CMCPER Cirugía Plástica common mistakes
CMCPER Cirugía Plástica · Understand the traps and how to avoid them.
Confusing the vascular territories of the facial artery and superficial temporal artery when planning a local facial flap, and choosing a pivot point that does not actually reach the defect.
Candidates memorize named flaps but not the arc of rotation and the pedicle's dominant supply, so they pick a flap whose reach or axial pattern fails at the bedside.
What to do instead
For each regional flap, rehearse the pedicle origin, the pivot point, and the arc radius on a diagram; before committing, verify that the flap's distal tip can reach the defect's farthest corner without tension.
Selecting a breast implant pocket (dual-plane vs subglandular vs submuscular) without weighing soft-tissue pinch thickness, ptosis grade, and implant profile together.
The pocket decision is treated as a single variable instead of an interaction between coverage, glandular ptosis, and implant dimensions.
What to do instead
Use a structured preoperative worksheet: pinch thickness at the upper pole, sternal notch-to-nipple distance, base width, and desired projection; then justify the pocket choice in one sentence linking each measurement to the plan.
In burn resuscitation, calculating fluid with a formula and failing to titrate to urine output in the following hours.
Candidates anchor on the initial calculated volume as a fixed prescription rather than a starting estimate that must be adjusted hourly.
What to do instead
State the formula volume as a starting rate only, then define the titration target (urine output per hour by weight) and the action if output is above or below target; practice two worked examples with mid-course adjustment.
Misjudging the zone of injury in a contaminated hand wound and performing primary tendon or nerve repair within the traumatized zone.
The wound looks clean and the tendon ends are visible, so the candidate repairs immediately without accounting for the extended zone of soft-tissue injury.
What to do instead
Adopt a rule: in contaminated or crush wounds, debride and stage, mark tendon ends, and delay definitive repair; reserve primary repair for clean, sharp, well-vascularized wounds within hours.
Planning cleft lip repair timing and technique without distinguishing the lip from the palate timeline and without assessing the alveolus.
The lip and palate are mentally merged into one operation, so the candidate gives a single age and omits the alveolar and velar components.
What to do instead
Build a timeline card: lip repair around the rule-of-tens window, palate repair in the first year to protect speech, alveolar bone grafting at mixed dentition; state each milestone separately.
Documenting informed consent as a signature on a form without recording the discussion of alternatives, material risks, and the patient's questions.
Candidates treat consent as paperwork rather than a documented process, and they underestimate the legal weight of the conversation in Mexican practice.
What to do instead
Use a note template with four fields: alternatives discussed, material risks named, questions answered, and patient's own words of understanding; write it in the chart, not only on the form.
Answering facial fracture questions by naming the fracture eponym without linking it to the force vector, the displaced buttress, and the occlusal or ocular consequence.
Eponyms are easier to memorize than the biomechanics, so the candidate stops at the name and cannot reason about treatment priority.
What to do instead
For each fracture pattern, write the force direction, the buttresses involved, the functional threat (airway, vision, occlusion), and the sequence of repair; answer in that order.
Treating a skin graft and a flap as interchangeable options and choosing a graft for a bed with exposed bone, tendon, or hardware.
The candidate focuses on defect size and forgets that graft survival depends on a vascularized bed.
What to do instead
Apply the bed-first rule: inspect for periosteum, paratenon, or vascularized tissue; if absent, plan a flap. State the bed finding explicitly before naming the reconstruction.
In abdominoplasty and liposuction planning, ignoring the umbilical blood supply, the rectus plication effect on tension, and the risk of seroma, then being surprised by necrosis or fluid collections.
The operation is reduced to skin excision and fat removal without a vascular and dead-space analysis.
What to do instead
Preoperatively map the umbilical perforators, plan limited undermining, and plan dead-space control (progressive tension sutures, drains, compression); list these as explicit steps in the operative plan.
Calculating flap or graft viability from textbook percentages instead of the specific perfusion, pedicle geometry, and patient comorbidities in the case.
Basic-science percentages are memorized as facts and then applied without adjustment for smoking, diabetes, or pedicle length.
What to do instead
For each case, state the pedicle type, the perfusion territory, and the modifiable risk factors, then justify the flap design against those specifics rather than quoting a generic survival figure.