(^482) Medical-Surgical Nursing Demystified
(to decrease bacterial counts), and the staff are wearing double layers of clothes.
Warmers can be set up for the patients during certain procedures when heat loss is
expected—a large, open operative site or a long duration of surgery.
At the end of the surgical procedure, the wound is closed. The closure is to hold
the wound edges together and to prevent contamination. Closure may be achieved
with sutures (either absorbable or nonabsorbable), staples, glue, or skin closure
tape. Nonabsorbable sutures and staples will have to be removed in the post-
operative period.
Drains may be inserted near the operative site if significant wound drainage is
anticipated. Some drains are attached to suction, some have self-suction, and some
will drain due to gravity. The wound site is covered with a sterile dressing before
the patient is transferred out of the operating room.
ANESTHESIA
Anesthesia can be administered via general or regional routes (for major proce-
dures) or conscious sedation (for minor procedures). General anesthesia renders
the patient unconscious and incapable of breathing on his or her own; pain recep-
tion is also blocked. These patients must be intubated and mechanically ventilated
for the duration of the anesthesia. Regional anesthesia can be achieved through
nerve blocks, or epidural or spinal anesthesia. Nerve blocks occur when an anes-
thetic agent is injected into an area immediately surrounding a particular nerve
or nerve bundle. The nerve tissue becomes anesthetized, effectively causing the
tissue that it supplies to become pain-free. With epidural anesthesia, an anesthetic
agent is injected into the epidural space surrounding the spinal column, usually in
the lower lumbar area. The nerves become anesthetized as they leave the spinal
column, causing the area of the body supplied by these nerves to become pain-free.
This anesthesia is most commonly associated with childbirth but is used for many
surgical procedures. Spinal anesthesia is not commonly used; the anesthetic agent
is injected into the cerebrospinal fluid. Patient positioning is very important, as
gravity will cause the anesthetic agent to travel. The patient must remain flat after
the procedure to prevent leakage of cerebrospinal fluid from the puncture site.
The Postoperative Period
After the surgery, the patient enters the postoperative period. The immediate post-
operative period requires close monitoring as the patient emerges from anesthesia.4