Chi Zhang, MD

Cardiac electrophysiologist @NorthsideHosp. Arrhythmias, medical education, and workflow optimization.

[Chi Zhang, MD @chizhangmd]

Here are some EGMs from the initial ICD interrogation and the activation map created by our very own @VickSinghh

[Chi Zhang, MD @chizhangmd]

Middle-aged male with cardiac arrest s/p ICD has refractory VF and ICD shocks

Short-coupled moderator band PVC induced VF

Used @Medtronic’s AFFERA system to target ventricular insertion of moderator band + consolidation with RFA/PFA

Non-inducible post-ablation

[Chi Zhang, MD @chizhangmd]

Tough CRT-D upgrade: dilated RA and tortuous upper venous anatomy = poor torque translation

ICE and Inquiry to guide and place-hold the CS; os much lower than expected

MDT 6250 sheath to get near the CS, then telescope into os with AL1; shimmy wire into tiny mid-lateral branch

[Chi Zhang, MD @chizhangmd]

Referral for pocket infection of a 2017 MDT DC PPM

Laser lead extraction, 12 Fr VisiSheath @Philips

AVEIR DR implanted for SSS/CHB @AbbottNews

Thanks to Dr. Gambhir for his guidance/expertise and @NorthsideHosp for the opportunity to provide the best care to our patients!

[Chi Zhang, MD @chizhangmd]

Young pt with refractory IST

🚫 RFA due to phrenic nerve proximity

✅ PFA of IST with the @Medtronic PulseSelect system

Immediate ⬇️ in heart rate with inversion of P wave axis, chronotropy intact on Isuprel, no diaphragm injury

No need for epi access or phrenic deviation!

[Northside Hospital @NorthsideHosp]

September is National Atrial Fibrillation Awareness Month. Learn more about risks and treatments from the Northside Hospital Heart Institute. https://t.co/5qjJbFxamT

[Chi Zhang, MD @chizhangmd]

Wrapping up an exciting first month @NorthsideHosp!

Fortunate to have the opportunity to work with an amazingly supportive cardiology team to treat arrhythmias both fast and slow!

[Chi Zhang, MD @chizhangmd]

Bidding farewell to NYC after 5 years!

Thankful for the life experiences, education, and support throughout this medical odyssey

Excited for the next chapter @NorthsideHosp!

[Chi Zhang, MD @chizhangmd]

Last two VT cases to wrap up EP fellowship!

1. Endo/Epi RFA of lateral substrate in a pt with recurrent MMVT despite anti-arrhythmics

2-4. Bipolar PFA of basal RV/LV in a pt with prior failed VT ablations and intramyocardial substrate; VT termination with PFA!

[Chi Zhang, MD @chizhangmd]

Third time’s the charm with @billwhangep and @Akash_BWI

Young pt with two prior ablations at outside facility but with recurrent SVT

Orthodromic AVRT with pathway mapped to the proximal CS/MCV

AP eliminated in <1 sec with ⚡️

[Chi Zhang, MD @chizhangmd]

Pathway mapmaking with cartographer @Akash_BWI and Dr. Dukkipati

Young pt with SVT requiring hospitalization

Intermittent VPE with eccentric CS pattern during RV pacing

Activation map in SVT of left posterolateral AP with Octaray

⚡️and pathway goes 💨

[Chi Zhang, MD @chizhangmd]

Punishing some PVCs before the long weekend with @Akash_BWI and @billwhangep

Outflow tract PVCs with early precordial transition

Decanav into the CS -> early signals

Aortic cusps late compared to CS

PVC bracketed within the distal CS

Termination in 3 seconds with ⚡️

[Chi Zhang, MD @chizhangmd]

Another whirlwind tour through 🫘town at #HRS2024

Fortunate for the opportunity to meet friends, colleagues, and mentors while celebrating the latest advances in EP

[Chi Zhang, MD @chizhangmd]

“Halo” from the other side!

Halo catheter shows the change in atrial activation pattern before and after CTI ablation for typical flutter

[Chi Zhang, MD @chizhangmd]

Middle-aged male with symptomatic, monomorphic PVCs (25% burden)

DecaNav upfront into the distal CS with early signals

Other sites all later (LV, LVOT, RVOT)

EPStar into the AIV to fully bracket the PVC

Mapped to the GCV/AIV junction

⚡️in the CS; immediate PVC elimination

[Chi Zhang, MD @chizhangmd]

To boldly go where no catheter has gone before! 🚀

PFA in a persistent left SVC to target non-PV triggers for AF

[Chi Zhang, MD @chizhangmd]

Young patient with daily palpitations

Accessory pathway mapped to the right midseptum in sinus rhythm

Loss of VPE within 3.5 seconds of ⚡️

[Chi Zhang, MD @chizhangmd]

Epicardial exploration 🗺️ with @billwhangep

Patient with NICM and recurrent ICD therapies from MMVT despite amiodarone

Unremarkable LV endocardial voltage map

Basal anterolateral epicardial substrate with juicy buffet of late, fractionated potentials waiting to be ⚡️

[Chi Zhang, MD @chizhangmd]

Farapulsing flutter with Dr. Marc Miller!

Middle-aged male with persistent atrial flutter despite DCCVs

Mapped a roof dependent flutter with a circuit around the RPSV

Long, fractionated EGMs on the LA roof

Immediate termination of flutter with PFA @BSCCardiology

[Chi Zhang, MD @chizhangmd]

Another round of cardioneuroablation to end the week!

Middle aged male with vagotonic heart block and profound bradycardia who refused a pacemaker

Presented in 2:1 AV block but following ⚡️of the RIGP, conduction recovered 1:1