Comprehensive Overview of Urology Surgical Procedures and Diagnostics
Cystoscopy: Diagnostic and Therapeutic Applications
Cystoscopy is a urological procedure that utilizes an instrument called a cystoscope to inspect the interior of the urethra and the bladder. There are two primary types of cystoscopes used in clinical practice: the flexible cystoscope and the rigid cystoscope. The choice between these instruments often determines the type of anesthesia required. A flexible cystoscopy may be performed under local anaesthesia or general anaesthesia, whereas a rigid cystoscopy typically requires the patient to be under general anaesthesia.
There are several clinical indications for performing a cystoscopy. These include investigating the causes of a frequent urinary tract infection (uti), identifying the source of hematuria (blood in the urine), and assessing symptoms like urinary frequency or urinary urgency. Additionally, the procedure is used to evaluate urine retention, urine incontinence, and complaints of pain or burning during or after urination.
Ureteroscopy (URS) and Retrograde Intrarenal Surgery (RIRS)
Ureteroscopy involves the use of a ureteroscope (urs) to examine the internal structures of the ureters and the kidney. A ureteroscope is characterized as being longer and thinner than a standard cystoscope, allowing the urologist to capture a detailed image of the lining of the ureters and the kidney. Like cystoscopes, ureteroscopes are available in two types: rigid and flexible.
Ureteroscopy is performed for both diagnostic and therapeutic purposes. During the procedure, a urologist can visualize stones in the ureters or kidney, as well as identify abnormal tissue. Therapeutic interventions possible during a urs include the removal of stones from the ureters or kidney, the treatment of narrowing ureters using balloons for dilation, and the collection of a biopsy from the ureters.
Dynamic procedures such as Retrograde Intrarenal Surgery (RIRS) utilize flexible ureteroscopy within the kidney. In this process, a kidney stone is fragmented using a holmium laser. Once fragmented, the resulting stone fragments are captured and removed using a tipless basket. The typical pathway for the ureteroscope is through the urethra, into the bladder, and up through the ureter to reach the kidney.
Transurethral Resection of the Prostate (TURP)
Transurethral resection of the prostate, commonly known as turp, is a surgical treatment for B.P.H (benign prostat hyperplasia). This procedure utilizes a specialized instrument called a resectoscopy, which is inserted through the tip of the pains to the urethra. Turp is indicated for patients with moderate to sever urinary proplam that have not responded to medical therapy. It is considered the most effective treatment for an enlargement prostat.
By addressing the obstruction caused by benign prostat hyperplasia, turp helps reduce several urinary symptoms. These include the frequent and urgent need to urination, slow or prolonged urination, and an increased frequency of urination at night. Furthermore, the procedure can mitigate complications such as u t I and the formation of bladder stone. However, complications may occur after a turp, including uti, bleeding, and turp syndrom, which is characterized by dangerously low sodium in the blood.
Transurethral Resection of Bladder Tumor (TURBT)
Transurethral resection tumor, or turt, is a procedure performed under general anaesthesia to remove bladder tumors. Similar to a turp, the urologist uses a resectoscope inserted through the tip of the pains, through the urethra, and into the bladder. Once the tumor is removed, a biopsy is sent to the lab for analysis.
Following the completion of the procedure, a size three-way follys catheter is inserted, and irrigation is maintained using (normal saline). Post-operative monitoring includes checking the patient's pcv and p.t. After the patient is discharged, they must attend follow-up appointments every 3 month. Potential complications associated with turt include bleeding, bladder infaction (also known as cystitis), perforation of the waal bladder, and hematuria.
Suprapubic Cystostomy
Cystostomy, specifically superapubic cystostomy, is a surgical procedure where an opening is made into the bladder directly above the pubic bone. A catheter is then inserted into the bladder through this opening and held in place by either balloons or sutures. This procedure can be classified as temporary, permanent, or emergency, depending on the patient's needs. The anesthesia used for a cystostomy can be local, spinal, or general anaesthesia (ga).
Indications for a suprapubic cystostomy include acute urine retention where transurethral catheterization is not possible, a ruptured urethra, and chronic retention associated with a neurogenic bladder.
Sachse: Treatment for Urethral Stricture
Urethral stricture refers to the narrowing of the urethra caused by scarring, which results from fibrosis. The etiology of these strictures is divided into two categories: congenital and acquired. Acquired causes often include trauma or infection. Healthcare providers diagnose the condition through symptoms such as a decreased flow of urine, frequency, terminal dribbling, a sensation of incomplete bladder emptying, and urine retention. Risk factors for developing a stricture include a recent uti or the previous use of a catheter.
During a physical examination, clinical signs may include a decrease in urine flow and bulging in the suprapubic region. Diagnostic tests used to confirm the condition include Uroflowmetry and radiological exams like a Urethrogram. Treatment options for urethral stricture involve Dilatation, Internal urethrotomy, Externa urethrotomy, and Urethroplasty.
Percutaneous Nephrolithotomy (PCNL)
Percutaneous nephreolithotomy (pcnl) is indicated for treating kidney stones that are too large for other procedures, usually defined as stones larger than . An advantage of pcnl over traditional open surgery is that the latter requires a large flank incision, whereas pcnl is performed through a small skin incision of approximately .
Pre-operative preparation for pcnl is extensive. It includes a urine anylsis, securing 2 units of blood, and conducting lab tests such as cbc, kft, and pt ptt inr. Patients must undergo shaving, remain npo after (midnight), and stop taking any anti coagulent medications.
The pcnl procedure is performed under ga (general anaesthesia) with the patient in the prone position, though it begins in the lithotomy position. In the lithotomy stage, a small retrograde catheter is placed up through the ureter using a cystoscope, and a follys catheter is inserted. The patient is then moved to the prone position. A nephrestomy needle is used to create a tract, which is dilated to approximately to allow for the placement of a plastic sheet and the insertion of a nephroscope. Using ultrasonic waves, the urologist directly visualizes and fragments the stone into small pieces. Finally, a nephrestomy is inserted for drainage. Potential complications of pcnl include bleeding, infaction, and failure to remove stone.