MCP๋กœ ์—ฐ๊ฒฐ โ†’

๊ณ„์‚ฐ ์ž…๋ ฅ

๊ณต์‹

๊ด‘๊ณ 

๊ฒฐ๊ณผ

์ ์  ์†๋„
42
๋ถ„๋‹น ์ ์ ์ˆ˜ (gtt/min)
์ •ํ™•ํ•œ ๊ฐ’ 41.67 gtt/min

๋ถ„๋‹น ์ ์ ์ˆ˜ ๊ณ„์‚ฐ๊ธฐ๋ž€?

์ด ๊ณ„์‚ฐ๊ธฐ๋Š” ์ค‘๋ ฅ์— ์˜ํ•œ ์ˆ˜์•ก ์ฃผ์ž…(gravity infusion) ์‹œ IV ์ ์  ์†๋„๋ฅผ ๋ถ„๋‹น ์ ์ ์ˆ˜(gtt/min)๋กœ ๊ณ„์‚ฐํ•ฉ๋‹ˆ๋‹ค. ๊ฐ„ํ˜ธ์‚ฌ์™€ ์˜๋ฃŒ์ง„์€ ์ฒ˜๋ฐฉ๋œ ์ˆ˜์•ก๋Ÿ‰์ด ์ •ํ™•ํ•œ ์‹œ๊ฐ„ ๋™์•ˆ ์ฃผ์ž…๋˜๋„๋ก ์ˆ˜๋™ ๋กค๋Ÿฌ ํด๋žจํ”„๋ฅผ ์กฐ์ ˆํ•  ๋•Œ ์ด ๊ฐ’์„ ํ™œ์šฉํ•ฉ๋‹ˆ๋‹ค. ๋งคํฌ๋กœ ์ ์  ์„ธํŠธ(10, 15, 20 gtt/mL)์™€ ๋งˆ์ดํฌ๋กœ ์ ์  ์„ธํŠธ(60 gtt/mL) ๋ชจ๋‘์— ์‚ฌ์šฉํ•  ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค.

์‚ฌ์šฉ ๋ฐฉ๋ฒ•

์ฃผ์ž…ํ•  ์ด ์ˆ˜์•ก๋Ÿ‰์„ ๋ฐ€๋ฆฌ๋ฆฌํ„ฐ(mL) ๋‹จ์œ„๋กœ ์ž…๋ ฅํ•˜๊ณ , ์ฃผ์ž… ์‹œ๊ฐ„์„ ๋ถ„(minute) ๋‹จ์œ„๋กœ ์ž…๋ ฅํ•œ ๋’ค, ์‚ฌ์šฉ ์ค‘์ธ IV ์ˆ˜์•ก ์„ธํŠธ ํฌ์žฅ์— ํ‘œ๊ธฐ๋œ ์ ์  ๊ณ„์ˆ˜๋ฅผ ์„ ํƒํ•˜์„ธ์š”. ๊ณ„์‚ฐ๊ธฐ๋Š” ์‹ค์ œ๋กœ ์„ธ์–ด์•ผ ํ•  ๋ฐ˜์˜ฌ๋ฆผ๋œ ์ ์  ์†๋„์™€ ํ•จ๊ป˜ ์ •ํ™•ํ•œ ๋ฏธ๋ฐ˜์˜ฌ๋ฆผ ๊ฐ’์„ ํ•จ๊ป˜ ๋ณด์—ฌ์ค๋‹ˆ๋‹ค.

๊ณต์‹ ์„ค๋ช…

์ ์  ์†๋„๋Š” ์ˆ˜์•ก๋Ÿ‰์— ์ ์  ๊ณ„์ˆ˜๋ฅผ ๊ณฑํ•œ ๋’ค ๋ถ„ ๋‹จ์œ„ ์‹œ๊ฐ„์œผ๋กœ ๋‚˜๋ˆˆ ๊ฐ’์ž…๋‹ˆ๋‹ค.

$$\text{gtt/min} = \frac{\text{์ˆ˜์•ก๋Ÿ‰ mL} \times \text{์ ์  ๊ณ„์ˆ˜ gtt/mL}}{\text{์‹œ๊ฐ„(๋ถ„)}}$$

์ ์  ๊ณ„์ˆ˜๋Š” ํ•ด๋‹น ์ˆ˜์•ก ์„ธํŠธ์—์„œ 1๋ฐ€๋ฆฌ๋ฆฌํ„ฐ๊ฐ€ ๋ช‡ ๋ฐฉ์šธ๋กœ ์ด๋ฃจ์–ด์ง€๋Š”์ง€๋ฅผ ๋‚˜ํƒ€๋ƒ…๋‹ˆ๋‹ค. ์ˆ˜์•ก๋Ÿ‰์— ์ ์  ๊ณ„์ˆ˜๋ฅผ ๊ณฑํ•˜๋ฉด ๋ฐ€๋ฆฌ๋ฆฌํ„ฐ๊ฐ€ ์ด ์ ์ ์ˆ˜๋กœ ํ™˜์‚ฐ๋˜๊ณ , ์ด๋ฅผ ์‹œ๊ฐ„์œผ๋กœ ๋‚˜๋ˆ„๋ฉด ์ฃผ์ž… ์‹œ๊ฐ„ ์ „์ฒด์— ์ ์ ์ด ๊ณ ๋ฅด๊ฒŒ ๋ถ„๋ฐฐ๋ฉ๋‹ˆ๋‹ค.

Diagram of an IV setup showing fluid bag, drip chamber with falling drops, tubing, and labeled variables for volume, drop factor, and time
The drip rate depends on the infusion volume, the drop factor of the tubing, and the total time.

๊ณ„์‚ฐ ์˜ˆ์‹œ

์ ์  ๊ณ„์ˆ˜๊ฐ€ 20 gtt/mL์ธ ์ˆ˜์•ก ์„ธํŠธ๋ฅผ ์‚ฌ์šฉํ•ด 1000 mL๋ฅผ 480๋ถ„(8์‹œ๊ฐ„)์— ๊ฑธ์ณ ์ฃผ์ž…ํ•ด์•ผ ํ•œ๋‹ค๊ณ  ๊ฐ€์ •ํ•ด ๋ด…์‹œ๋‹ค. ์ ์  ์†๋„๋Š” $$\frac{1000 \times 20}{480} = \frac{20000}{480} = 41.67$$์ด๋ฉฐ, ๋ฐ˜์˜ฌ๋ฆผํ•˜๋ฉด ๋ถ„๋‹น 42๋ฐฉ์šธ์ด ๋ฉ๋‹ˆ๋‹ค.

Comparison of a macrodrip chamber with large widely spaced drops and a microdrip chamber with small closely spaced drops
Macrodrip tubing delivers larger drops (10-20 gtt/mL) while microdrip delivers small drops (60 gtt/mL).

์ž์ฃผ ๋ฌป๋Š” ์งˆ๋ฌธ

์ ์  ๊ณ„์ˆ˜(drop factor)๋ž€ ๋ฌด์—‡์ธ๊ฐ€์š”? ํŠน์ • IV ์ˆ˜์•ก ์„ธํŠธ์—์„œ 1๋ฐ€๋ฆฌ๋ฆฌํ„ฐ๋‹น ๋–จ์–ด์ง€๋Š” ์ ์ ์˜ ์ˆ˜๋กœ, ํฌ์žฅ์— ํ‘œ๊ธฐ๋˜์–ด ์žˆ์Šต๋‹ˆ๋‹ค. ๋งคํฌ๋กœ ์ ์  ์„ธํŠธ๋Š” 10~20 gtt/mL, ๋งˆ์ดํฌ๋กœ ์ ์  ์„ธํŠธ๋Š” 60 gtt/mL์ž…๋‹ˆ๋‹ค.

๊ฒฐ๊ณผ๋ฅผ ์™œ ๋ฐ˜์˜ฌ๋ฆผํ•˜๋‚˜์š”? ์ ์ ์€ ๋ถ„์ˆ˜ ๋‹จ์œ„๋กœ ์…€ ์ˆ˜ ์—†๊ธฐ ๋•Œ๋ฌธ์—, ์นจ์ƒ์—์„œ ์‹ค์ œ๋กœ ์„ธ๊ธฐ ํŽธํ•˜๋„๋ก ๊ฐ€์žฅ ๊ฐ€๊นŒ์šด ์ •์ˆ˜๋กœ ๋ฐ˜์˜ฌ๋ฆผํ•ฉ๋‹ˆ๋‹ค.

์‹œ๊ฐ„์„ '์‹œ๊ฐ„' ๋‹จ์œ„๋กœ ์ž…๋ ฅํ•ด๋„ ๋˜๋‚˜์š”? ์•„๋‹ˆ์š”. ๋จผ์ € ์‹œ๊ฐ„์„ ๋ถ„์œผ๋กœ ํ™˜์‚ฐํ•ด์•ผ ํ•ฉ๋‹ˆ๋‹ค(60์„ ๊ณฑํ•˜์„ธ์š”). ์˜ˆ๋ฅผ ๋“ค์–ด 8์‹œ๊ฐ„์€ 480๋ถ„์ž…๋‹ˆ๋‹ค.

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