Exam 3 - Middle of Study Guide Flashcards
Define constipation.
Decreased frequency of BM
ID S/Sx of chronic constipation.
Decreased frequency of BM for at least 12 weeks of last 6 mo; Diarrhea alternating with constipation, abdominal pain/discomfort, pain with defecation, presence of bright red blood, stool black/tarry
Causes of constipation.
Medications (anticholinergics; CCB; Fe suplements; Opiates), DM, Hypothyroidism, Hypercalcemia, MS, Parkinsonメs
Define obstipation.
severe constipation that prevents passage of both stools and gas
What are typical causes of obstipation?
indicates an intestinal obstruction, such as a Volvulus (twisted bowel)
Define IBS.
Functional change in frequency or form of bowel movement without known pathology; possibly from a change in intestinal bacteria.
ID S/Sx of IBS
3 patterns possible: Diarrhea predominant; constipation predominant; or mixed. Symptoms present for >6 mo and abdominal pain for >3 mo plus at least 2 of the following 3 features - 1)improvement w/ defecation; 2) onset with change in stool frequency; 3) onset with change in stool form and appearance
What are the two conditions associated with IBS?
Ulcerative colitis & Crohn’s disease
What is ulcerative colitis?
Inflammation of the mucosa and submucosa of the rectum and colon with ulceration; typically extends proximally from the rectum
S/Sx of ulcerative colitis.
Soft to watery stools containing blood; mild cramping; lower or generalized abdominal pain; anorexia; weakness; fever in severe attacks. May include episcleritis, uveitis, arthritis, erythema nodosum.
Persons at risk for ulcerative colitis.
Younger people. Increases risk of colon cancer.
What is Crohn’s disease?
Chronic transmural inflammation of the bowel wall, in a skip pattern typically involving the terminal ileum and/or proximal colon
S/Sx of Crohn’s disease.
Small, soft to loose or watery stools, usually with little or no blood; Crampy periumbilical, RLQ (SI), or diffuse (colon) pain, with anorexia, low fever and/or weight loss. Perianal or perirectal abscesses and fistulae; May cause small or large bowel obstruction.
Persons at risk for Crohn’s disease.
Often young people, beginning in late teens, but also in middle age. More common in Jewish descent. Increases risk of colon cancer.
ID three primary forms of mechanical obstruction.
1) cancer of rectum or sigmoid colon; 2) fecal impaction; 3) Other obstructive lesions (diverticulitis; volvulus; intussusception; hernia)
How does cancer cause a bowel obstruction?
Progressive narrowing of the bowel lumen from adenocarcinoma.
ID S/SX of a bowel obstruction related to cancer.
Change in bowel habits; often diarrhea, abdominal pain, bleeding, occult blood in stool. In rectal cancer, tenesmus and pencil-shaped stools. Weight loss.
How does fecal impaction cause a bowel obstruction?
A large, firm, immovable fecal mass, most often in the rectum
ID S/SX of a bowel obstruction related to fecal impaction.
Rectal fullness, abdominal pain, and diarrhea around the impaction; common in debilitated, bedridden, and often elderly patients
How do other causes (not cancer or fecal impaction) cause a bowel obstruction?
Narrowing or complete obstruction of the bowel.
ID S/SX of a bowel obstruction related to other causes (not cancer or fecal impaction).
Colicky abdominal pain, abdominal distension, and intussusception, often “current jelly” stools (red blood & mucus)
What are common causes of melena?
GI bleeding above the Ligament of Triaz; Gastritis, GERD, peptic ulcers; stress ulcers; Esophageal or gastric varices; Mallory-Weiss tear;
What are common causes of hematochezia?
GI bleeding below the Ligament of Triaz; Colon cancer; hyperplasia; adenomatous polyps; diverticula of colon; ulcerative colitis; Crohn’s; Infectious diarrhea; Proctitis; Ischemic colitis; hemorrhoids; anal fissure
Describe the anatomy of the rectum.
Balloons out above anorectal junction; turns posteriorly. Includes Valve of Houston.
Describe the anatomy of the anorectal junction.
Dentate line. Boundary between somatic and visceral nerve innervation; not readily palpable, but visible with proctoscope. Boundary between anal canal and rectum.
Describe the anatomy of the anus.
Includes internal and external anal sphincters.
What are the different positions for digital rectal exam (DRE)?
1) Sim’s position (on table in decubitus position with top leg flexed at hip); or 2) Standing position (hips flexed, leaning on table)
Steps of DRE
1) Gloves & lubricant; 2) Spread buttocks; 3) Inspect sacrococcygeal & perianal areas; 4) Pt bears down; 5) Inspect anus; 6) Explain urge to have BM or urinate is likely, but won’t happen; 7) Finger on anus; 8) Pt bears down & relaxes; 9) Finger in anal canal; 10) Insert finger slowly, pointing it toward umbilicus during insertion; 11) Palpate rectum by rotating 180 clockwise and counterclockwise; 12) Palpate prostate gland; 13) Palpate seminal vesicles and peritoneal cavity above prostate; 14) Pt bears down; 15) Check sphincter tone and remove finger slowly; 16) Give pt tissue to clear up; 17) Use occult stool card
What is a pilonidial cyst?
Congenital anomaly aggrevated by pressure of sitting; friction of walking; accumulation of sweat. Remember Prof. Williams story about sit-ups.
Where are pilonidial cysts located?
Midline, superficial to coccyx and lower sacrum
S/Sx of a pilonidial cyst.
Opening of a sinus tract; may have tuft of hair; surrounded by halo of erythema; often asymptomatic; slight drainage; prone to abscess formation and secondary sinus tract complication. When aggrevated, cyst may become inflamed, swollen, painful, filled with pus/blood, cause fever or malaise.
S/Sx of anorectal fistula
Inflammatory tract or tube that opens at one end into the rectum/anus and the other onto the skin surface or other viscus. Usually preceded by an abscess. Look for fistulous openings anywhere in skin around anus.
S/Sx of internal hemorrhoids.
Enlargements of the normal vascular cushions located above the pectinate line. Not usually palpable. May cause rectal bleeding (bright red blood), especially during defecation. Usually painless. May prolapse through the anal canal and appear as reddish, moist, protruding masses.
S/Sx of external hemorrhoids.
Dilated hemorrhoidal veins originating BELOW the pectinate line and covered with skin. Typically asymptomatic unless thrombosed. Thrombosed hemorrhoids cause acute local pain that increases with sitting and defecation. Tender, swollen, bluish, ovoid mass visible at anal margin. More likely to be painful than internal hemorrhoid.
S/Sx of hematochezia.
Bright red blood in stools, usually a result of GI bleed below the Ligament of Triaz. May be associated with a change in bowel habits, weight loss, diarrhea, rectal urgency, tenesmus, lower abdominal pain, fever, shock.
S/Sx of melena.
Black, tarry stools with occult blood. Variety of causes. May occur with heartburn, pain after meals, recent ingestion of alcohol, aspirin, or other anti-inflammatory drugs; recent abdominal trauma or surgery; increased ICP; cirrhosis; retching, vomiting
S/Sx of rectal prolapse.
Prolapse through anus of rectal mucosa +/- muscular wall; often as a result of straining for a BM. Doughnut or rosette of red tissue. When only mucosa involved, prolapse is relatively small & shows radiating folds. When entire bowel wall is involved, a larger prolapse occurs with concentrically circular folds
S/Sx of anal fissure.
Very painful oval ulceration of anal canal; most common in posterior midline; may have swollen “sentinel” skin tag below it. Gentle separation of anal margins may reveal lower dege of the fissure. Local anesthesia may be required because sphincter is spastic and exam is painful.
Abnormal findings of DRE indicative of colon polyps.
Common; variable size & #, soft, 2 types: Pedunculated (stalk) & sessile (lies on surface); Difficult to detect even when in reach; Proctoscopy & biopsy necessary
Abnormal findings of DRE indicative of rectal cancer.
Firm, nodular, rolled edge of an ulcerated cancer; Signs/Symptoms: Often asymptomatic; Rectal bleeding, change in bowel pattern/stool, weight loss.
Rectal cancer risk factors.
Inc. age, smoking, FH or personal hx of colon/rectal ca, diet high in fat, no screening.
Procedures that may be used in screening for rectal cancer.
Fecal occult blood test (FOBT), PE/DRE, Flex sig/Rigid sig/colonoscopy/ultrasound
At what age do the risks of colonoscopy outweigh the benefits?
75 yo
Abnormal findings of DRE indicative of prostate cancer.
Area of hardness on the prostate during rectal exam; enlarged tumor may feel irregular and may extend beyond confines of the gland. Median sulcus may be obscured.
Abnormal findings of DRE indicative of BPH.
Nonmalignant enlargement of prostate gland that increases with age; present in 50% of men over 50. May feel normal in size or may be symmetrically enlarged, smooth, and firm though slightly elastic.
Normal findings of DRE indicative of healthy prostate.
Rounded, heart-shaped structure approximately 2.5 cm long. Median sulcus felt at base between 2 lateral lobes.
S/Sx of BPH.
Increased urinary urgency, frequency, nocturia, decreased stream, retention; straining. REMEMBER - NUTS: Nocturia, Urine dribbles, tried to void but canメt, small stream
Prostate.
Gland contributing to seminal fluid. Surrounds urethra at neck of urinary bladder.
Testes
Contain interstitial tissue and seminiferous tubules; produces testosterone as a result of hypothalamus stimulation (GRH) of anterior pituitary (FSH & LH). FSH also regulates sperm production.
Scrotum
Loose, wrinkled pouch divided into two compartments, each containing one testis. Important in temperature regulation of testes. Covering testis within scrotum, except posteriorly, is serous membrane, tunica vaginalis which cloaks anterior 2/3 of testis and can accumulate fluid. On posterolateral surface of each testis is softer, comma-shaped epididymis.
Epididymis
Tightly coiled spermatic ducts that provide a reservoir for storage, maturation, and transport of sperm from testis to vas deferens.
Spermatic cord
Within scrotum, vas deferens is closely associated with blood vessels, nerves, and muscle fibers. These structures make up the spermatic cord.
Vas deferens
Cordlike structure that transports sperm from tail of epididymis along a somewhat circular route to the urethra during ejaculation. The vas ascends from the scrotal sac into the pelvic cavity through the external inguinal ring, then loops over the ureter to teh prostate behind the bladder. There it merges with the seminal vesicle to form the ejaculatory duct, which traverses the prostate and empties into the urethra. Secretions from the vas deferentia, seminal vesicles, and prostate all contribute to seminal fluid.
Penis
Shaft - 3 columns of vascular erectile tissue: 1) corpus spongiosum, containing urethra and forming bulb of penis ending in the glans, which has expanded base known as corona; 2 & 3) corpora cavernosa. Foreskin/prepuce covers glans in uncircumcised men, where smegma (secretions of glans) may collect. Urethra opens in external urethral meatus.
4 Types of Prostatitis
Acute bacterial prostatitis; chronic bacterial prostatitis; chronic nonbacterial prostatitis; asymptomatic inflammatory prostatitis
S/Sx of acute bacterial prostatitis
Fever, chills, dysuria, perineal & low back pain; +/- signs of sepsis; warm, tender, dilated prostate
Common ages for acute bacterial prostatitis
Men in 20’s
Causes of acute bacterial prostatitis.
80% from Gram (-) bacteria such as E. coli, Enterococcus, Proteus; May be secondary to chlamydia, gonorrhea, herpes, or syphilis in men in 20s and 30s.
S/Sx of chronic bacterial prostatitis
Recurrent infection of prostate; pain in perineal, low back, suprapubic, groin, and/or scrotal regions; dysuria, inc. freq., urgency, nocturia; pain on ejaculation; low libido; abd, testicular, epididymal, prostate, and/or DRE tenderness; normal sized or enlarged prostate
Causes of chronic bacterial prostatitis.
Most often E. coli
S/Sx of chronic nonbacterial prostatitis
Recurrent infection of prostate; pain in perineal, low back, suprapubic, groin, and/or scrotal regions; dysuria, inc. freq., urgency, nocturia; pain on ejaculation; low libido; abd, testicular, epididymal, prostate, and/or DRE tenderness; normal sized or enlarged prostate; pelvic pain often exaggerated by stress, diet, vigorous exercise
Causes of chronic nonbacterial prostatitis.
Unclear