S2

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S2

Symbol for second heart sound.

S2

the second heart sound in the cardiac cycle. It is associated with closure of the aortic and pulmonic valves at the outset of ventricular diastole. The second sound is louder and shorter than the first. The sound of the aortic valve is loudest on the right sternal border, and that of the pulmonic valve is most distinct on the left sternal border over the second intercostal space.

S2

Cardiology The 2nd heart sound, which corresponds to the closure of semilunar–pulmonary and aortic valves, which is a short, higher pitched “dubb”.

S2

Abbreviation for second heart sound.
References in periodicals archive ?
367(a)-3(a) on the transfer of the S-1 stock to S-2, P will enter into a gain recognition agreement pursuant to Regs.
Armed with tools such as Palantir[R], Microsoft SharePoint[R], and a shared network computer drive, the S-2 section must store this information in a way that is easy to locate, access, and understand.
2008 SURFLANT Blue Jacket of the Year CS3(SW) Craig Ratliff S-2 Division Storeroom Custodian USS Mahan (DDG 72)
For example, even when the 3d Sustainment Brigade was not the supported unit, the brigade S-2 section continuously monitored the unmanned aerial vehicle (UAV) video downlink in the brigade TOC and communicated with analysts in relevant chat rooms to ensure that convoys were aware of threats that the UAV had identified on their routes.
Samples were then analyzed by gas chromatographic/mass spectrometric (GC/MS) analysis for S-2 and other pesticides.
The military relies upon S-2 Glass armor systems to protect personnel all around the globe.
0%) and was higher than prevalence on S-2 during the same period.
The attachment point on the class S-2 notes has increased to 13.
The series S-1, S-2, S-3, and S-4 bonds are expected to sell on a negotiated basis during the week of June 21.
The mortgage loans in Group S-2 consists of 576 newly originated fixed-rate mortgage loans, with an aggregate principal balance of $271,465,641, as of the cut-off date.