atrial standstill
Findings
No curated finding names atrial standstill yet. Everything below is reference data from Mondo, HPO and GenCC, not evidence about what affects it.
Definition
Atrial standstill is a rare cardiac rhythm disease with a few familial and sporadic cases described to date that is characterized by a transient or permanent absence of electrical and mechanical atrial activity. Electrocardiographic findings include bradycardia, ectopic supraventricular rhythms, lack of atrial excitability and absent P waves.
Definition from the Mondo Disease Ontology (MONDO:0015281), read 2026-09-29. CC BY 4.0.
Features
32 features
What the disease is reported to present with, and how often among people who have it — never how often a feature means the disease. HPO, annotations 2026-09-02.
- Abnormal P waveHPOHP:0031595
- Very frequent (80% to 99% of cases)
- Atrial standstillHPOHP:0025478
- Very frequent (80% to 99% of cases)
- Cardiac conduction abnormalityHPOHP:0031546
- Very frequent (80% to 99% of cases)
- PalpitationsHPOHP:0001962
- Very frequent (80% to 99% of cases)
- Ventricular escape rhythmHPOHP:0005155
- Very frequent (80% to 99% of cases)
- Abnormal heart morphologyHPOHP:0001627
- Frequent (30% to 79% of cases)
- ArrhythmiaHPOHP:0011675
- Frequent (30% to 79% of cases)
- Complete right bundle branch blockHPOHP:0011712
- Frequent (30% to 79% of cases)
- DyspneaHPOHP:0002094
- Frequent (30% to 79% of cases)
- FatigueHPOHP:0012378
- Frequent (30% to 79% of cases)
- Increased circulating troponin T concentrationHPOHP:0410174
- Frequent (30% to 79% of cases)
- Left ventricular noncompactionHPOHP:0030682
- Frequent (30% to 79% of cases)
Show the remaining 20
- Muscular dystrophyHPOHP:0003560
- Frequent (30% to 79% of cases)
- Postexertional symptom exacerbationHPOHP:0030973
- Frequent (30% to 79% of cases)
- Reduced left ventricular ejection fractionHPOHP:0012664
- Frequent (30% to 79% of cases)
- Sick sinus syndromeHPOHP:0011704
- Frequent (30% to 79% of cases)
- AphasiaHPOHP:0002381
- Occasional (5% to 29% of cases)
- BradycardiaHPOHP:0001662
- Occasional (5% to 29% of cases)
Genes
2 genes
Germline variants in the gene encoding each protein, as classified by GenCC submitters, each in their own words. Limited, disputed and refuted submissions are listed too.
Where it sits
- A kind of
- Narrower terms (2)
Other names
1 name
Resolves to: atrial standstill
- Also called
- atrial cardiomyopathy with heart block