what is the specific abnormally in this lead I-III rhythm st | Figure 1

Ljaneira

what is the specific abnormally in this lead I-III rhythm strip?

Similar cases

normotensive and asymptomatic. Machine read as "sinus rhythm with complete heart block and junctional bradycardia". Hilarious](https://app.figure1.com/case-detail/2de42290-eaa6-4570-b498-eb008a8581b1)

pretty interesting 12 lead we found today. Healthy 20 year old complaining of lightheadedness. This is not WPW... But has had rates in the 170s. (Drinks large amounts of Mt dew).](https://app.figure1.com/case-detail/3490b2e6-4dad-4954-b4f7-79cf7a20ce66)

Finally in a better quality](https://app.figure1.com/case-detail/3fa46a44-77ce-45d0-943c-f80e635f00eb)

Can you name this rhythm in a 40 y.o M with epigastric pain.](https://app.figure1.com/case-detail/450481e1-5965-4524-a742-3723a3a101f7)

A 52-year-old man presented with a 20-minute history of chest pain radiating to the left shoulder and neck, associated with dyspnea and diaphoresis. He had a history of hypertension, long-term smoking, and a sedentary lifestyle. On physical examination, bibasilar crackles were noted on lung auscultation. An electrocardiogram (ECG) was performed in the primary care setting, and the patient was promptly referred to the emergency department.](https://app.figure1.com/case-detail/ae0fe999-6875-4474-94f0-ad823dbb9b3a)

A 28-year-old woman presented with a 3-day history of intense pruritus over the lower back. She reported no recent travel or exposure to new environments. She cares for a small kennel with approximately eight dogs rescued from the streets. Physical examination revealed multiple small vesicles, some clustered and others scattered, predominantly involving the lumbar region and the left gluteal area.](https://app.figure1.com/case-detail/c271070f-2bc7-4052-9895-635277e1a7d5)

A 4-month-old male infant presented with skin lesions localized to the chin for the past 3 days. Physical examination revealed multiple small pustules with surrounding inflammatory signs on the chin, along with a few scattered papules on the chest.](https://app.figure1.com/case-detail/48f41642-b9db-4089-b120-a94ee52328de)

patient in late teens presenting after a collapse, no chest pain, no previous cardiac history, no history of sudden death in family, are there any features in this ekg that would warrant further work-up or is this just a pediatric ekg?](https://app.figure1.com/case-detail/2af390e1-ace8-40ed-ba1c-98fb2d72f4c5)