laproscopy

Laparoscopy & Hysteroscopy

Dr. Raghad Abdul Halim

The single most important change in gynecological surgical practice over the last 20–30 years is the endoscopic surgery.

Equipment common to hysteroscopy and laparoscopy: للدرس و للفهم

LIGHT SOURCE AND LIGHT LEAD Laparoscopy requires a brighter light to sufficiently illuminate a larger cavity at a greater distance compared with hysteroscopy, and the same is true in the presence of bleeding as blood absorbs light. Light leads are of two types: fiber optic or liquid. The former are more common because they are cheaper, but the fibers are prone to breaking with gradual deterioration in light transmission.
CAMERA AND MONITOR SYSTEM
ELECTROSURGICAL GENERATOR: used for haemostasis or cutting, and has be bipolar, monopolar cutting and monopolar coagulation.
PHOTO AND VIDEO DOCUMENTATION.

Equipment for hysteroscopy:

HYSTEROSCOPES: Both rigid and flexible hysteroscopes are available, the majority of gynecologists preferring the former because the image tends to be superior. Rigid hysteroscope have a rod-lens optical system, and it is of different sizes (4 and 2.9 mm being popular sizes), and angles of view at 0, 12, 15, or 30 degree angles of view.

UTERINE DISTENSION: The uterine cavity is a potential space and has to be distended at relatively high pressure to afford a view. To achieve this, gas (CO2), low-viscosity fluids (e.g. N/saline, 5% dextrose, 1.5% glycine, 3% sorbitol, 5% mannitol) or high-viscosity fluid (e.g. Hyskon, which is 32% dextran 70 in dextrose) can be used. Diagnostic hysteroscopy is typically done using CO2 or N/saline, operative hysteroscopy with mechanical instruments or laser with N/saline, and resectoscopic surgery with electrolyte free solutions such as glycine, sorbitol or mannitol.The pressure required to provide an adequate view of the uterine cavity depends on a number of factors, but tends to be around 100 mmHg.

MECHANICAL INSTRUMENTS: scissors, grasping and biopsy forceps and monopolar electrodes can be used with operating sheaths for minor procedures such as target biopsy or polypectomy
RESECTOSCOPE: The modern resectoscope consists of five components the optic, handle mechanism, inflow and outflow sheath and an electrode for polypectomy, myomectomy, endometrial resection, endometrial ablation, and metroplasty.


Equipment for laparoscopy:
LAPAROSCOPES :As with rigid hysteroscopes, most laparoscopes are built around a rod-lens system and come in a number of diameters (3–12 mm) and angles of view [0–30 degree], with 10 mm degree scopes being the most widely used.

VERESS NEEDLE: Traditionally, gynecologists use a Veress needle to insufflate the abdomen with gas at the start of laparoscopy. The usual insertion point for the Veress needle is the inferior border of the umbilicus, A well-recognized alternative to subumbilical insufflations is the use of Palmer’s point, which is situated in the left mid-clavicularline approximately 3 cm below the costal margin. The left upper quadrant of the abdomen is the area least likely to be affected by adhesions, so Palmer’s point is useful when there is a concern about possible lower abdominal or peri-umbilical adhesions (e.g. midline laparotomy incision, appendicitis). Palmer’s point is also useful when dealing with a large pelvic mass.

TROCARS AND CANNULAE: Trocars and cannulae act as a conduit for the laparoscope and other instruments. They come in a variety of sizes depending on the diameter of the instrumentation to be accommodated, with 5 mm and 10–12 mm ports being the most commonly required.

LAPAROSCOPIC INSUFFLATOR: These pumps control intra-abdominal pressure rather than flow of CO2, and this should be set at 12–15 mmHg; a higher pressure of up to 25mmHg is acceptable during the set-up phase as this has the effect of increasing the distance between any trocar being inserted and bowel or large blood vessels, thereby in theory at least, reducing the risk of injury.

SUCTION/IRRIGATION PUMP: can be used to aspirate blood and clean the pelvis, ovarian cysts can be quickly deflated, ectopic pregnancies sucked out.

ANCILLARY INSTRUMENTS: If the laparoscope is the eye of the surgeon, grasping forceps are the surgeon’s hands. Bipolar forceps should always be available for haemostasis. Pre-tied loop sutures, suture carriers and needle holders should be available for major procedures both for haemostasis and repair. One or two ancillary ports are inserted in the lower abdomen. Injury by the ancillary ports can be minimized by inserting them under direct vision having identified the deep and superficial epigastric vessels and the bladder. A useful concept here is that of the ‘safe triangle’ which is bounded by the umbilical ligaments (remnants of the umbilical vessels) laterally with the symphysis pubis as its base and the umbilicus as its apex; although the position of the inferior epigastric vessels can be variable, their course is always lateral to the safe triangle. Ports should therefore be placed either inside the safe triangle or lateral to the inferior epigastric vessels.a

Diagnostic hysteroscopy: (من هنا للفهم والحفظ)

Diagnostic hysteroscopy has become a basic investigation in modern gynecology and has essentially replaced the time honored D & C (dilation and curettage). It can be done as an outpatient procedure, and is an integral component of a One-Stop approach to the management of menstrual symptoms.

Indications to diagnostic hysteroscopy:

Abnormal menstruation (age >40 years)
Abnormal menstruation not responsive to medical treatment (age <40 years)
Intermenstrual bleeding (IMB) despite normal cervical smear
Post coital bleeding (PCB) despite normal cervical smear
Post menopausal bleeding (PMB) (persistent or endometrial thickness ≥4 mm)
Abnormal pelvic ultrasound findings (e.g. endometrial polyps, submucous fibroids)
Subfertility
Recurrent miscarriage
Asherman’s syndrome
Congenital uterine anomaly
Lost intrauterine contraceptive device (IUCD)


Contraindications to diagnostic hysteroscopy:
Pelvic infection
Pregnancy
Cervical cancer

Complications of diagnostic hysteroscopy:

Diagnostic hysteroscopy is a safe procedure, and complications are uncommon. Perhaps the most frequently seen problem is:
pain when negotiating the cervix or distending the uterine cavity, and a vaso-vagal reaction to cervical dilatation (can be solved by giving local anaesthesia)
Uterine perforation in extreme cervical stenosis can occur; in this situation, insertion of the hysteroscope under ultrasound guidance is a useful ploy, as may be prior priming with a prostaglandin.
Infection and excessive bleeding are rarely seen.

Operative hysteroscopy

Hysteroscopic surgery has a number of well-defined indications and is the treatment of choice for polypectomy, myomectomy for intracavitary or submucous fibroids, adhesiolysis and metroplasty.

Indications of operative hysteroscopy:

Polypectomy
Endometrial sampling
Removal of intrauterine contraceptive device
Proximal fallopian tube cannulation
Asherman’s syndrome treatment
myomectomy
Division/resection of uterine septum
Endometrial resection or ablation


Complications of operative hysteroscopy
Early
Uterine perforation
Fluid overload
Haemorrhage
Gas embolism
Infection
Cervical trauma
Late
Intrauterine adhesions
Haematometra (after endometrial ablation)
Post ablation sterilization syndrome (after endometrial ablation)
Pregnancy (after endometrial ablation).
Cancer (after endometrial ablation

Diagnostic laparoscopy:

It is usually done as an inpatient procedure under general anesthesia.
Indications for diagnostic laparoscopy;
Acute or chronic pelvic pain
Ectopic pregnancy
Pelvic inflammatory disease (including TB)
Endometriosis
Adnexal torsion
Subfertility
Congenital pelvic abnormality
Abnormal pelvic scan
Unexplained pelvic mass
Staging for ovarian malignancy


Contraindications for diagnostic laparoscopy
Mechanical or paralytic bowel obstruction
Generalized peritonitis
Diaphragmatic hernia
Major intra-peritoneal hemorrhage (e.g. shock)
Severe cardio-respiratory disease
Massive obesity
Inflammatory bowel disease
Large abdominal mass
Advanced pregnancy
Multiple abdominal incisions
Irreducible external hernia

Complications of diagnostic laparoscopy:

Diagnostic laparoscopy is a safe procedure with published complication rates of 2–4 per 1000. Most complications occur during the set-up phase of the procedure when the abdomen is being instrumented (e.g. injury to the inferior epigastric vessels or major retroperitoneal vessels, bowel injury). Injury to retroperitoneal vessels usually requires immediate laparotomy, whereas bowel injury can be managed laparoscopically provided the perforation is small and there is minimal fecal soilin

Indications for operative laparoscopy:

Sterilization
Aspiration of ovarian cyst
Ovarian biopsy
Division of adhesions
Linear salpingotomy or salpingectomy for ectopic pregnancy
Ovarian cystectomy
Treatment of endometrioma
Salpingo-oophorectomy
Ovarian drilling with laser or diathermy for polycystic ovaries
Treatment of endometriosis
Myomectomy for pedunculated subserous fibroid
Laparoscopic utero-sacral nerve ablation (LUNA)
Laparoscopically assisted vaginal hysterectomy (LAVH)
Total laparoscopic hysterectomy
Myomectomy for intramural fibroids
Pelvic and aortic lymphadenectomy
Pelvic side wall and ureteric dissection
Presacral neurectomy
Incontinence procedures
Prolapse of genital organs procedures


Complications of laparoscopic surgery:
Intraoperative:
Bowel injury
Vascular injury
Bladder injury
Ureteric injury
Surgical emphysema
Anaesthetic complications

Post operative:

Unrecognized visceral or vascular injury
Venous thromboembolism
Infection
Port site hernia

Good Luck