Systems and methods for evaluating patients for ischemic heart disease are provided. An example system includes a flow sensor to sense a respiratory flow, an analyzer to determine a respiratory gas composition of at least a portion of the respiratory flow, an ECG device configured to determine ST segment values, and a computing device. The computing device may be configured to: receive gas exchange measurements that are based on breath-by-breath data captured by the flow sensor and the analyzer during a cardiopulmonary exercise test that includes an exercise phase; receive ST segment values captured by the ECG device during the cardiopulmonary exercise test; determine an ischemic index value based on the received gas exchange measurements and ST segment values; and output the ischemic index. The ST segment values may include ST segment depression or elevation values and the ischemic index value may be determined from the ST segment depression/elevation values.

Disclosed is an electrocardiograph (ECG) lead wire. The left electrode (120) and the right electrode (130) of the ECG lead wire are stacked and enclose an accommodation hole (101) for an electrode contact to pass through. At least one of the left electrode (120) and the right electrode (130) is made of an elastic material and/or is driven by an elastic member, so that the left electrode (120) and the right electrode (130) can move relative to each other under the action of an external force to widen the accommodation hole (101), and can move relative to each other under an elastic action force to narrow the accommodation hole (101). Since the size of the accommodation hole (101) can change, the electrode holder can be adapted to electrode contacts of various sizes on the market and makes same be firmly connected, thereby ensuring the stability and reliability of signal transmission.

The invention provides a neck-worn sensor for simultaneously measuring a blood pressure (BP), pulse oximetry (SpO2), and other vital signs and hemodynamic parameters from a patient. The neck-worn sensor features a sensing portion having a flexible housing that is worn entirely on the patient's chest and encloses a battery, wireless transmitter, and all the sensor's sensing and electronic components. It measures electrocardiogram (ECG), impedance plethysmogram (IPG), photoplethysmogram (PPG), and phonocardiogram (PCG) waveforms, and collectively processes these to determine the vital signs and hemodynamic parameters. The sensor that measures PPG waveforms also includes a heating element to increase perfusion of tissue on the chest.

The invention provides a neck-worn sensor for simultaneously measuring a blood pressure (BP), pulse oximetry (SpO2), and other vital signs and hemodynamic parameters from a patient. The neck-worn sensor features a sensing portion having a flexible housing that is worn entirely on the patient's chest and encloses a battery, wireless transmitter, and all the sensor's sensing and electronic components. It measures electrocardiogram (ECG), impedance plethysmogram (IPG), photoplethysmogram (PPG), and phonocardiogram (PCG) waveforms, and collectively processes these to determine the vital signs and hemodynamic parameters. The sensor that measures PPG waveforms also includes a heating element to increase perfusion of tissue on the chest.

An example system for monitoring and delivering therapy to a patient includes a monitor module with patient monitoring capability, and a manifold that is operable to provide an electrical connection between the monitor module and cables connecting to sensors for collecting physiologic monitoring data of a patient, and to provide a gas connection between the monitor module and tubing for delivering treatment to or collecting additional physiologic monitoring data from the patient. The manifold includes a connector for mechanically connecting the manifold to the monitor module, and the connector also for mechanically disconnecting the manifold from the monitor module while maintaining the cables and the tubing coupled to the patient. In some examples, the system can also include a cot including a second set of monitoring electronics with patient monitoring capability, the cot including a port for coupling with the connector of the manifold.

A cardiac electrotherapy device is described having an electrode lead set (100) and an instruction placard (140) having a set of medical guidance instructions (210) integrated with the electrode lead wire (160). The medical guidance instructions are printed on an elongated readable surface which is attached along its long edge to the electrode lead wire. The invention is particularly useful during cardiac emergencies involving pediatric or infant patients, whose medical dosage limits may be closely correlated with patient length.

The invention provides a neck-worn sensor for simultaneously measuring a blood pressure (BP), pulse oximetry (SpO2), and other vital signs and hemodynamic parameters from a patient. The neck-worn sensor features a sensing portion having a flexible housing that is worn entirely on the patient's chest and encloses a battery, wireless transmitter, and all the sensor's sensing and electronic components. It measures electrocardiogram (ECG), impedance plethysmogram (IPG), photoplethysmogram (PPG), and phonocardiogram (PCG) waveforms, and collectively processes these to determine the vital signs and hemodynamic parameters. The sensor that measures PPG waveforms also includes a heating element to increase perfusion of tissue on the chest.

Disclosed herein are methods, systems, and devices for identifying increased likelihood of non-ST elevation myocardial infarction (NSTEMI) in a patient based on ECG data. The methods can include determining based on the ECG data that the patient lacks ST elevation (STE) and that the patient exhibits a ventricular repolarization dispersion (VRD) score that exceeds a predetermined threshold value. The VRD score can be based in part on a T wave complexity ratio that serves as a temporal marker of VRD for the patient. Other markers of spatial and time qualities of repolarization can also be included in the VRD score. An elevated VRD score in the absence of STE can indicate a likelihood of NSTEMI in the patient and a potential major adverse cardiac event.

An emergency cardiac and electrocardiogram (ECG) electrode placement device is disclosed herein. The emergency cardiac and electrocardiogram (ECG) electrode placement device incorporates electrical conducting materials and elastic material into a pad that is applied to a chest wall of a patient, which places multiple electrodes in the appropriate anatomic locations on the patient to quickly obtain an ECG in a pre-hospital setting.

An example method of analyzing electrocardiogram (ECG) signals includes receiving, at an ECG device, ECG signals from a multi-lead ECG system. The multi-lead ECG system includes multiple electrodes and leads, and each lead of the multi-lead ECG system provides one of the ECG signals and is coupled to more than one of the multiple electrodes, where certain electrodes are coupled to more than one lead. The method also includes detecting artifact in one or more of the ECG signals, classifying the artifact as a type of artifact, determining which leads of the multiple leads contain at least a threshold amount of the type of artifact, for the leads of the multiple leads that contain at least the threshold amount of the type of artifact identifying a common electrode to the leads, and generating a notification by the ECG device indicating that the common electrode is sensing the artifact.