Publications by authors named "Ramón Pérez-Caballero Martínez"

7 Publications

  • Page 1 of 1

Microcirculatory Changes in Pediatric Patients During Congenital Heart Defect Corrective Surgery.

J Cardiovasc Transl Res 2021 May 4. Epub 2021 May 4.

Paediatric Intensive Care Unit, Gregorio Marañón General University Hospital, Calle Dr. Castelo 47, 28007, Madrid, Spain.

A prospective, observational single-center study was carried out. Pediatric patients undergoing congenital heart defect surgery were evaluated before, during, and after surgery. At each time point, sublingual microcirculation and clinical parameters were assessed, along with analytical variables. Twenty-four patients were included. All microcirculatory parameters worsened during cardiopulmonary bypass and returned to baseline values after surgery (p ≤ 0.001). In the intraoperative evaluation, body temperature correlated with perfused small vessel density (p = 0.014), proportion of perfused small vessels (p < 0.001), small vessel microvascular flow index (p = 0.003), and small vessel heterogeneity index (p < 0.002). Patients with cyanotic disease exhibited higher small vessel density (p < 0.008) and higher density of perfused small vessels (p < 0.022) at baseline, and a lower microvascular flow index (p = 0.022) and higher heterogeneity (p = 0.026) in the intraoperative phase. Children with congenital heart disease exhibited decreased vascular density and microvascular blood flow and increased heterogeneity during cardiopulmonary bypass. All these parameters returned to baseline values after surgery.
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http://dx.doi.org/10.1007/s12265-021-10132-wDOI Listing
May 2021

Myocarditis, flail tricuspid valve, and normal rhythm: an exceptional form of neonatal cardiac lupus.

Cardiol Young 2017 Sep 2;27(7):1419-1422. Epub 2017 May 2.

1Pediatric Cardiac Surgery Department,Gregorio Marañón Hospital,Madrid,Spain.

Neonatal cardiac lupus is a rare, passively acquired autoimmune disease. We report a case of in utero myocarditis, confirmed postnatally, with papillary muscle rupture and severe tricuspid regurgitation after birth in the absence of conduction disturbances. Tricuspid repair was successfully performed with polytetrafluoroethylene neochordae. In this article, we discuss the pathophysiology, medical and surgical management, and implications at follow-up in this unique scenario.
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http://dx.doi.org/10.1017/S1047951117000543DOI Listing
September 2017

Pediatric Heart Transplantation With Lecompte Maneuver Owing to Extremely Oversized Donor Allograft.

Ann Thorac Surg 2017 Apr;103(4):e345-e347

Pediatric Cardiac Surgery Department, Gregorio Marañón Hospital, Madrid, Spain; Gregorio Marañón Health Research Institute, Madrid, Spain.

The techniques and outcomes of heart transplantation in the pediatric population continue to improve over the years, although the supply of organs remains limited. Donor-to-recipient size matching is critical, especially in neonates and small infants. We present a novel strategy for heart transplantation that includes the Lecompte maneuver because of the features of the donor allograft available in a 8-month-old patient with a cardiac fibroma. We discuss the basis principles for extending the indication of this procedure to exceptional transplantation scenarios and describe the results at long-term follow-up.
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http://dx.doi.org/10.1016/j.athoracsur.2016.08.041DOI Listing
April 2017

Combined Ablation and Exclusion of the Left Atrial Appendage in a Pediatric Patient: A Minimally Invasive Simplified Approach.

Ann Thorac Surg 2016 Jun;101(6):2379-82

Department of Pediatric Cardiac Surgery, Gregorio Marañón Hospital, Madrid, Spain.

We present the first reported case of totally video-assisted thoracoscopic surgery for combined ablation and external exclusion without appendectomy of the left atrial appendage. We encourage the use of video-assisted thoracoscopic surgery for a combined procedure of epicardial radiofrequency ablation and external exclusion without appendectomy to achieve a safe and complete electrical isolation of the left atrial appendage in children with focal atrial tachycardia. In our opinion, the external exclusion of the appendage has several advantages: it presents minimal risk of bleeding (especially in the pediatric population), and the clip can be retrieved if the circumflex artery is distorted.
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http://dx.doi.org/10.1016/j.athoracsur.2015.08.056DOI Listing
June 2016

End-stage ischemic heart failure and Williams-Beuren syndrome: A unique scenario for pediatric heart transplantation.

Pediatr Transplant 2016 May 25;20(3):472-6. Epub 2016 Feb 25.

Pediatric Cardiac Surgery Department, Gregorio Marañón Hospital, Madrid, Spain.

WBS is a rare disorder caused by mutations in the chromosomal sub-band 7q11.23 involving the elastin gene. The clinical features (craniofacial, developmental, and cardiovascular abnormalities) are variable. The association with cardiac anomalies is a well-recognized feature, and SVAS is the most common cardiac defect found. End-stage ischemic heart disease is unusual in this setting but when it occurs, OHT remains the final therapeutic option. This decision can be difficult to determine, and it must be tailored to the individual patient based on the clinical status and concomitant cardiovascular and multisystem lesions. To date, no cases of OHT in patients with WBS have been described. We present a 14-month-old patient with WBS who developed severe LV dysfunction secondary to ischemia following a complex staged surgery for SVAS repair. He underwent successful OHT with no post-operative complications, and at three-month follow-up, he remains asymptomatic on standard immunosuppressive therapy. This case constitutes the first demonstration that OHT may be indicated for extended survival in selected children with WBS and we discuss the basic principles for extending the indication for OHT to this scenario as well as the particularities for post-transplant care.
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http://dx.doi.org/10.1111/petr.12694DOI Listing
May 2016

Orthotopic Heart Transplantation in an Adult Patient with Heterotaxy Syndrome: Surgical Implications.

J Card Surg 2015 Dec 8;30(12):910-2. Epub 2015 Oct 8.

Department of Congenital Cardiac Surgery, Gregorio Marañón Hospital, Madrid, Spain.

Modified techniques for orthotopic heart transplantation are mandatory when complex congenital anomalies are associated in adult patients. An unusual case of a heterotaxy syndrome and dilated cardiomyopathy following mitral ring annuloplasty is presented in a 62-year-old male. Orthotopic cardiac transplantation was performed by using a modified operative strategy: selective peripheral and central venous cannulation according to the thoraco-abdominal venous challenges, biatrial technique, and preservation of venous drainage via the native coronary sinus. We discuss the anatomical features of heterotaxy in adult patients and surgical approaches when heart transplantation is needed.
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http://dx.doi.org/10.1111/jocs.12651DOI Listing
December 2015

Modified Fontan Conversion: An Alternative Technique for Adult Patients.

J Card Surg 2015 Jul 13;30(7):605-7. Epub 2015 May 13.

Cardiac Surgery Department, Gregorio Marañón Hospital, Madrid, Spain.

A need persists for Fontan conversion that provides alternative approaches for the individual anatomical challenges occurring in these unusual and complex adult patients. The pulmonary arteries present unique variations and the surgical technique needs to be intraoperatively addressed. We describe a technique for Fontan conversion for performing the distal anastomosis of the extracardiac conduit, allowing adequate matching to the pulmonary arteries and preserving an optimal flow into the Fontan circuit.
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http://dx.doi.org/10.1111/jocs.12564DOI Listing
July 2015