This document provides an overview of urinary elimination and catheterization. It begins with learning objectives on anatomy, physiology, urine composition and factors influencing urination. It then reviews kidney anatomy and function, as well as the ureters and bladder. Urine formation and characteristics are described. Types of urine specimens and diagnostic tests are listed. Methods of facilitating urine elimination like catheters are explained, including purposes, types, and procedures for insertion and care.
2. LEARNING OBJECTIVES
Review of anatomy and physiology
Composition and characteristics of urine.
Factors influencing Urination
Alteration in Urinary Elimination
Types and Collection of urine specimen, Observation, urine testing
Facilitating urine elimination: (assessment, types, equipment's,
procedures and special considerations)
Providing urinal/bed pan, Condom drainage.
Catheterization, Care of urinary drainage, and perineal care.
3. INTRODUCTION
Urinary elimination is defined as expulsion of waste products from
the body through the urinary system.
It is essential to maintain homeostasis of the body.
It helps in removal of metabolic waste products from the body.
4. Review of anatomy and physiology
Organs of urine elimination
Kidney:
Ureters
Urinary Bladder
Urethra
5. Kidney
Kidney: there are two kidneys present retroperitoneally in each side
It consists of two parts i.e Medulla and cortex.
Nephron is the Structural and functional unit of urinary system.
Blood supply is by Renal artery and venous blood
is drained to renal vein.
Renal pelvis is the point where renal artery enters
the kidney, and renal vein and ureters leave
the kidney.
6. Functions of kidney
1.Excratory function:
Excretion of metabolites.
drugs and
Toxins from the body.
2. Homeostatic function:
Maintenance of water balance.
Maintenance of electrolyte balance.
Maintenance of acid-base balance.
3. Endocrine (Hormonal) function.
Renin secretion by JG cells.
Secretion of Erythropoietin Hormone.
Secretion of prostaglandins.
4. The kidney converts Vitamin D3 active 1,25-dihydroxycholecalciferol.
7. Ureters:
There are two ureters descends from each kidney.
They are made-up of Smooth muscles and inner lining is by transitional
epithelium.
These ureters carries the urine from kidney to urinary Bladder.
Each ureters are around 10 to 12 (20 to 30cm) inch longer.
Upper half of the ureter located in Abdominal cavity and lower half is present in
Pelvic cavity.
Clinical significance
Ureteral stones
Reflux of Urine
Congenital malformation
Ca ureters
8. Urinary Bladder
It is a hallow muscular organ
present in pelvic cavity which store
the urine produced by kidney before
eliminating.
Superiorly connected to ureters
and inferiorly to Urethra.
Ca bladder, cystitis, incontinence,
retention and Spastic bladder are
the main clinical significance.
11. Composition of urine
95% of volume of normal urine is due to water.
Organic components
Urea (end product of protein metabolism)
Uric acid (end product of purines)
Creatinine
Amino acids
Metabolites of Hormones
In-organics
Cations: Na2+, K+, Ca2+ etc
Anions: Cl-, SO4
2-, HCO3
- etc
12. Characteristic of Urine
Physical characters
Color : pale yellow to deep Amber
Odor : odorless
Volume : 1 to 2 liters per 24 hours
Specific gravity : 1.003-1.032 (1.010)
Other characters
pH : 4.5 to 8.0 (6.8)
Blood cells : nil
Protein : nil
Glucose : nil
Ketone bodies : nil
13. Factors influencing urination
Lifestyle
Fluid and food intake
Environment
Psychological factor
Medications
Muscle tone and activity
Pathological condition
Surgical and diagnostic procedures
14. Alteration in urine elimination
Polyuria: urine volume in excess of 3L/day.
Oliguria : urine volume less than 500 ml/day.
Anuria : urine volume less than 100 ml/day.
Nocturia : frequent night time urination.
Dysuria :difficulty in urination/ burning maturation.
Enuresis :bed wetting.
Urinary incontinence and :involuntary dribbling of urine.
Urinary retention : inability to void the urine/ empty the bladder
completely.
15. Cont..
Haematuria : blood in the urine.
Proteinuria : presence of protein in the urine.
Glycosuria : presence of glucose in urine.
16. Urine specimen collection
Proper collection of specimen is important to maximize the
outcome of laboratory test for the diagnosis of infectious
diseases.
A variety of laboratory test can be performed to make a
presumptive or definitive diagnosis so that therapy can begin.
17. Types of urine specimen collection
Random specimen collection.
First morning specimen.
Clean catch or midstream urine.
Urine sample collection from catheter.
Supra pubic aspiration.
18. Diagnostic tests
Routine urine analysis.
Blood test (BUN and Creatinine Clearance).
Cystoscopy.
Intravenous pyelogram IVP.
Urine culture and sensitivity.
CT Scan.
19. Facilitating urine elimination
Providing urinal/bed pan,
Condom drainage.
Catheterization,
Care of urinary drainage, and perineal care.
20. Catheterization
Urinary catheterization is the insertion of a hollow tube through the
urethra into the bladder for removing urine.
It is a aseptic procedure for which sterile equipment's are required
Size of the catheter used
8-10 f are used for children's.
12-14 are used for female adults.
14,16, and 18 are used for male adults.
21. Purposes of urinary catheter
To relieve from urinary retention.
To obtain a sterile urine specimen.
To measure residual urine.
To empty the bladder before, during and after the surgery.
To measure the urine output accurately.
22. Types of catheterization
Intermittent catheter: an intermittent
catheter is used to drain the bladder for
short period or at once. It will have only
single lumen.
Indwelling/retention catheter:
This type of catheter placed in to bladder
and secured there for a period of time.
Supra pubic catheterization:
In this catheter is used to bladder by making
a small incision above the pubic area.
24. Preparation
Preparation of patient:
Prepare the patient mentally by explaining the procedure to gain cooperation.
Prepare the part (urethral opening).
Provide privacy and position the patient.
Prepare the articles:
Catheter
Bladder wash set
10cc/20cc syringe
Sterile water
Cotton balls with betadine
Lubricant
Sterile gloves
Urine bag
Micropore
25. Procedure of inserting catheter
Explain the procedure to the patient.
Provide privacy and adequate lightening and collect all articles.
Position the male patient in supine position and female patient in
dorsal recommend position.
Wash the hands.
Drape the perineal area.
Open the sterile catheter kit, using sterile technique.
Put on the sterile gloves.
Lubricate the catheter with sterile lubricant.
Retract the foreskin of the penis in male and open the labial folds in
female.
26. Continued..
Clean the urethra in a circular manner from inside to outer.
Hold the penis in 900 angle, insert the catheter and allow urinary
sphincter to relax.
Lower the catheter and continue to advance the catheter.
Note: never force the catheter to advance and discontinue the
procedure if there is resistance.
When the catheter reaches bladder urine starts to flow, gently insert
until 1-2 inches beyond where urine is noted.
Inflate the balloon, using correct amount of sterile liquid.
27. Continued
Gently pull the catheter until inflation balloon is sung against bladder
neck, and connect the catheter to drainage system.
Fix the tube with micropore and keep bag below the bladder level.
After care of procedure and articles
Discard the waste, Remove gloves and replace the articles.
Wash hands, and document the procedure.
28. Catheter care
Fix the catheter to thigh or abdominal wall of the patient.
Always keep urine bag below the bladder level.
Everyday morning catheter care should be given with aseptic
techniques.
Maintain close drainage system.
Irrigate bladder with antimicrobials.
Routinely examine for any signs of infection.
Dont collect urine sample from urine bag or catheter directly.
Provide Perineal care.
Dont allow the faecal matter to contaminate the catheter.
29. Removal of Urinary catheter
Once patient got relieved from the condition physician can plan to
remove the catheter.
Take a Sterile 10/20cc syringe.
Deflate the catheter.
Pull the catheter gently until catheter come out.
Discard the catheter, wash hands and document the procedure.