Jessica Juan Pramudita - Faculty of Public Health, Diponegoro University, Semarang, Indonesia
Bagoes Widjanarko - Faculty of Public Health, Diponegoro University, Semarang, Indonesia
Munadi Munadi - Department of Mechanical Engineering, Diponegoro University, Semarang, Indonesia
Ari Suwondo - Postgraduate Program, Poltekkes Kemenkes Semarang, Semarang, Indonesia

Blood transfusion service is a health service effort that includes planning, mobilizing, and maintaining blood donors, supplying blood, distributing blood, and medical acts of giving blood to patients to cure diseases and restore health. Blood for transfusion is transported to the hospital using a cooler box without any equipment. This condition is very likely to reduce blood quality during the transportation process due to vibration during transportation. Indications of damage can be seen in changes in the color of blood plasma. The type of research used in this study was a quasi-experimental design with a pretest-posttest with the control group. This study was divided into ۳ groups: Group ۱, initial observation without treatment, and final observation in groups ۲ and ۳. Inclusion criteria were: The age range of ۱۷ to ۲۵ years old, the minimum body weight of ۴۵ kilograms, the minimum HB of ۱۲.۵ gr/dl, systolic blood pressure of ۱۱۰–۱۶۰ mmHg and diastolic ۷۰–۹۰ mmHg, not currently taking medication within three days, and women not menstruating, pregnant, or breastfeeding. Examination of hemoglobin and erythrocytes was done using a hematology analyzer and LDH examination using spectrophotometry. The results showed that the number of erythrocytes after treatment (posttest) was different according to the treatment group (p = ۰.۰۴۲). Treatment in the ۵ Hz vibration group reduced the lowest erythrocyte levels, namely to ۴,۲۲۰,۰۰۰ /mm۳, compared to the control group and ۱۰ Hz vibration. Hemoglobin levels after treatment (posttest) differed according to the treatment group (p = ۰.۰۱۵); treatment at ۱۰ Hz vibration reduced the lowest hemoglobin level, namely ۱۰.۷۷ g/dL, compared to the control group and the ۵ Hz vibration group. LDH levels after treatment (posttest) differed according to the treatment group (p = ۰.۰۰۰).

Blood quality, vibration, Transportation, cooler box