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Laparoscopic Tubal Surgery
https://t.me/med1917
andLaparoscopic Management ofEctopic Pregnancy
AdebayoAladeAdewole, OluseyiAyoolaAsaolu, andAbdulhakeemOlajideAkintobi
1 Introduction
The fallopian tube is a critical component of the female reproductive organ that conveys the egg and the fertilized ovum to the uterine cavity. It can acquire diseases that could affect both its anatomical and physiological functions. This condition consti­tutes a signicant cause of infertility, most especially in Africa, where a high premium is on childbearing, and the inability to procreate can be a signicant family challenge. Fallopian tubal disease is respon­sible for 25–35% of female infertility cases in devel­oped countries [1, 2]. In Nigeria, tubal factors contribute about 42–63.6% due to infertility [35]. The struggle to conserve these anatomical and phys­iological functions in managing various tubal dis­eases has posed tremendous challenges to the gynaecologist. Historically, tubal surgery was done as an open procedure, and this gradually evolved into microsurgery with gentle tissue handling and, more recently, laparoscopic tubal surgery [2].
A. A. Adewole (*) Fertility and Minimal Access Surgery Unit, Department of Obstetrics and Gynaecology, Federal Medical Centre Lokoja, Lokoja, Kogi State, Nigeria e-mail: adebayo.adewole@npmcn.edu.ng
O. A. Asaolu Department of Obstetrics and Gynaecology, Wuse District Hospital, Abuja, Nigeria
A. O. Akintobi Department of Obstetrics and Gynaecology, Asokoro District Hospital, Abuja, Nigeria
2 Advances in Laparoscopic Tubal
Surgery
Dr. Kurt Semm, a German gynaecologist who specialized in infertility, was perhaps the most inuential early advocate of modern operative laparoscopy. He developed laparoscopic tech­niques for ovarian cystectomy, myomectomy, treatment of ectopic pregnancy, appendectomy and hysterectomy. Despite Dr. Semm and other remarkable pioneers’ work, gynaecologic lapa­roscopy continued to be used primarily for diag­nosis and tubal ligations into the 1980s [2, 6].
The rst laparoscopic tubal surgery performed was the bilateral tubal ligation as a form of con­traception. Presently, it is indeed the most com­mon method of female surgical contraception worldwide. It has evolved from the use of the monopolar technique by Palmer and Steptoe to the use of the bipolar technique by Rioux and Kleppinger and currently Silastic bands and spring clips as occlusive methods of sterilization for easy reversal [2, 6, 7]. Tubal surgery has grad- ually evolved to include reversal of tubal steril­ization, tubal blockage operations and tubal ectopic pregnancy. These procedures include mbrioplasty, neosalpingostomy, laparoscopi­cally guided hysteroscopic tubal cannulation, sal­pingectomy, salpingotomy/salpingostomy and milking of tubal pregnancy [2].
© The Editor(s) (if applicable) and The Author(s), under exclusive license to Springer Nature Switzerland AG 2022 J. E. Okohue et al. (eds.), Gynaecological Endoscopic Surgery,
https://doi.org/10.1007/978-3-030-86768-3_16
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3 Brief Anatomy oftheAdnexa
andtheLaparoscopic Perspective
There are two fallopian tubes within which fertil­ization usually occurs close to its ovarian end (Fig.1). Each tube is 10–12.5cm long, pursuing a tortuous course along the broad ligament’s free
Fallopian Tube
Body of the Uterus
Lumen
Cervix
Vagina
Fig. 1 Anatomy of the fallopian tube. (Source: Internet.
https://histologyblog.com/2013/07/13/histoquarterly­fallopian- tube/; Permission to reuse the image: https:// commons.wikimedia.org/wiki/File:Uterine_anatomy.jpg)
Endometrium
Myometrium
Ovar
border. Components of each fallopian tube are the intramural (interstitial or uterine segment), the lumen of which continues laterally, into the lumen of the isthmus, and medially into the uter­ine cavity. The isthmic portion continues laterally with the ampulla, which eventually terminates at the infundibulum with nger-like mbriae [810].
Major blood supplies to the fallopian tubes are from the ovarian and uterine arteries (Fig. 2). Veins leaving the tubes enter the broad ligament parallel with the arteries and drain to the ovary’s pampiniform plexus and the uterine veins. Lymphatic drainage is to the lateral aortic and pre-aortic nodes [810]. The isthmus drains into the supercial inguinal nodes. The fallopian tubes derive their nerve supply from both sympa­thetic and parasympathetic nerve bres. The sympathetic bres are derived from the hypogas­tric plexus. The parasympathetic bres are arranged such that the lateral part of the tube gets its supply via the vagal bres, while the medial part of the tube gets its supply via the pelvic splanchnic bres. Afferent bres enter the spinal
Fig. 2 Blood supply of the fallopian tube
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Laparoscopic Tubal Surgery andLaparoscopic Management ofEctopic Pregnancy
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Fig. 3 (a, b) Histology of the fallopian tube
ligaments anteriorly and the ovarian ligaments posteriorly, extend medially from the cornual end of the uterus on both sides and curve out laterally towards the pelvic sidewall running above the ovary and medial to the infundibulopelvic liga­ment and arch partially over the ovary with their mbriated ends [710].
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4 Types ofLaparoscopic Tubal
Surgery
Fig. 4 Laparoscopic overview of the pelvic anatomy
cord at the level of T11 to L2 dorsal nerve roots [810]. Each fallopian tube comprises the outer muscular coat consisting of an incomplete outer longitudinal layer and an inner circular layer (Fig.3a, b).
The mucosal folds are covered by columnar epithelium, which bears two types of cells, the motile cilia-bearing cells predominantly towards the infundibulum and glandular secretory cells in the isthmus and intramural portion [810].
Laparoscopically, the fallopian tube is found slightly above and behind the round ligament and sometimes requires some uterine or round liga­ment manipulations to bring it into focus (Fig.4). The fallopian tubes are found between the round
These include bilateral tubal ligation and reversal of tubal ligation (tubo-tubal anastomosis, tubo­uterine anastomosis, ampullary salpingostomy or mbrioplasty). Others are tubal blockage opera­tions (mbrioplasty, neosalpingostomy/salpin­gostomy, salpingectomy, laparoscopically guided hysteroscopic tubal recanalization) and opera­tions for ectopic pregnancy (salpingectomy, sal­pingostomy, salpingotomy, mbrial milking, cornuostomy, excision of the rudimentary horn, ovariectomy and hysteroscopic resection of cor­nual/interstitial ectopic pregnancy under laparo­scopic guidance).
Generally, for most laparoscopic tubal sur­geries, the patient is usually placed in a Lloyd­Davies position with one assistant between the legs of the patient and a 15°–20° head-down tilt to reect bowels away from the pelvic cavity to
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enhance the visibility of the tubes as well as other pelvic organs and to reduce bowel injury. Various gynaecologists have adopted different positions such as the steep Trendelenburg, lithotomy and supine position with a slight head-down tilt for some. However, one should learn to adopt the position that gives the fallo­pian tubes the best exposure while performing any tubal surgery.
4.1 Laparoscopic Bilateral Tubal Ligation
Bilateral tubal ligation is performed when there is either desire for permanent contraception or to overcome the detrimental effect of hydrosalpinges on IVF pregnancy rates in patients who are not candidates for corrective tubal surgery. However, benets have grown to include improved embryo quality following invitro fertilization. The meth­ods of tubal ligation are broadly divided into destructive methods (electrocautery, e.g. monopo­lar or bipolar coagulation; cutting, e.g. mbriec­tomy, Pomeroy’s procedure, or partial salpingectomy) and occlusive methods (Filshie, Falope, Hulka clips) [7, 912].
The bilateral tubal ligation procedure is usu­ally performed under general anaesthesia (GA) and typically takes about 20–30min. It is better performed after 6 weeks postpartum (interval ligation) on an outpatient basis because of the risks associated with immediate postpartum tubal ligation with the uterus approximately 20weeks’ size, making it prone to injury during insertion of Veress and laparoscopic trocar and cannula.
postpartum period, luteal phase of the men­strual cycle because of medico-legal reason where fertilization could have occurred, dia­phragmatic hernia, severe heart or lung disease and any contraindication to laparoscopic surgery.
4.2 Laparoscopic Tubal Ligation Procedures
4.2.1 Procedures
Place the patient in a dorsal lithotomy position under GA. Insert the uterine manipulator and safely obtain laparoscopic access to the perito­neal cavity. Create pneumoperitoneum in the usual manner for better visibility and access to the pelvic organs. Inspect the abdomen and pel­vis. Several techniques could be used: single port, double ports, single incision two ports, elec­trocautery or use of bands, rings and clips. Identify the whole length of the fallopian tubes and the round ligament. Insert accessory port(s) under vision as necessary for hand instruments, except when a single-port technique is being used. Carry out tubal ligation based on the tech­niques below:
(a) Single-port technique: This is usually indi-
cated in tubal ligation using the Filshie clip or Falope ring with the aid of a Laprocator (Fig.5).
(b) Double-port technique: This is performed
using a primary 10-, 7- or 5-mm port and a secondary supra-pubic 7-mm port for the clip applicator.
4.1.1 Contraindications
These include concerns about patient’s deci­sion for a permanent method of sterilization, pregnancy, other conditions requiring hyster­ectomy or bilateral salpingo-oophorectomy, morbid obesity, previous multiple abdominal surgeries with adhesion formation, immediate
Fig. 5 Laprocator for single-port technique
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(c) Single-incision two-port technique: This is
performed with the aid of two 5-mm trocars inserted in a 10-mm supra- or infra-umbilical incision (Fig.6) [12].
(d) Unipolar electrocautery: No longer
recommended.
(e) Bipolar electrocautery: Grasp the entire
width of the fallopian tube and gently lift it away from surrounding structures to avoid thermal injury. Use a coagulation waveform with a power of at least 25W against a 100-V
Fig. 6 Single-incision two-port laparoscopic tubal liga­tion. (Permission obtained from Asst. Professor Nicel Tasdemir (16 June 2020) [12])
load to desiccate a 3-cm segment of the fal­lopian tube. The fallopian tube is grasped with bipolar forceps such as Rubin’s/har­monic/Thunderbeat at the narrow isthmic end of the tube, and the forceps are activated to coagulate the tubal segment. The activation of the bipolar forceps should be intermittent, and the jaws slightly opened in between acti­vation to avoid sticking together of the jaw of the bipolar forceps with the tube. Coagulation at about three points and division of the tube in between the coagulated area can also be done. Avoid desiccating the tube 2cm closer to the uterine cornu to avoid utero-tubal s­tula and thermal vascular injury to the ova­ries. However, tubal recanalization risk is higher in single-point coagulation compared with excision of the tubal segment following three-point coagulation.
(f) Falope ring: The Falope ring is loaded into
the ring applicator, which is introduced through the ring applicator aperture of the Laprocator (single-port technique) or through another 7-mm suprapubic port (Fig.7a–c). The fallopian tube is located and grasped with the aid of the jaws of the Falope ring applicator. This step is carried out at the
Fig. 7 (a) Extended tip Falope ring applicator loaded with one ring. (b) Loaded with one ring. (c) Loaded with two rings
a
b
c
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narrow isthmic end of the tube, about 1–2cm from the uterus’ cornual end. The tube is drawn up into the applicator’s cylinder, and the applicator is fully red to apply either one or two silicon rings to the grasped seg­ment of the fallopian tube. The grasped seg­ment is released, and the same procedure is repeated on the contralateral side. Blanching of the tubal segment above the clip is an indi­cation of total occlusion due to ischaemia.
(g) Spring clip: Manipulate the uterus to
straighten out the fallopian tube (Figs.8 and
9). Load the clip into the applicator exter-
nally and introduce it into the abdomen in a partially closed position. Carefully place the spring clip perpendicularly to the isthmic portion of the fallopian tube, ensuring that the clip’s lower edge can be visualized in the mesosalpinx. Ensure that the clip is com­pletely closed and locked in place.
(h) Filshie clip or Hulka-Clemens clip: The
application is like that of the spring clip (Figs.8 and 9). However, once the applica­tor’s end is in the abdomen, release the pres­sure on the handle to open the clip before placing it perpendicularly to the fallopian tube at the narrow isthmic end. Blanching between the two clips is also an indication of total occlusion at this point.
(i) Pomeroy’s procedure (partial salpingec-
tomy): In this method, two lateral 5-mm ports are required. Extracorporeal Roeder’s knot is made with Vicryl suture externally and inserted through an accessory port to tie the base of a loop of fallopian tubes, or Endoloop is introduced for the same purpose. The loop is placed over the isthmic portion of the fal­lopian tube and gently pulled using a laparo­scopic grasper to form a loop. The suture is navigated to the base of the loop and pulled to tighten the knot. Laparoscopic scissors are used to cut the suture and the looped portion of the fallopian tube. At least a minimum of
A. A. Adewole et al.
a
b
c
Fig. 8 (a–c) Images showing stepwise laparoscopic clip application using Hulka-Clemens clip
a 1-cm segment of the fallopian tube is removed to reduce the failure rate (Fig.9).
The same procedure is repeated on the contralateral tube. Haemostasis is ensured, and the accessory ports and uterine manipu­lator are removed under vision. The primary port is also removed, and the wound is closed appropriately.
4.2.2 Complications
Apart from complications related to laparoscopy, others include ligation of the round ligament instead of the fallopian tube, thermal injury, fail­ure, regret, clip or ring complication, ectopic pregnancy, tubo-peritoneal stula, menstrual irregularities, conversion to laparotomy, hyster­ectomy and mortality.
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Fig. 9 (a, b) Overview of all occlusive and destructive methods
a
Fallopian
tubes
Site of tubal
ligation
Cut and tied
Blocked using a
plastic band
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Sealed using
cautery
Blocked using
a clip
b
a
b
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5 Laparoscopic Tubal Ligation
Reversal
This procedure is also called tubal re- anastomosis or recanalization. Tubal ligation is meant to be a permanent procedure to achieve sterilization in a woman, but certain circumstances may cause women to regret their decision and ask for a reversal of the procedure. These include events such as the death of a child, divorce, death of spouse or remarriage and desire for sons. Regret is also more in immediate postpartum steriliza­tion, where the decision for tubal sterilization may have been made in haste, without really con­sidering the implications. Among those who express regret after sterilization, 14.3–30% have been reported to ask for tubal reversal, with only
1.1% eventually operated [2, 1316]. The main risk following a tubal ligation rever-
sal procedure is the possibility of an ectopic pregnancy, rising to 6.7% [2, 1316]. Pregnancy rates following tubal ligation reversal after steril­ization are usually quite good and better than tubal surgery (salpingostomy/mbrioplasty) for occlusive distal tubal disease from pelvic infec­tion and endometriosis [2, 1316]. However, the success of ligation reversal or chances of preg­nancy afterward will depend on certain factors (Table1).
Macro-surgical tubal repair technique has
become obsolete as most tubal recanalization operations are performed with the aid of magni­cation (operating microscopes or loupes), which ensures accurate apposition of anatomic layers.
Table 1 Showing the determining factors for successful tubal reversal
Factor Best success Worst success Women’s age <35yo >35yo Type of tubal ligation Clip, band Tie, cut, burn Years since tubal
ligation Final tube length >6cm <6cm Fimbria Healthy Diseased Ovulation Normal Subnormal Semen analysis Normal Subnormal Weight <175 lb >175lb Pelvic adhesions Absent Present
Source:
treatments/tubal- ligation- reversal/
https://www.fertilitymemphis.com/fertility-
<10years >10 years
The use of ne sutures (6-0, 4-0), gentle handling of tissues and good haemostasis produced impressive outcomes in post-surgery pregnancy rates. Laparoscopy has, however, created an improvement over macro-surgical techniques by virtue of the magnication it affords, enabling the use of microsurgical instruments with ne, non-reactive sutures, making its outcome like that of microsurgical technique [2, 11, 1316].
Laparoscopic tubal sterilization reversal is usually performed under general anaesthesia. Benets include shorter operation hours, few hours of hospital stay, quicker recovery, less tis­sue damage and bleeding. It requires laparo­scopic surgeons specially trained in the procedure [2, 11, 1316].
5.1 Procedure
Laparoscopic tubal anastomosis applies the con­ventional microsurgery principle used in lapa­rotomy. Under GA, diagnostic hysteroscopy is performed to exclude any intrauterine pathol­ogy, and a uterine manipulator with space for dye test is then placed. Pneumoperitoneum is created in the usual manner, and the primary port is placed. The procedure requires a mini­mum of three accessory ports for effective and gentle tissue manipulation. A manipulating probe or suction- irrigation is used to position the tube and apply traction. A laparoscopic Babcock’s clamp can also be used, but this can tear the mesosalpinx and lacerate vessels. The mbrial end should be avoided as much as pos­sible because it is very vascular and can bleed with little provocation.
If desired, an injection of 2–5 mL of dilute vasopressin (5mL diluted with 20mL of normal saline, 1 in 10,000 dilutions) is instilled in the mesosalpinx to reduce bleeding and raise a weal that helps to dene tissue plains easily. Examine the obstruction area (ligation, burn, ring or clip) and remove the occlusion. Excise the proximal and distal segment of the fallopian tubes perpen­dicularly 0.5–2cm away from the ligated scar to remove the brosed and damaged portion of the tube depending on the method of occlusion with the aid of sharp ne laparoscopic scissors or uni-
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Fig. 10 (a, b) Tubal re-anastomosis as described by Sotrel G [2]
a
b
polar ovarian drilling needle in cut mode at 10W which can also be used to maintain haemostasis. The tubal lumen is identied on both ends. Hysteroscopically guided backward catheteriza­tion of the proximal tubal stump and intubation of the prepared distal stump with a Teon cathe­ter (Cook, Charenton, France) of 1-mm diameter may be performed. The mesosalpinx is approxi­mated using a 6-0 or 4-0 absorbable suture. This helps to reduce the traction on the two ends of the tube during the repair. There are different tech­niques, but the most preferred is the ‘four-stitch technique’. Sutures are placed on the muscular
layer, and the inner mucosal layer is avoided. Re-anastomosis of the tubal ends starts at 6 o’clock using the same ne absorbable suture following outer to inner and inner to outer direc­tions, to place the knots outside the lumen and approximate the two ends with the mucosa well. Four throws are made, and the same steps are performed at positions 3 o’clock, 9 o’clock and 12 o’clock, respectively. Methylene blue dye is injected to conrm tubal patency and ensure no leakage at the anastomosis site. A tubal splint or glue may be applied to the site if necessary (Fig.10a, b).
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5.2 Types ofTubal Reversal or Anastomosis
(a) Tubo-tubal anastomosis
Tubal ends are joined as described above
(Fig.10).
(b) Tubo-uterine implantation
This procedure is performed when there is a desire for fertility following Essure or Adiana methods of sterilization or complica­tion of uteroperitoneal stula following tubal sterilization. The intrauterine part of the tube, the scarred portion of the uterus and the blocked tubal ends must be removed (Fig.11). The healthy portion of the tube is then implanted into a newly created opening in the uterus using the technique described above.
(c) Ampullary salpingostomy (mbrioplasty)
This operation is necessary when the m­brial portion of the tubes has been removed during tubal sterilization. Reversal involves
opening the tubal end and folding the inner lining outwards and xing it with ne sutures or coagulation so that it does not close back again.
5.2.1 Procedure
The four-port technique is used for this procedure. Under GA, pneumoperitoneum is created in the usual manner, and a diagnostic laparoscopy is done, most especially to identify adhesions between the fallopian tubes, ovaries and uterus. A uterine manip­ulator helps manipulate the uterus, giving traction, affording a good view of the fallopian tube.
Adhesiolysis between the fallopian tube, ovary and round ligament is done to free the fallopian tube. Care must be taken not to de- vascularize the ovary, and the use of a low-energy source is prefer­able. A dye test is done with a methylene blue solution instilled through the uterine manipulator. The dye helps to distend the blocked end of the fallopian tube, clearly highlighting the hydrosal-
Fig. 11 Tubo-cornual anastomosis a to d. or tubo-uterine anastomosis as described by Sotrel G
ab