Unilateral diaphragmatic dysfunction following thoracic outlet surgery diagnosed by point-of-care ultrasound

Abstract Editor’s Perspective What We Already Know about This Topic What This Article Tells Us That Is New Background Postoperative diaphragmatic dysfunction after thoracic surgery is underestimated due to the lack of reproducible bedside diagnostic methods. We used point of care ultrasound to assess diaphragmatic function bedside in patients undergoing video-assisted thoracoscopic or thoracotomic lung resection. Our main hypothesis was that the thoracoscopic approach may be associated with lower incidence of postoperative diaphragm dysfunction as compared to thoracotomy. Furthermore, we assessed the association between postoperative diaphragmatic dysfunction and postoperative pulmonary complications. Methods This was a prospective observational cohort study. Two cohorts of patients were evaluated: those undergoing video-assisted thoracoscopic surgery versus those undergoing thoracotomy. Diaphragmatic dysfunction was defined as a diaphragmatic excursion less than 10 mm. The ultrasound evaluations were carried out before (preoperative) and after (i.e., 2 h and 24 h postoperatively) surgery. The occurrence of postoperative pulmonary complications was assessed up to 7 days after surgery. Results Among the 75 patients enrolled, the incidence of postoperative diaphragmatic dysfunction at 24 h was higher in the thoracotomy group as compared to video-assisted thoracoscopic surgery group (29 of 35, 83% vs. 22 of 40, 55%, respectively; odds ratio = 3.95 [95% CI, 1.5 to 10.3]; P = 0.005). Patients with diaphragmatic dysfunction on the first day after surgery had higher percentage of postoperative pulmonary complications (odds ratio = 5.5 [95% CI, 1.9 to 16.3]; P = 0.001). Radiologically assessed atelectasis was 46% (16 of 35) in the thoracotomy group versus 13% (5 of 40) in the video-assisted thoracoscopic surgery group (P = 0.040). Univariate logistic regression analysis indicated postoperative diaphragmatic dysfunction as a risk factor for postoperative pulmonary complications (odds ratio = 5.5 [95% CI, 1.9 to 16.3]; P = 0.002). Conclusions Point of care ultrasound can be used to evaluate postoperative diaphragmatic function. On the first postoperative day, diaphragmatic dysfunction was less common after video-assisted than after the thoracotomic surgery and is associated with postoperative pulmonary complications.

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Accuracy of Point-of-Care Ultrasound for Diagnosis of Skull Fractures in Children

PEDIATRICS ◽

10.1542/peds.2012-3921d ◽

2013 ◽

Vol 131 (6) ◽

pp. X22-X22

Keyword(s):

Point Of Care ◽

Point Of Care Ultrasound ◽

Skull Fractures ◽

Fractures In Children

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Case Report: When all claims that it is necrotizing fasciitis but Point of care ultrasound (POCUS) proves the opposite!

POCUS Journal ◽

10.24908/pocus.v3i1.13310 ◽

2018 ◽

Vol 3 (1) ◽

pp. 13-14

Author(s):

Hadiel Kaiyasah, MD, MRCS (Glasgow), ABHS-GS ◽

Maryam Al Ali, MBBS

Keyword(s):

Emergency Department ◽

Critical Care ◽

Case Report ◽

Soft Tissue ◽

Necrotizing Fasciitis ◽

Soft Tissue Infection ◽

Critical Care Unit ◽

Point Of Care ◽

Point Of Care Ultrasound ◽

Soft Tissue Infections

Soft tissue ultrasound (ST-USS) has been shown to be of utmost importance in assessing patients with soft tissue infections in the emergency department or critical care unit. It aids in guiding the management of soft tissue infection based on the sonographic findings.

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Pilot Project: Does formal bedside training of medical students with a FAST exam increase their knowledge and comfort level with ultrasound use in a community family medicine practice setting?

POCUS Journal ◽

10.24908/pocus.v2i2.13279 ◽

2017 ◽

Vol 2 (2) ◽

pp. 15-17

Author(s):

Rimi Sambi, MD ◽

Heather Sawula, MD ◽

Brent Wolfrom, MD ◽

Joseph Newbigging, MD

Keyword(s):

Medical Students ◽

Family Medicine ◽

Point Of Care ◽

Training Session ◽

Undergraduate Curriculum ◽

Knowledge Retention ◽

Comfort Level ◽

Point Of Care Ultrasound ◽

Medical Undergraduate ◽

Fast Exam

As point of care ultrasound (PoCUS) becomes increasingly popular and a standard of care in many clinical settings, the interest for integration in medical undergraduate curriculum is also growing [1]. This project aims to assess whether formal bedside Focused Abdominal Scan for Trauma (FAST) exam training of medical students increases their knowledge and comfort with the use of bedside ultrasound in a family medicine setting at Queen’s University. Third year medical students (n=18) were recruited to participate in a training session involving a 1-hour online video and 2-hour hands-on session. Knowledge based surveys were completed before and after the training. A survey was completed 4 months after the teaching session evaluating knowledge retention, comfort, and application of skills. Student knowledge of PoCUS and FAST increased and was maintained (pre-training 56%±20%, post-training 82%±10%, p<0.001). Self-evaluation of comfort performing a FAST examination (5-point Likert scale) similarly increased post-training session (pre-training 1.4±0.8, post-training 3.8±0.9, p<0.005), but decreased 4 months later (3±1.2, p<0.005). Students in this study were unanimously interested in ultrasound training and the methods used effectively increased theoretical knowledge and comfort with use. Students did not retain their comfort levels with FAST exam 4 months after the training session, nor did they have the opportunity to utilize the skills learned. Further evidence is required to identify the applicability of these results to undergraduate curriculum development.

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