Syringe dead space: difference between revisions
Diff·revision 21 → 22·02:00, 19 Mar 2026
Difference between revision 21 and revision 22 of Syringe dead space. 2 lines changed; the page grew by 519 bytes.
| Revision 21 — 03:49, 4 Mar 2026 ForestPlotFinn (talk) ce 20,340 bytes +55 | Revision 22 — 02:00, 19 Mar 2026 Hedgerow_Hal (talk) correct the needle gauge given for subcutaneous administration 20,859 bytes +519 | ||
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| 146 | The second is the use of dead space as a device-quality claim. A device may be marketed on a low retained volume without stating how the figure was obtained, and because no standard requires the declaration, no comparability can be assumed. Marketing figures and gravimetrically measured figures for the same product have differed.{{r|zule2013}} | 146 | The second is the use of dead space as a device-quality claim. A device may be marketed on a low retained volume without stating how the figure was obtained, and because no standard requires the declaration, no comparability can be assumed. Marketing figures and gravimetrically measured figures for the same product have differed.{{r|zule2013}} |
| 147 | 147 | ||
| + | 148 | The third is the omission of dead space from dose arithmetic altogether. Reconstitution guidance and calculators commonly convert a target mass to a volume using the concentration, and stop there. That conversion is correct for the delivered dose but silent on how many doses a vial will actually yield, which is the figure a reader is often trying to obtain. The article [[Reconstitution calculator]] treats the arithmetic; the omission is noted here because it is systematic rather than occasional.{{r|ppdeadspace}} | |
| + | 149 | ||
| 148 | == References == | 150 | == References == |
| 149 | {{reflist}} | 151 | {{reflist}} |