ClinicalTrials.gg

Heart Arrest clinical trials

The registry lists 926 studies for Heart Arrest across more than 10 countries. 226 are recruiting or about to start. 625 of them are mainly about Heart Arrest (how this is decided). Per ClinicalTrials.gov, last updated 2026-11-10. Counting its 2 narrower conditions too, such as Death, Sudden, Cardiac: 1,412 studies, 343 open.

ClinicalTrials.gov finds 1,622 studies for Heart Arrest. How that becomes 926 here

This page counts the studies the registry files under Heart Arrest, and those it files under no condition that list Heart Arrestthemselves. Each study its search finds is placed by how the registry filed it and by the conditions it lists. ClinicalTrials.gov counts as of Nov 8, 2026. How condition pages count

  1. 1,622Found by its condition searchIt reads the conditions a study lists and their synonyms, and also titles and keywords.
  2. −486Filed under a narrower condition, counted on its own pageDeath, Sudden, Cardiac 305 · Out-of-Hospital Cardiac Arrest 181
  3. −22List Heart Arrest as a condition, but the registry did not file them under itMost often written as “Cardiac Arrest With Successful Resuscitation” (6), “In-Hospital Cardiac Arrest” (3), and “Post-Cardiac Arrest Syndrome” (2). The registry filed them under other conditions only, most often Post-Cardiac Arrest Syndrome (4) and Sepsis (3).
  4. −189Match it another way34 name it in the title, 4 in a keyword, and 151 by a synonym or other text the search reads.
  5. 925Counted here and found by its search23 of them list Heart Arrest in their own words; the registry filed them under no condition.
  6. +1
    Counted here, but its search does not find them
  7. 926The count on this page

Get an email when these change. Save the Heart Arrest studies recruiting or about to start — once a week, free: studies that open, close, add sites or post results.

Watch these studies
See an example email

Example · made-up studies

Breast cancer · Recruiting: 2 came in, 3 changed

What changed in your saved searches, Oct 31 – Nov 6:

A study of drug A after surgery for early breast cancer

Came in · now Recruiting

Drug B with hormone therapy in advanced breast cancer

Changed

· Sites: 4 added, including Seoul and Busan

· Enrollment: 300 → 450 participants

Exercise during chemotherapy

Now Active, not recruiting

One email a week for all your saved searches. Stop any time.

Status

Completed
458
Recruiting
157
Status unknown
134
Not yet recruiting
56
Terminated
40
Active, not recruiting
39

Phase

Phase 2
56
Phase 3
44
Phase 4
34
Phase 1
24
Early Phase 1
6

Where

United States
171
France
106
Canada
65
Italy
46
United Kingdom
40
Germany
38

What is being tested here

Drugs under test in Heart Arrest studies, those with the most open studies first. Medicines only given beside them are not counted. How drugs are counted

Drug classes tested here Bronchodilators 2 open · Corticosteroids 5 · Beta blockers 3

Coming up

75studies finish main data collection within a year2 of them phase 3

Studies recruiting or running, from their records. “Main data collection” ends at the primary completion date, the sponsor’s own estimate, which often moves.

The 10 nearest, phase 3 first

Who these studies take

Of the 157 Heart Arrest studies recruiting now, 109 (69%) set no upper age limit and 28 (18%) stop at 75 or younger. 30 (19%) take children under 18. 0 (0%) are for women only and 0 (0%) for men only; 18 (11%) take healthy volunteers.

Recruiting studies that take each age, of 157
AgeWomenMen
1025 (16%)25 (16%)
18148 (94%)148 (94%)
30147 (94%)147 (94%)
40147 (94%)147 (94%)
50147 (94%)147 (94%)
65142 (90%)142 (90%)
75135 (86%)135 (86%)
85118 (75%)118 (75%)

Across all 926 studies, recruiting or not: 17% stop at 75 or younger and 12% at 65; 19% take children; <1% are for women only and 1% for men only; 20% take healthy volunteers. From each study’s registry entry; the criteria on its page decide.

How long Heart Arrest studies take

Of 218 interventional studies with no phase under Heart Arrest, half reached primary completion within 28 months of starting, counting those still running.

Start to primary completionEvery sponsorIndustryNon-industry
Interventional, no phase28 mo10–47 · 218 studies—29 mo10–47 · 204 studies
Observational41 mo18–90 · 176 studies—39 mo19–90 · 169 studies

Each figure is the month by which half the studies had reached primary completion, with the range in which the middle half did. Studies still running count until their last registry update; studies that stopped early are left out. Phase 1 includes early phase 1; observational means prospective or not stated, as retrospective and cross-sectional studies date a window of data rather than a study. How these figures are worked out

What changed recently

From the registry's own updates since Oct 13, 2026.

Studies

Recruiting first, then most recently updated. Showing 50 of 926. Browse all 926 → or search them.