Pelvic Health Flashcards
Describe the detrusor muscle
- Wall of the bladder
- Smooth muscle
- At inferior end of bladder & is continuous with the internal urethral sphincter
- Pushes urine from bladder to urethra
What makes up the perineum
- Anterior urogenital triangle
- Posterior anal triangle
What makes up the anterior urogenital triangle
- Deep perineal pouch
- Perineal membrane
- Superficial perineal pouch
- Perineal fascia
What does the deep perineal pouch contain
- Urethra
- External urethral sphincter
- Vagina in females
What does the superficial perineal pouch contain
- Erectile tissues that form the penis & clitoris
- Ischiocavernosus muscle
- Bulbospongiosus muscle
- Superficial transverse perineal muscles
What is the perineal fascia
- Continuation of abdominal fascia
What is the perineal body
- Fibromuscular mass located at the junction of the urogenital & anal triangles
- Levator ani, bulbospongiosus, superficial/deep transverse perineal muscles, external anal sphincter, & external urethral sphincter muscle fibers
What makes up the posterior anal triangle
- Anal aperture: opening of the anus
- External anal sphincter muscle
- Ischioanal fossae (x2): allow expansion of the canal during defecation
- Pudendal nerve
The external sphincter is not affected by pelvic floor contraction however there is external compression of the urethra. (True/False)
- True
Describe a perineal examination
- When pt is asked to cough or Valsalva the perineum should show no downward movement; ventral movement may occur bc of the guarding actions of the pelvic floor muscles
Describe perineal elevation and descent
- Elevation: inward (cephalad) movement of the vulva, perineum, & anus (NORMAL)
- Descent: outward (caudal) movement of the vulva, perineum, & anus (ABNORMAL)
What can be observed on a rectal examination
- Anal sphincter tone/strength: assessment on digital exam, as good or poor in the absence of any quantitative assessment
- Anal sphincter tear: may be recognized as a clear “gap” in the anal sphincter on digital exam
- Confirm presence or absence of fecal impaction
- Anal lesions: hemorrhoids, fissures, rectovaginal fistula, or tumor
- Females: confirm presence or absence of rectocele & if possible, differentiate from anterocele; Dx perineal body deficiecy
Describe a vaginal examination
- Exam vaginal length (normal adult = 10-12cm) & mobility, presence of scarring and/or pain, & estrogenization (thickened, redundant, & pale pink appearance)
- Location of any vaginal pain should be noted
- Tenderness over the course of the pudendal nerve
Function of the core musculature on the pelvic floor
- Visceral support
- Sphincteric support (urethral meatus & anus)
- Sexual contracting muscles to respond to arousal & to enhance enjoyment
Pelvic floor muscle function can be qualitatively defined by
- Tone at rest & the strength of a voluntary or reflex contraction as strong, normal, weak or absent, or by a validated grading symptom
Define enterocele
- Like a hernia between the vagina and the rectum
Voluntary pelvic floor muscle contraction & relaxation may be assessed by
- Visual inspection
- Digital palpation (circumferentially)
- Electromyography
- Dynamometry
- Perineometry
- Ultrasound
Describe correct and incorrect action of pelvic floor muscle contraction
- Correct: pelvic floor lifts, the deep abdominals draw in & there is no change in breathing
- Incorrect: pulling the belly button in towards the backbone & holding your breath can cause bearing-down on pelvic floor
Modified Oxford Scale (MOS) grading scale
- 0 = no contraction
- 1 = flicker
- 2 = weak
- 3 = moderate (w/lift) increased intravaginal pressure with small cranial elevation of the vaginal wall
- 4 = good (w/lift) fingers compressed with elevation of the vaginal wall towards pubic synthesis
- 5 = strong (w/lift) firm compression of examiners fingers & fingers pulled further into vagina
What factors should be assessed for pelvic floor muscle function
- Muscle strength
- Voluntary muscle relaxation: absent, partial, complete
- Musculature endurance: ability to sustain maximal or near maximal force
- Repeatability: the # of times a contraction to maximal or near maximal force can be performed
- Duration
- Coordination
Describe a perineometer
- Provides a number based measurement
- Digital palpation necessary to note correct contraction
- May be used as form of biofeedback
Define normal pelvic floor muscles
- Pelvic floor muscles which can voluntarily & involuntarily contract and relax
Define overactive pelvic floor muscles
- Pelvic floor muscles which do not relax, or may even contract when relaxation is functionally needed, for example, during micturition or defecation
Define underachieve pelvic floor muscles
- Pelvic floor muscles which cannot voluntarily contract when this is appropriate