Andrea Morelli, M.D., of the University of Rome, Italy, and colleagues conducted a study to investigate the effect of the short-acting beta-blocker esmolol on the heart rate of patients with severe septic shock and high risk of death.
Septic shock is associated with adverse effects on cardiac function. Beta-blocker therapy controls heart rate and may improve cardiovascular performance, but concerns remain that this therapy may lead to cardiovascular decompensation (inability of the heart to maintain adequate circulation), according to background information in the article.
The randomized phase 2 study was conducted in a university hospital intensive care unit (ICU) between November 2010 and July 2012. It recruited patients in septic shock with a heart rate of 95/min or higher requiring high-dose norepinephrine to maintain an average arterial pressure of 65 mm Hg or higher. The researchers randomly assigned 77 patients to receive a continuous infusion of esmolol to maintain heart rate between 80 beats per minute (BPM) and 94 BPM for the duration of their ICU stay and 77 patients to standard treatment. The primary outcome was a reduction in heart rate below the predefined threshold of 95 BPM and maintain a heart rate between 80 and 94 BPM over a 96-hour period.
The researchers found that the target range for heart rate was achieved in all patients in the esmolol group, which was significantly lower throughout the intervention period than what was achieved in the control group. In addition, the esmolol group had a 28-day mortality rate of 49.4 percent vs. 80.5 percent in the control group. Overall survival was higher in the esmolol group.
There was no clinically relevant differences between groups in other investigated cardiopulmonary variables nor in rescue therapy requirements.
"Further investigation of the effects of esmolol on clinical outcomes is warranted," the authors write.
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Andrea Morelli, M.D., of the University of Rome, Italy, and colleagues conducted a study to investigate the effect of the short-acting beta-blocker esmolol on the heart rate of patients with severe septic shock and high risk of death.
Septic shock is associated with adverse effects on cardiac function. Beta-blocker therapy controls heart rate and may improve cardiovascular performance, but concerns remain that this therapy may lead to cardiovascular decompensation (inability of the heart to maintain adequate circulation), according to background information in the article.
The randomized phase 2 study was conducted in a university hospital intensive care unit (ICU) between November 2010 and July 2012. It recruited patients in septic shock with a heart rate of 95/min or higher requiring high-dose norepinephrine to maintain an average arterial pressure of 65 mm Hg or higher. The researchers randomly assigned 77 patients to receive a continuous infusion of esmolol to maintain heart rate between 80 beats per minute (BPM) and 94 BPM for the duration of their ICU stay and 77 patients to standard treatment. The primary outcome was a reduction in heart rate below the predefined threshold of 95 BPM and maintain a heart rate between 80 and 94 BPM over a 96-hour period.
The researchers found that the target range for heart rate was achieved in all patients in the esmolol group, which was significantly lower throughout the intervention period than what was achieved in the control group. In addition, the esmolol group had a 28-day mortality rate of 49.4 percent vs. 80.5 percent in the control group. Overall survival was higher in the esmolol group.
There was no clinically relevant differences between groups in other investigated cardiopulmonary variables nor in rescue therapy requirements.
"Further investigation of the effects of esmolol on clinical outcomes is warranted," the authors write.
Explore further: Use of hypothermia does not improve outcomes for adults with severe meningitis, may be harmful
More information: doi:10.l001/jama.2013.278477
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Bruno Mourvillier, M.D., of the Université Paris Diderot, Sorbonne Paris Cité, Paris, and colleagues conducted a study to examine whether treatment with hypothermia would improve the functional outcome of comatose patients ...
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Sep 20, 2013
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Heart-rate-lowering drug ivabradine reduces death when added to treatments in heart failure patients
Aug 29, 2010
The heart-rate-lowering drug ivabradine significantly reduces the risk of cardiovascular death and hospitalisation for worsening heart failure when added to standard treatment in patients with heart failure and a high heart ...
Heart rate-lowering drug improves exercise capacity in patients with stable angina
Oct 30, 2008
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Feb 17, 2012
Fever control using external cooling in sedated patients with septic shock is safe and decreases vasopressor requirements and early mortality, according to a new study from researchers in France.
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14 hours ago
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23 hours ago
Six-hundred thousand to eight-hundred thousand Austrians suffer from diabetes mellitus. Thanks to the biomarker known as NT-proBNP (a hormone specific to the heart), the sub-group of people who are at increased risk of cardiovascular ...
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