NP 614 Test 4 - Sheet1 Flashcards
Benigh prostatic hyperplasia
A nonmalignant adenomatous overgrowth of the periurethral prostate gland.
Prevalence of benign prostatic hyperplasia (BPH)
Men aged 55-74 without prostate cancer (19%)
Urinary flow criteria for BPH
Voiding a max flow rate of 50 ml
International Prostate Symptom Score (IPSS)
A survey developed by the American Urological Association to determine how bothersome BPH symptoms are and to check the effectiveness of treatment. Scores >10 are abnormal.
Digital rectal exam
An integral part of the evaluation of a man with urinary complaints and is not necessarily recommended as a screening test in asymptomatic men <40
Prostate characteristics in BPH
Usually symmetrically enlarged
How to palpate nodules or induration (hardness) of the prostate that may indicate cancer
Press firmly into the substance of the prostate
Assessment of post-void residual
Transabdominal ultrasound has replaced cath assessment
Visualization of prostate
Can not be visualized transabdominally via ultrasound. Must be completed via transrectal sonography.
Tests to detect urinary obstruction
Cystoscopy may be helpful, but has been replaced by urodynamic studies
Herb saw palmetto
Herb used to self-treat BPH. Lowers PSA numbers (as does Proscar) and may mask early detection of prostate cancer.
Concern with herb saw palmetto
May be being used by high-risk men and is self-prescribed. May not share this info with their provider who is interpreting their PSA.
Classifications of inflammatory or irritative conditions of the prostate
Acute prostatitis. Chronic bacterial prostatitis. Chronic prostatitis/pelvic pain syndrome, inflammatory. Chronic prostatitis/pelvic pain, noninflammatory. Asymptomatic inflammatory prostatitis
Chronic prostatitis
Can occur as a result of acute prostatitis or without any recognized initial infection and is more subtal than the acute form
Most common cause of UTI in men
Gram-negative rods with E. coli causing 75-80% of cases
Presentation of chronic prostatitis
Complaints of lower UTI and a low-grade fever. Sexual dysfunction may be present. Rectal exam - tenderness, hypertrophy and edema of prostate, though it is often normal.
Diagnosis of chronic prostatitis
Analyzing specimens obtained following prostatic massage for leukocytes adn bacteria. Called the so-called four-glass test.
So-called four-glass test
Massage of the prostate allows for analyzing of specimens. Not often used and does not support determination of pts that require antibiotics.
Treatment of chronic prostatitis
4-week course of fluoroquinolone (cipro 500 every 12 hr or levofloxacin 500 daily)
Relapse of chronic prostatitis
Common and should be treated with a second course of antibiotics. May use cipro again. Bactrim is an alternative.
Prostate massage and acute prostatitis
Be cafeful because no sense in massaging bacteria into the system. Let it go and just treat.
Tenative diagnosis of 25 yo male reports dysuria, frequency and lower abd pain x 1 day, temp of 100.4. Tender, boddy prostate on exam
Acute bacterial prostatitis
PSA result that is consistent with prostate cancer
A doubling of PSA value in serial annual tests
Pt is taking finasteride (Proscar) and asks if he can take terazosin (Hytrin). You would advise…
The the patient that those medications are absolutely contraindicated together
What medical condition increases the risk of ED, which affects 18-30 million men in the U.S.
Type II diabetes
Which medications can cause erectile dysfunction?
Antihypertensive, antipsychotic, and anticholinergic
Can a patient who is taking isosorbide mononitrate tale sildenafil (Viagra)?
No. Viagra is contraindicated with isisorbide mononitrate; let’s discuss other option
The most common cause of end-stage renal disease in the U.S.
Diabetic nephropathy
What is a normal GFR
120-130 ml/min
Colitis and Chron’s are diagnosed by
Intestinal biospy
The results of nightly mescalamine enemas and 5-ASA tabs daily for a patient with ulcerative colitis
Reduce flares, decrease chance of colorectal cancer, decrease relapses, induce and maintain remission
Definition of ED
The inability to achieve or sustain an erection sufficient for sexual intercourse, on >50% of attempts, for at least 3 months, and that this interferes with the man’s life/roles. 75% of cases have an organic cause
Common causes of ED
Long term cigarette smoking, low testosterone or high prolactin levels, vascular disease (arteriosclerosis of the pelvic muscles and macrovascular disease of diabetes), brain or spinal cord injury, peripheral neuropathy including diabetic neuropathy, heavy metal exposure, alcoholism, vitamin B12 or B6 deficiency, amyloidosis and uremia, pelvic trauma or surgery (especially prostate surgery), and depression. More than 50% of men with diabetes are impotent..
Medications that cause erectile dysfunction
Digoxin. Meds that end in “ine” or “ide”. Antidepressants, especially SSRIs slow sexual response and antihypertensive meds. Antihistamines. Over 200 meds!
Success for couples in which one suffers from erectile dysfunction
Involve the partner and help couples be comfortable with therapy and proper use.
Consultation or referral for patients with erectile dysfunction
Long-standing ED, those not responding to prescribed therapy, patients needing diagnostic tests or selecting treatment that is beyong the scope of NP practice, those with complicated problems such as a history of childhood sexual abuse, and whenever you are unsure.
Phosphodiesterase inhibitors
Sildenafil (viagra) 25, 50, and 100 mg. Tadalafil (Cialis) 2.5,5,10, and 20 mg. Vardenafil (Levitra) 2.5, 5, 10, and 20 mg
How phosphodiesterase-5 (PDE-5) inhibitors work
When sexually arounsed, men release nitric oxide into the penis, which activates guanylate cyclase. Guanylate cyclase leads to increased levels of cGMP, which causes smooth muscle relaxation and increased blood flow. The inhibitors keep cGMP from being broken down so they stay longer, increasing its effects and helping to maintain an erection. They do not cause erection without sexual stimulation
Doses, onset, and duration of PDE-5 inhibitors
Viagra - 50 mg QD, 1 hr prior and lasts 2-4 hours. Cialis - 10mg QD, 30 min prior and lasts up to 36 hrs. Levitra - 10 mg QD 1 hr prior and lasts 5 hrs.
Nitrates and PDE5Is
Nitrates and alpha blockers should not be given together. PDE5Is lower BP and together can cause dangerously low BP. No nitrates within 24 hrs of sildenafil or vardenafil, or 48 hrs of tadalafil. Tamsulosin has less additive hypotensive effect.
PDE5Is and other drug interactions
Antifungals, statins, macrolide, antibiotics, protease inhibitors, and any cyp3A4 inducers or inhibitors. Do not take with grapefruit juice.
Medical conditions in which PDE5Is are contraindicated
Pt, who in the last 6 months, have had an MI, stroke, or life-threatening arrhythmia. These drugs affect circulation and BP
Common adverse effects of PDE5Is
Headache, heartburn, flushing, nasal congestion, changes in vision (color, glare), back pain (with cialis).
Symptoms which indicate pt should stop taking PDE5Is
Rash, painful erection, erection lasting >4 hrs (priapism), fainting (from low BP), chest pain, or itching/burning during urination (UTI).
NAION
Nonarteritic Anterior Ischemic Optic Neuropothy
NAION and PDE5Is
Blood flow to the optic nerve is blocked, causing a sudden loss of eyesight that may be temporary or permanent. Rarely interaction. Men more at risk >50, smokers, heart disease, DM, HTN, high cholesterol, glaucoma. If still needed, try Sildenafil is more selective and PDE5 and PDE6 is found in the eye.
Alprostadil - ED drug that can be injected or as a suppository
Cause local vasodilation and entrapment of blood in the corpus cavernosum; relaxes smooth muscle
Carverject and Edex
Injectable drugs for ED. 10mcg, 20mcg, and 40 mcg. Produces erection in 80% of men. After reconstitution, use within 24 hrs. Edex - injected along the shaft of the penis.
Muse
Penile suppository (1/2 the size of a grain of rice). 250 mcg, 500 mcg, and 1000 mcg. Produces erection in 30-40% of men. Can be left at room temp for 14 days.
Alprostadil (carverject, edex, and muse) onset, duration
Begins to work in 5-10 min. Intercouse should be attempted in 10-30 min. Erection lasts about 1 hr. Do not use >3x/wk or more than once every 24 hrs for injection and no more than twice daily with suppository. Injection must be initially titrated in office and pt must stay until full resolution of erection.
Cautions when using alprostadil drugs
Use condom and is pregnancy risk X. Suppository - bleeding, stinging, and pain in urethra. Injection - bleeding, pain, bruishing, painful erection, HTN/hypotension. Stop if curving, swelling, pain, erection longer than 4-6 hrs, dizziness, fainting, flu-like symptoms. May cause apnea within 1st hr of administration.
Drug interactions with alprostadil
HTN meds because can cause hypotension. Use caution when consuming ETOH. Do not give blood for 1 month after. Must follow-up every 3 months to ensure technique and dosage titration are adequate.
Causes of testosterone deficiency
Many things including injury, infection, loss of testicles, hemochromatosis, chemo or radiation, pituitary abnormality, medications (corticosteroids), stress, alcoholism, cirrhosis, genetic abnormalities (Klinefelter’s syndrome)
Treatment option of testosterone deficiency
IM injections, every 2-3 weeks; patch on body or scrotum; gel; mucoadhesive material put on teeth twice daily; oral tablets
Adverse reactions of testosterone replacement
Acne, edema, prostate enlargement, breast enlargement, aggravation of sleep apnea, decreased size of testes, changes in lipid panel, increased RBCs, infertility, and increased PSA
5 stages of chronic kidney disease
Stage I - GFR 90. Stage II - GFR 60-89. Stage III GFR 30-59. Stage IV GFR 15-29. Stage V GFR <15.
Recommendations for testing for chronic kidney disease
Calculation of GFR. Proteinuria. Microalbuminuria (particularly in diabetics), spot urine for albumin, creatining rations for those positive for microalbumin.
Prevention of kidney disease
Glucose control, BP control with wise medication choice, lipid control and smoking cessation.
Renal stenosis and ACE inhibitors
DO NOT USE
Serum creatinine
Crude indicator and in the elderly is unreliable. Creatinine produced by skeletal muscle and as muscle mass decreases creatinine production decreases. So, if rate of creatinine clearance is decreased secondary to renal disease but there is less creatinine produced a small change is significant.
24 hr creatinine clearance
Cumbersome, inconvenient. Must stay refrigerated. For elderly, incontinence is a problem.
Cockcroft-Gault formula for calculating GFR
Predicts renal function by estimating GFR using weight, sex, and serum creatinine. Ex - [(140 - age in years) x (wt in kg) x (.085 if female)] /72 x serum creatining
MDRD - Modified Diet in Renal Disease for estimating GFR
Developed after a rigorous study and usesthe inulin infusion clearance. Uses sex, age, ethnicity, serum creatinine (no weight). More accurate than the Crockcroft formula. Neither formula well studied in the elderly.
Elderly considerations of renal status
Age and weight are the most important factors. The two formulas cannot be used interchangeable for GFR. Must stick with one formula for each pt. The Crockcroft underestimates the GFR in frail elderly and for safety this may be the best one to use.
Albumin to creatinine ratio
Looking for protein in the urine again based on age, weight, sex. Normal ration - in general <0.025 (or 25 mg albumin to 1 gm creatinine)
Hallmark lab for determining kidney disease
Protein
Spot microalbumin
Thought to be a marker for CV disease (endothelial damage alone the vascular tree) as well as renal disease) and is easy to conduct in the office
Microalbumin
Detects abnormal amounts of protein in the urine that is below the detection capability of the urine dipstick which is sensitive at spills of 300-500 mg/day. It is positive if >30-300 mg/day which correlates well with the urine albumin: creatinine ratio.
What is inflammatory bowel disease
A chronic inflammatory condition of the GI tract that has periods of flare and remission. Includes Chron’s disease, ulcerative colitis, and indeterminate colitis (difficult to differentiate between Chron’s and ulcerative coitis)
Presentation of inflammatory bowel disease
Males and females equally effected. Generally during ages 15-35, but can present in older pts
Genetic predisposition to IBS
First-degree relative puts one at a 3-20x greater likelyhood. Infection - maybe specific pathogens trigger this abnormal inflammatory response. Smoking - + correlation to smoking and Chron’s, but - to ulcerative colitis. Other - oral contraception, app before age 20, nutritional deficiencies.
Presentation of IBD
Symptoms dictated by severity and location of disease.Can be difficult to diagnose if do not have classic symptoms.
Presentation of ulcerative colitis
Often have more rectal symptoms with urgency, tenesmus (dry-heaves of rectum), bloody-mucus diarrhea
Presentation of Chron’s disease
Small bowel - no diarrhea or blood, but constipation, fever, abd pain, weight loss, arthralgia, etc
Who to refer with IBS
Alteration of bowel habits (chronic diarrhea or constipation), hematochezia, unintentional weight loss, feve, abd pain, N/V
Diagnosis of IBS
Based on big pic. Colonscopy - gold standard and useful in differentiating between UC and Chron’s. CT or abd and pelvis to r/o obstruction, structuring, or abscess or fistula. Small bowel follow through. Stool studies - C. Diff, WBC, culture, O&P. CBC, BMP, sed rate, c-reactive protein.
Chron’s disease
Inflammatory condition that can involve the translumen of the entire GI tract. Can effect anywhere in the GI from mouth to anus. Most common small bowel. Usually skips areas of colon or small bowel. No cure!
Complications of Chron’s disease
Fistualizing disease, abscess, stenosis, abscess.
Ulcerative colitis
Inflammatory condition limited to mucosal layer of colon. Almost always involves rectum and extends proximal and is continuous. Cure is possible with surgery
Complications of ulcerative colitis
Profuse bleeding, fulminant colitis with toxic megacolon, rupture / perforation of bowel. Increased risk of colon cancer.
Location of Chron’s disease
Ileitis - inflammation limited to small bowel and often the terminal ileum. Colitis - inflammation limited to colon and usually patchy in presentation. Ileo-colitis - affects both small adn large bowel
Location of ulcerative colitis
Proctitis - limited inflammation the rectal area. Recto-sigmoid colitis. L sided colitis. Pancolitis
Trreatment of IBS
Aminosalicylates. Immunomodulators. Biologic therpay. Antibiotics. Corticosteroids.
Aminosalicylates and IBS
Sulfasalazine, mesalamine, olsalazine, and balsalazide. Often foundation of treatment. Comes in suppository, enema, and oral. Works as a topical med coating the colon reducing inflammation. Often takes weeks for med to help minimize or control symptoms.
Immunomodular therapy and IBS
Azathioprine, 6-Mercaptopurine, adn methotrexate. Treat mod-severe IBS. Often started if pr fails 5 ASA therapy, contraindication to 5 ASA, or if involves the small bowel. Suppresses immune systems. Need specific monitoring secondary risk of lymphoma, hepatic toxicity, severe bone marrow suppression
Biologic therapy and IBS
Remicade, Humira, Cimzia and treat Chron’s. Remicade only biologic agent to treat UC. Treats mod-severe disease. Pts have often failed immunomodulators or are steroid dependent.
Antibiotics and IBS
Flagyl and cipro are common
Corticosteroids and IBS
Prednisone and entocort. Used to get control of symptoms cause most therapies take weeks. Not recommended for maintenance. Entocort commonly used for small bowel disease.
History and IBS
Often the key. Clarify when started, # BM in 24 hrs. Night awakening for BM? Seeing blood or mucus in stool and how much? Abd pain, fever, chills, night sweats, weight loss, arthralgia, N/V. Recent antibiotics (3 months), camping, foreign travel, recent virus, food borne illness?
Physical exam and IBS
Focused exam very helpful in building big pic. Does pt look ill? Mouth, mucosa, lungs, heart, abd exam essential, skin turger. This is a systemic disease - eyes, skin, hypercoagulability, arthritis, perirectal disease.
Test indicators to determine renal status
Serum creatinine, 24-hr creatinine clearance, albumun to creatinine ratio, and spot microalbumin
Treatment of IBS
Antibiotics - flagyl. Maintenance - must take them. Steroids - prednisone for flares. May need to be hospitalized. Diet - bland avoiding dairy and high fiber and avoid caffeine and artificial sweeteners. Imodium or lomotil if no C-diff
Treatment for active inflammatory Chron’s disease
Glucocoticoids are the gold standard. Enternal nutrition is very effective and the treatment of choice in adults and children with malnutrition. IM Methotrexate is second-line and has slow onset.
Maintenance therapy for Chron’s disease
Thiopurines are first choice and are very beneficial in children.
Canasa
Used to treat active ulcerative colitis. Suppository and retian for 1-3 hrs. used for 3-6 weeks. Side effects dizziness, rectal pain, and mild hair loss. Caution in pts with kidney problems, pancreatitis, pregnancy, pericarditis. Will stain surfaces dark brown
Rowasa
Used to treat mild to moderate distal ulcerative colitis. Retain enema for 8 hrs. Side effects abd pain, headache, gas, nausea, pain on insertion, and mild hair loss. Caution in sulfite allergy. Possible acute intolerance syndrome
Asacol
Used to treat mild-mod active UC and for maintenance of remission. Released in terminal ileum. Side effects headache, abd pain, nausea, pharygitis. Caution in renal disfunction and allergy to ASA. Caution when nursing. Swallow tabs whole.
Lialda
Used for induction of remission in pts with active, mild-mod UC. Released in terminal ileum. Safety past 8 weeks not established.
Pentasa
Used for induction of remission and treatment of mild-mod active UC. Releases in stomach
Colazol
Used for mild-mod active UC in pt 5 and older. May be opened and sprinkled on applesauce.
Dipentum
Used for maintenance of remission of UC and those intolerant of sulfasalazine. Caution with coagulopathies and pregnancy.
Sulfasalazine
Used in treatment of mild-mod UC and as adjunct of severe UC. Side effects - anorexia, headache, N/V, GI distress, reversible oligospermia.
Corticosteroids
Used for induction and maintenance of UC and Crohn’s. Use is limited due to frequent and significant side effects
Cyclosprine A
Not indicated for UC. Response seen within 7 days
Infliximab
Used for reducing signs and symptoms, inducing and maintaining clinical remission and mucosal healing, and eleminating corticosteroid use in pt with mod-severe active UC who have had inadequate response to conventional therapy. Significant risk of infection
Thiopurines
Used for off-label reduction of steriod use in the maintenance of UC. Especially useful in cyclosporine induced remission.
Active fistulizing Crohn’s disease
Control of sepsis is primary goal. Antibiotics may aid in fistula drainage.
Conditions that often accompany BPH
Bladder outlet obstruction, lower UTIs, or a combo.Symptoms are either obstructive or irritative
Obstructive symptoms of BPH
Urinary hesitancy, decreased caliber and force of stream, and postvoid dribbling. Related to bladder outlet obstruction.
Irritative symptoms of BPH
Frequency, urgency, and nocturia and occur as result of decreased functioningal bladder capacity and instability or infection. Lower UTIs used to describe. Detrusor overactivity is a known cause of lower UTIs.
Evaluation of prostate
A digital rectal exam and a focused neurological exam assessing sacral nerve roots and evaluation of the anal sphincter tone. Assess for prostatic nodules or induration.
Diagnostics regarding prostate disorders
Urinalysis - UTI or hematuria. Creatinine level - renal function. PSA - if life expectancy more than 10 yrs
Symptoms of bladder outlet obstruction
Evaluate of bladder calculi, urethral stricture, cancer of prostate, and bladder neck contracture. Consider bladder CA. Exclude UTI.
When to consider prostate CA
When there is an asymmetric enlargement, nodule, or induration is palpated on rectal exam.
Common sequalae of BPH
UTI and urinary retetion. Urinary retention can lead to renal problems.
When to refer to urologist for BPh
When surgical intervention is required. Indications for surgery - urinary retention; intractable symptoms related to obstruction; recurrent or persistent UTI; bleeding; changes in kidney or bladder; abnormally low urinary flow rate; bladder calculi.
Prostatitis and types
Inflammation of the prostate gland. Types - acute bacterial, chronic bacterial, nonbacterial, and prostatodynia.
Most common type of prostatitis
Nonbacterial prostatitis - no identifiable cause