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1.
Nat Food ; 2(10): 819-827, 2021 Oct.
Article in English | MEDLINE | ID: mdl-37117978

ABSTRACT

The effective utilization of natural variation has become essential in addressing the challenges that climate change and population growth pose to global food security. Currently adopted protracted approaches to introgress exotic alleles into elite cultivars need substantial transformation. Here, through a strategic three-way crossing scheme among diverse exotics and the best historical elites (exotic/elite1//elite2), 2,867 pre-breeding lines were developed, genotyped and screened for multiple agronomic traits in four mega-environments. A meta-genome-wide association study, selective sweeps and haplotype-block-based analyses unveiled selection footprints in the genomes of pre-breeding lines as well as exotic-specific associations with agronomic traits. A simulation with a neutrality assumption demonstrated that many pre-breeding lines had significant exotic contributions despite substantial selection bias towards elite genomes. National breeding programmes worldwide have adopted 95 lines for germplasm enhancement, and 7 additional lines are being advanced in varietal release trials. This study presents a great leap forwards in the mobilization of GenBank variation to the breeding pipelines.

2.
Arch Gynecol Obstet ; 300(1): 59-66, 2019 07.
Article in English | MEDLINE | ID: mdl-31044300

ABSTRACT

BACKGROUND: While there is an increasing interest in incorporating ultrasound in undergraduate medical education and the use of student tutors in conveying this medical skill to assist faculty members, little is known about undergraduate ultrasound teaching in obstetrics and gynecology. METHODS: After a 3 week training of the student tutors, the student tutors joined an undergraduate ultrasound educational program to teach practical round students. After being certified, the student tutors organized a pre-test, gave a presentation about ultrasound, and then supervised the hands on ultrasound course under faculty staff supervision for round students. Finally, the practical round students had to answer a post-test with image recognition. The practical round students had to evaluate the course using a Likert scale. RESULTS: 111 students joined this ultrasound course. The objective theoretical and practical multiple-choice questions' (MCQ) test showed a statistically significant improvement (50 vs. 90%, p < 0.05). The practical round students expressed a high acceptance (Likert 1.7) and subjective medical skill learning (Likert 1.8). The students also positively graded the student tutors (Likert 1.3). CONCLUSION: Student tutor-based undergraduate obstetrical and gynecological ultrasound course is a useful method to teach a medical skill and is well accepted by students.


Subject(s)
Curriculum/statistics & numerical data , Education, Medical, Undergraduate/methods , Obstetrics/methods , Students, Medical/statistics & numerical data , Ultrasonography/methods , Female , Humans , Pregnancy
3.
Geburtshilfe Frauenheilkd ; 77(1): 45-51, 2017 Jan.
Article in English | MEDLINE | ID: mdl-28190888

ABSTRACT

Introduction Minimally invasive operative techniques are being used increasingly in gynaecological surgery. The expansion of the laparoscopic operation spectrum is in part the result of improved imaging. This study investigates the practical advantages of using 3D cameras in routine surgical practice. Materials and Methods Two different 3-dimensional camera systems were compared with a 2-dimensional HD system; the operating surgeon's experiences were documented immediately postoperatively using a questionnaire. Results Significant advantages were reported for suturing and cutting of anatomical structures when using the 3D compared to 2D camera systems. There was only a slight advantage for coagulating. The use of 3D cameras significantly improved the general operative visibility and in particular the representation of spacial depth compared to 2-dimensional images. There was not a significant advantage for image width. Depiction of adhesions and retroperitoneal neural structures was significantly improved by the stereoscopic cameras, though this did not apply to blood vessels, ureter, uterus or ovaries. Conclusion 3-dimensional cameras were particularly advantageous for the depiction of fine anatomical structures due to improved spacial depth representation compared to 2D systems. 3D cameras provide the operating surgeon with a monitor image that more closely resembles actual anatomy, thus simplifying laparoscopic procedures.

4.
Arch Gynecol Obstet ; 295(3): 641-649, 2017 Mar.
Article in English | MEDLINE | ID: mdl-27896472

ABSTRACT

PURPOSE: The high prevalence of Pelvic Organ Prolapse (POP) along with the demographic trend of the ageing population raises the value of sacropexy in the treatment of POP. Thus, efforts to decrease risks associated with this procedure have the potential for public health impact. We examined the perioperative morbidity of laparoscopic sacropexy regarding the surgical access and compared it with the morbidity of one of the most common gynecological procedure, the laparoscopic hysterectomy. Our aim was to prove the safety of laparoscopic sacropexy. METHODS: A retrospective evaluation of 80 consecutive laparoscopic sacropexies performed from Sept. 2012 until Oct. 2014 and 126 laparoscopic hysterectomies for a benign indication were undertaken. We assessed the anatomical outcome and the intra- and postoperative complications using the classification system according to Clavien-Dindo (CD). RESULTS: Apical success rate after sacropexy was 100% and global success rate was 95% (POP-Q stage ≤1). The decline in hemoglobin was low in both groups and showed no statistically significant differences. Both operative time (P < 0.001) and the duration of hospitalization (P < 0.001) were longer in case of a sacropexy. Although overall intraoperative complications seemed more frequent during a sacropexy, differences were not statistically significant. Both early and late postoperative complications showed a higher rate of mild complications (CD-I/II) and a lower rate of severe complications (CD-IIIa/IIIb) after a sacropexy. The differences were not statistically significant. CONCLUSION: The laparoscopic sacropexy represents a safe procedure with good anatomical outcome. Despite higher technical severity, it doesn't seem to bare higher risks for perioperative morbidity than the laparoscopic hysterectomy does.


Subject(s)
Gynecologic Surgical Procedures/adverse effects , Hysterectomy/adverse effects , Laparoscopy/adverse effects , Pelvic Organ Prolapse/surgery , Adult , Aged , Female , Humans , Intraoperative Complications/epidemiology , Middle Aged , Operative Time , Postoperative Complications/epidemiology , Retrospective Studies
5.
Geburtshilfe Frauenheilkd ; 76(4): 377-382, 2016 Apr.
Article in English | MEDLINE | ID: mdl-27134292

ABSTRACT

This review article presents recent evidence on early pregnancy loss and ectopic pregnancy. In the light of recent evidence, the ß-hCG discriminatory zone may be extended in clinically stable cases without evidence of bleeding. A possible cut-off is 4300 mIU/ml, which corresponds to when a sonographer should detect an intrauterine pregnancy. Embryonic demise can be confirmed when a transvaginal ultrasound finding shows no heartbeat in an embryo of more than 7 mm CRL, no embryo in a gestational sac having a mean sac diameter of more than 25 mm, or no appearance of an embryo within 7-10 days after the primary examination. These are considered definitive signs of embryonic demise. Suggestive signs of embryonic demise require closer monitoring of the pregnancy.

6.
Geburtshilfe Frauenheilkd ; 76(4): 383-389, 2016 Apr.
Article in English | MEDLINE | ID: mdl-27134293

ABSTRACT

Introduction: The aim of this study was to assess whether the preoperative decision-making process might influence treatment success in premenopausal women undergoing hysterectomy for benign uterine pathologies Materials and Methods: All premenopausal women treated with hysterectomy for benign uterine pathologies between April 2011 and June 2013 at a tertiary university center were enrolled in this prospective observational cohort study. Five parameters of the preoperative decision-making process were assessed upon their correlation with postoperative quality of life, sexual function and patients' satisfaction. These outcome measures were assessed for the pre- and postoperative (six months after surgery) status using two validated questionnaires (EQ-5D and "female sexual function index" (FSFI). Patients' satisfaction with the postoperative outcome was assessed with a self-developed questionnaire. Results: 255 of 402 (63 %) patients completed the study. A correlation between the co-variables "interval between first counseling and decision to surgery", "subjectively perceived quality of the preoperative counseling" and "certainty in the decision for the intervention" and postoperative outcomes were found. The co-variables "person mainly responsible for election of hysterectomy mode" and "discussion of decision for surgery with others" showed no influence on postoperative patients-reported outcomes. Conclusion: We found a correlation between certain parameters of the preoperative decision-making process and postoperative patient-reported sexual function, quality of life and patients' satisfaction in premenopausal women undergoing hysterectomy for benign uterine pathologies. An optimization of these factors could contribute to an improvement in treatment outcomes.

7.
Arch Gynecol Obstet ; 294(3): 479-85, 2016 09.
Article in English | MEDLINE | ID: mdl-26742729

ABSTRACT

PURPOSE: Teaching ultrasound procedures to undergraduates has recently been proposed to improve the quality of medical education. We address the impact of applying standardized ultrasound teaching to our undergraduates. METHODS: Medical students received an additional theoretical and practical course involving hands-on ultrasound screening during their mandatory practical training week in obstetrics and gynecology. The students' theoretical knowledge and fetal image recognition skills were tested before and after the course. After the course, the students were asked to answer a course evaluation questionnaire. To standardize the teaching procedure, we used Peyton's 4-Step Approach to teach the skills needed for a German Society of Ultrasound in Medicine Level 1 ultrasound examiner. RESULTS: The multiple-choice question scores after the course showed statistically significant improvement (50 vs. 80 %; P < 0.001). The questionnaire revealed that students were satisfied with the course, felt that it increased their ultrasound knowledge, and indicated that they wanted more sonographic hands-on training in both obstetrics and gynecology and other medical fields. CONCLUSION: Using practical, hands-on medical teaching is an emerging method for undergraduate education that should be further evaluated, standardized, and developed.


Subject(s)
Education, Medical, Undergraduate , Gynecology/education , Obstetrics/education , Ultrasonography, Prenatal , Curriculum , Female , Humans , Pregnancy , Teaching
8.
Biomed Res Int ; 2016: 5184595, 2016.
Article in English | MEDLINE | ID: mdl-28070510

ABSTRACT

Introduction. Pelvic organ prolapse (POP) and urinary incontinence (UI) have increasing prevalence in the elderly population. The aim of this study was to compare the comorbidities of these procedures between <70 y/o and ≥70 y/o patients. Materials and Methods. In our retrospective study over a period of 2.5 years, 407 patients had received an urogynecological procedure. All patients with POP were treated by reconstructive surgery. Complications were reported using the standardized classification of Clavien-Dindo (CD). The study can be assigned to stage 2b Exploration IDEAL (Idea, Development, Exploration, Assessment, Long-term study)-system of surgical innovation. Results. Operation time, blood loss, and intraoperative complications have not been more frequent in the elderly, whereas hospital stay was significantly longer in ≥70 y/o patients. Regarding postoperative complications, we noticed that ≥70 y/o patients had an almost threefold risk to develop mild early postoperative complications compared to younger patients (OR: 2.86; 95% CI: 1.76-4.66). On the contrary, major complications were not more frequent. No case of life-threatening complication or the need for blood transfusion was reported. Conclusion. After urogynecological procedures, septuagenarians and older patients are more likely to develop mild postoperative complications but not more intraoperative or severe postoperative complications compared to younger patients.


Subject(s)
Gynecologic Surgical Procedures/methods , Laparoscopy/methods , Postoperative Complications/epidemiology , Age Factors , Aged , Aged, 80 and over , Female , Humans , Middle Aged , Pelvic Organ Prolapse/surgery , Plastic Surgery Procedures/methods , Retrospective Studies , Surgical Mesh , Urinary Incontinence/surgery , Uterine Prolapse/surgery , Vagina/surgery
9.
Geburtshilfe Frauenheilkd ; 75(5): 456-461, 2015 May.
Article in English | MEDLINE | ID: mdl-26097249

ABSTRACT

Background: One of the key points of patient care is the cooperation between practice-based specialists and clinical facilities. The present study was undertaken in order to illustrate the deciding factors, from the viewpoint of practice-based specialists, for the referral of a female patient to a specific hospital. Methods: Altogether a total of 322 practice-based specialists from various disciplines were contacted in writing and sent a questionnaire. In this survey the recipients were questioned about the criteria, in order of importance, applied for the referral of a (female) patient to a specific clinical facility. Results: In the foreground for the referral of a patient to a specific hospital are the aspects of medical quality and competence. On a closer look we find the surgical spectrum, especially the availability of endoscopic and special operations as a main factor. Further factors are a low rate of complications and the availability of modern diagnostic methods. Also evaluated as an important aspect was the easy reachability of a competent consultant. Factors of lower relevance for referral behaviour were personal familiarity with the colleagues employed in the hospital, specific further training events and the course of previous cooperation. Conclusions: A modern diagnostic and therapeutic spectrum coupled with an easy reachability of competent contact partners are the main factors for cooperation from the viewpoint of the practice-based specialist. Of lowest relevance, among others, was the aspect of previous cooperation. Thus, it can be seen that by means of changes in cooperation an improvement in patient care can be achieved at any time.

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