Key result
A pear-shaped balloon inflated to a volume equal to the left ventricular end-diastolic volume induced the highest systolic aortic pressure and flow during left intraventricular balloon pumping.
Why the study?
Does a pear-shaped balloon with volume equal to LVEDV improve systolic aortic pressure and flow during left intraventricular balloon pumping in fibrillating dog hearts?
Does a pear-shaped balloon with volume equal to LVEDV improve systolic aortic pressure and flow during left intraventricular balloon pumping in fibrillating dog hearts?
Answers are grounded in this paper and cite their sources.
In a canine model of fibrillating cardiac arrest, a pear-shaped left intraventricular balloon with a volume equal to the left ventricular end-diastolic volume optimized hemodynamic support.
This work aims to determine optimal balloon shape and volume during left intraventricular balloon pumping (IABP) in the fibrillating dog heart. A balloon volume equal to the left ventricular end-diastolic volume (LVEDV) maintained a higher systolic aortic pressure and flow (106.4 +/- 2.7 mmHg and 84.7 +/- 2.35 ml/kg/min, x +/- SEM, respectively) than a 25% smaller (97.8 +/- 3.3 mmHg, P = 0.002 and 63.7 +/- 4.1 ml/kg/min, P = 0.002, respectively) or a 25% larger balloon (87.4 +/- 2.3 mmHg, P = 0.002 and 70.9 +/- 3.4 ml/kg/min, P = 0.002, respectively). Among 5 different balloon shapes tested, a pear-shaped balloon inflated from the apex to the base of the left ventricle induced the highest (P varying from 0.042 to 0.01, compared to the remaining balloon shapes) systolic aortic pressure and flow (104.6 +/- 4.5 mmHg and 77.9 +/- 1.7 mg/kg/min, respectively). In conclusion, a pear shaped balloon, inflated to a volume equal to the LVEDV, from the apex to the base of the left ventricle, induced an optimal hemodynamic effect during LVBP.
No takes yet. Share an insight, caveat, or question.
Stamatelopoulos et al. (1996) studied Intractable Cardiac Arrest. Left intraventricular balloon pumping with volume equal to LVEDV and pear shape vs. 25% smaller or 25% larger balloon, and other shapes was evaluated on Systolic aortic pressure and flow (p=0.002). A pear-shaped balloon inflated to a volume equal to the left ventricular end-diastolic volume induced the highest systolic aortic pressure and flow during left intraventricular balloon pumping.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: