Research Article

The Identical External Reference Point Standardized to the Zero-Reference Level for Measuring Both Central and Jugular Venous Pressures: An Observational Study

Table 1

Characteristics of 150 subjects.

CharacteristicsValue

Age and mean ± SD (years)50.67 ± 18.96
Male/female ratio79/71
Nonsmoker/smoker ratio95/55
Body mass index and mean ± SD (kg/m2)23.64 ± 3.41
ICU diagnosis, no.
 Medical ICU
  (1) Sepsis20
  (2) Pneumonia16
  (3) Congestive cardiac failure15
  (4) Poisoning12
  (5) Decompensated chronic liver disease5
  (6) Pancreatitis4
  (7) Acute respiratory distress syndrome3
  (8) Miscellaneous18
 Surgical ICU
  (1) Postoperative case46
  (2) Pancreatitis1
  (3) Acute respiratory distress syndrome1
  (4) Miscellaneous9
Right subclavian catheterization, no.109
Right internal jugular catheterization, no.41
CVP-MTP, mean ± SD (cm H2O)9.17 ± 2.79
CVP-MAL, mean ± SD (cm H2O)9.03 ± 2.65
JVP-MTP, mean ± SD (cm H2O)8.07 ± 2.25
JVP-SA + 5, mean ± SD (cm H2O)7.13 ± 1.87

CVP-MAL: central venous pressure (CVP) measured from the midaxillary line (MAL) at the fourth intercostal space; CVP-MTP: CVP measured from the midthoracic plane (MTP) at the anterior fourth intercostal space level; JVP-MTP: jugular venous pressure (JVP) measured from the MTP; JVP-SA  +  5: JVP measured from the sternal angle (SA) with the addition of 5 cm.