RV-PA分离与ST段升高肌肉心脏病发作的一年死亡率有关
Christian Graesser1, Jola Bresha2, Ferdinand Roski3
1Department of Cardiology, German Heart Centre Munich, TUM University Hospital, School of Medicine and Health, Technical University of Munich, Munich, Germany; German Centre for Cardiovascular Research, Partner Site Munich Heart Alliance, Munich, Germany; Department of Internal Medicine III-Cardiology and Angiology, Saarland University Medical Center, Homburg/Saar, Germany.
JACC. Cardiovascular interventions
|January 29, 2026
概括
通过TAPSE/sPAP比率测量的右心室肺动脉 (RV-PA) 脱,显著预测ST段升高心肌梗塞 (STEMI) 患者的1年死亡率. 这一发现有助于早期风险分层,以改善患者的治疗结果.
科学领域:
- 心脏病学 心脏病学
- 关键护理医学 关键护理医学
- 心声回声扫描 (Echocardiography) 是一种心声回声扫描.
背景情况:
- 右心室 (RV) - 肺动脉 (PA) 合评估RV功能相对于肺后负载.
- 它是重症患者的预后标志物,可以通过心声回声学测量.
研究的目的:
- 为了确定RV-PA合在ST段升高心肌梗塞 (STEMI) 患者的预后意义.
- 评估RV-PA脱作为一次性穿皮冠状动脉干预后死亡率的预测因素.
主要方法:
- 对973名接受初级穿皮冠状动脉干预的STEMI患者的回顾性分析.
- 通过三状环状平面缩外流 (TAPSE) 与缩肺动脉压力 (sPAP) 的比率来评估RV-PA脱.
- 在TAPSE/sPAP比率0.405 mm/mm Hg的截止值中,确定了高风险和低风险组.
主要成果:
- RV-PA脱与显著更高的一年全因死亡率 (33.30%对3.04%).
- 与TAPSE单独相比,TAPSE/sPAP比率在1年死亡率方面的预测性表现优于TAPSE.
- 在多变量分析中,RV-PA脱独立预测了1年死亡率.
结论:
- 在STEMI患者中,RV和肺循环之间的血液动力学平衡至关重要.
- 由TAPSE/sPAP比率<0.405 mm/mm Hg定义的RV-PA脱,是1年死亡率的独立预测因素.
- 这一指标有助于在STEMI患者中早期分层风险.
相关概念视频
03:12Freezing Point Depression and Boiling Point Elevation
40.0K
Boiling Point Elevation
The boiling point of a liquid is the temperature at which its vapor pressure is equal to ambient atmospheric pressure. Since the vapor pressure of a solution is lowered due to the presence of nonvolatile solutes, it stands to reason that the solution’s boiling point will subsequently be increased. Vapor pressure increases with temperature, and so a solution will require a higher temperature than will pure solvent to achieve any given vapor pressure, including one...
The boiling point of a liquid is the temperature at which its vapor pressure is equal to ambient atmospheric pressure. Since the vapor pressure of a solution is lowered due to the presence of nonvolatile solutes, it stands to reason that the solution’s boiling point will subsequently be increased. Vapor pressure increases with temperature, and so a solution will require a higher temperature than will pure solvent to achieve any given vapor pressure, including one...
40.0K
01:20Elevation of Intermediate Points on Vertical Curves
289
Vertical curves are essential in roadway design because they provide smooth transitions between varying roadway grades. Designing vertical curves involves calculating intermediate elevations and identifying the curve's highest or lowest point, which is essential for optimal roadway performance.Intermediate elevations on a vertical curve are determined using the tangent offset method. This method considers the initial elevation at the start of the curve, the grades, and the curve's geometry. The...
289
02:15SN1 Reaction: Stereochemistry
10.3K
This lesson provides an in-depth discussion of the stereochemical outcomes in an SN1 reaction.
In the first step of an SN1 reaction, the bond between the electrophilic carbon and the leaving group ionizes to generate the carbocation intermediate. The second step of the mechanism is the nucleophilic attack.
In the formed carbocation, the positively charged carbon is sp2 hybridized with a trigonal planar geometry. As all the three substituents lie on the same plane, a plane of symmetry for the...
In the first step of an SN1 reaction, the bond between the electrophilic carbon and the leaving group ionizes to generate the carbocation intermediate. The second step of the mechanism is the nucleophilic attack.
In the formed carbocation, the positively charged carbon is sp2 hybridized with a trigonal planar geometry. As all the three substituents lie on the same plane, a plane of symmetry for the...
10.3K
02:05SN1 Reaction: Kinetics
9.6K
In an SN2 reaction, the reaction rate depends on both the type of nucleophile and the substrate. A hindered tertiary alkyl halide is practically inert to the SN2 mechanism despite using a strong nucleophile.
However, Sir Christopher Ingold and Edward D. Hughes, who studied the kinetics of various nucleophilic substitution reactions, noticed that a tertiary alkyl halide does undergo a nucleophilic substitution reaction in the presence of a weak nucleophile. While studying the substitution...
However, Sir Christopher Ingold and Edward D. Hughes, who studied the kinetics of various nucleophilic substitution reactions, noticed that a tertiary alkyl halide does undergo a nucleophilic substitution reaction in the presence of a weak nucleophile. While studying the substitution...
9.6K
02:25SN1 Reaction: Mechanism
14.3K
Kinetic studies of ionization of a tertiary halide in a protic solvent suggest that only the substrate participates in the rate-determining step (slow step). The nucleophile is involved only after the slowest step. The SN1 reaction takes place in a multiple-step mechanism.
Firstly, the haloalkane ionizes to generate a carbocation intermediate and a halide ion. This heterolytic cleavage is highly endothermic with large activation energy. The ionization of the substrate, facilitated by a...
Firstly, the haloalkane ionizes to generate a carbocation intermediate and a halide ion. This heterolytic cleavage is highly endothermic with large activation energy. The ionization of the substrate, facilitated by a...
14.3K
02:42Acidity of 1-Alkynes
11.2K
The acidic strength of hydrocarbons follows the order: Alkynes > Alkenes > Alkanes. The strength of an acid is commonly expressed in units of pKa — the lower the pKa, the stronger the acid. Among the hydrocarbons, terminal alkynes have lower pKa values and are, therefore, more acidic. For example, the pKa values for ethane, ethene, and acetylene are 51, 44, and 25, respectively, as shown here.
11.2K