Additional file 1: of Radiological assessment of chest compression point and achievable compression depth in cardiac patients

The presence of blood-filled structures beneath the centre of sternum at the internipple line level. Percentages do not sum up to 100 because several structures may be present in one patient. (DOCX 65 kb

Additional file 1 of Telephone triage and dispatch of ambulances to patients with suspected and verified acute stroke - a descriptive study

Supplementary Material

Examples of misclassified 8-s ECG samples from the public (left) and OHCA (right) databases.

<p>A VF is shown on top and two nonshockable rhythms below for both databases.</p

Performance analysis of single features for all datasets.

<p>Performance analysis of single features for all datasets.</p

Feature selection with BSTsel (top) and the <i>L</i>₁-LRsel (bottom) approaches.

<p>The results are shown for 4-s (left) and 8-s (right) segments for both public and OHCA databases. The mean BER is shown (with errorbars) for each subset size, and the horizontal line represents the subset selection threshold for the public (red) and OHCA (green) databases. The triangle and dot marks and their corresponding numbers represent the selected subset and the minimum BER subset, respectively.</p

Examples of ECG found in public (top) and OHCA (bottom) data.

<p>The top-left segment corresponds to a VF from CUDB (record, cu05) right after VF onset, and presents large amplitude and a fibrillation frequency of 4.5 Hz. The bottom-left segments were recorded during OHCA 5–10 minutes after VF onset, and have smaller amplitudes and fibrillation frequencies (3.5 Hz and 2.5 Hz). The top-right segment corresponds to a NSR from cu05 right before VF onset. The bottom-right segments are examples of PEA in OHCA patients. Both cases show aberrant QRS complexes and low heart rates. The bottom example presents an extremely low heart-rate of 15 beats per minute.</p

Processing times (ms) to compute the features when all features and optimal feature subsets are computed.

<p>Processing times (ms) to compute the features when all features and optimal feature subsets are computed.</p

Description of the datasets used for classification.

<p>Description of the datasets used for classification.</p

Decline in BER for the features selected using the <i>L</i>₁-LR or BST algorithms.

<p>Decline in BER for the features selected using the <i>L</i>₁-LR or BST algorithms.</p

Features selected with BSTsel and <i>L</i>₁-LRsel ordered by decreasing relevance.

<p>Features selected with BSTsel and <i>L</i>₁-LRsel ordered by decreasing relevance.</p