Key result
Post-hemorrhagic shock mesenteric lymph drainage improved left ventricular systolic pressure and ±dP/dt max compared to shock alone in a rat model.
Why the study?
Does post-hemorrhagic shock mesenteric lymph drainage improve cardiac function in a rat model of hemorrhagic shock?
Does post-hemorrhagic shock mesenteric lymph drainage improve cardiac function in a rat model of hemorrhagic shock?
This preclinical study suggests that post-hemorrhagic shock mesenteric lymph contributes to cardiac dysfunction following hemorrhagic shock, and its drainage may preserve cardiac function.
Improves LV function in rat hemorrhagic shock model; leaves open clinical translation to human resuscitation.
PURPOSE: To evaluate whether post-hemorrhagic shock mesenteric lymph (PSML) is involved in cardiac dysfunction induced by hemorrhagic shock. METHODS: The hemorrhagic shock model (40±2 mmHg, 3h) was established in rats of the shock and shock+drainage groups; and PSML drainage was performed from hypotension 1-3h in the shock+drainage rats. Then, the isolated hearts were obtained from the rats for the examination of cardiac function with Langendorff system. Subsequently, the isolated hearts were obtained from normal rats and perfused with PSML or Krebs-Henseleit solution, and the changes of cardiac function were observed. RESULTS: The left ventricular systolic pressure (LVSP) and the maximal rates of LV developed pressure (LVDP) rise and fall (±dP/dt max) in the shock and shock+drainage groups were lower than that of the sham group; otherwise, these indices in the shock+drainage group were higher compared to the shock group. In addition, after isolated hearts obtained from normal rats perfusing with PSML, these cardiac function indices were gradual decline along with the extension of time, such as heart rate, LVSP, ±dP/dt max, etc. CONCLUSION: Post-hemorrhagic shock mesenteric lymph is an important contributor to cardiac dysfunction following hemorrhagic shock.
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Du et al. (2015) studied Hemorrhagic shock. Post-hemorrhagic shock mesenteric lymph drainage vs. Shock without drainage and sham was evaluated on Cardiac function indices (LVSP, ±dP/dt max). Post-hemorrhagic shock mesenteric lymph drainage improved left ventricular systolic pressure and ±dP/dt max compared to shock alone in a rat model.
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