Prospective Cohort Study of Objective Cardiac and Vascular Changes in Pheochromocytoma and Paraganglioma and Their Reversal Following Curative Surgery
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 入组人数
- 55
- 试验地点
- 1
- 主要终点
- Change of Systolic function indices measurement by 2D-Echocardiography from Baseline versus after alpha blockade and after surgery
研究概览
简要总结
PHEOCHROMOCYTOMA (PCC)/ PARAGANGLIOMA are catecholamine secreting tumors with varied manifestations. Besides hypertension, PCC patients may have subclinical to overt cardiac and vascular dysfunction, which are important to recognize to minimize perioperative morbidity and mortality. Cardiovascular (CV) dysfunction can be in the form of hypertension, left ventricular (LV) hypertrophy, heart failure, cardiomyopathy, dysrhythmias, angina and Myocardial infarction. Literature search revealed a few retrospective and a few prospective studies, including one prospective follow up study conducted at SGPGIMS to document CV changes in PCC. Our institutional study was the first to document the nature and extent of CV dysfunction and cardiomyopathy and their reversal after surgical cure. The studies revealed that PCC patients had significantly higher LV mass index, higher LV diastolic dysfunction, subclinical impaired LV systolic function. Earlier studies postulated apparent improvement in various cardiac indices even with selective α-blockade and continued after surgical cure, with near normalization at 3 -6 months postoperatively. Detailed cardiac and vascular evaluation in PCC patients can be of help in preoperative optimization of cardiac risk and may provide prognostic information The literature on PCC-mediated CV dysfunction and catecholamine cardiomyopathy is largely limited to case reports and retrospective studies, with few reports of their reversal after curative PCC operations. Whether the duration of disease influence the function of heart was not apparently addressed in earlier trials. Trials that established the differences in the degree of cardiac dysfunction between normotensive and hypertensive PCC patients involved smaller proportion of study subjects. Sub clinical changes in endomyocardium was presumed but not objectively assessed and hence its reversal after surgical cure is uncertain.
The aim of this research is to study the cardiac and vascular changes in Pheochromocytoma/ Paraganglioma patients and their reversal following curative surgery
详细描述
The aim of this research is to study the cardiac and vascular changes in Pheochromocytoma/ Paraganglioma patients and their reversal following curative surgery
This prospective, case-control study is conducted at SGPGIMS, Lucknow, India, tertiary care referral institute, between January 2019 and September 2021 after approval from institutional ethics committee. The study group includes 50 biochemically and histopathology proven PCC /Paraganglioma patients, who after 1 to 3 weeks of α-adrenoceptor blockade with oral prazosin undergo primary laparoscopic or open surgery. Cure of hypercatecholaminism will be documented by normal 24-hour urinary fractionated metanephrine values at 7-10 days postoperatively.
Two contemporary age- and gender-matched control groups includes 10 newly detected (withtin 3 months) Essential Hypertensive (E-HT) patients, who will undergo treatment with standard anti- HT medications and 10 Healthy individuals (normal in physical examination, ECG , Echo), that include hospital staff nurses, technicians, doctors whom would be requested to volunteer.
METHODOLOGY
Patients in the study group, besides the usual evaluation of PCC, also undergo detailed cardiac and vascular evaluation, at diagnosis, at 7- 10 days of α-blockade, and 7 days, 3 and 6 months post adrenalectomy/ Paraganglioma excision and in control groups - E-HT controls, cardiac evaluation is done at diagnosis and after 3 months of anti HT medications ; in Healthy individuals, cardiac evaluation is done at the start of study and after 6 months.
研究设计
- 研究类型
- Observational
- 观察模型
- Cohort
- 时间视角
- Prospective
入排标准
- 年龄范围
- 7 Years 至 —（Child, Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •Patients diagnosed of Pheochromocytoma (PCC) / Paraganglioma (secretory, extra adrenal PCC) Patients willing to consent for the study Patients not on α-blockade at the time of recruitment into study, can be on any other anti hypertensives
排除标准
- •Non-secretory Paraganglioma Patients who refuse consent, not compliant in follow up Patients who are on α- blockade already Essential Hypertensives with compounding comorbidities that could interfere with cardio vascular evaluation
结局指标
主要结局
Change of Systolic function indices measurement by 2D-Echocardiography from Baseline versus after alpha blockade and after surgery
时间窗: at baseline (Day 1), at Day 7- 10 after initiation of α-blockade, and 7 days, 3 and 6 months post adrenalectomy/ Paraganglioma excision
Left ventricle end systolic and end diastolic diameter in millimeter
Change in Speckle tracking echocardiographic parameters at Baseline versus after alpha blockade and at after surgery
时间窗: at baseline (Day 1), at Day 7- 10 after initiation of α-blockade, and 7 days, 3 and 6 months post adrenalectomy/ Paraganglioma excision
Left ventricle global longitudinal strain in percentage
Change of Systolic function indices measurement by 2D-Echocardiography from baseline versus after alpha blockade and after surgery
时间窗: at baseline (day 1), at Day 7- 10 after initiation of α-blockade, and 7 days, 3 and 6 months post adrenalectomy/ Paraganglioma excision
Left ventricle end systolic and end diastolic volume dimensions in milliliter
Change of Systolic function index measurement by 2D-Echocardiography from Baseline at after alpha blockade and at after surgery
时间窗: at baseline (Day1), at Day 7- 10 after initiation of α-blockade, and 7 days, 3 and 6 months post adrenalectomy/ Paraganglioma excision
Left ventricle Ejection fraction by Simpsons method in percentage
Change of Diastolic function index measurement by pulsed wave doppler echocardiography from baseline versus after alpha blockade and after surgery
时间窗: at baseline (Day 1), at Day 7- 10 after initiation of α-blockade, and 7 days, 3 and 6 months after adrenalectomy/ Paraganglioma excision
Peak velocities of the early (E) and Late phase (A) of the mitral valve inflow pattern and their ratio in centimeter per second
Change of Diastolic function indices measurement by pulsed wave doppler echocardiography from baseline versus after alpha blockade and after surgery
时间窗: at baseline (day 1), at day 7- 10 after initiation of α-blockade, and 7 days, 3 and 6 months after adrenalectomy/ Paraganglioma excision
Flow rate across mitral valve in centimeter per second and deceleration time in millisecond
Change in Speckle tracking echocardiographic parameters from Baseline in comparison to after alpha blockade and after surgery
时间窗: at baseline (Day 1), at Day 7- 10 after initiation of α-blockade, and 7 days, 3 and 6 months post surgery
Left ventricle global circumferential strain in percentage
Change in Vascular Function indices by doppler Ultrasonography of the brachial artery from baseline at after alpha blockade and at after surgery
时间窗: at baseline (Day 1), at Day 7- 10 after initiation of α-blockade, and 7 days, 3 and 6 months post adrenalectomy/ Paraganglioma excision
Flow mediated dilation of brachial artery diameter pre and post sublingual isosorbide dinitrate in millimeter
次要结局
未报告次要终点
研究者
Gaurav Agarwal
Professor of Endocrine Surgery
Sanjay Gandhi Postgraduate Institute of Medical Sciences