Notch

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Related to Jugular notch: jugular notch of sternum, clavicular notch, sternal angle

Notch

Slang; in bond trading, a small increase or decrease in a bond rating. For example, if a rating goes from AAA to AA+, it is said to decline by a notch.

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Dunedin, New Zealand Table 1 Mean [+ or -] SD (range) without retraction Distance from mid- jugular notch, cm Left 7.4 [+ or -] 1.0 (5.4-9.0) Right 7.1 [+ or -] 1.1 (4.5-9.8) Maximum venous diameter, mm Left 10.2 [+ or -] 2.4 (6.6-15.8) Right 10.7 [+ or -] 2.2 (6.0-16.0) Mean [+ or -] SD P value (range) with retraction Distance from mid- jugular notch, cm Left 7.1 [+ or -] 1.1 (4.9-9.8) 0.019 Right 6.8 [+ or -] 1.0 (4.7-9.3) 0.036 Maximum venous * diameter, mm Left 9.0 [+ or -] 2.4 (2.7-14.0) <0.0005 Right 9.7 [+ or -] 2.6 (4.3-16.9) <0.0005 * n=49 (subclavian vein poorly visualised in one subject).

Sonographic anatomy of the subclavian vein: does shoulder retraction improve exposure?

Similarly, the midpoint of the clavicle has traditionally been used as a reference for infraclavicular puncture, and recently the mid-point of the distance between acromion and jugular notch has been advocated as a more accurate landmark for the vertical infraclavicular approach (7).

TABLE 1 Surface anatomical landmark measurements for the interscalene region Standard Measurement Mean (mm) deviation (mm) Length of clavicle (a) 166 13 Distance between jugular notch and ISG (b) 99 12 Distance between insertion point to clavicle (c) 58 9 Distance between insertion point to SCM (d) 13 8 Length of SCM (e) 167 17 Height of cricoid cartilage (f) 62 10 ISG = interscalene groove, SCM = sternocleidomastoid.