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Comprehensive Assessment of Emergency Medical Services 19 DRAFT REPORT and 911/Communications Center Operations Study Calls Dispatched per Hour Among the significant County concerns presented to the consultant as an impetus for this study was the apparent increasing frequency during which EMS units were often out of service; albeit on an active call; or out of the County transporting a victim to a medical facility when emergency calls from within the County continued to be received and dispatched. Subsequently, a look at the "calls received per hour", plotted for an entire year, will identify both the peak and approximate time frame of the busiest call periods during any given day and of course the times when EMS personnel are most likely to be needed. In order to ascertain whether these periods of activity were unique or consistent in their occurrence,the most recent three (3) years of data was reviewed and plotted. The results, illustrated in Figure 9 for 2009, 2010, and 2011 were very consistent Based on the illustration, the busiest hour of the day during 2011 was between noon and 1:00 pm wherein 754 calls were received. The least busy hour of the day, based on this illustration appears to be between 3:00 am and 4:00 am and is generally consistent for the years studied. Subsequently,the daily"prime-time" hours;the busiest 12 hour period of the day(give or take); appears to be between 9:00 am and 9:00 pm or, between the numbers 9 and 21 on the horizontal axis. This of course then will be the time period when EMS ambulance units will be in greatest demand. Figure 9 EMS Calls per Hour/Year 800 r 11--rT-r---rT-I--I-rT1-I-rr-r1-I-7541 I-rT� I I rT1 -I rr�-I rr r� I I I I I I I I I 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 I I I I I I I I I 1 1 1 1 1 1 1 1 1 1 I II I I I I I I 1 1 1 1 1 1 1 1 1 700 +I 1 1 I I I---I +I-I- r1 I +I-1-I-1.on1 * 1 1 - ► + I--IrrI +-1--11-11-- 1 -- L 1 1 J 1 I I I I I I 1 1 1 L 1 l 1 4"L L S J i j J I I I I i I 1 1 1 1 1 60 0 1.J . I 1 1 1 1 I I I 1 1 1 I I I I I 1 1 11 I I I 1 I I 11 I 1 I I I I I I I I I i 1 1 1 1 1 I I 1 I 1 11 1 1 1 1 500 T11 rT ___rTI r T1 -rr11'-rr 11--rT1---r 1_ T1_I 1__ 1 7 1 I I I 1 1 I 1 1 I I I I I I I I 1 1 1 I I I I 11 I I I I 400 + 11 1 1 1 I I I I I I 300 I ' ' I I) I 200 ri rr��sTi rT 1- rrll rrll -rT1 rr1 rT1 rr11 r Iil iil 11111 II 1 1 I II II II 1 ,1 1 1 1 1 1 1 L- 1 1 1 1 1 1 i 100 I + -I- � -I_�+-, --�+-I ,_� + ,--1 +-I--1 , + -- +-I--- +a-I-1_�+a-1- 111111111111 II 11 11 11 11 11 11 1 111111111111 II 11 11 II II 11 11 I 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 2009 —4,—2010 '°0-2011 Note:the number'1'on the horizontal axis represents 1:00 am;the number 12 represents noon,the number 18,6:00 pm,etc. Emergency vs. Non-Emergency Response When the average citizen calls 911-it IS an emergency. Medical dispatch protocols have been developed, however, that dictate, based on the condition identified, how the response is to be coded; i.e.Alpha-least serious, non-emergent through Echo-most serious, emergent. In turn,the response code identified and broadcast to responding units will dictate the Status of their response; i.e. lights and sirens,or no lights and sirens. Solutions for Local Government,Inc. 17