12.12
Sigmoïdoscopie en laparoscopie
Sigmoïdoscopie en laparoscopie zijn afzonderlijke medische procedures waarmee artsen verschillende delen van het maag-darmkanaal intern kunnen inspect…
Sigmoidoscopy uses a flexible sigmoidoscope to visualize the rectum and sigmoid colon for abnormalities like polyps, cancer, or bleeding.
It is inserted through the anus and guided into the colon.
Patient preparation includes a clear liquid diet the day before, overnight fasting, and 1-2 tap-water enemas before the procedure.
Instruct the patient to maintain the knee-chest position, breathe deeply during scope insertion, and expect an urge to defecate as the scope advances.
During the procedure, monitor vital signs, pain, and vagal responses such as lightheadedness.
After the procedure, monitor for rectal bleeding and signs of intestinal perforation, such as abdominal distention.
Next, laparoscopy is a keyhole surgical procedure using a fiberoptic instrument to visualize abdominal organs or perform small surgeries like appendectomies.
Patient preparation involves obtaining consent, keeping an 8-hour NPO, cleansing enema before the procedure, and administering preoperative sedatives.
Postoperative care includes monitoring vital signs, administering analgesics, and assessing the incision site and bowel sounds.
View the full transcript and gain access to JoVE Core videos
Q1: What abnormalities can sigmoidoscopy detect in the colon?
Sigmoidoscopy uses a flexible sigmoidoscope with a light source and camera to visualize the rectum and sigmoid colon, identifying abnormalities such as polyps, signs of colorectal cancer, inflammation, and sources of bleeding. The procedure enables direct visual inspection of the colon lining to detect these conditions early for diagnosis and treatment.
Q2: How should patients prepare for a sigmoidoscopy procedure?
Patients must follow a clear liquid diet the day before sigmoidoscopy, fast overnight, and receive one to two tap-water enemas on the morning of the procedure to cleanse the colon. They should assume the knee-chest position during the exam and take deep breaths during scope insertion to manage discomfort and the urge to defecate.
Q3: What complications should nurses monitor for after sigmoidoscopy?
After sigmoidoscopy, nurses must monitor for rectal bleeding and signs of intestinal perforation, including fever, rectal drainage, abdominal distention, and pain. Immediate assessment and intervention are essential to ensure patient safety and prevent serious complications from developing after the procedure.
Q4: What is pneumoperitoneum and why is it used in laparoscopy?
Pneumoperitoneum is the injection of carbon dioxide into the abdominal cavity to elevate the abdominal wall away from internal organs, creating space for visualization and surgical manipulation. This technique enables the surgeon to safely view abdominal organs and perform minimally invasive procedures through small incisions near the umbilicus.
Q5: What preoperative requirements must patients meet before laparoscopy?
Patients undergoing laparoscopy must obtain informed consent, fast for eight hours (NPO) to mitigate anesthesia-related risks, and may receive a cleansing enema to clear the colon. Preoperative medications, including antibiotics and pain management drugs, are administered based on individual patient needs and medical history.
Q6: How does laparoscopy differ from sigmoidoscopy in scope and application?
Sigmoidoscopy is a diagnostic endoscopic procedure examining the rectum and sigmoid colon for abnormalities, while laparoscopy is a minimally invasive surgical technique visualizing abdominal organs and performing small-scale surgeries like appendectomies. Laparoscopy requires general anesthesia and pneumoperitoneum, whereas sigmoidoscopy uses conscious sedation and does not require surgery.
Q7: What postoperative care is essential after laparoscopy?
After laparoscopy, patients are monitored for vital signs, oxygen saturation, and potential complications such as bleeding or anesthesia reactions. Shoulder pain from carbon dioxide use is common and not concerning. Pain management, wound care education, light diet progression, and activity restrictions are provided, with follow-up appointments essential for assessing recovery.