Figure 1. Assessment of antero-posterior diameter of the right internal jugular vein by ultrasonography. The diameter was measured 2 cm above the level of the clavicle.
| Journal of Clinical Medicine Research, ISSN 1918-3003 print, 1918-3011 online, Open Access |
| Article copyright, the authors; Journal compilation copyright, J Clin Med Res and Elmer Press Inc |
| Journal website http://www.jocmr.org |
Original Article
Volume 12, Number 3, March 2020, pages 150-156
Collapsibility of the Right Internal Jugular Vein Predicts Responsiveness to Fluid Administration in Patients Receiving Pressure Support Ventilation: A Prospective Cohort Study
Figures
Tables
| Responders (n = 18) | Non-responders (n = 16) | P value | |
|---|---|---|---|
| The results are expressed as the median (25-75%). PBW: predicted body weight; PEEP: positive end expiratory pressure; BSA: body surface area; SV: stroke volume; SVV: stroke volume variation; CSA: cross-sectional area; RIJV: right internal jugular vein; LIJV: left internal jugular vein; RSCV: right subclavian vein; LSCV: left subclavian vein; IVC: inferior vena cava. | |||
| Patients characteristics | |||
| Age (years) | 70 (66 - 77) | 76 (71 - 84) | 0.047 |
| Gender (male/female) | 12/6 | 9/7 | 0.552 |
| Height (cm) | 165 (154 - 168) | 156 (152 - 169) | 0.332 |
| Weight (kg) | 60 (56 - 69) | 54 (48 - 61) | 0.097 |
| Diagnosis of acute circulatory failure | |||
| Septic shock | 12 | 11 | 0.915 |
| Hemorrhagic shock | 3 | 0 | 0.099 |
| Acute mesenteric ischemia | 1 | 1 | 0.966 |
| Post-resuscitation syndrome | 1 | 1 | 0.966 |
| Others | 1 | 3 | 0.253 |
| Vasopressor use | |||
| Norepinephrine | 10 | 8 | 0.765 |
| Norepinephrine and/or other vasoactive agents | 7 | 5 | 0.662 |
| None | 1 | 3 | 0.253 |
| Respiratory parameters | |||
| Tidal volume/PBW (mL) | 9.5 (8.0 - 10.9) | 9.5 (7.9 - 11.8) | 0.863 |
| Respiratory rate | 17 (13 - 25) | 18 (12 - 22) | 0.616 |
| Pressure support (cm H2O) | 7 (8.5 - 11.5) | 8 (5 - 10) | 0.084 |
| PEEP (cm H2O) | 7 (5 - 8) | 5 (5 - 8.5) | 0.658 |
| Minute ventilation (L/min) | 8.6 (7.0 - 13.2) | 7.7 (6.9 - 9.6) | 0.36 |
| Hemodynamic parameters | |||
| Systolic arterial pressure (mm Hg) | 98 (84 - 108) | 120 (107 - 125) | 0.01 |
| Mean arterial pressure (mm Hg) | 63 (58 - 74) | 73 (62 - 79) | 0.164 |
| Diastolic arterial pressure (mm Hg) | 47 (44 - 54) | 51 (44 - 53) | 0.876 |
| Pulse pressure (mm Hg) | 44 (40 - 59) | 67 (60 - 76) | 0.002 |
| Heart rate (bpm) | 97 (90 - 110) | 88 (76 - 96) | 0.03 |
| Cardiac output (L/min) | 4.1 (3.8 - 6.0) | 4.0 (3.6 - 5.8) | 0.653 |
| Cardiac index (L/min/BSA) | 2.7 (2.5 - 3.5) | 2.7 (2.5 - 3.3) | 0.903 |
| SV (mL) | 45 (39 - 55) | 51 (43 - 58) | 0.369 |
| SVV (%) | 16 (12 - 21) | 7 (5 - 12) | 0.003 |
| Collapsibility (%) | |||
| RIJV diameter | 16.1 (12.2 - 23.9) | 5.7 (1.4 - 9.0) | < 0.001 |
| RIJV CSA | 26.6 (20.7 - 38.2) | 9.1 (4.3 - 15.3) | 0.002 |
| LIJV diameter | 13.4 (5.2 - 26.7) | 8.9 (4.4 - 25.2) | 0.523 |
| LIJV CSA | 17.7 (8.2 - 28.3) | 16.5 (4.4 - 29.6) | 0.569 |
| RSCV diameter | 7.3 (3.0 - 14.8) | 4.4 (2.9 - 8.2) | 0.3 |
| RSCV CSA | 15.2 (8.6 - 31.0) | 11.5 (8.8 - 15.3) | 0.301 |
| LSCV diameter | 13.0 (6.9 - 19.3) | 10.2 (3.6 - 17.2) | 0.617 |
| LSCV CSA | 18.6 (10.0 - 28.1) | 13.9 (5.8 - 26.4) | 0.309 |
| IVC diameter | 28.9 (16.3 - 39.5) | 25.1 (9.62 - 37.1) | 0.484 |
| CI: confidence interval; CSA: cross-sectional area; RIJV: right internal jugular vein; LIJV: left internal jugular vein; RSCV: right subclavian vein; LSCV: left subclavian vein; IVC: inferior vena cava; SVV: stroke volume variation. | |
| Collapsibility | |
| RIJV diameter | 0.88 (0.75 - 0.99) |
| RIJV CSA | 0.82 (0.67 - 0.97) |
| LIJV diameter | 0.57 (0.37 - 0.77) |
| LIJV CSA | 0.56 (0.35 - 0.77) |
| RSCV diameter | 0.61 (0.41 - 0.80) |
| RSCV CSA | 0.61 (0.41 - 0.80) |
| LSCV diameter | 0.55 (0.35 - 0.76) |
| LSCV CSA | 0.60 (0.40 - 0.81) |
| IVC diameter | 0.57 (0.37 - 0.77) |
| Hemodynamic parameter | |
| SVV | 0.80 (0.64 - 0.96) |