German Phrase
Ich glaub, das ist ein Herzinfarkt.
Meaning
The speaker is expressing a sudden suspicion that the person they are looking at is suffering a heart attack. It conveys urgency and concern, often said in an emergency situation.
When to use
Use this sentence when you think someone is experiencing the symptoms of a heart attack – chest pain, shortness of breath, or collapse – and you need to alert others quickly.
✦Grammar Breakdown
Ichglaub,dasisteinHerzinfarkt.
Colloquial verb form
‘glaub’ is the spoken contraction of ‘glaube’; both are correct, but ‘glaub’ is informal.
Verb‑second (V2) rule
In main clauses the finite verb (ist) occupies the second position; the subject ‘das’ follows.
Predicate nominative
After ‘sein’, the noun stays in the nominative case: ‘ein Herzinfarkt’, not ‘einen Herzinfarkt’.
Comma usage
A comma separates the introductory clause ‘Ich glaub’ from the main clause.
🗨In Conversation
Ich glaub, das ist ein Herzinfarkt.
I think it's a heart attack.
Ruf sofort den Notarzt!
Call the emergency doctor right away!
✕Common Mistakes
Ich glaub, das ist einen Herzinfarkt.
After ‘sein’ the noun stays nominative, not accusative.
Ich glaube, das ist ein Herzinfarkt.
‘glaub’ is acceptable in spoken German; ‘glaube’ is the full form. Using ‘glaub’ in formal writing is a mistake.
Ich glaub, das ist ein Herzinfarktes.
Do not add a genitive ending after ‘sein’; the predicate noun remains in nominative.
↔Alternatives
Ich glaube, das ist ein Herzinfarkt.
I think it's a heart attack.
Meiner Meinung nach ist das ein Herzinfarkt.
In my opinion, this is a heart attack.
Sieht nach einem Herzinfarkt aus.
Looks like a heart attack.
Cultural Tip
In German‑speaking countries the emergency number is 112. When you suspect a heart attack, call 112 immediately, give the exact location, and follow the operator’s instructions. Staying calm and using clear, concise language can save valuable seconds.