, with consequent diuresis.

20
Q

What are the major sx of a renal stone?

A

• Essentials of Diagnosis
o Severe flank pain
o Nausea and vomiting
o Identification on non-contrast CT scan or ultrasonography

Symptoms and Signs
• Colicky pain in the flank, usually severe
• Nausea and vomiting
• Patients constantly moving—in sharp contrast to those with an acute abdomen
• Pain episodic and radiates anteriorly over the abdomen
• With stone in the ureter, pain may be referred into the ipsilateral groin
• With stone at the ureterovesical junction, marked urinary urgency and frequency; pain may radiate to the tip of the penis
• After the stone passes into the bladder, there typically is minimal pain with passage through the urethra
• Stone size does not correlate with severity of symptoms

21
Q

Most urinary stones conist of what?

A

• Most urinary stones contain calcium (85%) and are radiopaque; uric acid stones are radiolucent

22
Q

What causes hypercalciuric calcium nephrolithiasis?

A

• Hypercalciuric calcium nephrolithiasis (> 250 mg/24 h) can be caused by absorptive, resorptive, and renal disorders

23
Q

What causes hyperuricosuric calcium nephrolithiasis?

A

• Hyperuricosuric calcium nephrolithiasis is secondary to dietary excesses or uric acid metabolic defects

24
Q

What causes hyperoxaluric calcium nephrolithiasis?

A

Hyperoxaluric calcium nephrolithiasis is usually due to primary intestinal disorders, including chronic diarrhea, inflammatory bowel disease, or steatorrhea

25
Q

What causes hypocitraturic calcium nephrolithiasis?

A

Hypocitraturic calcium nephrolithiasis is secondary to disorders associated with metabolic acidosis including chronic diarrhea, type I (distal) renal tubular acidosis, and long-term hydrochlorothiazide treatment

26
Q

Contributing factors to uric acid calculi include…

A

• Uric acid calculi: Contributing factors include
o Low urinary pH
o Myeloproliferative disorders
o Malignancy with increased uric acid production
o Abrupt and dramatic weight loss
o Uricosuric medications

27
Q

What are struvite calculi?

A

• Struvite calculi (magnesium-ammonium-phosphate, “staghorn” calculi)
o Occur with recurrent urinary tract infections with urease-producing organisms, including Proteus, Pseudomonas, Providencia and, less commonly, Klebsiella, Staphylococcus, and Mycoplasma (but not Escherichia coli)
o Urine pH ≥ 7.2

28
Q

e. Persistent urinary pH < 5.5 is suggestive of what kind of stone?
f. Persistent urinary pH ≥ 7.2 is suggestive of what kind of stone?
g. Urinary pH between 5.5 and 6.8 typically indicates what kind of stone?

A

e. Persistent urinary pH < 5.5 is suggestive of uric acid or cystine stones
f. Persistent urinary pH ≥ 7.2 is suggestive of a struvite infection stone
g. Urinary pH between 5.5 and 6.8 typically indicates calcium-based stones

29
Q

• Imaging Studies
a. Plain film of the abdomen (KUB, kidney-ureter-bladder) and renal ultrasonography will detect most stones
b. Spiral CT is the most accurate imaging tool in evaluating flank pain given its increased sensitivity and specificity over other tests
c. However, ultrasound is a safe and effective alternative for evaluating renal colic devoid of ionizing radiation that can be used in the emergency department with good accuracy. Most ED clinicians are going to opt for the CT however.
d. All stones whether radiopaque or radiolucent on KUB are visible on non-contrast CT, (except the rare calculi due to indinavir therapy)
• Outcomes
a. Treatment
a. Variable depending on type of stone identified, thus the importance of stone analysis.
b. Prevention
a. Increased fluid intake to void 1.5–2.0 L/day to reduce stone recurrence
b. Patients are encouraged to ingest fluids during meals, 2 h after each meal, prior to going to sleep in the evening, and during the night
c. Reduce sodium intake
d. Reduce animal protein intake during individual meals

A

• Imaging Studies
a. Plain film of the abdomen (KUB, kidney-ureter-bladder) and renal ultrasonography will detect most stones
b. Spiral CT is the most accurate imaging tool in evaluating flank pain given its increased sensitivity and specificity over other tests
c. However, ultrasound is a safe and effective alternative for evaluating renal colic devoid of ionizing radiation that can be used in the emergency department with good accuracy. Most ED clinicians are going to opt for the CT however.
d. All stones whether radiopaque or radiolucent on KUB are visible on non-contrast CT, (except the rare calculi due to indinavir therapy)
• Outcomes
a. Treatment
a. Variable depending on type of stone identified, thus the importance of stone analysis.
b. Prevention
a. Increased fluid intake to void 1.5–2.0 L/day to reduce stone recurrence
b. Patients are encouraged to ingest fluids during meals, 2 h after each meal, prior to going to sleep in the evening, and during the night
c. Reduce sodium intake
d. Reduce animal protein intake during individual meals

30
Q

When is the right time to refer for a kidney stone?

A

When to Refer:
Evidence of urinary obstruction
Urinary stone with associated flank pain
Anatomic abnormalities or solitary kidney
Concomitant pyelonephritis or recurrent infection (usually requires invasive diagnostics like a cystoscopy)

31
Q

When is the right time to admit for a kidney stone?

A

When to Admit:
Intractable nausea/vomiting or pain in order to manage symptoms
Obstructing stone with signs of infection (relates to urology consult asap-a-rooney!)

32
Q

What are the causative agents of acute prostatitis?

A
•	Essentials of Diagnosis
o	Fever
o	Irritative voiding symptoms
o	Perineal or suprapubic pain
o	Exquisite tenderness on rectal examination
o	Positive urine culture

• General Considerations
o Usual causative organisms: Escherichia coli and Pseudomonas
o Less common: Enterococcus

•	Symptoms and Signs
o	Perineal, sacral, or suprapubic pain
o	Fever
o	Irritative voiding complaints
o	Obstructive symptoms
o	Urinary retention
o	Exquisitely tender prostate
33
Q

When is the right time to refer and when is the right time to admit for acute prostatitis?

A

• When to Refer
o Evidence of urinary retention
o Evidence of chronic prostatitis

• When to Admit
o Signs of sepsis
o Need for surgical drainage of bladder or prostatic abscess

34
Q

Relate diabetes mellitus and nocturia

A

Given the propensity for diabetic patients to have hyperglycemia, it is understandable that nocturia can occur as a result of elevated levels of glucose causing an osmotic diuresis which in turn potentiates the occurrence of nocturia. Patients commonly have occasions of polyuria, particularly with prolonged periods of hyperglycemia. Polyuria has several manifestations that not only include nocturia, but incontinence and urinary frequency.

35
Q

Relate diuretics and nocturia

A

Diuretics

This medications cause diuresis; therefore, patients will experience increased voiding. Most of the patients likely have edema states so much like the situation with volume redistribution that occurs in heart failure patients, lying down at night changes the venous pressure and allow for greater venous return which causes the kidneys to filter more fluid at night, thus creating nocturia.

36
Q

Define nocturia, dysuria, and urinary incontinence

A

Nocturia: Typically describes getting up to urinate (void) more than 2 times a night.
Dysuria: Difficulty urinating, occurring at more external locations like the urethra, bladder, and suprapubic area or as the urine exits the body.
Urinary Incontinence: inability to control the urine flow.

37
Q

Dysuria: Differential Considerations

A
  • Cystitis
  • Urethritis, eg, gonorrhea, chlamydia
  • Pyelonephritis
  • Vaginitis
  • Epididymitis
  • Balanitis
  • Prostatitis
  • Interstitial cystitis
  • Urethral syndrome
  • Genital herpes
  • Atrophic vaginitis
  • Reactive arthritis (Reiter’s syndrome)
38
Q

what is stress incontinence?

A

Stress incontinence: leakage of urine upon coughing, sneezing, or standing

39
Q

what is urge incontinence?

A

Urge incontinence: urgency and inability to delay urination

40
Q

what is overflow incontenence?

A

Overflow incontinence: variable presentation

41
Q

What are the transient causes of urinary incontinence?

A
  • Delirium (a common cause in hospitalized patients)
  • Infection (symptomatic urinary tract infection)
  • Atrophic urethritis and vaginitis
  • Pharmaceuticals
  • Potent diuretics
  • Anticholinergics
  • Psychotropics
  • Opioid analgesics
  • α-Blockers (in women)
  • α-Agonists (in men)
  • Calcium channel blockers
  • Psychological factors (severe depression with psychomotor retardation)
  • Excess urinary output caused by
  • Diuretics
  • Excess fluid intake
  • Metabolic abnormalities (eg, hyperglycemia, hypercalcemia, diabetes insipidus)
  • Peripheral edema and its associated nocturia
  • Restricted mobility (see Immobility in Elderly)
  • Stool impaction
42
Q

Established causes of urinary incontinence?

A

o Detrusor overactivity (urge incontinence)
• Uninhibited bladder contractions that cause leakage
• Most common cause of established geriatric incontinence, accounting for two-thirds of cases; usually idiopathic
• Detrusor hyperactivity with incomplete contractions (DHIC) is a subtype of urge incontinence that can present with urgency with incomplete bladder emptying

o Urethral incompetence (stress incontinence)
• Urethral obstruction
• Common in older men but rare in older women
• May be due to prostatic enlargement, urethral stricture, bladder neck contracture, or prostatic cancer in men
• Cystoceles or other anatomic problems can be causes in women

o Detrusor underactivity (overflow incontinence)
• Least common cause of incontinence
• May be idiopathic or due to sacral lower motor nerve dysfunction

43
Q

Symptoms and Signs of urinary incontinence?

A
o	Atrophic urethritis and vaginitis
•	Vaginal mucosal friability
•	Erosions
•	Telangiectasia
•	Petechiae
•	Erythema

o Detrusor overactivity (urge incontinence)
• Complaint of urinary leakage after the onset of an intense urge to urinate that cannot be forestalled
• A standing full bladder stress test (asking the patient to cough while standing) may result in a few second delay in release of urine

o Urethral incompetence (stress incontinence)
• Urinary loss occurs with laughing, coughing, or lifting heavy objects
• Most commonly seen in women but can be seen following prostatectomy in men
• A standing full bladder stress test (asking the patient to cough while standing) should result in immediate release of urine

o Urethral obstruction
• Common symptoms include dribbling, urge incontinence, and overflow incontinence
• Detrusor overactivity (which coexists in two-thirds of cases) may cause symptoms of urgency

o Detrusor underactivity (overflow incontinence)
• Urinary frequency, nocturia, and frequent leakage of small amounts
• An elevated postvoid residual (generally over 450 mL) distinguishes detrusor underactivity from detrusor overactivity and stress incontinence, but only urodynamic testing differentiates it from urethral obstruction in men

44
Q

How is stress incontinence tested for?

A

o To test for stress incontinence, have the patient relax her perineum and cough vigorously (a single cough) while standing with a full bladder
o Instantaneous leakage indicates stress incontinence if urinary retention has been excluded by postvoid residual determination using ultrasound
o A delay of several seconds or persistent leakage suggests the problem is caused by an uninhibited bladder contraction induced by coughing

45
Q

Because detrusor overactivity may be due to bladder stones or tumor, the abrupt onset of otherwise unexplained urge incontinence—especially if accompanied by perineal or suprapubic discomfort or sterile hematuria—should be investigated by cystoscopy and cytologic examination of the urine

A

Because detrusor overactivity may be due to bladder stones or tumor, the abrupt onset of otherwise unexplained urge incontinence—especially if accompanied by perineal or suprapubic discomfort or sterile hematuria—should be investigated by cystoscopy and cytologic examination of the urine