This document provides an introduction to trauma ultrasound and describes some common diagnostic tools used in trauma patients, including DPL, FAST exam, and abdominal CT scan. It discusses when each tool is most appropriate, limitations, and examples of their use. DPL allows rapid assessment but is invasive, while FAST exam is non-invasive but operator dependent and less sensitive. CT scan is most sensitive but requires more resources. The document advocates initially using FAST exam and then CT scan for trauma patient evaluation.
17. Trauma Service /
KMUH
• 10% is identified with infusing 400ml10% is identified with infusing 400ml
salinesaline
• 97% is noted with infusing 1L saline97% is noted with infusing 1L saline
Branney et al. J Trauma 1995Branney et al. J Trauma 1995
18. Trauma Service /
KMUH
LUQ viewLUQ view
• Longitudinal scanLongitudinal scan
• Transverse scanTransverse scan
• Intercostal scanIntercostal scan
• Hypochondral scanHypochondral scan
• Spleen may be obscured during deepSpleen may be obscured during deep
inspirationinspiration
• May observe pleural space simultaneouslyMay observe pleural space simultaneously
19. Trauma Service /
KMUH
Same VictimSame Victim
Subcapsular hematoma Pleural effusionSubcapsular hematoma Pleural effusion
22. Trauma Service /
KMUH
Echo guided pericardiocentesisEcho guided pericardiocentesis
• EquipmentEquipment
• 16-gauge short-bevel large-bore needle16-gauge short-bevel large-bore needle
• 30- or 50-mL syringe30- or 50-mL syringe
• Echo- guidedEcho- guided
• Local anesthesiaLocal anesthesia
• Sterile supplies and povidone-iodineSterile supplies and povidone-iodine
solutionsolution
23. Trauma Service /
KMUH
Suprapubic viewSuprapubic view
• Longitudinal scanLongitudinal scan
• Transverse scanTransverse scan
• Best viewed under full bladderBest viewed under full bladder
• Physiologic fluidPhysiologic fluid
31. Trauma Service /
KMUH
FAST or not?FAST or not?
• 100 victims of penetrating torso trauma assessed by our trauma100 victims of penetrating torso trauma assessed by our trauma
teams. 48 stab wounds, 51 gunshot wounds, and 1 punctureteams. 48 stab wounds, 51 gunshot wounds, and 1 puncture
wound..wound..
• The overall accuracy of the US examination in penetrating torsoThe overall accuracy of the US examination in penetrating torso
trauma was 87%, with a sensitivity of 64% and a specificity oftrauma was 87%, with a sensitivity of 64% and a specificity of
96%. The positive predictive value was 86% and negative96%. The positive predictive value was 86% and negative
predictive value was 87%...predictive value was 87%...
• The US examination lacks sensitivity to be used alone inThe US examination lacks sensitivity to be used alone in
determining operative interventiondetermining operative intervention……Rarely does USRarely does US
information contribute to the management ofinformation contribute to the management of
patients with penetrating abdominal injuriespatients with penetrating abdominal injuries
*A PROSPECTIVE EVALUATION OF ULTRASONOGRAPHY DIAGNOSIS OF PENETRATING*A PROSPECTIVE EVALUATION OF ULTRASONOGRAPHY DIAGNOSIS OF PENETRATING
ABDOMINAL INJURYABDOMINAL INJURY Dror Soffer MD, Mark McKenney et al. Ann Emerg Med 2003Dror Soffer MD, Mark McKenney et al. Ann Emerg Med 2003
32. Trauma Service /
KMUH
FAST or not?FAST or not?
• 149 patients with suspicion for abdominal trauma were149 patients with suspicion for abdominal trauma were
evaluated…leaving 134 patients for analysis.evaluated…leaving 134 patients for analysis.
• There were 111 true negative FAST exams, 5 true positives, 17There were 111 true negative FAST exams, 5 true positives, 17
false negatives, and 2 false positives.false negatives, and 2 false positives.
• Chi-square analysis showed significant discordance betweenChi-square analysis showed significant discordance between
FAST and CT (p<0.001).FAST and CT (p<0.001).
• Utilization of FAST as a screening tool for BAI inUtilization of FAST as a screening tool for BAI in
hemodynamically stable trauma patients results inhemodynamically stable trauma patients results in under-under-
diagnosisdiagnosis of intraabdominal injury…of intraabdominal injury…
• Patients with suspected abdominal traumaPatients with suspected abdominal trauma
should undergo routine CT scanning.should undergo routine CT scanning.
*Not So Fast!*Not So Fast! M.T. Miller, ND, M.D. Pasquale et al. J Trauma 2002M.T. Miller, ND, M.D. Pasquale et al. J Trauma 2002
36. Trauma Service /
KMUH
DPLDPL
• WhenWhen
• 需立即作需立即作 YESYES 或或 NONO 決定時決定時
• Hemodynamic instabilityHemodynamic instability
• 需進行大手術但無需進行大手術但無 CTCT 檢 時查檢 時查
• Rare these daysRare these days
• 意識不清但需排除腸道損傷時意識不清但需排除腸道損傷時
37. Trauma Service /
KMUH
DPLDPL
• WhyWhy
• Quick decisionsQuick decisions
• Looking primarily for gross bloodLooking primarily for gross blood
38. Trauma Service /
KMUH
DPLDPL
• Why notWhy not
• 為侵襲性檢查為侵襲性檢查
• Possible complicationPossible complication
• 非治療性開腹手術比率過高非治療性開腹手術比率過高
• Non-therapeutic lap rate app 30%!Non-therapeutic lap rate app 30%!
• 對穩定血行之病患並不適合對穩定血行之病患並不適合
39. Trauma Service /
KMUH
FASTFAST
• WhenWhen
• 需立即作需立即作 YESYES 或或 NONO 決定時決定時
• Hemodynamic instabilityHemodynamic instability
• 穿刺傷之心包膜腔檢視穿刺傷之心包膜腔檢視
• Detect for fluidDetect for fluid
40. Trauma Service /
KMUH
FASTFAST
• WhenWhen
• 69 patients with69 patients with initial BP< 90 mmHginitial BP< 90 mmHg
• 22 with positive FAST22 with positive FAST
• 19(86%)needed a laparotomy19(86%)needed a laparotomy
• 47 with negative FAST47 with negative FAST
• 0(0%) needed a laparotomy0(0%) needed a laparotomy
Wherrett LJ. J Trauma 1996
42. Trauma Service /
KMUH
FASTFAST
• WhyWhy
• Can be done rapidly!Can be done rapidly!
• Positive FASTPositive FAST
• Time required 19+/-5 sec.Time required 19+/-5 sec.
• Just for internal bleeding or cardiac tamponadeJust for internal bleeding or cardiac tamponade
• Negative FASTNegative FAST
• Time required 154+/-13 sec.Time required 154+/-13 sec.
Wherrett LJ. J Trauma 1996
43. Trauma Service /
KMUH
FASTFAST
• Why notWhy not
• 對穿刺傷敏感度不佳對穿刺傷敏感度不佳
• 評估損傷不 全面夠評估損傷不 全面夠
• 操作者水平影響判讀操作者水平影響判讀
• 無法成為標準篩檢工具無法成為標準篩檢工具
49. Trauma Service /
KMUH
Abdominal CTAbdominal CT
• Why notWhy not
• Multi-institutional study for small bowelMulti-institutional study for small bowel
injuryinjury
• 13% without CT findings13% without CT findings
• 21% with solid organ injuries21% with solid organ injuries
• 33% with peritoneal signs33% with peritoneal signs
Fakhry J Trauma 2003