High negative intrathoracic pressure (NIP), as occurs during obstructive sleep apnea or hiccups, results in adverse hemodynamic consequences, specifically a decrease in left ventricle (LV) performance. These untoward effects can potentially be catastrophic in the case of an already compromised LV in cardiogenic shock. The interplay of intra-aortic balloon pump counter pulsation during abrupt high NIP in cardiogenic shock is described.
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"Intra-aortic Balloon Pump May Attenuate Adverse Hemodynamic Effects of Negative Intrathoracic Pressure in Cardiogenic Shock,"
The VAD Journal: Vol. 8(1)
Available at: https://digitalcommons.library.tmc.edu/vad/vol8/iss1/7