Transplant renal artery stenosis (TRAS) is the most frequent vascular complication after kidney t... more Transplant renal artery stenosis (TRAS) is the most frequent vascular complication after kidney transplantation (KT) and has been associated with potentially reversible refractory hypertension, graft dysfunction, and reduced patient survival. The aim of the study is to describe the outcomes of a standardized Duplex Ultrasound- (DU-) based screening protocol for early diagnosis of TRAS and for selection of patients potentially requiring endovascular intervention. We retrospectively reviewed our prospectively collected database of KT from January 1998 to select patients diagnosed with TRAS. The follow-up protocol was based on a risk-adapted, dynamic subdivision of eligible KT patients in different risk categories (RC) with different protocol strategies (PS). Of 598 patients included in the study, 52 (9%) patients had hemodynamically significant TRAS and underwent percutaneous angioplasty (PTA) and stent placement. Technical and clinical success rates were 97% and 90%, respectively. 7 ...
INTRODUCTION AND OBJECTIVES: Transplant renal artery stenosis (TRAS) is the most frequent vascula... more INTRODUCTION AND OBJECTIVES: Transplant renal artery stenosis (TRAS) is the most frequent vascular complication after kidney transplantation (KT). To date, angiography remains the gold standard for diagnosis and guidance of percutaneous intervention. A critical unmet need is to select a non-invasive diagnostic work-up for early diagnosis of TRAS selecting those patients that require further invasive procedures. The aim of the study is to describe the outcomes of a standardized screening protocol of TRAS in patients undergoing KT.
Transplant renal artery stenosis (TRAS) is the most frequent vascular complication after kidney t... more Transplant renal artery stenosis (TRAS) is the most frequent vascular complication after kidney transplantation (KT) and has been associated with potentially reversible refractory hypertension, graft dysfunction, and reduced patient survival. The aim of the study is to describe the outcomes of a standardized Duplex Ultrasound- (DU-) based screening protocol for early diagnosis of TRAS and for selection of patients potentially requiring endovascular intervention. We retrospectively reviewed our prospectively collected database of KT from January 1998 to select patients diagnosed with TRAS. The follow-up protocol was based on a risk-adapted, dynamic subdivision of eligible KT patients in different risk categories (RC) with different protocol strategies (PS). Of 598 patients included in the study, 52 (9%) patients had hemodynamically significant TRAS and underwent percutaneous angioplasty (PTA) and stent placement. Technical and clinical success rates were 97% and 90%, respectively. 7 ...
Transplant renal artery stenosis (TRAS) is the most frequent vascular complication after kidney t... more Transplant renal artery stenosis (TRAS) is the most frequent vascular complication after kidney transplantation (KT) and has been associated with potentially reversible refractory hypertension, graft dysfunction, and reduced patient survival. The aim of the study is to describe the outcomes of a standardized Duplex Ultrasound- (DU-) based screening protocol for early diagnosis of TRAS and for selection of patients potentially requiring endovascular intervention. We retrospectively reviewed our prospectively collected database of KT from January 1998 to select patients diagnosed with TRAS. The follow-up protocol was based on a risk-adapted, dynamic subdivision of eligible KT patients in different risk categories (RC) with different protocol strategies (PS). Of 598 patients included in the study, 52 (9%) patients had hemodynamically significant TRAS and underwent percutaneous angioplasty (PTA) and stent placement. Technical and clinical success rates were 97% and 90%, respectively. 7 ...
ing from the proximal internal carotid artery , associated with the bilateral absence of the V1-V... more ing from the proximal internal carotid artery , associated with the bilateral absence of the V1-V2 segments of vertebral artery , was found. The perfusion of the vertebrobasilar system was completely supplied by the internal carotid arteries. No cerebral ischemic lesions were found by means of computed tomography. The patient, a candidate for an aortobifemoral bypass grafting procedure, was submitted to prophylactic right CEA. Intraoperative somatosensorial-evoked potentials (SEPs) were used to monitor the patient's cerebral function. The stump pressure was also monitored. After carotid clamping, the stump pressure was 75 mm Hg, whereas the systemic pressure was 117 mm Hg. However, an indwelling shunt was applied 4 minutes from clamping, for significant flattening of N20/P25 complex of SEPs. A primary closure of the arteriotomy was performed. No neurological deficits were present when the patient awoke. The postoperative period was free of complications, and the patient was discharged on the fourth postoperative day.
We sought to determine the results of surgical treatment of patients with tetralogy of Fallot and... more We sought to determine the results of surgical treatment of patients with tetralogy of Fallot and pulmonary atresia with or without major aortopulmonary collateral arteries, to clarify variables affecting early and late mortality, and to expose late, nonfatal events affecting surgical patients.
Transplant renal artery stenosis (TRAS) is the most frequent vascular complication after kidney t... more Transplant renal artery stenosis (TRAS) is the most frequent vascular complication after kidney transplantation (KT) and has been associated with potentially reversible refractory hypertension, graft dysfunction, and reduced patient survival. The aim of the study is to describe the outcomes of a standardized Duplex Ultrasound- (DU-) based screening protocol for early diagnosis of TRAS and for selection of patients potentially requiring endovascular intervention. We retrospectively reviewed our prospectively collected database of KT from January 1998 to select patients diagnosed with TRAS. The follow-up protocol was based on a risk-adapted, dynamic subdivision of eligible KT patients in different risk categories (RC) with different protocol strategies (PS). Of 598 patients included in the study, 52 (9%) patients had hemodynamically significant TRAS and underwent percutaneous angioplasty (PTA) and stent placement. Technical and clinical success rates were 97% and 90%, respectively. 7 ...
INTRODUCTION AND OBJECTIVES: Transplant renal artery stenosis (TRAS) is the most frequent vascula... more INTRODUCTION AND OBJECTIVES: Transplant renal artery stenosis (TRAS) is the most frequent vascular complication after kidney transplantation (KT). To date, angiography remains the gold standard for diagnosis and guidance of percutaneous intervention. A critical unmet need is to select a non-invasive diagnostic work-up for early diagnosis of TRAS selecting those patients that require further invasive procedures. The aim of the study is to describe the outcomes of a standardized screening protocol of TRAS in patients undergoing KT.
Transplant renal artery stenosis (TRAS) is the most frequent vascular complication after kidney t... more Transplant renal artery stenosis (TRAS) is the most frequent vascular complication after kidney transplantation (KT) and has been associated with potentially reversible refractory hypertension, graft dysfunction, and reduced patient survival. The aim of the study is to describe the outcomes of a standardized Duplex Ultrasound- (DU-) based screening protocol for early diagnosis of TRAS and for selection of patients potentially requiring endovascular intervention. We retrospectively reviewed our prospectively collected database of KT from January 1998 to select patients diagnosed with TRAS. The follow-up protocol was based on a risk-adapted, dynamic subdivision of eligible KT patients in different risk categories (RC) with different protocol strategies (PS). Of 598 patients included in the study, 52 (9%) patients had hemodynamically significant TRAS and underwent percutaneous angioplasty (PTA) and stent placement. Technical and clinical success rates were 97% and 90%, respectively. 7 ...
Transplant renal artery stenosis (TRAS) is the most frequent vascular complication after kidney t... more Transplant renal artery stenosis (TRAS) is the most frequent vascular complication after kidney transplantation (KT) and has been associated with potentially reversible refractory hypertension, graft dysfunction, and reduced patient survival. The aim of the study is to describe the outcomes of a standardized Duplex Ultrasound- (DU-) based screening protocol for early diagnosis of TRAS and for selection of patients potentially requiring endovascular intervention. We retrospectively reviewed our prospectively collected database of KT from January 1998 to select patients diagnosed with TRAS. The follow-up protocol was based on a risk-adapted, dynamic subdivision of eligible KT patients in different risk categories (RC) with different protocol strategies (PS). Of 598 patients included in the study, 52 (9%) patients had hemodynamically significant TRAS and underwent percutaneous angioplasty (PTA) and stent placement. Technical and clinical success rates were 97% and 90%, respectively. 7 ...
ing from the proximal internal carotid artery , associated with the bilateral absence of the V1-V... more ing from the proximal internal carotid artery , associated with the bilateral absence of the V1-V2 segments of vertebral artery , was found. The perfusion of the vertebrobasilar system was completely supplied by the internal carotid arteries. No cerebral ischemic lesions were found by means of computed tomography. The patient, a candidate for an aortobifemoral bypass grafting procedure, was submitted to prophylactic right CEA. Intraoperative somatosensorial-evoked potentials (SEPs) were used to monitor the patient's cerebral function. The stump pressure was also monitored. After carotid clamping, the stump pressure was 75 mm Hg, whereas the systemic pressure was 117 mm Hg. However, an indwelling shunt was applied 4 minutes from clamping, for significant flattening of N20/P25 complex of SEPs. A primary closure of the arteriotomy was performed. No neurological deficits were present when the patient awoke. The postoperative period was free of complications, and the patient was discharged on the fourth postoperative day.
We sought to determine the results of surgical treatment of patients with tetralogy of Fallot and... more We sought to determine the results of surgical treatment of patients with tetralogy of Fallot and pulmonary atresia with or without major aortopulmonary collateral arteries, to clarify variables affecting early and late mortality, and to expose late, nonfatal events affecting surgical patients.
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