All Valves Closed. This phase of the cardiac cycle begins with the appearance of the QRS complex of the ECG, which represents ventricular depolarization. This triggers excitation-contraction coupling, myocyte contraction and a rapid increase in intraventricular pressure. Early in this phase, the rate of pressure development becomes maximal.
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1 Cleanse your face immediately after treatment with a wet cloth and rehydrating toner to remove any micro-crystal residue or dead skin cells left behind. 2  Once the skin has dried completely, apply a rich moisturizer. usually avoid any exfoliation or shaving after facial or body microderm abrasions: 1  I avoid exfoliation products and glycolic acid-based creams for 3 days after micro dermabration. 2  I avoid waxing for at least 30 days after microderm.