Active clinical trials for "Hypercapnia"

The aim of the study is to compare the measurement of peripheral blood oxygen saturation using a smartwatch with a medical-grade pulse oximeter.

In the emergency department and intensive care unit, blood gas analysis is a crucial tool in the assessment of critically ill patients. Blood gas analysis is quick and repeatable at the bedside. The sampling can be done from both arterial and venous samples, with arterial samples generally considered to be more reliable and by that widely used as the standard method. The purpose of this project is to compare venous and arterial blood gas parameters in undifferentiated, critically ill patients. We plan to evaluate the correlation between different parameters through a prospective observational study. In particular, carbon dioxide partial pressure (pCO2) correlation between venous and arterial samples is investigated by using and comparing different conversion models proposed in the literature. 250 patients deemed to be in need of arterial blood gas sampling based on their clinical condition will be included in a consecutive fashion at all hours. The long-term goal is to clinically translate the findings into a limitation on the use of arterial sampling, which could potentially reduce pain and complication risks in the many patients who undergo arterial blood gas sampling every day.

For some upper ureteral and renal stones,ureteroscopic lithotripsy needs to be performed under general anesthesia with interrupted suspension of mechanical ventilation, which could result in hypercapnia and hypoxia. In this study, the investigators hypothesize that 10 cmH2O PEEP added to the respiratory circuit with 1 L/min 100% oxygen might extend the time of ventilation suspension but have no effect on carbon dioxide retention in blood.

Evaluation of Safety and Efficacy of Short time TNI Treatment in Patients with COPD and hypercapnia. Acute testing of oxygen demand using TNI vs. standard oxygen application in stable COPD patients with hypercapnia.

A retrospective cohort study of all patients treated for type II (hypercapnic) respiratory failure with either High-Flow Oxygen Therapy or Non-Invasive Ventilation in a general adult hospital.

In patients suffering from hypercapnic respiratory failure and treated by non invasive ventilation (NIV), the interest of using transcutaneous CO2 measurement to evaluate PaCO2 and PaCO2 variation over time is unknown and will be evaluated in this study. Measurements will be done during one-hour NIV treatments.

The aim of this study is to describe the pulmonary hemodynamic evolution at rest and during a short constant load exercise in 4 conditions : normoxia hypoxia hypercapnia association hypoxia and hypercapnia

Prospective observational cohort study of patients admitted to hospital with suspected hypercapnic respiratory failure and requiring treatment with non-invasive ventilation (NIV) as part of standard, routine management. Contemporaneous blood gas samples will be obtained via arterial, capillary, and venous methods. The venous samples will undergo mathematical arterialisation via the v-TAC system. In line with standard medical care, arterial samples will be obtained before starting NIV and at two set points afterwards (day 1 post-NIV, and pre-discharge). Pre-existing clinical thresholds will be used to assess the reliability of v-TAC against ABG, the existing gold standard and will conduct a retrospective model of decision-making once the blood sampling component of the study is concluded.

Patients with AECOPD and NIV failure and in absence will be treated with NHF device. Inclusion criteria are pH < 7,38 and pCO2 > 45 mm Hg. Patients were treated if pH >7,38 or refusal of therapy.

In patients treated by Non invasive ventilation (NIV) due to acute hypercapnic respiratory failure, the interest of using the End-tidal Co2 measurement device "Capnostream" to evaluate PaCo2 and PaCo2 variations over time will be evaluated. Measurements will be done under normal expiration and under prolonged active and passive expiration maneuvers.