Aims: An increased pulse pressure(PP) has consistently predicted increased cardiovascular morbidity and mortality in cardiovascular risk patients and mild chronic heart failure(CHF). In contrast, a decreased PP was re...Aims: An increased pulse pressure(PP) has consistently predicted increased cardiovascular morbidity and mortality in cardiovascular risk patients and mild chronic heart failure(CHF). In contrast, a decreased PP was related to increased mortality in patients with acute decompensated heart failure. However, the predictive value of PP in patients with advanced CHF is not known. Methods and results: PP was analysed for its effect on mortality, adjusting for other modifiers of risk, using Cox proportional hazards regression analysis of data collected from 1901 patients with New York Heart Association Class III or IV CHF(mean age 65 and mean ejection fraction 0.26). Natriuretic peptides were measured in a subgroup. Multivariable Cox-regression analysis demonstrated that lower PP was associated with an increased mortality[hazard ratio(HR) 0.91 per 10 mmHg; 0.93-0.99], independent of mean arterial pressure(MAP) and other well known prognostic markers. In patients with a PP below the median value of 45 mmHg, PP was a stronger predictor of mortality than MAP(HR for PP 0.80 per 10 mmHg; 0.64-0.99). In patients with a PP above the median value of 45 mmHg, MAP was a stronger predictor of mortality than PP(HR for MAP 0.83 per 10 mmHg increase; 0.72-0.95). In addition, lower PP was independently related to increased atrial natriuretic peptide(ANP) and B-type natriuretic peptide(BNP). Conclusion: In patients with advanced CHF, low PP is an independent predictor of mortality. In addition, low PP was related to increased levels of ANP and BNP.展开更多
目的探究多巴酚丁胺联合硝酸甘油在实施控制性低中心静脉压(CLCVP)技术中的应用效果及其对患者血流动力学的影响。方法50例肝部分切除(切除≥2个肝叶)患者,随机分为N组(24例)和D组(26例)。在手术开始至切肝及止血完成阶段,N组使用硝酸...目的探究多巴酚丁胺联合硝酸甘油在实施控制性低中心静脉压(CLCVP)技术中的应用效果及其对患者血流动力学的影响。方法50例肝部分切除(切除≥2个肝叶)患者,随机分为N组(24例)和D组(26例)。在手术开始至切肝及止血完成阶段,N组使用硝酸甘油维持中心静脉压(CVP)<5 cm H_(2)O(1 cm H_(2)O=0.098 kPa),D组使用多巴酚丁胺联合硝酸甘油维持CVP<5 cm H_(2)O。比较两组手术情况[手术时间、肝切除后(T4)和术毕(T5)输液量、尿量、术中出血量],CVP、心脏指数(CI),术野等级,血红蛋白(Hb)、红细胞比容(HCT)水平,肝、肾功能指标[谷丙转氨酶(ALT)、谷草转氨酶(AST)、肌酐(Cr)、尿素氮(BUN)]。结果D组手术时间(222.8±81.6)min较N组的(277.1±61.3)min短,T5输液量(2946.1±398.6)ml及术中出血量(223.0±115.5)ml较N组的(3233.5±444.3)、(404.8±219.6)ml少(P<0.05);两组T4输液量及尿量比较无差异(P>0.05)。与N组比较,D组在手术开始后15 min(T2)时的CVP明显低于N组(P<0.05);诱导后(T1)、肝切除开始(T3)、T4时D组CVP与N组比较无统计学意义(P>0.05);两组CVP在T2、T3、T4时均较T1低(P<0.05),在T5时恢复至接近T1水平(P>0.05)。D组在T3时的CI明显高于N组(P<0.05);D组在T1、T2、T4、T5时的CI与N组比较无统计学差异(P>0.05);N组在T1~T4时CI组内比较无统计学意义(P>0.05),在T5时CI较T1时高(P<0.05);D组在T2、T3、T5时CI较T1时高(P<0.05),T4时CI与T1比较无统计学差异(P>0.05)。D组术中术野等级优于N组,有统计学差异(P<0.05)。D组在T4、T5的Hb、HCT均较N组高(P<0.05);两组T1时的Hb、HCT无统计学差异(P>0.05);两组患者Hb、HCT在T4和T5时均较T1降低(P<0.05)。两组术前及术后第1、3、7天ALT、AST、BUN、Cr比较,差异均无统计学意义(P>0.05);两组术后第1、3、7天BUN和Cr与术前比较,无统计学差异(P>0.05);两组ALT、AST在术后第1、3天均较术前增高(P<0.05),术后第7天与术前比较无统计学差异(P>0.05)。结论在实施CLCVP技术中应用多巴酚丁胺联合硝酸甘油可更有效降低CVP,维持循环稳定,并减少术中出血量。展开更多
文摘Aims: An increased pulse pressure(PP) has consistently predicted increased cardiovascular morbidity and mortality in cardiovascular risk patients and mild chronic heart failure(CHF). In contrast, a decreased PP was related to increased mortality in patients with acute decompensated heart failure. However, the predictive value of PP in patients with advanced CHF is not known. Methods and results: PP was analysed for its effect on mortality, adjusting for other modifiers of risk, using Cox proportional hazards regression analysis of data collected from 1901 patients with New York Heart Association Class III or IV CHF(mean age 65 and mean ejection fraction 0.26). Natriuretic peptides were measured in a subgroup. Multivariable Cox-regression analysis demonstrated that lower PP was associated with an increased mortality[hazard ratio(HR) 0.91 per 10 mmHg; 0.93-0.99], independent of mean arterial pressure(MAP) and other well known prognostic markers. In patients with a PP below the median value of 45 mmHg, PP was a stronger predictor of mortality than MAP(HR for PP 0.80 per 10 mmHg; 0.64-0.99). In patients with a PP above the median value of 45 mmHg, MAP was a stronger predictor of mortality than PP(HR for MAP 0.83 per 10 mmHg increase; 0.72-0.95). In addition, lower PP was independently related to increased atrial natriuretic peptide(ANP) and B-type natriuretic peptide(BNP). Conclusion: In patients with advanced CHF, low PP is an independent predictor of mortality. In addition, low PP was related to increased levels of ANP and BNP.
文摘目的探究多巴酚丁胺联合硝酸甘油在实施控制性低中心静脉压(CLCVP)技术中的应用效果及其对患者血流动力学的影响。方法50例肝部分切除(切除≥2个肝叶)患者,随机分为N组(24例)和D组(26例)。在手术开始至切肝及止血完成阶段,N组使用硝酸甘油维持中心静脉压(CVP)<5 cm H_(2)O(1 cm H_(2)O=0.098 kPa),D组使用多巴酚丁胺联合硝酸甘油维持CVP<5 cm H_(2)O。比较两组手术情况[手术时间、肝切除后(T4)和术毕(T5)输液量、尿量、术中出血量],CVP、心脏指数(CI),术野等级,血红蛋白(Hb)、红细胞比容(HCT)水平,肝、肾功能指标[谷丙转氨酶(ALT)、谷草转氨酶(AST)、肌酐(Cr)、尿素氮(BUN)]。结果D组手术时间(222.8±81.6)min较N组的(277.1±61.3)min短,T5输液量(2946.1±398.6)ml及术中出血量(223.0±115.5)ml较N组的(3233.5±444.3)、(404.8±219.6)ml少(P<0.05);两组T4输液量及尿量比较无差异(P>0.05)。与N组比较,D组在手术开始后15 min(T2)时的CVP明显低于N组(P<0.05);诱导后(T1)、肝切除开始(T3)、T4时D组CVP与N组比较无统计学意义(P>0.05);两组CVP在T2、T3、T4时均较T1低(P<0.05),在T5时恢复至接近T1水平(P>0.05)。D组在T3时的CI明显高于N组(P<0.05);D组在T1、T2、T4、T5时的CI与N组比较无统计学差异(P>0.05);N组在T1~T4时CI组内比较无统计学意义(P>0.05),在T5时CI较T1时高(P<0.05);D组在T2、T3、T5时CI较T1时高(P<0.05),T4时CI与T1比较无统计学差异(P>0.05)。D组术中术野等级优于N组,有统计学差异(P<0.05)。D组在T4、T5的Hb、HCT均较N组高(P<0.05);两组T1时的Hb、HCT无统计学差异(P>0.05);两组患者Hb、HCT在T4和T5时均较T1降低(P<0.05)。两组术前及术后第1、3、7天ALT、AST、BUN、Cr比较,差异均无统计学意义(P>0.05);两组术后第1、3、7天BUN和Cr与术前比较,无统计学差异(P>0.05);两组ALT、AST在术后第1、3天均较术前增高(P<0.05),术后第7天与术前比较无统计学差异(P>0.05)。结论在实施CLCVP技术中应用多巴酚丁胺联合硝酸甘油可更有效降低CVP,维持循环稳定,并减少术中出血量。