2nd Intercostal Space

The 2nd rib is continuous with the sternal angle.

2nd intercostal space. Slide your finger down to localize the 2nd intercostal space. Third left ics left sternal border. Figure 4 5 shows the location of the second intercostal space.

The sound that emits from the aortic and pulmonic points is the s2 dub of the typical lub dub heartbeat. The eleven paired intercostal spaces contain the intercostal muscles nerves arteries veins and investing fascia. Use the diaphragm of your stethoscope second heart sounds are best heard when patients are semi recumbent 30 40 degrees upright and in quiet inspiration.

Since there are 12 ribs on each side there are 11 intercostal spaces each numbered for the rib superior to it. The intercostal spaces are the spaces amongst the two bordering ribs and their costal cartilages. The intensity of p2 is determined relative the a2.

Terms used include. Fourth left ics left sternal border. In treating a tension pneumothorax we have traditionally been taught to place a large bore catheter in the second intercostal place 2nd ics mid clavicular line and this method is still advocated in atls guidelines.

At the second left intercostal space s 2 is generally louder shorter and sharper than s 1 s 2 has more high frequency energy than s 1 which is why dup a snappier sound than lub is used to characterize s 2. Several kinds of intercostal muscle. Structures in intercostal space.

Heart murmur duration refers to the portion of systole or diastole that the murmur occupies. Reference lines help pinpoint findings vertically. The pulmonic point is to the left of the sternal border in the second intercostal space.