Document And Entity Information |
Aug. 13, 2025 |
|---|---|
| Document Information [Line Items] | |
| Document Type | 8-K/A |
| Amendment Flag | true |
| Document Period End Date | Aug. 13, 2025 |
| Entity Registrant Name | SeaStar Medical Holding Corporation |
| Entity Central Index Key | 0001831868 |
| Entity Emerging Growth Company | true |
| Entity File Number | 001-39927 |
| Entity Incorporation, State or Country Code | DE |
| Entity Tax Identification Number | 85-3681132 |
| Entity Address, Address Line One | 3513 Brighton Blvd, |
| Entity Address, Address Line Two | Suite 410 |
| Entity Address, City or Town | Denver |
| Entity Address, State or Province | CO |
| Entity Address, Postal Zip Code | 80216 |
| City Area Code | 844 |
| Local Phone Number | 427-8100 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Ex Transition Period | false |
| Amendment Description | This Amendment No. 1 to Form 8-K (this "Amendment") amends Form 8-K of SeaStar Medical Holding Corporation (the "Company") that was originally filed with the Securities and Exchange Commission on August 13, 2025, (the "Original Filing"). This Amendment is being filed solely to correct an inadvertent error in the submission of the Original Filing through EDGAR which referenced the incorrect Form 8-K Item Number (Item 2.01) in the EDGAR submission header. This Amendment is being filed through EDGAR to reference the correct Form 8-K Item Numbers (Items 2.02 and 9.01) in the EDGAR submission header. There are no changes to the Original Filing itself (which referenced the correct Item numbers). Except as summarized above, this Amendment continues to speak as of the date of the Original Filing and does not reflect events occurring after the date of the Original Filing or modify or update the disclosures therein in any way. |
| Common Stock [Member] | |
| Document Information [Line Items] | |
| Title of 12(b) Security | Common Stock par value $0.0001 per share |
| Trading Symbol | ICU |
| Security Exchange Name | NASDAQ |
| Warrant [Member] | |
| Document Information [Line Items] | |
| Title of 12(b) Security | Warrants, each whole warrant exercisable for one share of Common Stock for $11.50 per share |
| Trading Symbol | ICUCW |
| Security Exchange Name | NASDAQ |