Semester 2

๐Ÿซ€Med-Surg I

Cardiac, respiratory, endocrine โ€” where the exam gets mean.

Med-Surg I is the semester where 'study harder' stops working and 'study differently' starts. The content is systems-based, but the exams are complication-based: they hand you a set of vitals and labs and ask what's going wrong before anyone charts it.

Real talk about this course

  • โ€ขLearn complications, not just diseases. Every unit's exam questions are about what goes wrong.
  • โ€ขLabs are the language. If you can't interpret Kโบ, Naโบ, ABGs, BNP, and troponin cold, you'll bleed points.
  • โ€ขLeft-sided vs right-sided heart failure gets asked every single semester until you graduate.
  • โ€ขYou will be tested on teaching. What you tell the patient at discharge is a real question type.

Grade savers ๐Ÿ‘‘

  • Chest pain: MONA is the order they teach, but assess and get the 12-lead first.
  • Any 'sudden' + 'shortness of breath' = think PE until proven otherwise.
  • Potassium is the drama queen of the lab panel. Both high and low kill via the heart.
  • New confusion in an older adult is a symptom, not a personality.

Left vs right heart failure

Guaranteed exam question, every term, forever.

Memory trick

Left = Lungs (crackles, dyspnea, orthopnea, pink frothy sputum). Right = Rest of the body (JVD, peripheral edema, ascites, weight gain, hepatomegaly).

Left drowns you, right swells you. Two words, ten points.

ABG interpretation in 15 seconds

Respiratory unit lives here and it feels impossible until it clicks.

Memory trick

ROME: Respiratory Opposite (pH โ†‘ / COโ‚‚ โ†“ = resp alkalosis), Metabolic Equal (pH โ†“ / HCOโ‚ƒ โ†“ = metabolic acidosis). Look at pH first, then match it to COโ‚‚ or HCOโ‚ƒ.

pH tells you who's guilty. COโ‚‚ and bicarb tell you which one did it.

Potassium: the killer on both ends

Hyper- and hypokalemia both cause lethal dysrhythmias with opposite EKG changes.

Memory trick

High Kโบ = tall peaked T waves, muscle weakness, bradycardia โ†’ calcium gluconate to protect the heart, insulin + D50 to shift, kayexalate/dialysis to remove. Low Kโบ = flat T waves + U waves, cramps โ†’ replace slowly, NEVER IV push.

IV push potassium is a felony against your patient. Diluted and pumped only.

Chest pain workup order

Priority questions want the sequence, not the treatment list.

Memory trick

Assess โ†’ 12-lead EKG within 10 minutes โ†’ aspirin (chewed) โ†’ nitro (check SBP >90, no PDE5 inhibitors in 24โ€“48h) โ†’ morphine โ†’ troponin. Oxygen only if SpOโ‚‚ <90%.

Nitro + Viagra = a blood pressure that leaves the building. Always ask.

DKA vs HHS

Endocrine's favorite compare-and-contrast.

Memory trick

DKA = type 1, glucose 300โ€“600, ketones + acidosis, Kussmaul breathing, fruity breath, sicker faster. HHS = type 2, glucose >600, no ketones, profound dehydration, altered LOC, sneaks up over days. Both: fluids first, then insulin drip, then watch potassium crash.

Insulin drives Kโบ into the cell. Your patient's Kโบ will tank. Watch it like a hawk.

COPD vs asthma management

The oxygen question ('how much do I give a COPD patient') is a trap when you overthink it.

Memory trick

Target SpOโ‚‚ 88โ€“92% in COPD. Pursed-lip breathing on exhalation. Asthma: rescue (albuterol) before controller (steroid inhaler), rinse the mouth after steroids. A silent chest in asthma is an emergency, not improvement.

Quiet asthma isn't calm. It's a patient who can't move air.

Post-op complication timeline

Med-Surg loves 'day 3 post-op, patient has ___' stems.

Memory trick

First 24h: bleeding, atelectasis, urinary retention. Day 2โ€“3: fever from atelectasis/pneumonia. Day 3โ€“5: DVT/PE, wound infection. Day 5โ€“7: dehiscence/evisceration (cover with sterile saline gauze, low Fowler's, knees bent, call surgery).

Thyroid storm vs myxedema coma

Endocrine emergencies with opposite everything.

Memory trick

Storm = hyper gone wild: fever, tachycardia, agitation โ†’ cool them, beta blocker, antithyroid meds. Myxedema = hypo gone flat: hypothermia, bradycardia, hypoventilation โ†’ warm slowly, IV levothyroxine, airway support.

Keep going

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