heart

Identified biological heart

Record the evidence identifying the referent as a heart and linking it to an organism or specimen.

1. What observations establish that this is a heart rather than a vessel, tissue fragment or artificial pump? definition
2. Which organism or donor, species and developmental stage does this heart belong to, and how was that association established? provenance

Cardiac flow path

Record observed chambers, partitions, valves where present, and inflow and outflow connections.

1. Which pumping compartments and connections are present, and what evidence establishes their arrangement? measurement
2. Where does this model's heart boundary end at vessels, surrounding tissues and attached devices? boundary
3. Which observed structures reflect developmental anatomy, variation, disease or previous reconstruction? provenance

Observed activation pattern

Record rate and rhythm with the signal source, interpretation and uncertainty.

1. What rate, regularity and conduction pattern were observed, using which signals and observation interval? measurement
2. What evidence distinguishes spontaneous activation, paced activation and recording artefact? provenance

Activation-contraction relationship

Record whether observed activation corresponds to coordinated chamber or regional contraction.

1. Which regions or compartments contract, and how does their timing relate to recorded activation? measurement
2. What evidence shows that observed contractions produce ejection rather than motion alone? measurement

Intracardiac flow conditions

Record filling, pressure differences and evidence of restricted or abnormal flow.

1. What filling volumes, pressures or flow observations are available, and at which locations and cardiac phases? measurement
2. Is there evidence of obstruction, reverse flow or an abnormal connection, and where is it located? measurement

Contextual pumping performance

Record output and its interpretation under specified physiological or experimental conditions.

1. What forward output was measured or estimated, by what method and with what uncertainty? measurement
2. Which activity, loading, temperature and support conditions accompanied the observation? provenance
3. What evidence belongs to the heart assessment, and what additional organism-level evidence is needed to judge whether output is adequate? boundary

Tissue supply evidence

Record evidence about myocardial blood supply and suspected regional deficits.

1. How is myocardial tissue supplied in this organism, and which supplying structures have been identified? definition
2. What observations support adequate or impaired tissue perfusion, and which regions and times do they cover? measurement

Regional tissue condition

Separate observed tissue changes from inferred causes and reversibility.

1. What evidence identifies injury, scarring, inflammation or altered myocardial thickness, and where? measurement
2. Which claims about cause, timing and reversibility are established, and which remain unresolved? provenance

Cardiac state trajectory

Record comparable observations across interventions, support changes and changes of physical situation.

1. What sequence of observations establishes improvement, deterioration or stability, and are their measurement conditions comparable? measurement
2. Which operations, transplant events, pacing changes or support changes preceded the observed state? provenance

Action readiness

Record whether a proposed heart-directed action is supported by the available evidence and applicable care or research protocol.

1. For the proposed imaging, sampling, pacing, support or preservation action, what prerequisites, contraindications and qualified authorisation apply? action
2. Which cardiac observations must be monitored, and what protocol-defined findings require stopping or escalation? action
3. Which decisions require assessment of the whole organism or a linked device beyond this heart model? boundary

Kinds and varieties

Reported by the breadth pass; each item needs checking against its source before it becomes normative.

1. Which of these kinds and varieties hold for the sense of heart this model covers, and on what evidence? provenance

Identifiers and schemes

Reported by the breadth pass; each item needs checking against its source before it becomes normative.

1. Which of these identifiers and schemes hold for the sense of heart this model covers, and on what evidence? provenance

Standards and regulation

Reported by the breadth pass; each item needs checking against its source before it becomes normative.

1. Which of these standards and regulation hold for the sense of heart this model covers, and on what evidence? provenance

Real-world use

Reported by the breadth pass; each item needs checking against its source before it becomes normative.

1. Which of these real-world use hold for the sense of heart this model covers, and on what evidence? provenance

Typical measurements

Reported by the breadth pass; each item needs checking against its source before it becomes normative.

1. Which of these typical measurements hold for the sense of heart this model covers, and on what evidence? provenance

Failure modes and hazards

Reported by the breadth pass; each item needs checking against its source before it becomes normative.

1. Which of these failure modes and hazards hold for the sense of heart this model covers, and on what evidence? provenance

Regional variation

Reported by the breadth pass; each item needs checking against its source before it becomes normative.

1. Which of these regional variation hold for the sense of heart this model covers, and on what evidence? provenance

Neighbouring kinds and how to tell them apart

Reported by the breadth pass; each item needs checking against its source before it becomes normative.

1. Which of these neighbouring kinds and how to tell them apart hold for the sense of heart this model covers, and on what evidence? provenance