Wounds of the urinary bladder.—Perforating wounds of the bladder are the injuries nearest akin to those we have just considered, but a great gulf separates them, in so far as the escape of a few drops or even a considerable quantity of normal urine does not necessarily mean peritoneal infection. The difference in this particular was very forcibly demonstrated in my experience, since an uncomplicated perforation of the bladder in the intra-peritoneal portion of the viscus proved to be an injury that not infrequently recovered spontaneously, I believe in a considerable proportion of the cases.
I include only one such case in my list because it was the only example which happened to be under my personal observation during its whole course, but from time to time I was shown several others in which the position of the external apertures and the transient presence of hæmaturia left little doubt as to the nature of the injury. The case recounted above, No. 190, is of especial interest, since the patient recovered from an injury which involved both the bladder and a fixed portion of the large intestine in contact with its posterior surface.
In another, No. 194, a transient inflammatory thickening pointed to a local inflammation of a non-infective character, since no suppuration ensued, and this may have been a case of extra-peritoneal wound; on the other hand, the bladder may have entirely escaped injury. In wounds of the portions of the viscus not clad in peritoneum, as a rule, a very different prognosis obtains. Two typical cases are related, which I believe fairly represent the general results which follow when the bladder is either wounded behind the symphysis or at the base. The first case, No. 195, exemplifies a very characteristic form of wound when small-calibred bullets are concerned. The bullet, taking a course more or less parallel to that of the wall of the viscus, cut a long slit in its anterior wall. This bullet in its onward passage comminuted the horizontal ramus of the pubes, and lodged in the thigh. Into the latter region the greater part of the extravasated urine escaped. I think the history of this case fully shows that I made a blunder in not performing a proper exploration, instead of contenting myself with an incision in the thigh. My only excuse was that the patient at the time I saw him was in a very collapsed state, and a severe grade of abdominal distension suggested that septic peritonitis was already in an advanced stage. In point of fact, the patient at once improved, sufficiently so to be able to undergo a second exploration at a later date by Mr. Hanwell at the Base, only dying of septicæmia at the end of twenty-one days. Even a free supra-pubic vent might, I believe, have given him a chance of life.
When the perforation was at the base of the bladder, however, the prognosis was very bad, and, as far as I know, not a single patient escaped death. The increase of risk in an extra-peritoneal wound of this viscus is indeed very great, while an intra-peritoneal perforation may be considered an injury of lesser severity, provided the urine be of normal character.
(194a) Possible wound of the bladder.—Wounded at Magersfontein. Entry (Mauser), immediately above the symphysis pubis; exit, in the buttock, behind the tip of the left great trochanter. The man was struck while advancing, and fell, thinking at the time 'that he was struck in the foot.' He lay twelve hours on the field, and passed water for the first time when the bearer removed him. During the next two days he passed urine only twice, and no blood was noticed. The bowels acted on the evening of the third day. When seen on the fourth day he complained of aching pain in the lower part of the belly, and a concentric patch of tender induration extended for about 1½ inch around the wound. The abdominal wall was moving well. The tongue was clean and moist. There was no blood in the urine, and micturition was not frequent. Temperature 99.4°. Pulse 80, good strength. The patient was then sent to the Base. At the end of seventeen days there was still a little tenderness in the left iliac fossa; but the man was otherwise well, and at the end of a month he was sent home.
(195) Extra-peritoneal wound of the bladder.—Wounded at Magersfontein. Entry (Mauser), at the fore part of the right buttock. No exit. The patient was seen on the third day. He had an expression of extreme anxiety, and complained of very great pain in the abdomen and thigh. The abdomen was greatly distended and tympanitic, and the left thigh and groin were very much swollen and œdematous, with some redness of surface. Temperature 100°, pulse 120. No sickness, tongue moist, bowels confined. Retention of urine. The condition of the patient was very grave; but he was anæsthetised, clear urine was withdrawn from the bladder by catheter, and an incision was made into the thigh just below the inner third of Poupart's ligament, where fluctuation was evident. Two pints of bloody urine were evacuated, and when a finger was introduced it passed over a fracture of the pubes into the pelvis, but not into the peritoneal cavity. In view of the patient's condition it was not thought wise to proceed further, and he somewhat improved later, and was sent to the Base. Loss of power in the right lower extremity pointed to injury to the anterior crural nerve.
On the patient's arrival at Wynberg there were signs of local peritonitis in the lower half of the abdomen, and all his urine was passed from the wound in the left thigh. Some days later this wound was enlarged to allow of the freer exit of pus, and a fragment of bone was removed. The wound granulated healthily, but the man steadily emaciated and lost ground, with signs of chronic septicæmia, and he died on the twenty-first day. At the post-mortem examination a transverse wound of the anterior wall of the bladder behind the pubes, below the peritoneal reflexion, was found gaping somewhat widely, and 2 inches in length. There was little sign of previous peritonitis. The retained bullet was discovered beneath the femoral vessels in the left thigh.
(196) Extra-peritoneal perforation of the bladder.—Wounded at Paardeberg. Entry (Mauser), 3 inches above the left tuber ischii; exit, above the symphysis, immediately over the right margin of the penis. The patient was retiring to fetch ammunition when shot. Urine was noted to escape from both apertures the day after, and this continued until he was sent down to the Base on the fourteenth day. The patient was then considerably emaciated, complained of great pain, especially down the left thigh (sciatic nerve), the temperature averaged 100°, the pulse 80, tongue clean and moist, bowels acted regularly, no sign of injury to the rectum. He was taking food fairly, but was very sleepless. Urine was passed per urethram, and also escaped by both wounds. The abdomen was flaccid and sunken, respiratory movements being confined to the upper half.
As there was evidence of considerable infiltration in the buttock, the original entry wound was enlarged, and a catheter was tied into the bladder. Little change occurred in the symptoms and the local condition, urine and pus continued to escape freely from the posterior wound, and the patient gradually sank, dying on the thirty-eighth day. At the post-mortem examination the peritoneum was found intact and unaltered, but there was extensive pelvic cellulitis around the bladder, a large slough and some pus lying in the cavum Retzii. An aperture of entry still open existed in the centre of the anterior wall of the bladder, and a patent exit opening at the base of the trigone. The bullet had passed out of the pelvis by the great sciatic notch.
The above remarks and cases sufficiently set forth the prognosis in these injuries. For the intra-peritoneal lesions an expectant plan of treatment may be followed by uncomplicated recovery. Mention has already been made of a case in which a Mauser bullet was retained in the bladder and was subsequently passed per urethram. In such a case a cystotomy would be indicated were the bullet discovered in the viscus.