Comparison of the classification of pulmonary hypertension due to left heart disease according to transpulmonary pressure gradient or diastolic pressure difference methods.
- Author:
Hao ZHANG
1
;
Haifeng ZHANG
2
;
Email: HAIFENG_ZHANG@163.COM.
;
Wei SUN
1
;
Yanhui SHENG
1
;
Rong YANG
1
;
Dongjie XU
1
;
Fang ZHOU
1
;
Ying XU
1
;
Yanli ZHOU
1
;
Xiangqing KONG
1
;
Xinli LI
1
Author Information
- Publication Type:Journal Article
- MeSH: Blood Pressure; Cardiac Catheterization; Diastole; Heart; Heart Failure; Hemodynamics; Humans; Hypertension, Pulmonary; Vascular Resistance
- From: Chinese Journal of Cardiology 2015;43(9):769-773
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVETo compare the features of patients with pulmonary hypertension due to left heart disease classified according to transpulmonary gradient (TGP) or diastolic pressure difference (DPD).
METHODSThirty-three patients with pulmonary hypertension due to left heart disease diagnosed by right heart catheterization were enrolled. Patients were divided into two groups according to TPG: 17 patients with TPG ≤ 12 mmHg (1 mmHg = 0.133 kPa) and 16 patients with TPG > 12 mmHg; or divided into two groups according to DPD: 23 patients with DPD < 7 mmHg and 10 patients with DPD ≥ 7 mmHg. McNemar's method was used to test the agreement of the two classification methods.
RESULTSBelow are the patients features according to the classification by TPG: central venous pressure ((9.0 ± 2.5) vs. (12.7 ± 5.4) mmHg), mean right atria pressure ((9.1 ± 2.4) vs. (12.8 ± 5.2) mmHg), right heart systolic pressure ((45.5 ± 9.8) vs. (66.8 ± 15.4) mmHg), right heart mean pressure ((22.6 ± 5.2) vs. (33.1 ± 7.5) mmHg), pulmonary systolic pressure ((44.2 ± 10.3) vs. (64.8 ± 14.2) mmHg), pulmonary diastolic pressure ((24.2 ± 4.5) vs. (33.1 ± 8.3) mmHg), pulmonary mean pressure ((32.3 ± 5.7) vs. (45.8 ± 8.6) mmHg), cardiac index ((2.6 ± 1.0) vs. (1.9 ± 0.9) L · min(-1) · m(-2)), right heart EF ((31.2 ± 12.6)% vs. (22.6 ± 7.1) %) and pulmonary vascular resistance ((2.3 ± 0.8) vs. (6.3 ± 2.6) Wood) were significantly different between the two groups (all P < 0.05). According to the classification of DPD, only right heart diastolic pressure ((7.4 ± 3.7) vs. (11.5 ± 5.7) mmHg), pulmonary diastolic pressure ((25.9 ± 6.4) vs. (34.7 ± 8.0) mmHg) and pulmonary vascular resistance ((3.3 ± 2.0) vs. (6.2 ± 3.4) Wood) were significantly different between the two groups (all P < 0.05). These was a weak agreement (κ = 0.386 6, 95% CI: 0.092 2-0.681 0) between the two classification methods.
CONCLUSIONTPG classification is superior to DPD classification for pulmonary hypertension patients due to left heart disease on identifying the hemodynamic differences.