Comparisons on functional capacities of simple breathing balloon extruded by different hand types and methods / 中国中西医结合急救杂志

ABSTRACT

Objective To observe the differences in functional capacities generated by different simple breathing balloons extruded by different hand types and methods.Methods The lung functional measurement instrument was used to measure the generated functional capacities of two types of simple breathing balloon extruded by different hand methods: using big-, mid- and small-size hands with 5 fingers generally separately open and maximally extended states or with both small-size hands to extrude balloon; the effective generated gas quantity of the above methods were compared.Results ① Comparison between different balloons the functional capacity generated by black rubber balloon extruded by any hand type was 68 - 132 mL lower than that generated by light blue silicon balloon. ② The comparison between different hand types the functional capacities generated by any hand at maximally extended state in extruding balloon was 13 - 70 mL higher than that by hand commonly separate state; extrusion by a small size hand was nearly unable to reach 400 mL, while the functional capacity was 520 - 650 mL when the balloon was extruded by a big size hand, and 435 - 635 mL by a mid-size hand; it was necessary to use both small hands when the black rubber balloon was extruded, when the light blue silicon air bag was extruded, the functional capacity could reach 430 - 440 mL with a small size hand. ③ Difference in extruding methods: the functional capacity generated by either big size hand or mid-size hand with 5 fingers maximally extending state to extrude balloon was significantly higher than that with 5 fingers commonly separate state, the functional capacity generated by both small size hands with fingers maximally separating and extending state to extrude balloon was obviously higher than that generated by 5 fingers generally separating and extending state, the functional capacities generated by light blue silicon balloon were obviously higher than those by black rubber balloon, no matter the 5 fingers of big- or mid-size hand being at generally separating or extending state (mL 623.00±21.11 vs. 522.00±41.85 by big size hand with common 5 fingers separate state, 649.00±26.01 vs. 575.00±58.55 by big sizehand with maximum 5 fingers extending state; 566.00±37.77 vs. 436.00±21.19 by mid-size hand with common 5 fingers separate state, 637.00±30.02 vs. 505.00±37.49 by mid-size hand with maximum 5 fingers extending state); the light blue silicon balloon extruded by small hand with 5 fingers at generally separate state and at maximally extending state could generate functional capacities (mL)432.00±13.02 and 444.00±37.18 respectively, significantly higher than those using the 2 types of hand state extruding a black rubber balloon (the tidal volume < 400 mL), the functional capacities generated by both small hands extruding a light blue silicon balloon was obviously higher than that by using a black rubber balloon (mL 557.00±54.98 vs. 489.00±40.12, allP < 0.05).Conclusions Different functional capacities will be generated by different hand sizes, different hand extruding methods and types of simple breathing balloon, clinical application should be based on patients' body weights to decide their tidal volumes, and combined with the rescuers' hand sizes and types of simple breathing balloon to choose a proper extruding method for a certain patient, thus sufficient oxygen can be surely provided in time for him/her and rescue successful rate can be elevated.