Breathing carbon dioxide measurement to detect lung high blood pressure

This study looks at patterns from specialized lung scan tests to help diagnose chronic thromboembolic pulmonary hypertension (a long-term problem with blood flow in the lungs after blood clots). If your results suggest this condition and you need a procedure to check heart pressure, you may be asked to join so the researchers can improve diagnosis.

This study checks whether measuring blood gases from a specific heart “wedge” position during a right heart catheter test gives useful information. It may help doctors understand how blood and oxygen are doing in certain heart and lung conditions.

This trial looks at whether a new way of measuring carbon dioxide (CO2) in the blood can help doctors quickly understand why a patient is short of breath. It is for adults who come to the emergency room with trouble breathing, and it involves doing an extra analysis on a blood sample that would be taken anyway.

This study aims to better understand how COPD affects the blood vessels in your lungs by looking at measurements from a right heart catheterization. It may help doctors identify a specific pattern of lung and heart problems in people with COPD.

This study checks if a noninvasive device that measures carbon dioxide (CO2) in your breath can accurately track CO2 changes in your blood during surgery where only one lung is ventilated. The goal is to see if it can replace frequent blood tests.

This study tests if breathing in carbon dioxide can help doctors see how well blood flows to your heart muscle. It is for people with known or suspected heart disease who already had a scan showing reduced blood flow.