Placenta accrete refers to an aberrant placental implantation as the anchoring villi invade to the myometrium, rather than being contained by decidual cells. There are many types of abnormally adherent placenta according to the degree of invasion of villi to the myometrium or to the serosal layer or extend beyond the uterus, but term placenta accretes collectively describe all of these [1].
The most important risk factors are placenta previa and prior uterine surgery, mainly cesarean section. So, the incidence of placenta accrete is increasing with the rising rate of cesarean section. It reaches about 25% to 50% incidence of placenta accrete in patients with placenta previa and prior cesarean delivery [2]. It is well noticed that the rate of placenta accrete in Egypt is high and increasing, yet there is no reported statistical data or documented study to evaluate the incidence of placenta accrete in Egypt . the most important actor for increasing rate of placenta accrete in Egypt is high rate of cesarean section in Egypt ,which also increasing [3].
Conservative management of the uterus turns into a surgical challenge in case of placenta accrete. Many surgeons tried many techniques including non-removal of the placenta and cut the cord short with postoperative methotrexate [4], resection of placental adhesion site also had been tried in selected cases [5], systematic devascularization of the uterus [6-8], transverse B lynch [9].
Stepwise technique had been developed in conservative management of placenta accrete ,and it passes through one step technique [10], two step technique [11] and reach to the simplest three step technique [12].
But placenta accrete is a potential emergency which couldn’t be managed by single technique or single approach. The authors think the condition mostly like postpartum hemorrhage which couldn’t be managed by single approach or single technique.
Also, conservative management of all cases is not possible and also non predictable, as every case has its own characteristics and its own randomly arranged placental vessels and the severity of adhesion cannot be diagnosed accurately except intraoperive.
So surgical management of placenta accrete couldn’t be managed by single surgical technique. And we suggest management begins with simple technique and if the condition is not controlled we proceed to another more complicated technique and so on to end with hysterectomy if not controlled.
Methods
Study design
Case series clinical study
Setting
This was conducted at tertiary care hospital (Department of Obstetrics and Gynecology of Tanta University- Egypt), in the period from October 1, 2017 to September 31, 2020.
Eligibility
This study was conducted on pregnant females, who were selected to suffer from placenta accrete either diagnosed antenatal by MRI or Doppler U/S or both. Or diagnosed intraoperative .and the patients were excluded if the patients:
• Had severe attack of bleeding before operation affecting patient’s general condition.
• Had previous four or more cesarean scars.
• was 40 years old or more
As in the last two conditions there is no need to expose the female to surgical hazard of conservation, and the safe surgical option for those patients is to perform hysterectomy without attempting to remove the placenta.
All patients selected for the study were counseled thoroughly about the procedure, its value and its hazards, written consent was taken from every patient.
If U/S and MRI suspected the presence of placenta accrete preoperative, then intraoperative the placenta was found to have normal adhesion to the uterine wall, this case was excluded.
Interventions
All patients in were submitted to the following surgical steps (each step doesn’t interfere with any other steps) in the following order, but they wouldn’t proceed from one step to the next step except if the previous step fails to control the condition.
Step 1:
1. Dissection of the bladder from anterior wall of lower uterine segment as much as possible
2. Transverse incision of the uterus at a higher level at upper border of placenta
3. Before fetal extraction ecbolic are administrated as oxytocin (syntocinon, Novartis) 20 IU i.e. infusion as a direct dose, methergin 0.1mg as maximum dose and rectal misoprostol up to 100 micrograms.
4. Extraction of the baby
5. Bilateral uterine artery ligation below the level of uterine incision
6. Removal of placenta, if there is line of cleavage total placenta removed or either piece meal according to the degree of placental invasion
7. Haemostatic quadruple sutures at lower uterine segment as many as the uterine wall could stand.
Step 2:
If step 1 failed known by difficult in removal of placental tissue or by still uncontrolled bleeding:
1. If the lower uterine segment is long enough, excision of wide part of lower uterine segment which may hold greater part of invaded placenta (segmental uterine wall resection)
Step 3:
If step 2 fails known by lower uterine segment is too short for application of step 2, or still uncontrolled bleeding:
1. Second bilateral uterine artery ligation below level of uterine incision and below level of first uterine artery ligature
2. Third Bilateral uterine artery ligation above the level of uterine incision.
3. Over sewing of placenta bed with sutures from outside the uterine cavity ,and other sutures may be taken intracavitary at the placental bed to control bleeding.
Step 4:
If step 3 failed known by still uncontrolled bleeding:
1. Insertion of intrauterine pack inside uterus with its lower end passing through opened cervix, the pack must be impacted in lower part of the uterus to ensure compression of placental bed
2. Closure of uterine incision only
3. observe the amount of vaginal bleeding, fundal level and vital measures of patient
Step 5:
If step 4 failed known by excessive vaginal bleeding, rising Fundal level or unsure vital measures for patient:
1. Total abdominal hysterectomy without oophorectomy after vaginal removal of the pack
Methods
All patients’ demographic data were taken, operation time (the duration of step 1 measured from the beginning of dissection of the bladder till the end of the step ether failed or succeeded ,then the duration of next steps measured later on), preoperative HB level, immediate postoperative HB level ,HB difference ,units of blood used intraoperative ,any surgical complication, any postoperative complications and postoperative hospital stay.
Outcomes of Study
primary outcomes include: (a) operation time (b) amount of bleeding known by HB difference
The secondary outcomes include: (a) amount of units of blood needed intraoperative for transfusion (b) intraoperative complications like (bladder injury, uterine atony) hysterectomy wasn’t considered as a complication as it was a part of the surgical steps, step 5) (c) postoperative complications like sepsis, need of ICU. (d) Duration of postoperative hospital stay.
Ethical Approval and Clinical Trial Registration
This study was approved by local ethical committee of Tanta University before the start of this study and registered on Pan African Clinical Trials Registry (pactr) under the code of PACTR201712002774233 All patients were informed about study design, interventions, and risks. All patients signed written consent. Privacy and security were maintained all over the duration of study.
There were no unexpected risks during the course of research.
Results
This study enrolled 74 patients who were assessed for eligibility. After selection according to inclusion and exclusion criteria for eligibility.
The mean age of selected patients was 29.44 and mean gestational age at time of cesarean section was 36.5 weeks gestation ,the whole demographic data of enrolled patients were demonstrated in Table 1.
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