Antonio Jesús Muñoz-Serrano

Dr. Antonio Jesús Muñoz-Serrano

orcid

Research Focus & Metrics

Academic Career Length

8Years (2019-Present)

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

Representative Publications

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1 August 2020 in Anales de Pediatría
Verified
Journal Article
Open access
MVMaría Velayos
María Velayos
AMAntonio Jesús Muñoz-Serrano
Antonio Jesús Muñoz-Serrano
KEKarla Estefanía-Fernández
Karla Estefanía-Fernández
MCMa Carmen Sarmiento Caldas
Ma Carmen Sarmiento Caldas
LLLucas Moratilla Lapeña
Lucas Moratilla Lapeña
JLJuan Carlos López-Gutiérrez
Juan Carlos López-Gutiérrez
Acute appendicitis (AA) is the most common abdominal surgical emergency. No specific studies have been found that evaluate the impact of the coronavirus 2 (SARS-Cov-2) pandemic on AA and its surgical management. An analysis was made on the influence of this new pathology on the clinical course of AA. Retrospective observational study was conducted on patients operated on for AA from January to April 2020. They were classified according to the time of the appendectomy, before the declaration of the state of alarm (pre-COVID-19), and after its declaration (post-COVID-19) in Spain, one the most affected countries in the world. An evaluation was made of demographic variables, duration of symptoms, type of appendicitis, surgical time, hospital stay, and postoperative complications. The study included 66 patients (41 pre-COVID-19; 25 post-COVID-19) with mean age of 10.7 ± 3 and 9.3 ± 3.1; P = .073, respectively. Fever was found in a higher number of post-COVID-19 patients (52 vs. 19.5%; P = 0.013), as well as a higher CRP (72.7 ± 96.2 vs. 31.3 ± 36.2 mg/dL; P = 0.042). This group presented with a higher proportion of complicated appendicitis when compared to pre-COVID-19 (32 vs. 7.3%; P = 0.015). The mean hospital stay was longer in the post-COVID-19 group (5.6 ± 5.9 vs. 3.2 ± 4.3 days; P = 0.041). No differences were found in the time of onset of symptoms or surgical time. The SARS-Cov-2 pandemic influenced the time of diagnosis of appendicitis, as well as its course, and mean hospital stay. Peritonitis was more frequently seen. As a result of the significant circumstances, delaying diagnosis and treatment of AA during SARS-Cov-2 pandemic, inappropriate management of this common surgical disorder has been noticed.

22 February 2021 in European Journal of Pediatric Surgery
Verified
Journal Article
Closed access
PDF file
Carlos Delgado-MiguelCarlos Delgado-Miguel
Carlos Delgado-Miguel
AMAntonio Jesús Muñoz-Serrano
Antonio Jesús Muñoz-Serrano
MMMiriam Miguel-Ferrero
Miriam Miguel-Ferrero
MCMaría De Ceano-Vivas
María De Ceano-Vivas
CCCristina Calvo
Cristina Calvo
LMLeopoldo Martínez
Leopoldo Martínez
Introduction Since home confinement for novel coronavirus disease 2019 (COVID-19) pandemic began, pediatric visits to the emergency department (ED) have decreased, including consultation for abdominal pain. Our aim is to investigate the incidence of complicated acute appendicitis (AA; peritonitis or appendicular mass) during confinement for COVID-19 pandemic and to compare it with the previous 5 years. Materials and Methods A retrospective study was performed in children with AA who underwent surgery between March 9 and April 13 from 2015 to 2020; patients were divided into six groups according to the year of surgery. We analyzed demographic variables, time from onset of symptoms, mean hospital stay, cumulative incidence, and incidence rate of complicated appendicitis. Results A total of 168 patients were included with no differences in the number of patients, gender, and age between groups. Patients in 2020 (COVID-19 group) presented longer symptom progression time (46.8 hours; p = 0.046), higher rate of complicated appendicitis (48.4%; p = 0.004), longer mean hospital stay (4.9 days; p < 0.001), increased cumulative incidence (8.27 cases per 100,000 children per 0.1 years; p < 0.001), and increased incidence rate of complicated appendicitis (83 cases per 100,000 children; p < 0.001) when compared with other groups. Conclusion Delayed ED visit of children with AA during home confinement lead to an increased rate of complicated appendicitis. It is crucial to make parents aware of the importance of early diagnosis and treatment of abdominal pain.

29 October 2019 in Frontiers in Pediatrics
Verified
Journal Article
Open access
PDF file
Carlos Delgado-MiguelCarlos Delgado-Miguel
Carlos Delgado-Miguel
AMAntonio Jesús Muñoz-Serrano
Antonio Jesús Muñoz-Serrano
VNVanesa Núñez
Vanesa Núñez
KEKarla Estefanía
Karla Estefanía
MVMaría Velayos
María Velayos
LMLeopoldo Martínez
Leopoldo Martínez
Aim of the study: Postoperative intra-abdominal abscess (PIAA) is a frequent and severe complication of acute appendicitis (AA) with peritonitis. The neutrophil-to-lymphocyte ratio (NLR) is an inflammatory marker that has been related to the development of peritonitis; however, its diagnostic role in predicting PIAA has not been evaluated. This is the first study that analyzes the usefulness of NLR as a predictor of PIAA in children operated for AA. Material and Methods: Retrospective observational study in children operated for AA in our institution during 2017–2018. Patients aged under 5 years or with incomplete laboratory determinations at hospital admission (blood count, C-reactive protein, and fibrinogen) were excluded. Demographic and laboratory parameters and the development of PIAA were analyzed. NLR was calculated by dividing the absolute number of neutrophils by the absolute number of lymphocytes. By means of ROC curves, we determined the sensitivity and specificity of the different laboratory parameters to predict the development of PIAA. Results: A total of 388 patients aged 10.5 ± 2.9 year were included. Twenty (5.2%) developed PIAA. NLR presented an area under the curve (AUC) of 0.85, significantly higher than the determination of leukocytes (AUC 0.69, p < 0.001), neutrophils (AUC 0.74, p < 0.001), fibrinogen (AUC 0.68, p < 0.001) and C-reactive protein (AUC 0.73, p < 0.001). We estimated the optimal cut-off point of NLR > 10.5, with a sensitivity of 85% and a specificity of 75.2%. Conclusions: NLR is the laboratory parameter with the highest sensitivity and specificity for predicting the development of PIAA in children operated for AA. It can be useful as a predictor of worse postoperative course.

29 July 2022 in European Journal of Pediatric Surgery
Verified
Journal Article
Closed access
PDF file
Carlos Delgado-MiguelCarlos Delgado-Miguel
Carlos Delgado-Miguel
AGAntonella García
Antonella García
BDBonifacio Delgado
Bonifacio Delgado
AMAntonio Jesús Muñoz-Serrano
Antonio Jesús Muñoz-Serrano
MMMiriam Miguel-Ferrero
Miriam Miguel-Ferrero
LMLeopoldo Martinez
Leopoldo Martinez
Objective Neutrophil-to-lymphocyte ratio (NLR) is an emerging inflammatory marker in abdominal pathologies. Ileocolic intussusception (ICI) involves a progressive intestinal inflammation, and the effectiveness of nonsurgical treatment (enema) might be related to the inflammation degree, although no previous studies have investigated this relationship. Our aim is to identify predictors of the need for surgical treatment in ICI. Materials and Methods A single-center, retrospective, case-control study was performed in children with ICI, who were treated with initial nonsurgical management between 2005 and 2019. Patients were divided in two groups: A (effective enema) and B (need for surgery). Admission demographic and clinical and laboratory data were analyzed. Specificity and sensitivity of the different parameters as predictors of the need for surgical treatment were determined by receiver operating characteristic (ROC) curves. Results A total of 511 patients were included (410: group A; 101: group B), without statistically significant demographic differences. Group B presented significantly higher frequency of vomiting, bloody stools, and longer median time since symptoms onset (24 vs. 8 hours; p < 0.001). Group B presented higher median laboratory inflammatory markers than group A: NLR (6.8 vs. 1.8; p < 0.001), neutrophils (10,148 vs. 7,468; p < 0.001), and C-reactive protein (CRP; 28.2 vs. 4.7; p < 0.001). In ROC curve analysis, NLR had an area under the curve of 0.925, higher than neutrophil count (0.776; p = 0.001), CRP (0.670; p = 0.001), and time since symptoms onset (0.673; p = 0.001). It was estimated a cut-off point of NLR greater than 4.52 (sensitivity: 73.2%; specificity: 94.5%). Conclusion High NLR values imply a high degree of bowel inflammation and might anticipate the need for surgical treatment in ICI in children. Level of Evidence III.

23 December 2021 in European Journal of Pediatric Surgery
Verified
Journal Article
Closed access
PDF file
MVMaría Velayos
María Velayos
MAMercedes Alonso
Mercedes Alonso
Carlos Delgado-MiguelCarlos Delgado-Miguel
Carlos Delgado-Miguel
KEKarla Estefanía-Fernández
Karla Estefanía-Fernández
AMAntonio Jesús Muñoz-Serrano
Antonio Jesús Muñoz-Serrano
CTCarlos A. De La Torre
Carlos A. De La Torre
Introduction In recent years, pain protocols for pectus excavatum (PE) have incorporated cryoanalgesia through thoracoscopic approach. Since 2019, ultrasound-guided percutaneous cryoanalgesia (PCr) has been applied at our institution, either on the same day as the Nuss procedure or 48 hours before surgery. We carried out a preliminary retrospective review of patients with PE in whom PCr prior to surgery was performed at our institution between 2019 and 2021. Materials and Methods Two groups were evaluated: PCr on the same day (PCrSD) and PCr 48 hours before surgery (PCr48). Despite PCr, patients were treated with “patient-controlled analgesia” (PCA) with opioids for at least 24 hours, switching to conventional intravenous analgesia and oral analgesia in the following days. Demographic, clinical-radiological variables, PCA opioid use, pain grade according to the visual analog scale (VAS), and length of stay (LOS) were compared between the groups. A total of 20 patients were included (12 with PCrSD and 8 with PCr48), without significant differences in demographics or clinical-radiological variables. The overall median time of PCr was 65 minutes (55–127), with no differences between the groups. Results PCr48 group presented with significantly lower median number of hours of continuous PCA (24 vs. 32 hours; p = 0.031), lower median number of rescue boluses (11 vs. 18; p = 0.042), lower median VAS in the early postoperative hours (2 vs. 5.5; p = 0.043), and lower median LOS (3.5 vs. 5 days). Conclusion PCr performed 48 hours prior to surgery is more effective in terms of PCA requirements, VAS, and LOS when compared with cryoanalgesia on the same day.

8 February 2022 in European Journal of Pediatric Surgery Reports
Verified
Journal Article
Open access
PDF file
Carlos Delgado-MiguelCarlos Delgado-Miguel
Carlos Delgado-Miguel
AMAntonio Jesús Muñoz-Serrano
Antonio Jesús Muñoz-Serrano
LMLucas Moratilla-Lapeña
Lucas Moratilla-Lapeña
MSMaría del Carmen Sarmiento
María del Carmen Sarmiento
MMMiriam Miguel-Ferrero
Miriam Miguel-Ferrero
LMLeopoldo Martínez
Leopoldo Martínez
Indocyanine green (ICG)-guided near-infrared fluorescence has been recently adopted in pediatric surgery, although its use in the treatment of congenital hyperinsulinism has not been reported. We present a case of focal congenital hyperinsulinism in which ICG-navigation with ICG was used during surgical treatment. A 3-month-old infant was referred to our institution from a peripheral hospital for episodes of persistent hypoglycemia since birth, with no response to intravenous treatment with diazoxide, octreotide, or hydrochlorothiazide. An abdominal positron emission tomography-computed tomography scan showed a hypermetabolic nodule in the proximal portion of the body of the pancreas, compatible with focal congenital hyperinsulinism. A heterozygous mutation in the ABCC gene (Ala1516Glyfs*19) frameshift type inherited from the father was identified, which supported this diagnosis. Laparoscopy-assisted surgery was performed with ICG-guided near-infrared fluorescence, with intravenous injection of 16 mg ICG (2 mg/mg), which allowed localization of the focal lesion in the body of the pancreas. The lesion was resected with bipolar electrocautery and intraoperative histological study confirmed complete resection. Plasma glucose values normalized 6 hours after surgery and the patient was discharged 5 days later. In conclusion, the use of ICG in the treatment of congenital hyperinsulinism helps to identify hypermetabolic pancreatic nodules, decreasing the likelihood of incomplete resection.