A wall of calcium. A threatened foot. Is this a “no-option” limb—or have we made that decision before seeing the whole picture? Dr. Mariano Palena joins Dr. Lucas Ferrer and Dr. Miguel Montero-Baker for Case Cast 2: a detailed discussion of a 77-year-old patient's chronic limb-threatening ischemia and heavily calcified femoropopliteal disease. The value is in the decisions behind the images. How do you choose a crossing strategy? When does retrograde access help, and what could it put at risk? How much vessel preparation is enough? And when should an operator stop? This is candid physician-to-physician discussion, including disagreement, complications and the limits of individual expertise. Severe calcium does not automatically settle the question of treatment options. Neither does an attractive final angiogram settle the question of wound perfusion. In this episode: • Why an early crossing plan can change procedural efficiency. • How access, support and through-and-through techniques shape the next move. • Why the only remaining runoff vessel deserves particular care. • How preparation influences stent expansion and deployment. • What a hemostasis complication taught Miguel about wire position. • Why Lucas challenges the missing AP view and the wound's blood supply. • How clinical progress and hemodynamic assessment inform follow-up. The ending is the lesson: Lucas asks whether the images answer the wound-specific question; Miguel cautions against chasing angiographic perfection; Mariano explains what the patient's subsequent course adds. Keep the uncertainty in view. The discussion also asks a question that matters beyond this case: what can you safely rescue if the next step goes wrong? Mariano is direct about his limits and the need for help when a surgical bailout is required. That candor belongs beside the technical tips, not outside them. For physicians building an independent practice, the useful takeaway is not a specific device recipe. It is the habit of matching ambition to anatomy, assessing the consequences of each access choice, and making the next decision with a realistic backup plan. CHAPTERS 00:00 When calcium looks like no options 00:58 Life of Flow 01:13 Case Cast 2: the decisions behind the images 06:58 The patient and the limb at risk 14:42 Plan the crossing strategy early 16:13 The reasoning behind a subintimal approach 21:32 Connecting both access sites 23:19 Support, preparation and device choices 29:07 Retrograde access: when is a sheath needed? 33:12 The risk of accessing the only runoff vessel 37:08 Know your limits and your bailout options 37:57 Practical retrograde access tips 42:02 Why Supera—and why preparation matters 51:00 Managing the retrograde access site 54:40 A complication and the wire-position check 58:36 Does the final image answer the wound question? 59:43 Angiographic beauty versus hemodynamic improvement 1:01:40 Clinical follow-up and pedal acceleration times 1:04:22 A multidisciplinary decision about the toe RESOURCE SUPERSUB II (2024), a prospective multicenter observational study: https://pubmed.ncbi.nlm.nih.gov/38566517/ CONNECT Life of Flow: https://lifeofflowpodcast.com Lucas Ferrer: https://www.linkedin.com/in/lucasferrermd/ Miguel Montero-Baker: https://www.linkedin.com/in/miguel-montero-baker-a44354214/ Instagram: @lifeofflowpodcast | X: @vascularpodcast Partnerships: info@lifeofflowpodcast.com MUSIC “Funkorama” by Kevin MacLeod (incompetech.com), licensed under Creative Commons Attribution 4.0: https://creativecommons.org/licenses/by/4.0/ Cold-open excerpt edited, faded and mixed under dialogue. This educational case discussion includes off-label techniques and procedural risks. The speakers describe their experience; decisions depend on the patient, anatomy, expertise and resources. It is not individualized medical advice. Subscribe to Life of Flow for candid conversations about clinical judgment, independent practice and the decisions that shape patient care.

What makes a medical meeting worth leaving your practice for? Another flight. Another familiar slide deck. Your staff and overhead keep running while you are away. If information is already in your pocket, what should a conference offer that you cannot get from your phone? Rich Dubin, founder and publisher of Lower Extremity Review and the organizer behind lerEXPO, joins Dr. Lucas Ferrer and Dr. Miguel Montero-Baker to examine that question. Rich brings decades in medical publishing and education; the hosts bring the realities of treating patients, running practices, and deciding where to spend their time. This conversation moves from the economics of the exhibit hall to the kind of learning that changes a physician's thinking. The details behind a difficult case. A question you would not ask from the back of an auditorium. A colleague who has done the work but never gets the microphone. And the relationships that a screen cannot entirely replace. You can use these questions to plan your next meeting. Together, they explore: • Why access to information does not settle the question of a meeting's value. • What time away really costs a physician whose practice still has to run. • How faculty access can turn a presentation into a useful conversation. • Why Miguel would rather learn in a circle than speak from a stage. • How online education could lead into focused, hands-on learning. • What an independent-practice mastermind might offer beyond clinical lectures. • Why an audience-voted case tournament inspires the name “Vascular Hunger Games.” Rich is not arguing that relationships have become obsolete. He values the handshake, the hug, and the unexpected introduction. The challenge is to give each format a purpose: online access, real discussion, and practical sessions for people who want to go deeper. The hosts push him on what clinicians gain, not only what sponsors receive. For independent physicians, the discussion becomes especially practical. Lucas imagines learning from people who have built successful practices. Miguel names the problems that deserve attention: cash flow, revenue-cycle management, a failing phone tree, and the business systems behind patient care. Their proposed gatherings remain ideas discussed in the episode, not announced courses or events. TIMESTAMPS 00:00 The cold open 00:58 Life of Flow intro 01:13 Welcome, Rich Dubin 02:16 From publishing to medical education 06:56 What being in the room still offers 11:27 What physicians and sponsors each need 16:52 What makes a conference worth attending? 21:23 Access to faculty and the cost of hierarchy 23:06 Why Miguel stepped back from conference travel 29:39 Practical judgment that does not fit on a slide 33:03 Case tournaments and hands-on learning 34:51 What it takes to build an event 40:34 A meeting designed around limb preservation 43:33 Cases, mentorship, and independent practice 48:14 Imagining a vascular case tournament 49:12 Closing reflections MEET THE GUEST Rich Dubin and the lerEXPO team: https://lerexpo.com/about-us/ Medical education and current events: https://lerexpo.com/ The discussion references Lower Extremity Review and lerEXPO. Attendance, budget and business examples are the speakers' reported experiences, not independently audited benchmarks. Check event details with the organizer. LIFE OF FLOW Two vascular surgeons. Medicine, entrepreneurship, and the choices that shape a physician's life. Hosts: Dr. Lucas Ferrer and Dr. Miguel Montero-Baker. Episodes and listening options: https://lifeofflowpodcast.com/episodes/ Instagram: @lifeofflowpodcast | X: @vascularpodcast Educational conversation and personal perspectives; discussion of a learning format does not establish better clinical outcomes. Music: “Funkorama” — Kevin MacLeod (incompetech.com). CC BY 4.0: https://creativecommons.org/licenses/by/4.0/ . Excerpted and carefully mixed under dialogue. What was the last meeting that changed how you work—and what made it useful?

Before you buy into an ASC, ask what you actually own—and who controls the decisions. Dan Lieberman, MD joins Dr. Lucas Ferrer and Dr. Miguel Montero-Baker to unpack ambulatory surgery center ownership, the partners you choose and the agreements that shape your independence. Dan trained in neurosurgery at UCSF, spent nearly two decades in solo practice and chaired the governing board of a physician-owned hospital. After essential tremor ended his operating career, his experience building ASCs became a new way to help physicians shape where and how they work. Miguel brings the question many independent physicians hesitate to ask: after building a practice you control, why put your future in other people's hands? Dan's answer moves from the cost of taking a vacation to the financial model, exit arrangements and decisions physicians need to understand before signing. In this conversation, Dan reveals: ⬛ Why owning a hospital made him rethink the environment in which he wanted to practice ⬛ How OBLs, ASCs and hospitals can serve different needs—and why patient selection comes first ⬛ Why owning your practice does not necessarily mean owning your time ⬛ What to ask about leaving a partnership before you agree to enter it ⬛ How to challenge a pro forma instead of treating its assumptions as promises ⬛ Why your ownership percentage does not tell the whole story about control ⬛ How the wrong partner can undermine an otherwise attractive business The conversation ends with a practical checklist: understand the entity you would own, question the model, assess management, read the operating agreement and know your partners. The hosts also explore what they want to ask next about choosing an ASC developer or operator. Which question would you insist on answering before buying into an ASC? Tell us in the comments. TIMESTAMPS 00:00 Ownership, partners and control 00:57 Life of Flow intro 01:12 Welcome Dan Lieberman 02:10 From neurosurgery to ASC development 05:59 The microhospital question 21:00 OBLs, ASCs and choosing the setting 24:49 Medical necessity comes first 33:58 The trust question 37:02 Independence and the cost of time away 40:53 Ask how the partnership ends 45:56 Challenging the financial model 52:20 Governance and physician control 53:38 Pitfalls and choosing partners 55:58 Choosing an operator: the next conversation 1:00:16 Closing thoughts and farewell FOLLOW DAN LIEBERMAN LinkedIn: https://www.linkedin.com/in/dan-lieberman-md/ BestPracticeHealth / Phoenix Spine & Joint: https://bestpracticehealth.tv/about-us/ RESOURCES DISCUSSED • Ambulatory surgery centers (ASCs), office-based labs (OBLs) and physician-owned hospitals • Medicare reimbursement, ASC safe-harbor considerations and physician participation • Project financial models, operating agreements, exit provisions and supermajority voting • Essential tremor and the transition away from an operating career LIFE OF FLOW Hosted by Dr. Lucas Ferrer & Dr. Miguel Montero-Baker. Website: https://lifeofflowpodcast.com YouTube: https://www.youtube.com/@LifeofFlowPodcast Spotify: https://open.spotify.com/show/5GMv47SJ0ePxbjtIb1GZ5U Apple: https://podcasts.apple.com/us/podcast/life-of-flow/id1705596604 Partner with the show: info@lifeofflowpodcast.com Connect with the hosts: Lucas: https://www.linkedin.com/in/lucasferrermd/ Miguel: https://www.linkedin.com/in/miguel-montero-baker-a44354214/ Follow the show: Instagram: https://www.instagram.com/lifeofflowpodcast/ X: https://x.com/vascularpodcast LinkedIn: https://www.linkedin.com/company/lifeofflow Cold-open music: “Funkorama” by Kevin MacLeod (incompetech.com), licensed under CC BY 4.0: https://creativecommons.org/licenses/by/4.0/ Source: https://incompetech.com/music/royalty-free/index.html?isrc=USUAN1100474 Excerpt edited, faded and mixed beneath dialogue. Educational discussion, not individualized medical, legal or financial advice. The speakers describe their experiences and views; consult appropriate professionals about your own circumstances. #LifeOfFlow #PhysicianEntrepreneurship #AmbulatorySurgeryCenter

A child should not need another open operation because an implanted blood vessel cannot grow—and a vascular graft should not become a surface where clot and infection win. Dr. Arush Kalra is a physician, biomedical engineer, co-founder and chief scientific officer of PECA Labs. He left pediatric-urology training after an attending told him, “Don’t play the game; make the game.” At Carnegie Mellon, he turned toward biomedical engineering and a strict rule: better technology should preserve a surgeon’s familiar craft instead of forcing the surgeon to relearn it. The origin was personal. Kalra’s mother has Marfan syndrome and a bicuspid aortic valve. Her progressive aortic disease pushed him toward cardiovascular materials. PECA began with expandable ePTFE conduits intended to accommodate growth in children, then asked an adult-vascular question: can a familiar graft be redesigned to resist thrombosis, reduce hyperplasia, retain antibiotics and still feel intuitive? Kalra describes the graft as a sandwich: the surfaces govern how the body responds, while the center supplies strength, flexibility and compliance. His team changes the microstructure of a material surgeons already know and inspects every graft with scanning electron microscopy. He discusses encouraging preclinical comparisons, but these remain investigational results—not clinical promises. In this conversation, Dr. Arush Kalra reveals: ⬛ Why he walked away from the identity his family and training had built for him ⬛ How his mother’s cardiovascular disease redirected his career toward devices that can grow ⬛ Why the best invention may preserve a surgeon’s technique while changing the material underneath it ⬛ How microstructure, elasticity and compliance influence thrombosis and anastomotic hyperplasia ⬛ Why PECA is exploring antibiotic retention rather than a drug layer that disappears quickly ⬛ Why patient safety demands imagining the worst outcome, not merely the most likely one Timestamps: 05:24 Growing up above a neonatal hospital 06:46 His mother’s Marfan syndrome and aortic disease 07:43 “Don’t play the game—make the game” 11:54 Searching for a cardiovascular solution 12:22 The design rule: do not make surgeons relearn their craft 14:07 A graft designed to grow with a child 16:28 The origin of PECA Labs 17:28 The obsession with clot formation 19:41 Engineering the layers of ePTFE 23:21 Why Arush praises the FDA process 28:19 Scanning every graft with electron microscopy 45:22 Why mistakes are the fastest education 46:58 Starting with peripheral vascular disease 48:23 Patient safety before commercial focus 52:37 Anti-thrombogenic and antibiotic development paths 53:24 Designing for repeated large-needle puncture 55:21 The antibiotic strategy discussed with regulators 56:59 The inventor as artist, scientist and surgeon Follow Dr. Arush Kalra: LinkedIn: https://www.linkedin.com/in/arush-kalra-b4aa4750/ PECA Labs: https://www.pecalabs.com/ Resources mentioned in this episode: 🏢 PECA Labs — expandable, radiopaque, anti-thrombogenic and valved polymer platforms 🧪 ePTFE, scanning electron microscopy and microstructured vascular graft design 🏛 FDA 510(k) and De Novo pathways as discussed in the recording Life of Flow is hosted by Dr. Lucas Ferrer & Dr. Miguel Montero-Baker. 🌐 Website: https://lifeofflowpodcast.com ▶ YouTube: https://www.youtube.com/@LifeofFlowPodcast 🎧 Listen: Spotify https://open.spotify.com/show/5GMv47SJ0ePxbjtIb1GZ5U · Apple https://podcasts.apple.com/us/podcast/life-of-flow/id1705596604 📩 Partner with the show: info@lifeofflowpodcast.com Connect with the hosts: Dr. Lucas Ferrer — [Lucas LinkedIn] Dr. Miguel Montero-Baker — https://www.linkedin.com/in/miguel-montero-baker-a44354214/ Follow the show: Instagram https://www.instagram.com/lifeofflowpodcast/ · X https://x.com/vascularpodcast · LinkedIn https://www.linkedin.com/company/lifeofflow Educational only; never medical advice. Confirm product and regulatory timelines with PECA Labs.

Your title, schedule and reputation disappear in the jungle. What remains may be the first honest version of you that you have met in years. David Villanueva is the founder of Sukia Travel, a wildlife guide, adventure specialist and wilderness operator in Costa Rica’s Osa Peninsula. Michel Reijnen is a Dutch vascular surgeon who entered the expedition looking for a deeper experience of the jungle and returned with a different relationship to attention, identity and time. The Crucible is not a luxury retreat. Participants fly into Drake Bay, surrender familiar status, turn off their phones and travel roughly 100 kilometers through humidity, mud, rivers and steep terrain. They carry equipment, sleep in hammocks, journal, meditate and learn from indigenous guides, survival specialists, silence and the forest itself. David calls the underlying structure the FORGE protocol: leave the familiar frontier, meet a real ordeal, reflect and reframe the experience, cross a symbolic gateway, then return with a personal code. In this conversation, David and Michel reveal: ⬛ Why a doctor, lawyer and executive become equals once everyone is exhausted and covered in mud ⬛ How an ordeal can become empty adventure tourism unless reflection turns discomfort into meaning ⬛ Why constant planning and replaying the past can quietly remove you from the life happening now ⬛ What Michel discovered when he gave up his phone, camera and every connection to his ordinary identity ⬛ How a 30-kilometer jungle day, river crossings and the “Witch Hill” expose the stories people use to survive ⬛ Why fear should be recognized and processed rather than denied or muscled through ⬛ How shared leadership, community and kincentricity challenge the Western obsession with the individual Do high performers need a place they cannot control to see what controls them? Timestamps: 00:00 Pre-recording setup 03:45 Welcome to Life of Flow 07:22 David’s path into wildlife and adventure guiding 08:48 Why the jungle strips away status 09:46 The FORGE protocol for transformation 12:36 Reflection, symbolism and the gateway 16:09 What transformation actually means 18:50 Inside the 10-Day Jungle Crucible 23:02 The 30-kilometer day and the Witch Hill 24:42 Roughly 100 kilometers through the jungle 26:10 Kincentricity and the technology of cooperation 43:34 The happiest and most frightening moments 45:47 Getting lost without clean water 48:29 Purpose, fear and leadership under pressure 52:16 Michel’s edge in the jungle 56:08 Who may need an experience like this 58:07 How to find the Jungle Crucible 60:28 Why David limits the number of expeditions 61:32 Closing thoughts.... Why this episode matters: High achievement can become a sophisticated form of avoidance. Calendars stay full, the next task is already in the mind, and yesterday’s mistakes keep playing after the day has ended. Michel says the expedition forced him out of that loop. In the jungle, inattention is not merely inefficient; it can be dangerous. Presence becomes practical. When his mind wandered under exhaustion, David taught him to name three things he could see and three things he could hear. David is equally careful not to sell hardship as transformation by itself. A punishing hike can remain another trophy for the ego. His method pairs controlled friction with journaling, meditation, conversation and a deliberate return. The point is not to collect a dramatic story; it is to notice which beliefs surface under pressure, decide what deserves to change and carry a usable code home. That distinction—between surviving an ordeal and integrating it—is the intellectual center of the episode. Follow the guests: David Villanueva and the Jungle Crucible: https://sukiatravel.com/the-jungle-crucible/ Michel Reijnen: https://www.linkedin.com/in/michel-reijnen-060991aa/ Resources mentioned in this episode: 🏢 Sukia Travel: https://sukiatravel.com/ 🌿 Costa Rica’s Osa Peninsula and Corcovado National Park 📚 Carl Jung’s work on archetypes and the collective unconscious 🧭 The FORGE protocol, journaling, meditation and symbolic rites of passage 🤝 Kincentricity, community, shared leadership and reintegration Life of Flow is hosted by Dr. Lucas Ferrer & Dr. Miguel Montero-Baker. 🌐 Website: https://lifeofflowpodcast.com ▶ YouTube: https://www.youtube.com/@LifeofFlowPodcast 🎧 Listen: Spotify https://open.spotify.com/show/5GMv47SJ0ePxbjtIb1GZ5U · Apple https://podcasts.apple.com/us/podcast/life-of-flow/id1705596604 📩 Partner with the show: info@lifeofflowpodcast.com Connect with the hosts: Dr. Lucas Ferrer — [Lucas LinkedIn] Dr. Miguel Montero-Baker — https://www.linkedin.com/in/miguel-montero-baker-a44354214/ Follow the show: Instagram https://www.instagram.com/lifeofflowpodcast/ · X https://x.com/vascularpodcast · LinkedIn https://www.linkedin.com/company/lifeofflow Educational discussion only. The Jungle Crucible is physically and psychologically demanding, uses screening, and is not medical care or therapy.

We built better stents, wires, and balloons—then kept sending fistulas back into the same chair-side injury loop. Dr. Aaron Moore is a Jacksonville vascular surgeon who spent about 15 years in Navy/military medicine before choosing private-practice independence. In Jacksonville he became a high-volume dialysis access operator—roughly two to three hundred fistulas and grafts a year—and watched repaired access return from the unit damaged again. When an interventional radiology colleague showed him an early mapping concept years before this recording, he moved from intrigued investor to operator and VP of clinical affairs. He names the product Veristra: dialysis management software for the cannulation chair. The stakes are irreversible for patients living on access. Upstream craft can be exquisite, then vanish into what Moore calls the dialysis-unit black hole: create the fistula, lose continuous history chair-side, injure it through repeat same-area puncture, rescue it with more devices, and send it back into the same mechanism. He reframes the residency joke that dialysis “cuts with an ax.” Chair-side staff work under time pressure—often about 12–15 minutes from door to machine—with variable clinical background, heavy OJT, and turnover he cites as high as ~35% in some literature. Without a map, patients become the memory, and area puncture wins because it is fast and familiar. In this conversation, Dr. Aaron Moore reveals: ⬛ Why “surgeon creates → unit black hole → repair → repeat” is the core failure loop ⬛ How area puncture becomes default while rope-ladder remains proven and under-implemented ⬛ What changes when arterial and venous sticks are photographed, scaled, color-aged, and heat-mapped ⬛ Why recording cannulation points without showing history still leaves staff flying blind ⬛ How hazard markers preserve pain, twists, and “avoid here” knowledge that turnover erases ⬛ Why preventing pseudoaneurysms at the point of care beats only predicting referral timing ⬛ How low the field set the bar when ~50% annual fistula patency can pass as acceptable The Dialysis Unit Is a Black Hole: Why Fistulas Keep Failing | Aaron Moore Timestamps: 00:00 The dialysis access black hole 00:45 Life of Flow intro 00:59 Welcome back: entrepreneurship, not war stories 01:47 Navy medicine to Jacksonville independence 05:02 Owning dialysis access in private practice 05:34 Micrometer surgery, missing chair-side tools 09:31 Same cannulation paradigm since 1965 09:55 Why the dialysis unit feels like a black hole 10:31 Overbuilt rescue tech, underbuilt point of care 12:29 Area puncture vs rope-ladder reality 13:44 Photograph, QR scale, mark every stick 15:25 Heat maps that show where you’ve been 18:26 From curious investor to operator 25:24 Pilot lesson: recording without history is still blind 32:33 Stop predicting pseudoaneurysms—prevent the pattern 34:22 A 50% annual fistula patency bar 37:28 The 1973 engineer who mapped every poke 50:04 Pilot size, clustering trend, what to prove next Follow the guest: LinkedIn: [https://www.linkedin.com/in/vascularmdjax](https://www.linkedin.com/in/vascularmdjax) In-episode product: Veristra access mapping, hazard notes, heat maps, and LADX/LADDEX stick-dispersion score Origin thread: IR colleague concept; company ~2022; Moore VP of clinical affairs Resources mentioned: Area puncture vs rope-ladder technique (conceptual literature discussion; no single citation titled on-air) Guest-stated CMS context: more than 500,000 U.S. patients dialyzing; ~70–80% needing annual access intervention; cost band about $18,000–$35,000 FDA breakthrough device designation and roughly year-long FDA process as narrated 1973 congressional dialysis reimbursement fight; patient-engineer who plotted every access point on graph paper Value-based/capitated dialysis economics as a reason access maintenance spend matters Pilot arms: history-visible vs record-only; multi-center ambitions discussed Watch the black-hole diagnosis, the heat-map workflow, and the closing honesty check: behavior change only matters if intervention burden and patient time in rescue mode actually fall. Life of Flow is hosted by Dr. Lucas Ferrer & Dr. Miguel Montero-Baker. 🌐 Website: [https://lifeofflowpodcast.com](https://lifeofflowpodcast.com/) ▶ YouTube: [https://www.youtube.com/@LifeofFlowPodcast](https://www.youtube.com/@LifeofFlowPodcast) 🎧 Listen: Spotify [https://open.spotify.com/show/5GMv47SJ0ePxbjtIb1GZ5U](https://open.spotify.com/show/5GMv47SJ0ePxbjtIb1GZ5U) · Apple [https://podcasts.apple.com/us/podcast/life-of-flow/id1705596604](https://podcasts.apple.com/us/podcast/life-of-flow/id1705596604) 📩 Partner with the show: info@lifeofflowpodcast.com Connect with the hosts: Prepared for Life of Flow publication. Educational discussion only; not individualized medical advice. The core question is whether better chair-side memory can reduce