Tammam Youssef

Tammam Youssef


Research Focus & Metrics

Academic Career Length

3Years (2024-Present)

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

Representative Publications

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Verified
Journal Article
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IMIrina Maria Margarint
Irina Maria Margarint
TYTammam Youssef
Tammam Youssef
MRMircea Robu
Mircea Robu
IRIulian Rotaru
Iulian Rotaru
APAlexandru Popescu
Alexandru Popescu
Radu VladareanuRadu Vladareanu
Radu Vladareanu
The surgical management of aortic coarctation in newborns needs to ensure postoperative evolution and long-term results as much as possible. Patients with a Gothic arch have a higher rate of postoperative hypertension, while newborns with a bovine arch have higher rates of restenosis and, thus, an additional risk of mortality. Late hypertension, even in anatomically successfully repaired patients, confers a high risk for cardiovascular events. This review of the literature focuses on the management of aortic coarctations associated with hypoplastic arch and particular arch anatomies, focusing on surgical techniques and their outcomes.

16 April 2025 in Life
Verified
Journal Article
Open access
PDF file
IMIrina Maria Margarint
Irina Maria Margarint
TYTammam Youssef
Tammam Youssef
IRIulian Rotaru
Iulian Rotaru
APAlexandru Popescu
Alexandru Popescu
OUOlguta Untaru
Olguta Untaru
Radu VladareanuRadu Vladareanu
Radu Vladareanu
Background: Coarctation of the aorta (CoA) represents 5% to 7% of all congenital heart diseases. Surgery and interventional methods offer great short-term results, but the occurrence of postoperative hypertension associated with cardiovascular and cerebral vascular disease increases mortality and morbidity in the long term. This study aims to investigate risk factors associated with postoperative hypertension in pediatric patients with early repair of isolated aortic coarctation. Subjects and Methods: A total of 41 patients with isolated aortic coarctation were included. The mean age was 35.3 ± 46.34 days. Early repair under one month was performed in 65.9% of patients. In all except two patients, end-to-end anastomosis was used. A follow-up at two years revealed an incidence of 58.5% of hypertension. Using logistic regression, preoperative renin plasma concentration above the upper normal level (46.1 μUI/mL) was independently associated with the occurrence of hypertension (OR = 2.49, 95% CI = 2.001–5.03, p = 0.001). Conclusion: Coarctation of the aorta is not just a simple mechanical obstruction of the aorta and should be seen and managed as a systemic disease. Abnormal preoperative renin concentrations were independently associated with the occurrence of HT at follow-up, suggesting that vascular dysfunction could play a role in hypertension development after successful CoA repair, negatively influencing the long-term prognostic of these patients.

21 September 2025 in Life
Verified
Journal Article
Open access
PDF file
IMIrina Maria Margarint
Irina Maria Margarint
VIVlad Anton Iliescu
Vlad Anton Iliescu
TYTammam Youssef
Tammam Youssef
IRIulian Rotaru
Iulian Rotaru
APAlexandru Popescu
Alexandru Popescu
Radu VladareanuRadu Vladareanu
Radu Vladareanu
Background: Despite anatomically successful surgical correction, postoperative hypertension remains a significant concern in patients with coarctation of the aorta, even when repair is performed during infancy. Inflammation and neurohormonal activation have been proposed as contributing mechanisms. Objective: To investigate the association between preoperative inflammatory biomarkers—specifically the interleukin-6 (IL-6) to tumor necrosis factor-alpha (TNF-α) ratio—and the development of hypertension in patients with successful isolated coarctation of the aorta repair under one year of age. Methods: This observational study included 42 infants with isolated CoA. Clinical, echocardiographic, and biochemical parameters were analyzed. Preoperative plasma levels of IL-6, TNF-α, von Willebrand factor (vWF), and renin were measured. Patients were classified based on hypertensive status at 2-year follow-up. Univariate and multivariate logistic regression analyses were performed to identify predictors of postoperative hypertension. Results: Hypertension was diagnosed in 16 out of 41 patients (39%) at follow-up. A preoperative IL-6/TNF-α ratio > 2 was an independent predictor in multivariate analysis for postoperative HT (OR = 6.1, 95% CI = 6.23–9.31, p = 0.02). Conclusions: In this small single-center cohort, an elevated IL-6/TNF-α ratio was associated with postoperative hypertension after coarctation repair. These exploratory findings should be considered hypothesis-generating and warrant confirmation in larger, multicenter studies.

17 January 2025 in Life
Verified
Journal Article
Open access
PDF file
IMIrina Maria Margarint
Irina Maria Margarint
TYTammam Youssef
Tammam Youssef
CFCristina Filip
Cristina Filip
ABAna Mihaela Bizubac
Ana Mihaela Bizubac
APAlexandru Popescu
Alexandru Popescu
Radu VladareanuRadu Vladareanu
Radu Vladareanu
Desmoid tumors are a rare entity, especially in the pediatric population. There are no reports of such a tumor in newborns. They are associated with high rates of morbidity and mortality, even though they are benign soft tissue tumors. This is due to them exhibiting locally aggressive growth with the compression or invasion of adjacent structures. Abdominal localization is most commonly reported, although there are reports of mediastinal desmoid tumors. We present the case of a 6-day male patient with a mediastinal desmoid tumor that led to severe aortic coarctation with hemodynamic instability. The tumor also compressed the left pulmonary artery and obstructed the left main bronchus. The initial management consisted of successful emergency surgery with partial resection of the tumor mass and coarctation repair. In the postoperative setting, the patient evolved with severe respiratory dysfunction which was managed with tracheostomy, allowing weaning the child from the mechanical ventilation one month after surgery, along with chemotherapy. We also review the literature, focusing on the management of desmoid tumors.