Hemorrhoids Flashcards
Define External hemorrhoids
Originate and are located below the dentate line and can be painful especially if thrombosed
Note: not necessarily outside the anal canal but in most cases patients present with lumps around the anus caused by increased or repeated straining such as with severe cases of diarrhea or constipation or increased intra-abdominal pressure
Define hemorrhoids
common condition characterized by pruritus or burning, swelling, rectal bleeding and possibly pain
Define internal hemorrhoids and differentiate between the different grades of severity/degree of prolapse
Originate above the dentate line, most commonly causing painless bleeding with bowel movements
Grade 1: swelling of anal cushion often with straining and are usually painless, do not prolapse below dentate line
Grade 2: prolapse through the anus on straining but spontaneously return to normal position
Grade 3: remain in prolapsed position after straining and require manual replacement
Grade 4: chronically prolapsed, creating a permanent bulge and cannot be replaced after a bowel movement –> painful and bleeding is common, greater risk of thombosis and gangrene
What is the dentate line?
The point at which the squamous anoderm of the anus meets the columnar mucosa of the rectum and typically lies about 3 cm above the anal verge
Major anatomic reference point when classifying hemorrhoids
What is a hemorrhoid anatomically?
Cushions in the sub-epithelial space of the anal canal
What are the characteristics of internal hemorrhoids?
- covered by mucous membranes
- leads to deposition of mucous on perianal skin
- can prolapse through the anal canal
- impede the ability to seal the anus (soiling is common)
Why is the hemorrhoid grading system widely criticized?
Does not involve the patient or their perception of the ailment
What are the characteristics of external hemorrhoids?
- appearance of small soft skin folds or thicker, fleshier appendages
- somatic innervation that causes pain
- can be asymptomatic, itch/moisture/irritation/thrombus
What is the clinical presentation of hemorrhoids?
- rectal bleeding identified on toilet paper or bowl, NOT mixed with stool
- bleeding exacerbated with straining
- usually bright red in colour
- mucous deposition causing itching and burning
- fecal soiling
- pain with thromboses external hemorrhoid
Why is the colour of the blood important when someone presents with hemorrhoids?
Bright red is better as a distal source, dark red indicates proximal cause
What are risk factors for hemorrhoids?
- peaks at 45-65 years
- constipation; hard stool shears the anal cushons
- diarrhea
- prolonged sitting on toilet
- type of work
- physical exertion and weight lifting
- pregnancy due to constipation, venous stasis and hormonal factors
What are some things that are NOT risk factors for hemorrhoids?
- spicy food
- coffee
- alcohol
- participation in sports
- ethnic or socioeconomic groups
What causes pain from external hemorrhoids?
Thrombosis –> firm nodule that has blue or purple tinge and is visible and palpable at the anal orifice (may be non-tender or incredibly painful)
What are the points on assessing dietary history of someone presenting with hemorrhoids?
- inadequate intake of fiber containing foods or fluids is often found
- recent changes in diet or medications should be recorded
What are the red flag s/s that warrant referral?
- prolapse is manually replaced
- rectal bleeding associated with painful defacation
- blood is present in large amounts
- blood is dark in colour
- bleeding is recurrent
- patient is at high risk of colorectal cancer
- patient <12 years
- problems persist for more than 7 days
