A Markov Chain Model for Medical Record Analysis

Liu, Chih-Ming; Wang, Kuo-Ming; Guh, Yuh-Yuan

doi:10.1057/jors.1991.77

Cited by 7 publications

(2 citation statements)

References 12 publications

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“…The aim was to develop an algorithm to describe the sequence of possible events where the probability of each event depends on the state reached in the previous event. [6][7][8] The process starts at one state and moves to another state with a calculated probability, called the transition probability. The latent states were defined by the data monitoring and steering committee to be as clinically relevant as possible.…”

Section: Discussionmentioning

confidence: 99%

“…A Markov chain was built to describe the evolution of the patients hospitalized for a PCBI. The aim was to develop an algorithm to describe the sequence of possible events where the probability of each event depends on the state reached in the previous event 6–8 . The process starts at one state and moves to another state with a calculated probability, called the transition probability.…”

Section: Methodsmentioning

confidence: 99%

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Surgical exploration for stable patients with penetrating cardiac box injuries: When and how? A cohort of 155 patients from Marseille area

Vasse

Belaroussi

Avaro

et al. 2022

J Trauma Acute Care Surg

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BACKGROUND:The management of penetrating thoracic injuries in moribund or unstable patients is clearly described in contrast to that of stable patients, particularly for those with a cardiac box injury. This anatomic location suggests a potentially lethal cardiac injury and requires urgent therapeutic decision making. The present study aims at determining when surgical exploration is beneficial for stable patients presenting with penetrating cardiac box injuries (PCBIs). METHODS:This was a retrospective study of stable civilian patients with PCBI referred to level I trauma centers in the Marseille area between January 2009 and December 2019. Using post hoc analysis of the management outcomes, patients whose surgery was considered therapeutic (group A) were compared with those whose surgery was considered nontherapeutic and with nonoperated patients (group B). RESULTS:A total of 155 patients with PCBI were included, with 88% (n = 137) of stab wound injuries. Overall, surgical exploration was performed in 54% (n = 83), considered therapeutic in 71% (n = 59), and performed by video-assisted thoracoscopy surgery in 42% (n = 35) with a conversion rates of 14% (n = 5). Initial extended fast assessment with sonography for trauma revealed the presence of hemopericardium in 29% (n = 29) in group A versus 9.5% (n = 7) in group B, p = 0.010, and was associated with a negative predictive value of 93% regarding the presence of a cardiac injury. Chest tube flow was significantly higher in patients who required surgery, with a median (interquartile range) of 600.00 (350.00-1200.00) mL versus 300.0 (150.00-400.00) mL ( p = 0.001). CONCLUSION:Extended fast assessment with sonography for trauma and chest tube flow are the cornerstones of the management of stable PCBI. Video-assisted thoracoscopy represents an interesting approach to check intrathoracic wounds while minimizing surgical morbidity.

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Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%