The sutures may be fastened by passing the ends through a perforated shot which is slipped down to the line of union and compressed by the shot-compressor (Fig. 32). All blood should be carefully removed from the surfaces that are brought together. The sutures should only be sufficiently tense to produce accurate apposition. A light gauze drain should be introduced in the vagina, and should be removed in forty-eight hours. Afterward one vaginal douche of about a quart of warm bichloride solution (1:2000) should be administered every day. After the douche the labia should be separated and the vagina carefully dried by cotton held in dressing-forceps. Except in those cases in which the sphincter ani is involved, the bowels may be moved on the second or third day. The woman should stay in bed for two weeks, at the end of which time the sutures should be removed. She should avoid heavy lifting, long standing, and bicycle- or horseback-riding for two months after the operation. Constipation should always be avoided. Coitus may be resumed six weeks after operation. The special forms of operation will be discussed in the consideration of the varieties of perineal injury. =Slight Median laceration of the Perineum.=--In this injury the tear takes place through the fourchette. Posteriorly it may extend as far as the sphincter ani muscle. Upward it may extend for an inch up the posterior vaginal wall. The appearance of this tear is shown in Fig. 33. It will be noted that, as this tear takes place in the median line, none of the muscles that support the perineum are involved, nor are the planes of fascia injured. The perineum is slightly split, and the insertions and origins of the muscles and the fascia are slightly separated. The supporting structures of the perineum and the pelvic floor are, however, uninjured. [Illustration: FIG. 33.--Recent slight median laceration of the perineum: sutures introduced.] If this tear is detected after labor, it should be closed by the immediate operation. A slight tear involving chiefly the cutaneous aspect of the perineum should be closed by three or four sutures introduced from the outside, as in Fig. 33. The needle should be introduced about a quarter of an inch from the edge of the wound. It should not be passed parallel with the plane of the lacerated surface, but should be swept outward and then inward toward the angle at the bottom of the tear (Fig. 34). It may either emerge at the angle and be re-introduced, or it may be passed directly through to the skin-margin on the opposite side of the wound. If the suture is passed in this way, there will be perfect apposition throughout the whole surface of laceration. If the sutures are improperly passed, there may result only apposition of the skin-edges. [Illustration: FIG. 34.--Diagram representing the correct and the incorrect method of passing the suture for closure of slight perineal laceration.]