Wednesday, July 18, 2012

Incidence of cardiac rhythms as determined by Paramedics on an ALS ambulance

The following are the incidence of various cardiac rhythms as determined by the treating Paramedic for an ALS ambulance from October 2007 to June 2012. Outlier data were examined for correctness, including all interpretations of rhythms with less than 2% incidence. Incomplete data for each record was added if available, otherwise the record was ignored. AV Nodal Blocks and Bundle Branch Blocks were not recorded in this data set.

  • Patients: 3528 (47% male)
  • Age: 8 hours - 110 years (avg 56 yr, median 60 yr)

  • First Contact Heart Rate (>0): 22-260 bpm (avg 91 bpm, median 90 bpm, stdev 29.5)


  • First Contact Rhythm:
Count Rhythm
184152.18%Normal Sinus Rhythm
99528.20%Sinus Tachycardia
1454.11%Paced Rhythm
1393.94%Sinus Bradycardia
1143.23%Atrial Fibrillation
882.49%Asystole
681.93%Sinus Arrhythmia
671.90%Atrial Fibrillation w/ RVR
190.54%Pulseless Electrical Activity
180.51%Supraventricular Tachycardia
110.31%Ventricular Fibrillation
100.28%Atrial Flutter
50.14%Ventricular Tachycardia
40.11%Junctional Rhythm
20.06%Idioventricular Rhythm
10.03%Ectopic Atrial Tachycardia
10.03%Junctional Tachycardia

5 comments:

Jarvik 7 said...

Incidence of paced rhythm > SB and AF! That is surprising to me and very interesting; what is particularly thought provoking is how this incidence data would compare to that of other geographical regions with different demographics (eg. economic, access to insurance, access to care, proximity to university med. cen., ethnic, educational, etc.).

Also, how does the incidence based on paramedic/ prehospital dx reflect the incidence in the general population as determined by MD dx (excluding morbid rhythms), or how does pre-hospital dx reflect ED dx? Where are the disparities, and why?

Thanks for making me think about this stuff!

Christopher said...

Our population is older (2 nursing homes introduce bias) and less insured (low median income).

If you include AF w/ RVR then atrial fibrillation has a higher incidence than paced rhythms.

I did find it interesting that sinus brady was lower in incidence, but perhaps that is due to sampling bias: patients that paramedics decide to place on the cardiac monitor.

My favorite was the median heart rate! Ambulatory holter monitoring usually shows a rate in the mid 70's or mid 60's depending on the age group.

I just wanted to see how prevalent dysrhythmias were for a single ambulance, and I enjoyed it!

Amanda Bella said...

I Want To Appreciate Dr.OYAGU for his great deeds, I Was Diagnosed With type 2 Herpes Virus Last year,And i Was Looking For Solution To Be Cured Luckily I Saw Testimonies On How Dr.OYAGU Cure Herpes Virus I Decided To Contact Dr.OYAGU I Contacted Him He Prepared A Herbal Medicine Portion And Sent It To Me,I Started The Herbal Medicine For My Health.He Gave Me Step By Step Instructions On How To Apply It, When I Applied It As Instructed, I Was Cured Of This Deadly Herpes Within 2 weeks, I Am Now Herpes Negative.My Brother And Sister I No That There Are So Many People That Have The Same Herpes Virus Please contact Dr OYAGU To Help You Too,And Help Me To Thank Dr.OYAGU For Cure Me, I’m Cured By Dr. OYAGU Herbal Medicine,His Contact Email:oyaguherbalhome@gmail.com

Or Cell Whatsapp Number +2348101755322 thank you

T Mitchell said...

I’ve been Feeling weak and always feeling sleepy for some time which I went for a test and I was told i am diagnosed with Amyotrophic lateral sclerosis Disease (ALS DISEASE) ever since then I've followed a wide variety of medical treatments, I have even combined with different pills and antibiotics without clear results. My health was deteriorating more and more. But thanks to a Herbal Doctor's herbs method that I found on the internet which has saved so many lives and also helped me to achieve the results i wanted, i knew from the beginning that this could help me after much learning and the cure Dr sent to me and which I began to follow the method from the Herbal Doctor called (Dr Aziba) and the results were wonderful: I recommend you to get in contact with him via Email: priestazibasolutioncenter@gmail.com and on WhatsApp: +2348100368288 for ALS, HPV, HSV, HERPES, Virginal Infection Cure etc.. DR is also available to help!






I’ve been Feeling weak and always feeling sleepy for some time which I went for a test and I was told i am diagnosed with Amyotrophic lateral sclerosis Disease (ALS DISEASE) ever since then I've followed a wide variety of medical treatments, I have even combined with different pills and antibiotics without clear results. My health was deteriorating more and more. But thanks to a Herbal Doctor's herbs method that I found on the internet which has saved so many lives and also helped me to achieve the results i wanted, i knew from the beginning that this could help me after much learning and the cure Dr sent to me and which I began to follow the method from the Herbal Doctor called (Dr Aziba) and the results were wonderful: I recommend you to get in contact with him via Email: priestazibasolutioncenter@gmail.com and on WhatsApp: +2348100368288 for ALS, HPV, HSV, HERPES, Virginal Infection Cure etc.. DR is also available to help!





I’ve been Feeling weak and always feeling sleepy for some time which I went for a test and I was told i am diagnosed with Amyotrophic lateral sclerosis Disease (ALS DISEASE) ever since then I've followed a wide variety of medical treatments, I have even combined with different pills and antibiotics without clear results. My health was deteriorating more and more. But thanks to a Herbal Doctor's herbs method that I found on the internet which has saved so many lives and also helped me to achieve the results i wanted, i knew from the beginning that this could help me after much learning and the cure Dr sent to me and which I began to follow the method from the Herbal Doctor called (Dr Aziba) and the results were wonderful: I recommend you to get in contact with him via Email: priestazibasolutioncenter@gmail.com and on WhatsApp: +2348100368288 for ALS, HPV, HSV, HERPES, Virginal Infection Cure etc.. DR is also available to help!

Florence said...


I started on COPD Herbal treatment from Ultimate Health Home, the treatment worked incredibly for my lungs condition. I used the herbal treatment for almost 4 months, it reversed my COPD. My severe shortness of breath, dry cough, chest tightness gradually disappeared. Reach Ultimate Health Home via their website www.ultimatelifeclinic.com I can breath much better and It feels comfortable!