Surgery Shelf Prep!

Electrolyte imbalances can make or break your management on the wards and in the OR. Sodium, the OG electrolyte, has a way of testing your knowledge under pressure—whether it’s hyponatremia in a trauma patient or hypernatremia in the ICU.

In this high-yield episode, Chris and Mars break down everything you need to know about sodium disorders for the surgery shelf exam. From differentiating Cerebral Salt Wasting from Syndrome of Inappropriate Antidiuretic Hormone to decoding Diabetes Insipidus, they cover the pathophysiology, diagnostic pearls, and life-saving treatment strategies—plus the critical correction rates you can’t afford to forget.

We cover: ✅ How to tell Cerebral Salt Wasting from Syndrome of Inappropriate Antidiuretic Hormone using volume status ✅ The sodium correction rules to avoid osmotic demyelination syndrome and cerebral edema ✅ Thiazide diuretic hyponatremia and why restarting them is a trap ✅ Pseudo-hyponatremia in hyperglycemia and how to calculate the corrected sodium ✅ Central vs. Nephrogenic Diabetes Insipidus, the DDAVP test, and targeted treatments

Perfect for med students prepping for the shelf, surgery residents sharpening their inpatient management, and anyone who wants to avoid dangerous sodium correction pitfalls.

High-voltage shocks and lightning strikes are devastating—but the hidden muscle damage, lethal arrhythmias, and silent toxins offer a chance to make a difference in a patient's life.

In this high-yield episode, Chris and Mars break down the full spectrum of electrical and thermal trauma you need to know cold for test day. From the iceberg effect of high-voltage contact burns to the sneaky labial artery bleed in a toddler’s mouth, they cover recognition, work-up, management, and—most importantly—the classic traps. You’ll also learn the must-know formulas, drug mechanisms, and airway decisions to save lives.

Key Takeaways

• High-voltage contact burns: tiny entry wounds can hide massive deep muscle necrosis; aggressive fluids and urine alkalinization prevent renal failure.
• Low-voltage oral burns: always warn caregivers about a delayed day 5–10 labial artery hemorrhage.
• Lightning strikes: treat apnea first; cardiac rhythm often restarts spontaneously.
• Electrical-induced arrhythmias: anyone with loss of consciousness or high-voltage exposure needs 24-hour telemetry—even if the first ECG looks normal.
• Rhabdomyolysis: start large-volume crystalloids and bicarbonate immediately; never wait for a creatine kinase value.
• Compartment syndrome: delta pressure under 30 mm Hg demands prompt two-incision fasciotomy; distal pulses do not rule it out.
• Escharotomy: circumferential chest burns with rising peak airway pressures require mid-axillary incisions before distal ischemia sets in.
• Inhalation injury: facial burns plus carbonaceous sputum mean early endotracheal intubation and fiber-optic bronchoscopy within 24 hours.
• Parkland formula: 4 mL × weight (kg) × %TBSA; give half in the first 8 hours, half in the next 16.
• Carbon monoxide and cyanide: pulse oximetry is useless; get carboxyhemoglobin levels and treat cyanide with hydroxocobalamin, not sodium nitrite, in smoke inhalation cases.

Perfect for med students who want to lock in the algorithms, avoid shelf traps, and feel ready for any shock—literal or figurative—that comes their way. Tune in, review your ABCs, and crush those burn and electrical injury questions.

Compartment pressure can rise fast—and a missed diagnosis means muscle death. Meanwhile, crushed muscle spills toxins into the bloodstream, and a long-bone fracture can shower fat into the lungs before anyone blinks.

In this episode, Chris and Mars unpack three orthopedic trauma syndromes every surgery clerk must spot instantly: Compartment Syndrome, Rhabdomyolysis, and Fat Embolism Syndrome. You’ll learn to recognize hallmark presentations, understand the pathophysiology that makes each condition dangerous, and nail the definitive management steps that keep patients alive and limbs intact.

We break down:

• How “pain out of proportion” and “pain on passive stretch” trump pulses in diagnosing Compartment Syndrome
• Why prompt fasciotomy—every compartment, every time—is the only correct answer
• The mechanism behind myoglobin-induced renal failure in Rhabdomyolysis and why a dipstick that’s positive for blood without red cells is the giveaway
• Key contraindications to succinylcholine, including large burns and spinal injuries, because of hyperkalemia risk
• The classic triad of Fat Embolism Syndrome—hypoxia, confusion, petechiae—and the supportive care that saves lives

Perfect for med students gearing up for the surgery shelf—and anyone who never wants to miss a limb- or life-threatening complication.

Hit play, keep those high-yield facts fresh, and get ready to dominate your ortho trauma questions!

One yank of a toddler’s arm or a split-second dashboard hit can spell disaster for tiny nerves and big joints. Don’t let routine-looking fractures and dislocations blindside you on exam day—or in the trauma bay.

In this episode, Chris and Mars break down four classic musculoskeletal injuries that love to show up on the shelf: mid-shaft clavicle fractures with Erb palsy, Nursemaid’s Elbow, posterior hip dislocations, and anterior hip dislocations. You’ll learn how to spot the tell-tale limb positions, understand the underlying nerve jeopardy, and master the swift interventions that save function (and medico-legal headaches).

We cover: ✅ Why more than 2 cm of clavicle shortening flips the switch from sling to surgery ✅ The “waiter’s-tip” arm and other neonate red flags you cannot ignore ✅ Hyper-pronation vs. supination-flexion—when each reduction trick shines for Nursemaid’s Elbow ✅ The six-hour clock that decides sciatic-nerve fate in posterior hip dislocation ✅ How a palpable femoral head in the groin separates anterior dislocation from neck fracture ✅ Hidden vascular threats—subclavian and femoral—and the imaging that finds them fast ✅ High-yield pitfalls: tight figure-eight braces, unnecessary X-rays, skipped nerve exams, and delayed reductions

Perfect for medical students prepping for the surgery shelf—or anyone who wants to keep nerves intact through the chaos of trauma care.

Hit play, lock in those limb positions, and get ready to ace your next musculoskeletal question set!

Nerve injuries love to hide behind broken bones—and if you miss them, the consequences can be devastating. Make sure a wrist-drop or badge-patch numbness never slips past you again.

In this upbeat episode, Chris and Mars dissect three fracture-related nerve injuries that show up again and again on the surgery shelf (and in real life): axillary nerve palsy with proximal humerus fractures, radial nerve palsy with mid-shaft humerus fractures, and ulnar nerve palsy with distal humerus or medial epicondyle fractures. You’ll hear classic presentations, learn the anatomic “why,” and lock in the key diagnostic steps and treatment pitfalls that separate pass from honors.

We cover

• How badge-patch numbness and loss of shoulder abduction point straight to an axillary nerve hit
• Why spiral mid-shaft fractures set the stage for radial nerve laceration and wrist-drop
• The tell-tale numbness in the ring and pinky fingers that flags an ulnar nerve injury—and how claw hand develops
• Essential pre- and post-reduction neuro exams that protect patients (and you) from iatrogenic palsy claims
• Casting and positioning mistakes that can turn a stable fracture into a nerve disaster

Perfect for med students prepping for the shelf—or anyone who never wants to miss a hidden nerve injury on call. Press play, run those neuro checks, and keep climbing toward surgical mastery!

Pelvic trauma can wreck more than bones—it can shred urethras, pop bladders, and crank intra-abdominal pressure past the danger zone. Don’t let hidden hematuria, missed CT cystograms, or a tight fascial closure sink your patient—or your shelf score.

In this episode, Chris and Mars break down three abdominal trauma heavy-hitters you absolutely can’t miss on exam day:

• Pelvic Fracture Urethral Injuries (PFUI): classic findings, why a retrograde urethrogram beats a “blind” Foley every time, and timing for suprapubic diversion versus delayed urethroplasty
• Bladder Ruptures: extraperitoneal versus intraperitoneal mechanisms, CT cystogram technique, and how treatment flips from catheter drainage to mandatory OR repair
• Abdominal Compartment Syndrome: spotting the lethal triad, measuring bladder pressure the right way, and damage-control laparotomy tricks to prevent rebound compartment syndrome

You’ll lock in:

• Key anatomy and pathophysiology that explain each injury pattern
• Shelf-level imaging pearls—including the must-know 350 mL contrast rule for CT cystograms
• Step-by-step management algorithms and common pitfalls that trip up trainees
• Five rapid-fire, high-yield facts to cement the take-aways before sign-off

Perfect for med students gearing up for the surgery shelf—and for anyone who wants to keep their trauma reflexes razor sharp. Hit play, review your ABCs, and get ready to dominate those abdominal-trauma questions!

Hidden abdominal injuries can fool even the sharpest trauma team. Don’t let seat-belt bruises, subtle CT findings, or delayed enzyme rises trip you up on exam day.

In this episode, Chris and Mars unravel three shelf-favorite abdominal trauma patterns that demand a high index of suspicion: Hollow Viscus tears, Duodenal and Pancreatic “handle-bar” injuries, and the Seat-Belt Sign paired with Chance fractures. You’ll learn the tell-tale presentations, key imaging pearls, and must-know operative decisions that separate pass from honors.

We cover: ✅ Why a “normal” early CT never clears a small-bowel perforation ✅ Mesenteric tears versus blow-out ruptures—and what each looks like on contrast CT ✅ Rising amylase traps and when to push for MRCP or ERCP ✅ Management ladder from NG decompression to distal pancreatectomy and pyloric exclusion ✅ Seat-belt bruises as dual clues for bowel injury and L1-L3 flexion-distraction fractures ✅ Five rapid-fire facts to lock in before test day

Perfect for med students prepping for the surgery shelf—or anyone who wants to stay cool when blunt trauma gets sneaky.

Hit play, trust your gut (and your repeat imaging), and get ready to dominate those abdominal trauma questions!

Abdominal trauma isn’t just shelf-worthy—it’s life-saving knowledge in the trauma bay. From subtle splenic bleeds to delayed bilomas, this episode breaks down everything you need to master solid organ injuries.

Chris and Mars walk you through the classic presentations, imaging pathways, and life-or-death decisions around spleen, liver, and kidney trauma. Whether it’s a FAST-positive patient crashing in the trauma bay or a sneaky Page kidney showing up days later, we’ve got your back.

We cover: ✅ Why left-sided rib fractures scream splenic injury ✅ The critical post-splenectomy vaccines and platelet traps ✅ How to catch and manage a biloma ✅ Why a delayed excretory phase CT is clutch for renal trauma ✅ What to do when a Page kidney sends BP through the roof

Get these solid organ injury pearls locked down so you can crush the shelf—and save lives. Hit play and prep like a trauma pro.

Abdominal trauma isn’t just high-yield—it’s high-stakes. One missed diagnosis, one delayed move, and your patient’s outcome could spiral fast. That’s why mastering this topic is essential for the shelf—and for real-life emergencies.

In this episode, Chris and Mars break down abdominal trauma management like pros. From FAST algorithms to trauma laparotomy, you’ll learn how to quickly triage, resuscitate, and operate with confidence.

We cover: ✅ When to take a trauma patient straight to the OR—no detours ✅ What the FAST exam doesn’t tell you (and why that matters) ✅ How to recognize the lethal triad and crush your damage control steps ✅ Retroperitoneal hematoma zones and how NOT to make things worse ✅ Why a pelvic binder might save a life before you even order a scan

Perfect for med students prepping for the shelf, trauma rotations, or anyone who wants to stay sharp under pressure. Listen in and get FAST, focused, and fearless with abdominal trauma.

No bogus answers. Just life-saving knowledge. Let’s go.

Sternal fractures aren’t just bruises—and a “crunchy” neck might mean a trip to the OR. Don’t miss these deadly thoracic trauma patterns that hide in plain sight.

In this high-octane episode of Surgery Shelf Prep, Chris and Mars break down three clutch thoracic trauma topics that are critical for your shelf exam and real-life resuscitations: Sternal Fracture, Traumatic Pneumomediastinum, and Resuscitative Thoracotomy.

You'll learn to: ✅ Recognize sternal fractures as more than just broken bones—watch out for underlying cardiac contusions and aortic injuries ✅ Catch the Macklin effect in traumatic pneumomediastinum—and rule out deadly tracheal or esophageal perforations ✅ Know when (and when NOT) to crack the chest for a resuscitative thoracotomy ✅ Master chest tube thresholds for massive hemothorax ✅ Avoid pitfalls like discharging a patient with a missed RBBB or subtle esophageal leak

Perfect for med students, residents, and anyone who wants to stay cool in the trauma bay. Grab your scalpel—or at least your stethoscope—and hit play!