SummarySince the introduction of the Doppler effect into clinical practice for the diagnosis of vascular and cardiac diseases, the technology has developed considerably. From the pencil probe (CW Doppler) to black and white duplex, PW Doppler, which was incorporated into a B-mode image, to colour duplex ultrasound (CDU) and beyond to more recent developments, such as power duplex and B-mode flow imaging. These terms are frequently confused with each other and medical reports refer to CDU as “venous Doppler” or “ultrasound of the leg veins”. This short outline attempts to clarify each term briefly in words and images.

Background: Abnormally invasive placenta is defined as abnormal adhesion to the implantation site, it is a spectrum of abnormal placentation that leads to obstetric hemorrhage, knowledge of risk factors and ultrasound evaluation is what allows antenatal diagnosis allowing transfer to specialized centers, surgical planning, and modifying the maternal outcome, causing a decrease in maternal morbidity and mortality. Objective: To describe the main ultrasound signs found in patients diagnosed with abnormally invasive placenta. Methodology: Cross-sectional, descriptive, retrospective study, carried out through a bibliographic review in the databases of PubMed, Scholar.google.com, SciELO, MEDLINE, of articles published in English and Spanish between 1992 and 2020. The following methods were used. Keywords Mesh (Medical Subject Headings): placenta accreta; previous placenta; prenatal diagnosis; abnormally invasive placenta; placenta percreta; abnormally attached placenta. Inclusion criteria: case report-type articles that include pregnant patients with placenta accreta, associated risk factors and diagnostic evaluation sections, as well as a systematic review and meta-analysis on the prenatal diagnosis of placenta accreta, whose results were analyzed by analysis of frequency. Results: From the reviewed studies, it was observed that 66.7% of the patients had cesarean section as the predominant uterine surgery, ultrasound findings such as the loss of the hypoechoic zone in 35.7% of the cases; the presence of placental lacunae in 28.6%; myometrial thinning in 16.7%; as well as disruption of the uterus-bladder interface in 7.1%, in 54.8% intraoperative diagnosis was made. Conclusions: Placental accreta is an increasingly frequent pathology, the incessant search for alternatives to reduce maternal death, the ultrasound characterization of the most frequent signs help timely prenatal detection

Aim: To determine the correlation of the red cell distribution width values with pre-eclampsia and pre-eclampsia with severity criteria. Materials and methods: Cross-sectional, prospective study of patients who met the inclusion criteria in the period from August 2019 to August 2020. Statistical analysis was performed using Student's t test and Spearman's correlation to calculate the dependence between the non-parametric variables, the value of p<0.05 was considered statistically significant. Results: 9 patients with pre-eclampsia and 30 pre-eclampsia were obtained with severity criteria. There was no statistical difference when comparing the RDW of patients with pre-eclampsia and pre-eclampsia with severity criteria (p=0.226), in patients with systolic blood pressure values ≥160mmHg there was an increase in RDW levels (p=0.042) Objective: To determine the correlation of erythrocyte distribution width values with pre-eclampsia and pre-eclampsia with severity criteria. Conclusions: There is a significant relationship between increased RDW and systolic blood pressure values ≥160mmHg.

Aim: To determine the correlation of the red cell distribution width values with pre-eclampsia and pre-eclampsia with severity criteria. Materials and methods: Cross-sectional, prospective study of patients who met the inclusion criteria in the period from August 2019 to August 2020. Statistical analysis was performed using Student's t test and Spearman's correlation to calculate the dependence between the non-parametric variables, the value of p<0.05 was considered statistically significant. Results: 9 patients with pre-eclampsia and 30 pre-eclampsia were obtained with severity criteria. There was no statistical difference when comparing the RDW of patients with pre-eclampsia and pre-eclampsia with severity criteria (p=0.226), in patients with systolic blood pressure values ≥160mmHg there was an increase in RDW levels (p=0.042) Objective: To determine the correlation of erythrocyte distribution width values with pre-eclampsia and pre-eclampsia with severity criteria. Conclusions: There is a significant relationship between increased RDW and systolic blood pressure values ≥160mmHg.

Ovarian hyperandrogenism associated oligoanovulacion is the most common cause of hirsutism, acne and menstrual disorders in adolescents pathophysiology of polycystic ovary syndrome (PCOS) involves starting interactions of genetic, epigenetic changes, primary ovarian abnormalities, neuroendocrine disturbances , hyperinsulinemia, insulin resistance, obesity, international companies have reached a consensus in the persistent unexplained hyperandrogenic anovulation using standards applied to their age and stage are considered suitable for polycystic ovary syndrome in adolescents diagnostic criteria. It is the most common endocrine disorder heterogeneous in women of reproductive age.