1
|
Alkatout I, Mechler U, Mettler L, Pape J, Maass N, Biebl M, Gitas G, Laganà AS, Freytag D. The Development of Laparoscopy-A Historical Overview. Front Surg 2022; 8:799442. [PMID: 34977146 PMCID: PMC8714650 DOI: 10.3389/fsurg.2021.799442] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Accepted: 11/17/2021] [Indexed: 11/17/2022] Open
Abstract
The advent of laparoscopy marked a fundamental change in the evolution of medicine. The procedure progressed consistently after the first time it was performed in a human being nearly a hundred years ago. The 1960's and 1980's witnessed groundbreaking changes. During this time, laparoscopy evolved from a purely diagnostic procedure into an independent surgical approach. Outstanding pioneers of the times were Palmer, Frangenheim and Semm. Laparoscopy advanced rapidly and influenced gynecology as well. The procedure was initially attacked most vociferously by the surgical fraternity. However, within a short period of time the pendulum shifted: laparoscopy became the preferred surgical approach for a variety of diseases—whether benign or malignant—in several medical disciplines. Laparoscopy has become a routine approach in the twenty-first century. Technical advancements have led to robot-assisted surgery. Future developments will include artificial intelligence and augmented reality. In the present article we address past milestones, current practices, and future challenges in laparoscopy.
Collapse
Affiliation(s)
- Ibrahim Alkatout
- Department of Obstetrics and Gynecology, University Hospital of Schleswig-Holstein, Kiel, Germany
| | - Ulrich Mechler
- Institute of History and Ethics of Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Liselotte Mettler
- Department of Obstetrics and Gynecology, University Hospital of Schleswig-Holstein, Kiel, Germany
| | - Julian Pape
- Department of Obstetrics and Gynecology, University Hospital of Schleswig-Holstein, Kiel, Germany
| | - Nicolai Maass
- Department of Obstetrics and Gynecology, University Hospital of Schleswig-Holstein, Kiel, Germany
| | - Matthias Biebl
- Department of Surgery, Campus Charité Mitte and Campus Virchow-Klinikum, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Georgios Gitas
- Department of Obstetrics and Gynecology, Campus Charité Mitte, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Antonio Simone Laganà
- Department of Obstetrics and Gynecology, "Filippo Del Ponte" Hospital, University of Insubria, Varese, Italy
| | - Damaris Freytag
- Department of Obstetrics and Gynecology, University Hospital of Schleswig-Holstein, Kiel, Germany
| |
Collapse
|
2
|
Freytag D, Peters G, Mettler L, Gitas G, Maass N, Alkatout I. Perioperative considerations in the treatment of endometriosis. J Turk Ger Gynecol Assoc 2021; 22:319-325. [PMID: 34109767 PMCID: PMC8666993 DOI: 10.4274/jtgga.galenos.2021.2021.0017] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Accepted: 03/29/2021] [Indexed: 12/01/2022] Open
Abstract
Endometriosis is one of the most common benign diseases in women of reproductive age. Nearly all gynecological offices and clinics will contain patients with endometriosis; the frequency and severity of the disease will vary from one setting to another. Adjoining specialties, such as internal medicine, general medicine, surgery, urology, orthopedics, neurology and psychosomatic medicine, will be challenged directly or indirectly by various forms of endometriosis and its sequelae. The disease is characterized by pelvic pain, dysmenorrhea, dyspareunia and sterility. Even now, several years may elapse between the onset of the disease and its diagnosis. The diagnosis of endometriosis is complicated by the diversity of the symptoms. A precise documentation of the patient’s medical history and thorough diagnostic procedures are essential to establish a robust diagnosis. This article will discuss the perioperative considerations, diagnosis and treatment of endometriosis.
Collapse
Affiliation(s)
- Damaris Freytag
- Department of Obstetrics and Gynecology, University Hospital Schleswig-Holstein, Campus Kiel, Kiel, Germany
| | - Göntje Peters
- Department of Obstetrics and Gynecology, University Hospital Schleswig-Holstein, Campus Kiel, Kiel, Germany
| | - Liselotte Mettler
- Department of Obstetrics and Gynecology, University Hospital Schleswig-Holstein, Campus Kiel, Kiel, Germany
| | - Georgios Gitas
- Department of Obstetrics and Gynecology, University Hospital Schleswig-Holstein, Campus Lübeck, Lübeck, Germany
| | - Nicolai Maass
- Department of Obstetrics and Gynecology, University Hospital Schleswig-Holstein, Campus Kiel, Kiel, Germany
| | - Ibrahim Alkatout
- Department of Obstetrics and Gynecology, University Hospital Schleswig-Holstein, Campus Kiel, Kiel, Germany
| |
Collapse
|
3
|
Abstract
BACKGROUND Recurrent implantation failure (RIF) can be defined as a failure to achieve a clinical pregnancy after transfer of at least four embryos of good quality in a minimum of three fresh or frozen cycles in women under the age of 40. RIF is often a complex problem with a wide variety of etiologies and mechanisms as well as treatment options. SUMMARY Anatomical conditions of the uterus, thrombophilia, genetic abnormalities, or immunological factors are only a few examples which could be responsible for RIF. The recommendations for women with RIF vary depending on the source of their problem. There is not just one treatment option, but many depending on the etiology and the severity of the problem. KEY MESSAGE However, it would help to establish a set of standardized examinations and tests to use, in order to do a preliminary evaluation on each patient, which would then hopefully direct the approach of treatment for each individual couple.
Collapse
Affiliation(s)
- Veronika Günther
- Department of Obstetrics and Gynecology, University Hospitals Schleswig-Holstein, Kiel, Germany
- Ambulanzzentrum des UKSH gGmbH, University Fertility Center, Kiel, Germany
| | - Sören V Otte
- Ambulanzzentrum des UKSH gGmbH, University Fertility Center, Kiel, Germany
| | - Damaris Freytag
- Department of Obstetrics and Gynecology, University Hospitals Schleswig-Holstein, Kiel, Germany
| | - Nicolai Maass
- Department of Obstetrics and Gynecology, University Hospitals Schleswig-Holstein, Kiel, Germany
| | - Ibrahim Alkatout
- Department of Obstetrics and Gynecology, University Hospitals Schleswig-Holstein, Kiel, Germany
| |
Collapse
|
4
|
Dhanawat J, Pape J, Stuhlmann‐Laeisz C, Maass N, Freytag D, Gitas G, Alkatout I. Ectopic pregnancy in noncommunicating horn of unicornuate uterus: 3D-ultrasound and primary laparoscopic management. Clin Case Rep 2021; 9:e04261. [PMID: 34084520 PMCID: PMC8142796 DOI: 10.1002/ccr3.4261] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Revised: 01/23/2021] [Indexed: 11/12/2022] Open
Abstract
Unicornuate uterus with pregnancy in the noncommunicating rudimentary horn is extremely rare. Diagnosis requires awareness, high suspicion index, 3D ultrasound, and MRI. If missed, it can be catastrophic. Treatment varies across literature. We present a case where detection was done by 3D ultrasound and primary laparoscopic surgery done for treatment.
Collapse
Affiliation(s)
- Juhi Dhanawat
- Department of Gynecology and ObstetricsUniversity Hospitals Schleswig‐HolsteinKielGermany
| | - Julian Pape
- Department of Gynecology and ObstetricsUniversity Hospitals Schleswig‐HolsteinKielGermany
| | | | - Nicolai Maass
- Department of Gynecology and ObstetricsUniversity Hospitals Schleswig‐HolsteinKielGermany
| | - Damaris Freytag
- Department of Gynecology and ObstetricsUniversity Hospitals Schleswig‐HolsteinKielGermany
| | - Georgios Gitas
- Department of Gynaecology and ObstetricsUniversity Hospitals Schleswing‐HolsteinLeubeckGermany
| | - Ibrahim Alkatout
- Department of Gynecology and ObstetricsUniversity Hospitals Schleswig‐HolsteinKielGermany
| |
Collapse
|
5
|
Deenadayal M, Günther V, Alkatout I, Freytag D, Deenadayal-Mettler A, Deenadayal Tolani A, Sinha R, Mettler L. Critical Role of 3D ultrasound in the diagnosis and management of Robert's uterus: a single-centre case series and a review. Facts Views Vis Obgyn 2021; 13:41-49. [PMID: 33889860 PMCID: PMC8051191 DOI: 10.52054/fvvo.13.1.008] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
A septate uterus with a non-communicating hemicavity was first described by Robert in 1969/70 as a specific malformation of the uterus. The condition is commonly associated with a blind uterine hemicavity, unilateral haematometra, a contralateral unicornuate uterine cavity and a normal external uterine fundus. The main symptoms are repetitive attacks of pain at four-weekly intervals around menarche, repeated dysmenorrhea, recurrent pregnancy loss and infertility. In this report, we review the disease, its diagnosis and treatment, and describe five cases of Robert's uterus. Three dimensional (3D) ultrasound (US) imaging was performed by the transvaginal route in four cases. In the fifth case of a 13-year-old girl, we avoided the vaginal route and magnetic resonance imaging (MRI) and 3D transrectal US yielded the correct diagnosis. The following treatment procedures were undertaken: laparoscopic endometrectomy, hysteroscopic septum resection, laparoscopic uterine hemicavity resection and total laparoscopic hysterectomy (TLH). The diagnosis and optimum treatment of Robert's uterus remains difficult for clinicians because of its rarity. A detailed and careful assessment by 3D US should be performed, followed by hysteroscopy in combination with laparoscopy, to confirm the diagnosis.
Collapse
Affiliation(s)
- M Deenadayal
- Mamata Fertility Hospital, 9-1-192, St Marys Rd, Telangana 500003, Hyderabad, India
| | - V Günther
- Department of Obstetrics and Gynecology, University Hospitals Schleswig-Holstein, Campus Kiel, Arnold-Heller-Str. 3, 24105 Kiel, Germany
| | - I Alkatout
- Department of Obstetrics and Gynecology, University Hospitals Schleswig-Holstein, Campus Kiel, Arnold-Heller-Str. 3, 24105 Kiel, Germany
| | - D Freytag
- Department of Obstetrics and Gynecology, University Hospitals Schleswig-Holstein, Campus Kiel, Arnold-Heller-Str. 3, 24105 Kiel, Germany
| | - A Deenadayal-Mettler
- Department of Obstetrics and Gynecology, University Hospitals Schleswig-Holstein, Campus Kiel, Arnold-Heller-Str. 3, 24105 Kiel, Germany
| | - A Deenadayal Tolani
- Mamata Fertility Hospital, 9-1-192, St Marys Rd, Telangana 500003, Hyderabad, India
| | - R Sinha
- Apollo Health City, Gynaecology, Road No 72, Hyderabad, Telangana 500033, Hyderabad, India
| | - L Mettler
- Department of Obstetrics and Gynecology, University Hospitals Schleswig-Holstein, Campus Kiel, Arnold-Heller-Str. 3, 24105 Kiel, Germany
| |
Collapse
|
6
|
Gitas G, Alkatout I, Proppe L, Werner N, Rody A, Hanker L, Pados G, Freytag D, Sommer S, Baum S. Surgical outcomes of conventional laparoscopic and robotic-assisted hysterectomy. Int J Med Robot 2021; 17:e2225. [PMID: 33440062 DOI: 10.1002/rcs.2225] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2020] [Revised: 01/06/2021] [Accepted: 01/08/2021] [Indexed: 11/08/2022]
Abstract
INTRODUCTION The aim of the present study was to compare surgical outcomes of total laparoscopic hysterectomy with those of the robotic approach using the da Vinci Xi system. METHODS Patients who underwent hysterectomy with da Vinci Xi for early endometrial cancer or benign indications from 2018 to 2019 were selected. The control group consisted of patients who underwent conventional laparoscopy. RESULTS A total of 300 patients were included in the study. The mean duration of surgery differed significantly (p = 0.025) between those who underwent laparoscopy (125.01 ± 76.168) and robotic-assisted surgery (142.96 ± 82.657 min). Blood loss, median hospital stay, intraoperative and postoperative complications were similar in both groups. No statistical difference was observed in the subgroups with a body mass index of more than 30 kg/m2 or more than 40 kg/m2 concerning the duration of surgery or the surgical outcome. CONCLUSION The da Vinci Xi did not improve surgical outcomes in patients who underwent hysterectomy by trained laparoscopists and takes more time than conventional laparoscopy when performed in patients of normal weight.
Collapse
Affiliation(s)
- Georgios Gitas
- Department of Obstetrics and Gynecology, University Hospital of Schleswig Holstein, Campus Luebeck, Luebeck, Germany
| | - Ibrahim Alkatout
- Department of Obstetrics and Gynecology, University Hospital of Schleswig Holstein, Campus Kiel, Kiel, Germany
| | - Louisa Proppe
- Department of Obstetrics and Gynecology, University Hospital of Schleswig Holstein, Campus Luebeck, Luebeck, Germany
| | - Nele Werner
- Department of Obstetrics and Gynecology, University Hospital of Schleswig Holstein, Campus Luebeck, Luebeck, Germany
| | - Achim Rody
- Department of Obstetrics and Gynecology, University Hospital of Schleswig Holstein, Campus Luebeck, Luebeck, Germany
| | - Lars Hanker
- Department of Obstetrics and Gynecology, University Hospital of Schleswig Holstein, Campus Luebeck, Luebeck, Germany
| | - George Pados
- First Department of Obstetrics and Gynecology, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Damaris Freytag
- Department of Obstetrics and Gynecology, University Hospital of Schleswig Holstein, Campus Kiel, Kiel, Germany
| | - Soteris Sommer
- Department of Obstetrics and Gynecology, University Hospital of Schleswig Holstein, Campus Luebeck, Luebeck, Germany
| | - Sascha Baum
- Department of Obstetrics and Gynecology, University Hospital of Schleswig Holstein, Campus Luebeck, Luebeck, Germany
| |
Collapse
|
7
|
Gitas G, Freytag D, Allahqoli L, Baum S, Rody A, Maass N, Dinas K, Laganà AS, Moawad G, Sotiriadis A, Alkatout I. Lymphadenectomy in endometrial cancer - achieving more with less? MINIM INVASIV THER 2021; 31:531-539. [PMID: 33439061 DOI: 10.1080/13645706.2020.1868009] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
The lymph node status of patients with endometrial cancer is known to be a crucial determinant for the prognosis of the disease. It also provides the indication for further adjuvant treatment. The staging of endometrial cancer by surgery has been a controversial issue for more than 30 years. The significant complication rate after lymphadenectomy and the development of minimally invasive surgery have led to the use of sentinel lymph node (SLN) mapping. In the present review, we present the development of surgical staging procedures in patients with endometrial cancer and summarize the recently expanding body of published literature on the subject. SLN mapping is a safe and accurate technique, especially when indocyanine green is used as a tracer. SLN mapping appears to reduce complication rates as well as costs without affecting the oncologic outcome. Large prospective studies are needed to establish the effects of SLN mapping on the outcome of disease, especially in high-risk patients with endometrial cancer. Furthermore, the need for additional systematic lymphadenectomy prior to adjuvant radio-chemotherapy in patients diagnosed with isolated lymph node metastasis during SLN biopsy must be investigated further. This might pave the way for a new surgical approach in patients with endometrial cancer.
Collapse
Affiliation(s)
- Georgios Gitas
- Department of Obstetrics and Gynecology, University Hospital of Schleswig Holstein, Luebeck, Germany
| | - Damaris Freytag
- Department of Obstetrics and Gynecology, University Hospital of Schleswig Holstein, Kiel, Germany
| | - Leila Allahqoli
- Endometriosis Research Center, Iran University of Medical Sciences (IUMS), Tehran, Iran
| | - Sascha Baum
- Department of Obstetrics and Gynecology, University Hospital of Schleswig Holstein, Luebeck, Germany
| | - Achim Rody
- Department of Obstetrics and Gynecology, University Hospital of Schleswig Holstein, Luebeck, Germany
| | - Nicolai Maass
- Department of Obstetrics and Gynecology, University Hospital of Schleswig Holstein, Kiel, Germany
| | - Konstantinos Dinas
- Second Department of Obstetrics and Gynecology, Medical School, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Antonio Simone Laganà
- Department of Obstetrics and Gynecology, Filippo Del Ponte Hospital, University of Insubria, Varese, Italy
| | - Gaby Moawad
- Department of Obstetrics and Gynecology, George Washington University School of Medicine and Health Sciences, Washington, DC, USA
| | - Alexandros Sotiriadis
- Second Department of Obstetrics and Gynecology, Medical School, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Ibrahim Alkatout
- Department of Obstetrics and Gynecology, University Hospital of Schleswig Holstein, Kiel, Germany
| |
Collapse
|
8
|
Gitas G, Proppe L, Baum S, Kruggel M, Rody A, Tsolakidis D, Zouzoulas D, Laganà AS, Guenther V, Freytag D, Alkatout I. A risk factor analysis of complications after surgery for vulvar cancer. Arch Gynecol Obstet 2021; 304:511-519. [PMID: 33420814 PMCID: PMC8277626 DOI: 10.1007/s00404-020-05949-w] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Accepted: 12/23/2020] [Indexed: 12/14/2022]
Abstract
Introduction Despite the less frequent use of surgery in patients with vulvar cancer, the high rates of postoperative complications are still a matter of concern. The aim of the present study was to identify risk factors that influence postoperative complications rates in vulvar cancer and identify specific clinical parameters that may influence their incidence.
Materials Patients who underwent curative-intent surgery for squamous cell carcinoma of the vulva from 2003 to 2018 were selected. All patient characteristics were analyzed as risk factors for the development of postoperative lymphocele, lymphedema, and wound dehiscence. The patients were followed up for 2 years postoperatively.
Results The investigation comprised 121 patients, of whom 18.1% developed wound dehiscence, 17.7% a lymphocele, and 20.4% lymphedema. We found no significant evidence of an association between patient’s characteristics and postoperative complications. The depth of tumor invasion and the appearance of lymph-node metastasis were significantly associated with postoperative complications. Free resection margins of 5 mm or more were associated with a reduced risk of postoperative complications compared to resection margins less than 5 mm. No complications were encountered after sentinel node biopsy (SNB). Complication rates were associated with inguinofemoral lymphadenectomy, but not with the extent of lymphadenectomy. The development of a lymphocele or wound dehiscence may be correlated with the development of long-term lymphedema. Conclusion FIGO stage at diagnosis influences the risk of postoperative complications. The use of SNB minimized postoperative complications. Correlations between the free microscopic resection margin distance and the risk of postoperative wound dehiscence must be investigated further.
Collapse
Affiliation(s)
- Georgios Gitas
- Department of Obstetrics and Gynecology, University Hospital of Schleswig Holstein, Campus Luebeck, Ratzeburger Allee 160, Haus A, 23538, Luebeck, Germany.
| | - L Proppe
- Department of Obstetrics and Gynecology, University Hospital of Schleswig Holstein, Campus Luebeck, Ratzeburger Allee 160, Haus A, 23538, Luebeck, Germany
| | - S Baum
- Department of Obstetrics and Gynecology, University Hospital of Schleswig Holstein, Campus Luebeck, Ratzeburger Allee 160, Haus A, 23538, Luebeck, Germany
| | - M Kruggel
- Department of Obstetrics and Gynecology, University Hospital of Schleswig Holstein, Campus Luebeck, Ratzeburger Allee 160, Haus A, 23538, Luebeck, Germany
| | - A Rody
- Department of Obstetrics and Gynecology, University Hospital of Schleswig Holstein, Campus Luebeck, Ratzeburger Allee 160, Haus A, 23538, Luebeck, Germany
| | - D Tsolakidis
- First Department of Obstetrics and Gynecology, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - D Zouzoulas
- First Department of Obstetrics and Gynecology, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - A S Laganà
- Department of Obstetrics and Gynecology, Filippo Del Ponte Hospital, University of Insubria, Varese, Italy
| | - V Guenther
- Department of Obstetrics and Gynecology, University Hospital of Schleswig Holstein, Campus Kiel, Kiel, Germany
| | - D Freytag
- Department of Obstetrics and Gynecology, University Hospital of Schleswig Holstein, Campus Kiel, Kiel, Germany
| | - I Alkatout
- Department of Obstetrics and Gynecology, University Hospital of Schleswig Holstein, Campus Kiel, Kiel, Germany
| |
Collapse
|
9
|
Abstract
INTRODUCTION Endometriosis is a common disease in women of reproductive age. In addition to causing pain, it may also reduce fertility. The coexistence of endometriosis and congenital uterine anomalies (CUA) has been frequently reported in the published literature. The present report is a review of existing studies on the subject and our own hitherto unpublished data. EVIDENCE ACQUISITION The electronic search was conducted using the Pubmed database with specific keyword combinations including endometriosis, adenomyosis, infertility, Müllerian malformations/anomalies, and septate uterus. The principal aspects addressed in the present study were: diagnosis, management, and classification of CUA, their impact on fertility and coexistence with endometriosis. EVIDENCE SYNTHESIS Endometriosis and CUA are frequently detected in the exploration of infertility, because both of these are liable to impair fertility. Endometriosis is associated with obstructive anomalies and nonobstructive malformations, especially those concerning the septate uterus. The diagnosis and management of CUA have been discussed for several years. Various classification systems have been proposed. CONCLUSIONS The analysis of the existing literature has revealed the absence of any consensus about the management, diagnosis, and classification of CUA, especially with regard to the septate uterus. We need to find and speak a common language in order to avoid inappropriate or unnecessary surgery and optimize the individual patient's treatment. The combined presence of endometriosis or adenomyosis and CUA is a reason to perform precise diagnostic imaging investigations and early surgery for the purpose of enhancing the chances of pregnancy in infertile patients. Further research is needed on the subject.
Collapse
Affiliation(s)
- Damaris Freytag
- Clinic for Obstetrics and Gynecology, UKSH Campus Kiel, Kiel, Germany
| | - Liselotte Mettler
- Clinic for Obstetrics and Gynecology, UKSH Campus Kiel, Kiel, Germany
| | - Nicolai Maass
- Clinic for Obstetrics and Gynecology, UKSH Campus Kiel, Kiel, Germany
| | - Veronika Günther
- Clinic for Obstetrics and Gynecology, UKSH Campus Kiel, Kiel, Germany
| | - Ibrahim Alkatout
- Clinic for Obstetrics and Gynecology, UKSH Campus Kiel, Kiel, Germany -
| |
Collapse
|
10
|
Blaj G, Caragiulo P, Carini G, Carron S, Dragone A, Freytag D, Haller G, Hart P, Herbst R, Herrmann S, Hasi J, Kenney C, Markovic B, Nishimura K, Osier S, Pines J, Segal J, Tomada A, Weaver M. Detector Development for the Linac Coherent Light Source. ACTA ACUST UNITED AC 2014. [DOI: 10.1080/08940886.2014.930803] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
11
|
Ackerman N, Aharmim B, Auger M, Auty DJ, Barbeau PS, Barry K, Bartoszek L, Beauchamp E, Belov V, Benitez-Medina C, Breidenbach M, Burenkov A, Cleveland B, Conley R, Conti E, Cook J, Cook S, Coppens A, Counts I, Craddock W, Daniels T, Danilov MV, Davis CG, Davis J, deVoe R, Djurcic Z, Dobi A, Dolgolenko AG, Dolinski MJ, Donato K, Dunford M, Fairbank W, Farine J, Fierlinger P, Franco D, Freytag D, Giroux G, Gornea R, Graham K, Gratta G, Green MP, Hägemann C, Hall C, Hall K, Haller G, Hargrove C, Herbst R, Herrin S, Hodgson J, Hughes M, Johnson A, Karelin A, Kaufman LJ, Koffas T, Kuchenkov A, Kumar A, Kumar KS, Leonard DS, Leonard F, LePort F, Mackay D, MacLellan R, Marino M, Martin Y, Mong B, Díez MM, Morgan P, Müller AR, Neilson R, Nelson R, Odian A, O'Sullivan K, Ouellet C, Piepke A, Pocar A, Prescott CY, Pushkin K, Rivas A, Rollin E, Rowson PC, Russell JJ, Sabourov A, Sinclair D, Skarpaas K, Slutsky S, Stekhanov V, Strickland V, Swift M, Tosi D, Twelker K, Vogel P, Vuilleumier JL, Vuilleumier JM, Waite A, Waldman S, Walton T, Wamba K, Weber M, Wichoski U, Wodin J, Wright JD, Yang L, Yen YR, Zeldovich OY. Observation of two-neutrino double-beta decay in 136Xe with the EXO-200 detector. Phys Rev Lett 2011; 107:212501. [PMID: 22181874 DOI: 10.1103/physrevlett.107.212501] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2011] [Indexed: 05/31/2023]
Abstract
We report the observation of two-neutrino double-beta decay in (136)Xe with T(1/2) = 2.11 ± 0.04(stat) ± 0.21(syst) × 10(21) yr. This second-order process, predicted by the standard model, has been observed for several nuclei but not for (136)Xe. The observed decay rate provides new input to matrix element calculations and to the search for the more interesting neutrinoless double-beta decay, the most sensitive probe for the existence of Majorana particles and the measurement of the neutrino mass scale.
Collapse
Affiliation(s)
- N Ackerman
- SLAC National Accelerator Laboratory, Stanford, California, USA
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
12
|
Prehn-Kristensen A, Molzow I, Munz M, Wilhelm I, Müller K, Freytag D, Wiesner CD, Baving L. Sleep restores daytime deficits in procedural memory in children with attention-deficit/hyperactivity disorder. Res Dev Disabil 2011; 32:2480-2488. [PMID: 21820271 DOI: 10.1016/j.ridd.2011.06.021] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2011] [Accepted: 06/24/2011] [Indexed: 05/31/2023]
Abstract
Sleep supports the consolidation of declarative and procedural memory. While prefrontal cortex (PFC) activity supports the consolidation of declarative memory during sleep, opposite effects of PFC activity are reported with respect to the consolidation of procedural memory during sleep. Patients with attention-deficit/hyperactivity disorder (ADHD) are characterised by a prefrontal hypoactivity. Therefore, we hypothesised that children with ADHD benefit from sleep with respect to procedural memory more than healthy children. Sixteen children with ADHD and 16 healthy controls (aged 9-12) participated in this study. A modification of the serial-reaction-time task was conducted. In the sleep condition, learning took place in the evening and retrieval after a night of sleep, whereas in the wake condition learning took place in the morning and retrieval in the evening without sleep. Children with ADHD showed an improvement in motor skills after sleep compared to the wake condition. Sleep-associated gain in reaction times was positively correlated with the amount of sleep stage 4 and REM-density in ADHD. As expected, sleep did not benefit motor performance in the group of healthy children. These data suggest that sleep in ADHD normalizes deficits in procedural memory observed during daytime. It is discussed whether in patients with ADHD attenuated prefrontal control enables sleep-dependent gains in motor skills by reducing the competitive interference between explicit and implicit components within a motor task.
Collapse
Affiliation(s)
- Alexander Prehn-Kristensen
- Center for Integrative Psychiatry, Department of Child and Adolescent Psychiatry and Psychotherapy, Christian-Albrechts-University School of Medicine, 24105 Kiel, Germany.
| | | | | | | | | | | | | | | |
Collapse
|
13
|
Kienzle W, Maglic B, Levrat B, Lefebvres F, Freytag D, Blieden H. Evidence for a singly charged boson of mass 962 MeV and narrow width. ACTA ACUST UNITED AC 1965. [DOI: 10.1016/0031-9163(65)90932-7] [Citation(s) in RCA: 53] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
14
|
Blieden H, Freytag D, Geibel J, Hassan A, Kienzle W, Lefebvres F, Levrat B, Maglic B, Seguinot J, Smith A. Observation of ϱ− meson with a missing-mass spectrometer operating in region of “Jacobian peaks”. ACTA ACUST UNITED AC 1965. [DOI: 10.1016/0031-9163(65)90934-0] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
15
|
Lefebvres F, Levrat B, Blieden H, Dubal L, Focacci MN, Freytag D, Geibel J, Kienzle W, Maglic B, Martin M, Orear J. Boson spectrum from 1.1 to 1.6 GeV and properties of A−2 meson observed by missing-mass spectrometer. ACTA ACUST UNITED AC 1965. [DOI: 10.1016/0031-9163(65)90931-5] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|