Слайд 2
Emergency Diagnosis & Management
About 10% of all injuries
seen in the emergency room involve the genitourinary system
to some extent.
Слайд 3
Many of them are subtle and difficult to
define and require great diagnostic expertise.
Early diagnosis is
essential to prevent serious complications.
Emergency Diagnosis & Management
Слайд 4
Emergency Diagnosis & Management
Initial assessment should include control
of hemorrhage and shock along with resuscitation as required.
Слайд 5
Emergency Diagnosis & Management
The history should include a
detailed description of the accident. In cases involving gunshot
wounds, the type and caliber of the weapon should be determined, since high-velocity projectiles cause much more extensive damage.
Слайд 6
Emergency Diagnosis & Management
The abdomen and genitalia should
be examined for evidence of contusions or subcutaneous hematomas,
which might indicate deeper injuries to the retroperitoneum and pelvic structures.
Слайд 7
Fractures of the lower ribs are often associated
with renal injuries, and pelvic fractures often accompany bladder
and urethral injuries.
Emergency Diagnosis & Management
Слайд 8
Patients who do not have life-threatening injuries and
whose blood pressure is stable can undergo more deliberate
radiographic studies.
Emergency Diagnosis & Management
Слайд 9
Emergency Diagnosis & Management
When genitourinary tract injury is
suspected on the basis of the history and physical
examination, additional studies are required to establish its extent.
Слайд 10
Assessment of Injury
Assessment of the injury should
be done in an orderly fashion so that accurate
and complete information is obtained.
Слайд 11
Catheterization
Blood at the urethral meatus in men
indicates urethral injury; catheterization should not be attempted if
blood is present, but retrograde urethrography should be done immediately.
Слайд 12
Catheterization
If no blood is present at the meatus,
a urethral catheter can be carefully passed to the
bladder to recover urine; microscopic or gross hematuria indicates urinary system injury.
Слайд 13
Catheterization
If catheterization is traumatic despite the greatest care,
the significance of hematuria cannot be determined, and other
studies must be done to investigate the possibility of urinary system injury.
Слайд 14
Computed Tomography (CT)
Abdominal CT with contrast media is
the best imaging study to detect and stage renal
and retroperitoneal injuries.
Слайд 15
Computed Tomography (CT)
It can define
the size
extent
of the retroperitoneal hematoma
Слайд 16
Computed Tomography (CT)
Spiral CT scanning, now common, is
very rapid, but it may not detect renal parenchymal
lacerations, urinary extravasation, or ureteral and renal pelvic injuries.
Слайд 17
Retrograde Cystography
Filling of the bladder with contrast material
is essential to establish whether bladder perforations exist.
Слайд 18
Retrograde Cystography
A film should be obtained with the
bladder filled and a second one after the bladder
has emptied itself by gravity drainage.
Слайд 19
Retrograde Cystography
Cystography with CT is excellent for establishing
bladder injury.
Слайд 20
Urethrography
A small (12F) catheter can be inserted into
the urethral meatus and 3 mL of water placed
in the balloon to hold the catheter in position.
Слайд 21
Urethrography
After retrograde injection of 20 mL
of water-soluble contrast material, the urethra will be clearly
outlined on film, and extravasation in the deep bulbar area in case of straddle injury or free extravasation into the retropubic space in case of prostatomembranous disruption will be visualized.
Слайд 22
Arteriography
Arteriography may help define renal parenchymal and renal
vascular injuries.
Слайд 23
Intravenous Urography
Intravenous urography can be used to detect
renal and ureteral injury.
Слайд 24
Cystoscopy and Retrograde Urography
Cystoscopy and retrograde urography may
be useful to detect ureteral injury, but are seldom
necessary, since information can be obtained by less invasive techniques.
Слайд 25
Abdominal Sonography
Abdominal sonography has not been shown to
add substantial information during initial evaluation of severe abdominal
trauma.
Слайд 26
Injuries to the Kidney
Renal injuries are the most
common injuries of the urinary system.
Слайд 27
Injuries to the Kidney
Most injuries occur from automobile
accidents or sporting mishaps, chiefly in men and boys..
Слайд 28
Injuries to the Kidney
Etiology
Blunt trauma directly to the
abdomen, flank, or back is the most common mechanism,
accounting for 80-85% of all renal injuries.
Слайд 29
Injuries to the Kidney
Vehicle collisions at high speed
may result in major renal trauma from rapid deceleration
and cause major vascular injury.
Слайд 30
Injuries to the Kidney
Associated abdominal visceral injuries are
present in 80% of renal penetrating wounds.
Слайд 31
Pathology & Classification
Early Pathologic Findings
Lacerations from blunt
trauma usually occur in the transverse plane of the
kidney.
Слайд 32
Pathology & Classification
Early Pathologic Findings
In injuries from
rapid deceleration, the kidney moves upward or downward, causing
sudden stretch on the renal pedicle and sometimes complete or partial avulsion.
Слайд 33
Pathology & Classification
Early Pathologic Findings
Acute thrombosis of
the renal artery may be caused by an intimal
tear from rapid deceleration injuries owing to the sudden stretch.
Слайд 34
Pathology & Classification
Hydronephrosis
Follow-up excretory urography is
indicated in all cases of major renal trauma.
Слайд 35
Pathology & Classification
Arteriovenous Fistula
Arteriovenous fistulas may
occur after penetrating injuries but are not common
Слайд 36
Pathology & Classification
Renal Vascular Hypertension
The blood
flow in tissue rendered nonviable by injury is compromised;
this results in renal vascular hypertension in less than 1% of cases.
Слайд 37
Clinical Findings & Indications for Studies
Microscopic or gross
hematuria following trauma to the abdomen indicates injury to
the urinary tract.
Слайд 38
Clinical Findings & Indications for Studies
Some cases of
renal vascular injury are not associated with hematuria.
Слайд 39
Clinical Findings & Indications for Studies
The degree of
renal injury does not correspond to the degree of
hematuria, since gross hematuria may occur in minor renal trauma and only mild hematuria in major trauma
Слайд 40
Clinical Findings & Indications for Studies
Miller and McAninch
(1995) made the following recommendations based on findings in
over 1800 blunt renal trauma injuries.
Слайд 41
Clinical Findings & Indications for Studies
However, should physical
examination or associated injuries prompt reasonable suspicion of a
renal injury, renal imaging should be undertaken.
Слайд 42
Clinical Findings & Indications for Studies
Symptoms
There is usually
visible evidence of abdominal trauma. Pain may be localized
to one flank area or over the abdomen.
Слайд 43
Clinical Findings & Indications for Studies
Catheterization usually reveals
hematuria.
Слайд 44
Clinical Findings & Indications for Studies
Signs
Initially, shock
or signs of a large loss of blood from
heavy retroperitoneal bleeding may be noted.
Слайд 45
Clinical Findings & Indications for Studies
Signs
Diffuse abdominal
tenderness may be found on palpation; an "acute abdomen"
usually indicates free blood in the peritoneal cavity. A palpable mass may represent a large retroperitoneal hematoma or perhaps urinary extravasation.
Слайд 46
Clinical Findings & Indications for Studies
Signs
The abdomen
may be distended and bowel sounds absent.
Слайд 47
Clinical Findings & Indications for Studies
Laboratory Findings
Microscopic
or gross hematuria is usually present.
Слайд 48
Clinical Findings & Indications for Studies
Staging and
X-Ray Findings
Staging of renal injuries allows a systematic approach
to these problems.
Слайд 49
Clinical Findings & Indications for Studies
Staging and
X-Ray Findings
For example, blunt trauma to the abdomen associated
with gross hematuria and a normal urogram requires no additional renal studies; however, nonvisualization of the kidney requires immediate arteriography or CT scan to determine whether renal vascular injury exists.
Слайд 50
Clinical Findings & Indications for Studies
Staging and
X-Ray Findings
Ultrasonography and retrograde urography are of little use
initially in the evaluation of renal injuries.
Слайд 51
Clinical Findings & Indications for Studies
Staging and
X-Ray Findings
Staging begins with an abdominal CT scan, the
most direct and effective means of staging renal injuries.
Слайд 52
Clinical Findings & Indications for Studies
Staging and
X-Ray Findings
This noninvasive technique clearly
defines parenchymal lacerations and
urinary extravasation,
Слайд 53
Clinical Findings & Indications for Studies
Staging and
X-Ray Findings
Arteriography defines major arterial and parenchymal injuries when
previous studies have not fully done so.
Слайд 54
Clinical Findings & Indications for Studies
Staging and
X-Ray Findings
The major causes of nonvisualization on an excretory
urogram are total pedicle avulsion, arterial thrombosis, severe contusion causing vascular spasm, and absence of the kidney (either congenital or from operation).
Слайд 55
Clinical Findings & Indications for Studies
Staging and
X-Ray Findings
Radionuclide renal scans have been used in staging
renal trauma.
Слайд 56
Clinical Findings & Indications for Studies
Differential Diagnosis
Trauma
to the abdomen and flank areas is not always
associated with renal injury.
Слайд 57
Clinical Findings & Indications for Studies
Complications
Early Complications
Hemorrhage
is perhaps the most important immediate complication of renal
injury.
Слайд 58
Clinical Findings & Indications for Studies
Complications
The size
and expansion of palpable masses must be carefully monitored.
Слайд 59
Clinical Findings & Indications for Studies
Complications
Urinary extravasation
from renal fracture may show as an expanding mass
(urinoma) in the retroperitoneum.
Слайд 60
Clinical Findings & Indications for Studies
Complications
A resolving
retroperitoneal hematoma may cause slight fever (38.3 °C), but
higher temperatures suggest infection.
Слайд 61
Clinical Findings & Indications for Studies
Complications
Late Complications
Hypertension,
hydronephrosis, arteriovenous fistula, calculus formation, and pyelonephritis are important
late complications.
Слайд 62
Clinical Findings & Indications for Studies
Complications
Heavy late
bleeding may occur 4 weeks after injury.
Слайд 63
Clinical Findings & Indications for Studies
Treatment: Emergency
Measures
The objectives of early management are prompt treatment of
shock and hemorrhage, complete resuscitation, and evaluation of associated injuries.
Слайд 64
Clinical Findings & Indications for Studies
Treatment: Surgical
Measures
Blunt Injuries
Bleeding stops spontaneously with bed rest and hydration.
Слайд 65
Clinical Findings & Indications for Studies
Treatment: Surgical
Measures
Cases in which operation is indicated include those associated
with persistent retroperitoneal bleeding, urinary extravasation, evidence of nonviable renal parenchyma, and renal pedicle injuries (less than 5% of all renal injuries). Aggressive preoperative staging allows complete definition of injury before operation.
Слайд 66
Clinical Findings & Indications for Studies
Treatment: Surgical
Measures
Penetrating Injuries
Penetrating injuries should be surgically explored.
Слайд 67
Clinical Findings & Indications for Studies
Treatment: Surgical
Measures
In 80% of cases of penetrating injury, associated organ
injury requires operation; thus, renal exploration is only an extension of this procedure.
Слайд 68
Clinical Findings & Indications for Studies
Treatment: Surgical
Measures
Treatment of Complications
Hydronephrosis may require surgical correction or nephrectomy.
Слайд 69
Clinical Findings & Indications for Studies
Treatment: Surgical
Measures
Prognosis
With careful follow-up, most renal injuries have an excellent
prognosis, with spontaneous healing and return of renal function.
Слайд 70
Clinical Findings & Indications for Studies
Treatment: Surgical
Measures
Injuries to the Ureter
Ureteral injury is rare but may
occur, usually during the course of a difficult pelvic surgical procedure or as a result of gunshot wounds.
Слайд 71
Clinical Findings & Indications for Studies
Treatment: Surgical
Measures
Etiology
Large pelvic masses (benign or malignant) may displace the
ureter laterally and engulf it in reactive fibrosis.
Слайд 72
Clinical Findings & Indications for Studies
Treatment: Surgical
Measures
Extensive carcinoma of the colon may invade areas outside
the colon wall and directly involve the ureter; thus, resection of the ureter may be required along with resection of the tumor mass.
Слайд 73
Clinical Findings & Indications for Studies
Treatment: Surgical
Measures
Devascularization may occur with extensive pelvic lymph node dissections
or after radiation therapy to the pelvis for pelvic cancer.
Слайд 74
Clinical Findings & Indications for Studies
Treatment: Surgical
Measures
Endoscopic manipulation of a ureteral calculus with a stone
basket or ureteroscope may result in ureteral perforation or avulsion.
Слайд 75
Clinical Findings & Indications for Studies
Treatment: Surgical
Measures
Pathogenesis & Pathology
The ureter may be inadvertently ligated and
cut during difficult pelvic surgery.
Слайд 76
Clinical Findings & Indications for Studies
Treatment: Surgical
Measures
Intraperitoneal extravasation of urine can also occur, causing ileus
and peritonitis.
Слайд 77
Clinical Findings
Symptoms
If the ureter has been completely or
partially ligated during operation, the postoperative course is usually
marked by fever of 38.3-38.8 °C as well as flank and lower quadrant pain.
Слайд 78
Clinical Findings
Symptoms
Ureteral injuries from external violence should be
suspected in patients who have sustained stab or gunshot
wounds to the retroperitoneum.
Слайд 79
Clinical Findings
Symptoms
Signs
The acute hydronephrosis of a totally ligated
ureter results in severe flank pain and abdominal pain
with nausea and vomiting early in the postoperative course and with associated ileus. Signs and symptoms of acute peritonitis may be present if there is urinary extravasation into the peritoneal cavity.
Слайд 80
Clinical Findings
Symptoms
Watery discharge from the wound or vagina
may be identified as urine by determining the creatinine
concentration of a small urine has many times the creatinine concentration found in serum and by intravenous injection of 10 mL of indigo carmine, which will appear in the urine as dark blue.
Слайд 81
Laboratory Findings
Ureteral injury from external violence is manifested
by microscopic hematuria in 90% of cases.
Слайд 82
Imaging Findings
Diagnosis is by excretory urography.
Слайд 83
Imaging Findings
Partial transection of the ureter results in
more rapid excretion, but persistent hydronephrosis is usually present,
and contrast extravasation at the site of injury is noted on delayed films.
Слайд 84
Imaging Findings
In acute injury from external violence, the
excretory urogram usually appears normal, with very mild fullness
down to the point of extravasation at the ureteral transection.
Retrograde ureterography demonstrates the exact site of obstruction or extravasation.
Слайд 85
Ultrasonography
Ultrasonography outlines hydroureter or urinary extravasation as it
develops into a urinoma and is perhaps the best
means of ruling out ureteral injury in the early postoperative period.
Слайд 86
Radionuclide Scanning
Radionuclide scanning demonstrates delayed excretion on the
injured side, with evidence of increasing counts owing to
accumulation of urine in the renal pelvis.
Слайд 87
Differential Diagnosis
Postoperative bowel obstruction and peritonitis may cause
symptoms similar to those of acute ureteral obstruction from
injury.
Слайд 88
Differential Diagnosis
Deep wound infection must be considered postoperatively
in patients with fever, ileus, and localized tenderness.
Слайд 89
Differential Diagnosis
Acute pyelonephritis in the early postoperative period
may also result in findings similar to those of
ureteral injury.
Слайд 90
Complications
Ureteral injury may be complicated by stricture formation
with resulting hydronephrosis in the area of injury.
Слайд 91
Treatment
Prompt treatment of ureteral injuries is required. The
best opportunity for successful repair is in the operating
room when the injury occurs.
Слайд 92
Treatment
Proximal urinary drainage by percutaneous nephrostomy or formal
nephrostomy should be considered if the injury is recognized
late or if the patient has significant complications that make immediate reconstruction unsatisfactory.
Слайд 93
Treatment
The goals of ureteral repair are to achieve
complete debridement, a tension-free spatulated anastomosis, watertight closure, ureteral
stenting (in selected cases), and retroperitoneal drainage.
Слайд 94
Lower Ureteral Injuries
Injuries to the lower third of
the ureter allow several options in management.
Слайд 95
Lower Ureteral Injuries
An antireflux procedure should be done
when possible.
Слайд 96
Lower Ureteral Injuries
Transureteroureterostomy may be used in lower-third
injuries if extensive urinoma and pelvic infection have developed.
Слайд 97
Midureteral Injuries
Midureteral injuries usually result from external violence
and are best repaired by primary ureteroureterostomy or transureteroureterostomy.
Слайд 98
Upper Ureteral Injuries
Injuries to the upper third of
the ureter are best managed by primary ureteroureterostomy.
Слайд 99
Stenting
Most anastomoses after repair of ureteral injury should
be stented.
Слайд 100
Stenting
After 3-4 weeks of healing, stents can be
endoscopically removed from the bladder.
Слайд 101
Prognosis
The prognosis for ureteral injury is excellent if
the diagnosis is made early and prompt corrective surgery
is done.
Слайд 102
Injuries to the Bladder
Bladder injuries occur most often
from external force and are often associated with pelvic
fractures.
Слайд 103
Injuries to the Bladder
Iatrogenic injury may result from
gynecologic and other extensive pelvic procedures as well as
from hernia repairs and transurethral operations.
Слайд 104
Injuries to the Bladder
Pathogenesis & Pathology
The bony pelvis
protects the urinary bladder very well. When the pelvis
is fractured by blunt trauma, fragments from the fracture site may perforate the bladder .
Слайд 105
Injuries to the Bladder
Pathogenesis & Pathology
When the bladder
is filled to near capacity, a direct blow to
the lower abdomen may result in bladder disruption.
Слайд 106
Injuries to the Bladder
Pathogenesis & Pathology
If the diagnosis
is not established immediately and if the urine is
sterile, no symptoms may be noted for several days.
Слайд 107
Injuries to the Bladder
Clinical Findings
Pelvic fracture accompanies
bladder rupture in 90% of cases.
Слайд 108
Injuries to the Bladder
Symptoms
There is usually a
history of lower abdominal trauma.
Слайд 109
Injuries to the Bladder
Signs
Heavy bleeding associated with
pelvic fracture may result in hemorrhagic shock, usually from
venous disruption of pelvic vessels.
Слайд 110
Injuries to the Bladder
Signs
An acute abdomen may
occur with intraperitoneal bladder rupture.
Слайд 111
Injuries to the Bladder
Laboratory Findings
Catheterization usually is
required in patients with pelvic trauma but not if
bloody urethral discharge is noted.
Слайд 112
Injuries to the Bladder
Laboratory Findings
When catheterization is
done, gross or, less commonly, microscopic hematuria is usually
present.
Слайд 113
Injuries to the Bladder
X-Ray Findings
A plain abdominal
film generally demonstrates pelvic fractures.
Слайд 114
Injuries to the Bladder
X-Ray Findings
Bladder disruption is
shown on cystography.
Слайд 115
Injuries to the Bladder
X-Ray Findings
The drainage film
is extremely important, because it demonstrates areas of extraperitoneal
extravasation of blood and urine that may not appear on the filling film.
Слайд 116
Injuries to the Bladder
X-Ray Findings
CT cystography is
an excellent method for detecting bladder rupture; however, retrograde
filling of the bladder with 300 mL of contrast medium is necessary to distend the bladder completely.
Слайд 117
Injuries to the Bladder
X-Ray Findings
Incomplete distention with
consequent missed diagnosis of bladder rupture often occurs when
the urethral catheter is clamped during standard abdominal CT scan with intravenous contrast injection.
Слайд 118
Injuries to the Bladder
Complications
A pelvic abscess may
develop from extraperitoneal bladder rupture; if the urine becomes
infected, the pelvic hematoma becomes infected too.
Слайд 119
Injuries to the Bladder
Complications
Partial incontinence may result
from bladder injury when the laceration extends into the
bladder neck.
Слайд 120
Injuries to the Bladder
Treatment
Emergency Measures
Shock and hemorrhage
should be treated.
Слайд 121
Injuries to the Bladder
Treatment
Surgical Measures
A lower midline
abdominal incision should be made.
Слайд 122
Injuries to the Bladder
Treatment
The bladder should be
opened in the midline and carefully inspected.
Слайд 123
Injuries to the Bladder
Treatment
Extraperitoneal Bladder Rupture
Extraperitoneal bladder
rupture can be successfully managed with urethral catheter drainage
only.
Слайд 124
Injuries to the Bladder
Treatment
As the bladder is
opened in the midline, it should be carefully inspected
and lacerations closed from within.
Слайд 125
Injuries to the Bladder
Treatment
Extraperitoneal bladder lacerations occasionally
extend into the bladder neck and should be repaired
meticulously
Слайд 126
Injuries to the Bladder
Treatment
Intraperitoneal Rupture
Intraperitoneal bladder ruptures
should be repaired via a transperitoneal approach after careful
transvesical inspection and closure of any other perforations. The peritoneum must be closed carefully over the area of injury.
Слайд 127
Injuries to the Bladder
Treatment
The bladder is then
closed in separate layers by absorbable suture.
Слайд 128
Injuries to the Bladder
Treatment
Pelvic Fracture
Stable fracture of
the pubic rami is usually present.
Слайд 129
Injuries to the Bladder
Treatment
Pelvic Hematoma
There may be
heavy uncontrolled bleeding from rupture of pelvic vessels even
if the hematoma has not been entered at operation.
Слайд 130
Injuries to the Bladder
Treatment
If bleeding persists, it
may be necessary to leave the tapes in place
for 24 h and operate again to remove them.
Слайд 131
Injuries to the Bladder
Treatment
Prognosis
With appropriate treatment, the
prognosis is excellent.
Слайд 132
Injuries to the Bladder
Treatment
Patients with lacerations extending
into the bladder neck area may be temporarily incontinent,
but full control is usually regained.
Слайд 133
Injuries to the Urethra
Urethral injuries are uncommon and
occur most often in men, usually associated with pelvic
fractures or straddle-type falls. They are rare in women.
Слайд 134
Injuries to the Urethra
Various parts of the urethra
may be lacerated, transected, or contused.
Слайд 135
Injuries to the Posterior Urethra
Etiology
The membranous urethra passes
through the pelvic floor and voluntary urinary sphincter and
is the portion of the posterior urethra most likely to be injured.
Слайд 136
Injuries to the Posterior Urethra
The urethra can be
transected by the same mechanism at the interior surface
of the membranous urethra.
Слайд 137
Injuries to the Posterior Urethra
Clinical Findings
Symptoms
Patients usually
complain of lower abdominal pain and inability to urinate.
Слайд 138
Injuries to the Posterior Urethra
Clinical Findings
Signs
Blood at
the urethral meatus is the single most important sign
of urethral injury.
Слайд 139
Injuries to the Posterior Urethra
Clinical Findings
The presence
of blood at the external urethral meatus indicates that
immediate urethrography is necessary to establish the diagnosis.
Слайд 140
Injuries to the Posterior Urethra
Clinical Findings
Suprapubic tenderness
and the presence of pelvic fracture are noted on
physical examination.
Слайд 141
Injuries to the Posterior Urethra
Clinical Findings
Rectal examination
may reveal a large pelvic hematoma with the prostate
displaced superiorly.
Слайд 142
Injuries to the Posterior Urethra
Clinical Findings
Superior displacement
of the prostate does not occur if the puboprostatic
ligaments remain intact.
Слайд 143
Injuries to the Posterior Urethra
X-Ray Findings
Fractures of
the bony pelvis are usually present. A urethrogram (using
20-30 mL of water-soluble contrast material) shows the site of extravasation at the prostatomembranous junction.
Слайд 144
Injuries to the Posterior Urethra
X-Ray Findings
Ordinarily, there
is free extravasation of contrast material into the perivesical
space.
Слайд 145
Injuries to the Posterior Urethra
Instrumental Examination
The only
instrumentation involved should be for urethrography.
Слайд 146
Injuries to the Posterior Urethra
Differential Diagnosis
Bladder rupture
may be associated with posterior urethral injuries in approximately
20% of cases.
Слайд 147
Injuries to the Posterior Urethra
Complications
Stricture, impotence, and
incontinence as complications of prostatomembranous disruption are among the
most severe and debilitating mishaps that result from trauma to the urinary system.
Слайд 148
Injuries to the Posterior Urethra
Complications
Stricture following primary
repair and anastomosis occurs in about 50% of cases.
Слайд 149
Injuries to the Posterior Urethra
Complications
The incidence of
impotence after primary repair is 30-80% (mean, about 50%).
Слайд 150
Injuries to the Posterior Urethra
Treatment
Emergency Measures
Shock and
hemorrhage should be treated.
Слайд 151
Injuries to the Posterior Urethra
Treatment
Surgical Measures
Urethral catheterization
should be avoided.
Слайд 152
Injuries to the Posterior Urethra
Treatment
Immediate Management
Initial management
should consist of suprapubic cystostomy to provide urinary drainage.
Слайд 153
Injuries to the Posterior Urethra
Treatment
The bladder often
is distended by a large volume of urine accumulated
during the period of resuscitation and operative preparation.
Слайд 154
Injuries to the Posterior Urethra
Treatment
The bladder should
be opened in the midline and carefully inspected for
lacerations.
Слайд 155
Injuries to the Posterior Urethra
Treatment
This approach involves
no urethral instrumentation or manipulation.
Слайд 156
Injuries to the Posterior Urethra
Treatment
Incomplete laceration of
the posterior urethra heals spontaneously, and the suprapubic cystostomy
can be removed within 2-3 weeks.
Слайд 157
Injuries to the Posterior Urethra
Treatment
Delayed Urethral Reconstruction
Reconstruction
of the urethra after prostatic disruption can be undertaken
within 3 months, assuming there is no pelvic abscess or other evidence of persistent pelvic infection
Слайд 158
Injuries to the Posterior Urethra
Treatment
This stricture usually
is 1 -2 cm long and situated immediately posterior
to the pubic bone.
Слайд 159
Injuries to the Posterior Urethra
Treatment
A 16F silicone
urethral catheter should be left in place along with
a suprapubic cystostomy.
Слайд 160
Injuries to the Posterior Urethra
Treatment
Immediate Urethral Realignment
Some
surgeons prefer to realign the urethra immediately.
Слайд 161
Injuries to the Posterior Urethra
Treatment
General Measures
After delayed
reconstruction by a perineal approach, patients are allowed ambulation
on the first postoperative day and usually can be discharged within 3 days.
Слайд 162
Injuries to the Posterior Urethra
Treatment
Treatment of Complications
Approximately 1 month after the delayed reconstruction, the
urethral catheter can be removed and a voiding cystogram obtained through the suprapubic cystostomy tube.
Слайд 163
Injuries to the Posterior Urethra
Treatment
If the cystogram
shows a patent area of reconstruction free of extravasation,
the suprapubic catheter can be removed; if there is extravasation or stricture, suprapubic cystostomy should be maintained.
Слайд 164
Injuries to the Posterior Urethra
Treatment
Stricture, if present
(< 5%), is usually very short, and urethrotomy under
direct vision offers easy and rapid cure.
Слайд 165
Injuries to the Posterior Urethra
Treatment
The patient may
be impotent for several months after delayed repair.
Слайд 166
Injuries to the Posterior Urethra
Treatment
Incontinence after posterior
urethral rupture and delayed repair is rare (< 2%)
and is usually related to the extent of injury rather than to the repair.
Слайд 167
Injuries to the Posterior Urethra
Treatment
Prognosis
If complications can
be avoided, the prognosis is excellent.
Слайд 168
Injuries to the Anterior Urethra
Etiology
The anterior urethra is
the portion distal to the urogenital diaphragm.
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Injuries to the Anterior Urethra
Pathogenesis & Pathology
Contusion
Contusion of the urethra is a sign of crush
injury without urethral disruption.
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Injuries to the Anterior Urethra
Pathogenesis & Pathology
Laceration
A severe straddle injury may result in laceration of
part of the urethral wall, allowing extravasation of urine.
Слайд 171
Injuries to the Anterior Urethra
Clinical Findings
Symptoms
There is
usually a history of a fall, and in some
cases a history of instrumentation. Bleeding from the urethra is usually present
Слайд 172
Injuries to the Anterior Urethra
Clinical Findings
If voiding
has occurred and extravasation is noted, sudden swelling in
the area will be present. If diagnosis has been delayed, sepsis and severe infection may be present.
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Injuries to the Anterior Urethra
Clinical Findings
Signs
The perineum
is very tender, and a mass may be found.
Rectal examination reveals a normal prostate. The patient usually has a desire to void, but voiding should not be allowed until assessment of the urethra is complete.
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Injuries to the Anterior Urethra
Clinical Findings
No attempt
should be made to pass a urethral catheter, but
if the patient's bladder is overdistended, percutaneous suprapubic cystostomy can be done as a temporary procedure.
Слайд 175
Injuries to the Anterior Urethra
Clinical Findings
When presentation
of such injuries is delayed, there is massive urinary
extravasation and infection in the perineum and the scrotum.
Слайд 176
Injuries to the Anterior Urethra
Laboratory Findings
Blood loss
is not usually excessive, particularly if secondary injury has
occurred.
Слайд 177
Injuries to the Anterior Urethra
X-Ray Findings
A contused
urethra shows no evidence of extravasation.
Слайд 178
Injuries to the Anterior Urethra
Complications
Heavy bleeding from
the corpus spongiosum injury may occur in the perineum
as well as through the urethral meatus.
Слайд 179
Injuries to the Anterior Urethra
Complications
The complications of
urinary extravasation are chiefly sepsis and infection.
Слайд 180
Injuries to the Anterior Urethra
Complications
Stricture at the
site of injury is a common complication, but surgical
reconstruction may not be required unless the stricture significantly reduces urinary flow rates.
Слайд 181
Injuries to the Anterior Urethra
Treatment
General Measures
Major blood
loss usually does not occur from straddle injury.
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Injuries to the Anterior Urethra
Treatment
Specific Measures: Urethral
Contusion
The patient with urethral contusion shows no evidence of
extravasation, and the urethra remains intact.
Слайд 183
Injuries to the Anterior Urethra
Treatment
Urethral Lacerations
Instrumentation of
the urethra following urethrography should be avoided.
Слайд 184
Injuries to the Anterior Urethra
Treatment
If only minor
extravasation is noted on the urethrogram, a voiding study
can be performed within 7 days after suprapubic catheter drainage to search for extravasation.
Слайд 185
Injuries to the Anterior Urethra
Treatment
Most of these
strictures are not severe and do not require surgical
reconstruction
Слайд 186
Injuries to the Anterior Urethra
Treatment
Urethral Laceration with
Extensive Urinary Extravasation
After major laceration, urinary extravasation may involve
the perineum, scrotum, and lower abdomen.
Слайд 187
Injuries to the Anterior Urethra
Treatment
Immediate Repair
Immediate repair
of urethral lacerations can be performed, but the procedure
is difficult and the incidence of associated stricture is high
Слайд 188
Injuries to the Anterior Urethra
Treatment
Treatment of Complications
Strictures
at the site of injury may be extensive and
require delayed reconstruction.
Слайд 189
Injuries to the Anterior Urethra
Treatment
Prognosis
Urethral stricture is
a major complication but in most cases does not
require surgical reconstruction.
Слайд 190
Injuries to the Penis
Disruption of the tunica albuginea
of the penis (penile fracture) can occur during sexual
intercourse.
Слайд 191
Injuries to the Penis
Gangrene and urethral injury may
be caused by obstructing rings placed around the base
of the penis
Слайд 192
Injuries to the Penis
Injuries to the penis should
suggest possible urethral damage, which should be investigated by
urethrography.
Слайд 193
Injuries to the Scrotum
Superficial lacerations of the scrotum
may be debrided and closed primarily. Blunt trauma may
cause local hematoma and ecchymosis, but these injuries resolve without difficulty. One must be certain that testicular rupture has not occurred.
Слайд 194
Injuries to the Scrotum
Total avulsion of the scrotal
skin may be caused by machinery accidents or other
major trauma. The testes and spermatic cords are usually intact.
Слайд 195
Injuries to the Scrotum
Later reconstruction of the scrotum
can be done with a skin graft or thigh
flap.