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Идёт набор NCT07339475

Femoral Vein Diameter to Predict Intraoperative Hypotension in Geriatric Patients Undergoing Orthopedic Surgery Under Spinal Anesthesia

Наблюдательное Femoral Vein Diameter Intraoperative Hypotension Orthopedic Surgery Spinal Anesthesia

Ориентир для пациента и семьи

Простыми словами

Автоматическая сводка по структурированным данным реестра. Она помогает сориентироваться, но не заменяет официальный протокол или оценку врача.

Что изучают
В протоколе указаны: Measurement of Femoral Vein Diameter.
Кому может быть актуально
Состояния в реестре: Femoral Vein Diameter, Intraoperative Hypotension, Orthopedic Surgery, Spinal Anesthesia. Базовые параметры: от 60 лет · Все.
Что важно проверить
Возраст, диагноз и пол — только базовые ориентиры. Предыдущее лечение, анализы и другие обязательные условия указаны ниже в критериях участия.
Где проводится
Египет
Следующий шаг
Сохраните исследование, покажите его лечащему врачу и уточните актуальный статус у исследовательского центра. Расходы, документы и поездка →
Официальное название

Evaluation of Femoral Vein Diameter to Predict Intraoperative Hypotension in Geriatric Patients Undergoing Orthopedic Surgery Under Spinal Anesthesia: A Prospective Observational Study

Обзор

The study aims to assess whether the transverse diameter of the right common femoral vein (RCFV) in the inguinal region could reflect the degree of post-spinal hypotension during elective orthopedic surgery.

Подробное описание

Spinal anesthesia is commonly used in orthopedic procedures but often results in hypotension, particularly in elderly patients due to reduced cardiovascular reserve and impaired autonomic function.

Ultrasound measurement of the right common femoral vein (RCFV) diameter has recently been proposed as a simple, non-invasive marker of intravascular volume status and a potential predictor of spinal anesthesia induced hypotension. To date, most evidence comes from obstetric populations undergoing cesarean delivery, limiting its applicability in other high-risk groups.

Вмешательства

  • Другое Measurement of Femoral Vein Diameter
    The transverse diameter of the right common femoral vein (RCFV) will be recorded 1 cm proximal to the junction with the great saphenous vein, at end-expiration.

Первичные конечные точки

  • Predictive ability of the transverse diameter of the right common femoral vein (RCFV) [Срок оценки: At end-expiration (Up to 15 minutes)]
Вторичные конечные точки (3)
  • Severity of post spinal hypotension [Срок оценки: 24 hours postoperatively]
  • Incidence of adverse events [Срок оценки: 24 hours postoperatively]
  • Requirement of rescue medications [Срок оценки: 24 hours postoperatively]

Критерии участия

Критерии включения

  • Age > 60 years.
  • American Society of Anesthesiologists (ASA) physical state I-II.
  • Body mass index (BMI) ≤35 kg/m². Patients above this value will be excluded because obesity may cause technical difficulty and poor image quality in femoral vein ultrasound assessment.
  • Elective lower-limb orthopedic surgery under spinal anesthesia.

Критерии исключения

  • Patients refusing to participate.
  • History of psychiatric illness or seizures.
  • Absolute contraindications to spinal anesthesia: infection at the puncture site, severe coagulopathy/anticoagulation \[defined as platelet count <75,000/µL, International Normalized Ratio (INR) >1.5, Activated Partial Thromboplastin Time (aPTT) >1.5 times control, or the use of anticoagulants such as warfarin, heparin, low molecular weight heparin, or direct oral anticoagulants within the recommended safety interval for neuraxial anesthesia\], severe hypovolemia, increased intracranial pressure, or known allergy to local anesthetics.
  • Severe cardiac disease, including left ventricular ejection fraction <30%, Severe valvular heart disease (e.g., critical aortic stenosis), clinically significant arrhythmias (atrial fibrillation with uncontrolled ventricular rate >120 bpm, frequent ventricular ectopy or sustained ventricular tachyarrhythmia) and congestive heart failure such as New York Heart Association (NYHA) class III-IV.
  • Severe uncontrolled hypertension, defined as persistent mean arterial pressure (MAP) ≥120 mmHg or systolic blood pressure (SBP) ≥180 mmHg and/or diastolic blood pressure (DBP) ≥110 mmHg despite medical therapy.
  • Severe respiratory diseases (Global Initiative for Chronic Obstructive Lung Disease (GOLD) stage III-IV chronic obstructive pulmonary disease, or forced vital capacity (FVC) <50% predicted).
  • Baseline bradycardia (<50) or mean arterial blood pressure less than 60mmHg.
  • Emergency surgeries.

Критерии приведены из реестра в оригинале (на английском). Окончательную оценку соответствия проводит исследовательский центр.

Здоровые добровольцы: Нет

Дизайн исследования

Модель наблюдения
Когортное

Центры проведения

Египет · 1 центр
  • Cairo University — Cairo

Идентификаторы

NCT: NCT07339475 · MS-640-2025

Первоисточники (государственные реестры)

Открыть это исследование на ClinicalTrials.gov ↗