Ignacio Cristóbal Quevedo

Dr. Ignacio Cristóbal Quevedo

Department of Gynecology, Hospital Clínico San Carlos, Madrid, Spain
orcid

Research Focus & Metrics

Academic Career Length

6Years (2021-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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17 August 2024 in International Journal of Gynecological Cancer
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ECEnrique Chacon
Enrique Chacon
FBFelix Boria
Felix Boria
RIR. Rajagopalan Iyer
R. Rajagopalan Iyer
FFFrancesco Fanfani
Francesco Fanfani
MMMario Malzoni
Mario Malzoni
LBLampe Bjourn
Lampe Bjourn
Objective Management of endometrial cancer is advancing, with accurate staging crucial for guiding treatment decisions. Understanding sentinel lymph node (SLN) involvement rates across molecular subgroups is essential. To evaluate SLN involvement in early-stage (International Federation of Gynecology and Obstetrics 2009 I–II) endometrial cancer, considering molecular subtypes and new European Society of Gynaecological Oncology (ESGO) risk classification. Methods The SENECA study retrospectively reviewed data from 2139 women with stage I–II endometrial cancer across 66 centers in 16 countries. Patients underwent surgery with SLN assessment following ESGO guidelines between January 2021 and December 2022. Molecular analysis was performed on pre-operative biopsies or hysterectomy specimens. Results Among the 2139 patients, the molecular subgroups were as follows: 272 (12.7%) p53 abnormal (p53abn, 1191 (55.7%) non-specific molecular profile (NSMP), 581 (27.2%) mismatch repair deficient (MMRd), 95 (4.4%) POLE mutated (POLE-mut). Tracer diffusion was detected in, at least one side, in 97.2% of the cases; with a bilateral diffusion observed in 82.7% of the cases. By ultrastaging (90.7% of the cases) or one-step nucleic acid amplification (198 (9.3%) of the cases), 205 patients were identified with affected sentinel lymph nodes, representing 9.6% of the sample. Of these, 139 (67.8%) had low-volume metastases (including micrometastases, 42.9%; and isolated tumor cells, 24.9%) while 66 (32.2%) had macrometastases. Significant differences in SLN involvement were observed between molecular subtypes, with p53abn and MMRd groups having the highest rates (12.50% and 12.40%, respectively) compared with NSMP (7.80%) and POLE-mut (6.30%), (p=0.004); (p53abn, OR=1.69 (95% CI 1.11 to 2.56), p=0.014; MMRd, OR=1.67 (95% CI 1.21 to 2.31), p=0.002). Differences were also noted among ESGO risk groups (2.84% for low-risk patients, 6.62% for intermediate-risk patients, 21.63% for high–intermediate risk patients, and 22.51% for high-risk patients; p<0.001). Conclusions Our study reveals significant differences in SLN involvement among patients with early-stage endometrial cancer based on molecular subtypes. This underscores the importance of considering molecular characteristics for accurate staging and optimal management decisions.

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JPJesus A. Pelazas-Hernández
Jesus A. Pelazas-Hernández
David Varillas DelgadoDavid Varillas Delgado
David Varillas Delgado
TGTeresa González-Casado
Teresa González-Casado
Ignacio Cristóbal QuevedoIgnacio Cristóbal Quevedo
Ignacio Cristóbal Quevedo
AAAgustina Alonso-Bermejo
Agustina Alonso-Bermejo
ICIgnacio Cristobal
Ignacio Cristobal
Background: The cognitive distraction caused by Virtual Reality (VR) seems to cause a decrease both in pain and its perception as in the time spent thinking about possible pain, among anxiety about hysteroscopy procedure. The main objective of this investigation was to evaluate the efficacy of virtual reality for pain relief during outpatient hysteroscopy. Method: A total of 83 patients underwent outpatient diagnostic hysteroscopy in a single-centre, open-label, randomized control trial. Overall, 180 women with medical indication for an outpatient diagnostic hysteroscopy were randomized. Ten were excluded due to the impossibility of entering the endometrial cavity caused by a cervical canal that was not permeable, and 15 did not tolerate the pain at the beginning and during the procedure, excluding themselves from the final model. Finally, 154 were analysed per protocol to use VR (n = 82, study group) or standard treatment (n = 72, control group) assessing the differences between both groups by reduction in pain using Visual Analogue Scale score (VAS: 0–10 cm) and clinical data (arterial pressure, heart rate, and oxygen saturation) at the end of hysteroscopy, at 15 and 30 min after hysteroscopy. Results: Women with VR outpatient diagnostic hysteroscopy experienced less pain at final (VAS score 2.451 vs. 3.972, standard mean difference (SMD) −1.521, 95% CI −2.601 to −0.440; p = 0.006), at 15 min (VAS 1.769 vs. 3.300, SMD −1.531, 95% CI −2.557 to −0.504; p = 0.004), and at 30 min (VAS 1.621 vs. 2.719, SMD −1.099, 95% CI −2.166 to −0.031; p = 0.044) after the ending of the hysteroscopy, compared with no VR. Conclusions: The use of VR during outpatient diagnostic hysteroscopy proved effective in the reduction of pain in this randomized control trial. It shows wide potential role in ambulatory gynaecologic procedures to avoid repeating tests, perform surgeries without anaesthesia, and the use of medication and its side effects.

16 January 2025 in Archives of Gynecology and Obstetrics
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MMMaría Jesús Sánchez Martín
María Jesús Sánchez Martín
CLCristina Huerga López
Cristina Huerga López
ICIgnacio Cristobal
Ignacio Cristobal
Ignacio Cristóbal QuevedoIgnacio Cristóbal Quevedo
Ignacio Cristóbal Quevedo
Purpose Uterine fibroids are the most common pelvic tumors in women, representing the primary indication of hysterectomy. Gonadotropin-releasing hormone (GnRH) antagonists represent a new therapeutic option for premenopausal women. The aim of this review is to evaluate the efficacy and safety of GnRH antagonists in the treatment of uterine fibroids (size reduction and symptom control). Methods A review of studies from electronic databases (PubMed and Cochrane Central) published up to December 2023 was performed. Eleven randomized clinical trials with a total of 4164 patients were included in the review, which evaluated GnRH antagonists (Relugolix, Elagolix, Linzagolix and Cetrorelix) against placebo or GnRH agonists in premenopausal women with uterine fibroids and heavy menstrual bleeding. Results The results of the measures evaluated to determine the efficacy and safety of GnRH antagonists versus placebo are favorable for the variables of control of uterine bleeding (Relative risk (RR) = 5.09; 95% CI 3.19 to 8.14), percentage reduction of fibroid volume (Mean difference (MD) = -27.36; 95% CI −38.89 to −15.83) and lower reduction of bone density (MD -0.35; 95% CI −0.47 to −0.24). The results do not allow us to conclude whether there are differences between the alternatives compared in the control of vasomotor symptoms. Conclusions GnRH antagonists represent an effective alternative for uterine fibroids treatment as they allow a superior reduction in menstrual bleeding and uterine fibroid volume compared to the placebo group.

5 September 2022 in Frontiers in Surgery
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ESEmanuela Spagnolo
Emanuela Spagnolo
Ignacio Cristóbal QuevedoIgnacio Cristóbal Quevedo
Ignacio Cristóbal Quevedo
SCSara Gortázar de Las Casas
Sara Gortázar de Las Casas
ACAna López Carrasco
Ana López Carrasco
MLMaria Carbonell López
Maria Carbonell López
AGAlicia Hernández Gutiérrez
Alicia Hernández Gutiérrez
Objective: Assess the surgeons' workload during deep endometriosis surgery after ureteral ICGDesign: Prospective, consecutive, comparative, single-center studyPopulation: 41 patients enrolled to deep endometriosis surgery with ureteral ICG from January 2019 to July 2021 at La Paz University HospitalMethods: Patients were divided into 2 groups: patients operated during the learning curve of ureteral ICG instillation and patients operated after the technique was implemented and routinely performed. After surgery, the SURG-TLX form was completed by the surgeons. We evaluated whether a workload reduction occurred.Main outcomes measures: Surgeon's workload was measured using the SURG-TLX form, obtaining the total workload and 6 different dimensions (distractions, temporal demands, task complexity, mental demands, situational stress and physical demands)Results: A significant positive correlation was found between surgical complexity and situational stress (p = 0.04). Mental demands (p = 0.021), physical demands (p = 0.03), and total workload (p = 0.025) were significantly lower when the technique was routinely performed. The mental demand, physical demands, and total workload perceived by the surgeons at the beginning of the implementation was higher (68 [39–72], 27 [11–46.5], 229 [163–240], respectively) than in the latter ones (40 [9–63], 11.5 [0–32.8], 152 [133.3–213.8], respectively). Distractions appeared to be higher in the latter surgeries (8.5 [0–27.8]) than in the first surgeries (0 [0–7]; p = 0.057).Conclusions: Ureter ICG instillation prior to DE surgery significantly reduces the mental and physical demands and total workload of the surgeons in DE surgeries after overcoming the learning curve. Distractions appear to increase as surgical stress decreases.

20 October 2022 in Journal of Clinical Medicine
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AHAlicia Hernández
Alicia Hernández
ENElena Muñoz Núñez
Elena Muñoz Núñez
David Ramiro-CortijoDavid Ramiro-Cortijo
David Ramiro-Cortijo
ESEmanuela Spagnolo
Emanuela Spagnolo
ALAna Lopez
Ana Lopez
Ignacio Cristóbal QuevedoIgnacio Cristóbal Quevedo
Ignacio Cristóbal Quevedo
The quality of life (QoL) of women who have been surgically treated for endometriosis may be severely impaired. Therefore, QoL can be a determining factor in the recovery of these patients. The aims of this study were to evaluate if the QoL of women surgically treated for deep endometriosis differs from a healthy age-matched population from Catalonia (Spain) and to analyze the QoL of these women considering concomitant events. This is an observational cross-sectional study, where 112 women (between 18 and 48 years old), with endometriosis treated by surgery at Hospital Universitario La Paz (Madrid, Spain), were enrolled to assess the QoL using the second version of the 12-item short form (SF-12) questionnaire. The QoL in these women were tested against a reference population of healthy women using a standardized one-sample comparison method. In addition, the QoL was compared according to the pathophysiology and type of surgery. In women with endometriosis, the physical health component, but not mental health component, was positively correlated with age (r = 0.19; p-Value = 0.048). In addition, physical (20.3 ± 29.2) and social functions (29.7 ± 38.3) and the overall physical health component (37.8 ± 19.4) were significantly lower than the reference population. On the contrary, the body pain (64.1 ± 41.2), emotional role (62.5 ± 42.2), mental health (54.4 ± 26.0), vitality (59.3 ± 31.2), and the overall mental health component (59.4 ± 26.6) had significantly higher scores than the reference. The anatomical compartment of endometriosis, reintervention, bowel nodule resection, and fertility preservation did not show statistical differences in QoL. Women with deep endometriosis had worse physical and social functions, and the overall physical health, compared to the norm in Spanish women. Bodily pain, emotional role, vitality, and the overall mental health improved. These areas could be considered protective factors in this disease. Considering the importance of QoL in adjustments in mental and physical health, it would be necessary to improve these areas of QoL in women surgically treated for deep endometriosis.

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AHAlicia Hernández
Alicia Hernández
Pablo Robles de ZuluetaPablo Robles de Zulueta
Pablo Robles de Zulueta
ESEmanuela Spagnolo
Emanuela Spagnolo
Cristina Soguero-RuizCristina Soguero-Ruiz
Cristina Soguero-Ruiz
Ignacio Cristóbal QuevedoIgnacio Cristóbal Quevedo
Ignacio Cristóbal Quevedo
David Ramiro-CortijoDavid Ramiro-Cortijo
David Ramiro-Cortijo
Endometriosis is a gynecological pathology that affects between 6 and 15% of women of childbearing age. One of the manifestations is intestinal deep infiltrating endometriosis. This condition may force patients to resort to surgical treatment, often ending in resection. The level of blood perfusion at the anastomosis is crucial for its outcome, for this reason, indocyanine green (ICG), a fluorochrome that green stains the structures where it is present, is injected during surgery. This study proposes a novel method based on deep learning algorithms for quantifying the level of blood perfusion in anastomosis. Firstly, with a deep learning algorithm based on the U-Net, models capable of automatically segmenting the intestine from the surgical videos were generated. Secondly, blood perfusion level, from the already segmented video frames, was quantified. The frames were characterized using textures, precisely nine first- and second-order statistics, and then two experiments were carried out. In the first experiment, the differences in the perfusion between the two-anastomosis parts were determined, and in the second, it was verified that the ICG variation could be captured through the textures. The best model when segmenting has an accuracy of 0.92 and a dice coefficient of 0.96. It is concluded that segmentation of the bowel using the U-Net was successful, and the textures are appropriate descriptors for characterization of the blood perfusion in the images where ICG is present. This might help to predict whether postoperative complications will occur during surgery, enabling clinicians to act on this information.