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Набор скоро начнётся NCT07487324

Oxygenation in Posterior Stabilization Surgery

Наблюдательное Oxygen Oxygen Saturation

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: blood gase.
Кому может быть актуально
Состояния в реестре: Oxygen, Oxygen Saturation. Базовые параметры: 18 лет — 80 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
Turkey (Türkiye)
Следующий шаг
Сохраните исследование, покажите его лечащему врачу и уточните актуальный статус у исследовательского центра. Расходы, документы и поездка →
Официальное название

Factors Determining Oxygenation in Posterior Stabilization Surgery: The Role of Positioning and Mechanical Ventilation Parameters

Обзор

This study aims to evaluate the effects of prone positioning on oxygenation, ventilation, and hemodynamic parameters in patients undergoing posterior stabilization surgery under general anesthesia. By comparing routine anesthesia and monitoring data obtained in the supine and prone positions, the study seeks to determine how positional changes influence respiratory mechanics and perioperative physiological stability.

Подробное описание

The prone position is frequently used during posterior stabilization surgery, yet it is associated with important physiological changes that may affect both respiratory and hemodynamic function under general anesthesia. Previous studies have shown that prone positioning may improve ventilation-perfusion matching, increase functional residual capacity, and enhance oxygenation. At the same time, position-related alterations in thoracic mechanics, airway pressures, venous return, and cardiovascular parameters may influence intraoperative management.

This study is designed to comprehensively assess the physiological effects of prone positioning in anesthetized patients undergoing posterior stabilization surgery. Routine anesthesia and monitoring data collected during mechanical ventilation will be analyzed and compared between the supine and prone positions. Particular focus will be placed on oxygenation, ventilation variables, respiratory mechanics, and hemodynamic parameters in order to evaluate the impact of positional change.

In addition, the study aims to identify which clinical and monitoring findings should be prioritized during anesthetic management of patients in the prone position. By clarifying the relationship between positioning and perioperative physiological responses, the study seeks to contribute to safer anesthetic practice and to support the maintenance of adequate oxygenation and hemodynamic stability throughout surgery.

Вмешательства

  • Другое blood gase
    Arterial blood gas samples will be obtained from patients, and alveolar oxygenation ratios will be compared between the supine and prone positions.

Первичные конечные точки

  • Change in alveolar oxygenation between supine and prone positions [Срок оценки: within 20 minutes after anesthesia induction]
Вторичные конечные точки (1)
  • Change in optic nerve sheath diameter between supine and prone positions [Срок оценки: intraoperatively]

Критерии участия

Критерии включения

Patients aged 18 to 75 years Patients classified as ASA physical status I, II, or III according to the American Society of Anesthesiologists Patients undergoing posterior stabilization surgery Patients who voluntarily agreed to participate in the study Patients with a body mass index (BMI) <35 kg/m² Patients followed with a standard mechanical ventilation procedure

Критерии исключения

  • \- ASA 4 olarak değerlendirilenler
  • Anestezik ajan alerjisi olanlar
  • Kanama diatezi bozukluğu olanlar
  • Cerrahi süresi 3 saatin üstünde olanlar
  • Bilinen ileri akciğer hastalığı olanlar (intertisyel akciğer hastalığı, ileri düzey KOAH, ileri düzey astım vb)
  • VKI≥35 olanlar
  • Obstrüktif uyku apne sendromu tanısı olanlar
  • Toraks deformitesi olanlar
  • Ciddi kalp yetmezliği öyküsü olanlar (EF<30)
  • Şiddetli anemi öyküsü olanlar (Hg<8 mg/dl)
  • Cerrahi operasyon sırasında kan transfüzyonu ihtiyacı olan hastalar

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

Здоровые добровольцы: Нет

Дизайн исследования

Модель наблюдения
Когортное

Центры проведения

Turkey (Türkiye) · 1 центр
  • Sakarya Universt — Sakarya

Публикации

  • Radstrom M, Loswick AC, Bengtsson JP. Respiratory effects of the kneeling prone position for low back surgery. Eur J Anaesthesiol. 2004 Apr;21(4):279-83. doi: 10.1017/s0265021504004053. PMID 15109190

Идентификаторы

NCT: NCT07487324 · SAU-ANE-EG-01

Первоисточники (государственные реестры)

Открыть это исследование на ClinicalTrials.gov ↗