Catheterization
Conditions
Keywords
Internal jugular vein, Inferior vena cava, Right heart catheterization
Brief summary
The study aims to standardize patient positioning during bedside ultrasound assessment of internal jugular vein (IJV) and correlate the results with invasive hemodynamics obtained immediately after. The study hypothesizes that the respiratory variation in the size of IJV, as estimated through ultrasound at bedside, is an accurate estimation of the patient's actual right atrial pressure estimated through right heart catheterization.
Interventions
DEVICEUltrasound imaging
Patients scheduled to undergo right heart catheterization (RHC) as their standard of care will be included in the study. The patient will be positioned supine at 0 degrees with normal restful breathing and patient looking straight up. After the right sternocleidomastoid muscle is identified, internal jugular vein (IJV) will be imaged at the apex of the triangle formed by the sternal and clavicular heads of the muscle. Similarly, the inferior vena cava (IVC) will be imaged at the caudal end of the sternum. The diameters of both the veins will be noted during normal respiration. The patients will then be asked to sniff and collapsibility of the veins will be noted. No pressure will be applied on the neck. The anticipated duration for image acquisition is between 5 to 10 minutes. The patients will undergo the scheduled RHC within 1 hour as scheduled.
Sponsors
Gaurang Vaidya
Study design
Observational model
COHORT
Time perspective
PROSPECTIVE
Eligibility
Sex/Gender
ALL
Age
18 Years to 99 Years
Healthy volunteers
Yes
Inclusion criteria
* Undergoing right heart catheterization
Exclusion criteria
* Superior vena cava obstruction or compression * Severe tricuspid regurgitation * Mechanically ventilated patients
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Cross-sectional diameters of the internal jugular vein (IJV) | 5 minutes | The respiratory variation percentage will assessed using M-mode of the ultrasound while the patient is breathing normally. The maximum and minimum anteroposterior diameter will be noted using M-mode (in mm). |
| Sniff collapsibility of IJV | 10 minutes | Complete collapse (0cm) of the anteroposterior diameter of IJV on sniff maneuver by the patient, as assessed by M-mode on the ultrasound. |
| Cross-sectional diameters of the inferior vena cava (IVC) | 5 minutes | Maximum diameter - noted using M-mode (in mm) of the ultrasound machine. |
Countries
United States
Outcome results
None listed