In China, it is a consensus view that the survival rate of patients suffering cardiac arrest is low because of the low prevalence of first aid knowledge. First-Aid Guidance is a product that is designed for emergencies, providing cardio-pulmonary resuscitation (CPR) and other first aid tutorials that everyone can use quickly. Users can perform a professional CPR or other first aid in emergencies without learning any first aid knowledge.
We implemented ideas through mini program. Chinese users can open mini programs directly via WeChat without downloading anything.
In order to fully understand this field, we participated in a first aid skills training session and examination, achieved a Red Cross Junior First Aid Certificate, and conducted a interview with Mr. Hai Feng, the captain of a first aid team. From the case he personally touched on, he told us the difficulty and problems of implementing first aid.
Suggestions from interviewee:
We found two apps relating to first aid that could meet basic requirements: the Red Cross First Aid app and the On-Site First Aid Guide. However, in a situation where first aid is required, we believe that the academic style of these, the complicated UI, and the need to download the apps in advance are disadvantages, and reasons for users to give up.
What could we do?
To solve the issues I listed, the solutions are separated into 4 parts:
In China, ambulances usually take more than 15 minutes to arrive at the scene. But a nearby first-aid helper can aim to get there within ten minutes.
Press, talk and let go for quick help. First Aid Guidance has a first aid helper network. Help-seeker only need to press the calling button and hold to explain the situation in the field; it is not necessary to describe where you are. After letting go, the voice recording will be sent along with the location information to the first-aid helper within 1km.
In the emergencies, having too many features doesn't provide better user experience. Therefore, the points listed below are limitation design for emergency:
Convert incomprehensible numbers into visual images that are perceptible to the eye
Instead of use the texts like “Press at least 100 to 120 times per minute”, “two fingers below the xiphoid”, we use GIFs with the exact pressing rate and easy-followed illustrations so that users could easily grasp instructions such as “Pressing rates are 100 times per minute” just by a glance.
Saving while Learning
Divide a long tutorial into several step-by-step tutorials
CPR should begin as soon as possible. Compared to the traditional method of beginning the life-saving process after learning the whole tutorial, it will be more efficient to operate CPR while learning. So, we transformed the traditional long text/video tutorials to be several step-by-step tutorials, and presented the tutorials by Gif and text instructions, which are easy to understand and check back to. Through this method, users can perform CPR while watching.
And the size of the text that can be seen clearly on the ground
We used large text and voice assistance. Therefore, users do not have to pick up their mobile phone again during CPR, so the process is not interrupted.
Accurately measures the depth of pressure.
The chest compressions in CPR for adults should be between 5cm (2.0in) and 6cm (2.4in) deep. The precise mode makes ordinary people are abled to perform professional CPRs. Users needs to hold the mobile phone in their hand to press, and the mobile phone uses its built-in sensors (gyroscope and accelerometer) to detect whether the depth of each pressing is correct, thereby judging whether it is effective.
Looking for an AED machine with ease.
Automated External Defibrillator (AED) are common devices for CPR and are distributed in cities. The AED navigation can help helpers to find these.