Category: Toxicology
Keywords: Edibles, Marijuana, Cannabis (PubMed Search)
Posted: 4/1/2026 by Kathy Prybys, MD
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Edibles refers to food or drink products infused with cannabis extracts. Cannabis contains numerous biologically active substances most notably delta-9-tetrahydrocannabinol (THC) which mediate most of the psychoactive effects by CB1 receptor agonism.
Edible products include candy (gummies, hard candies, lollipops), baked goods (cookies, brownies), infused beverages, cooking oils and butters, and lozenges. Edibles are often packaged in multiple dose containers and may contain large doses of THC (up to 500 mg). A single unit typical dose is 5 mg with 1-5 mg considered microdoses and doses > 100 mg being considered very high dose for an adult.
Onset of peak effects are 30 mins- 2 hours (up to 8 hours) because of gastrointestinal aborption of orally consumed cannabis. This range of timing may lead to overdose as individuals ingest more edibles (redosing) assuming they are not being affected.
Children >6 year of age are at special risk for edible marijuana toxicity. Most pediatric exposures (97.7%) occur in a residential setting. Weight-based dose is a substantial predictor of severe toxicity and duration of symptoms: ranging from somnolence, lethargy, nausea, and vomiting to more severe effects of respiratory depression and failure, altered mental status, seizures, and unresponsiveness. Studies report a 70% incidence of central nervous system depression with 22.7% admitted to the hospital. Symptoms typically presented 2- 4 hours after ingestion. Patients with severe toxicity experienced symptoms for 6 hours and greater. A few deaths have been reported.
Unintentional marijuana ingestion should be considered in the differential diagnosis of patients < 6 years of age who present with acute onset of somnolence, altered mental status,or lethargy.
Packaging of Cannabis Edibles, Health Warning Recall, and Perceptions Among Young Adults. Cooper M, Shi Y. JAMA Netw Open. 2025;8(4):e253117. doi:10.1001/jamanetworkopen.2025.3117
Tweet MS, Nemanich A, Wahl M. Pediatric Edible Cannabis Exposures and Acute Toxicity: 2017-2021. Pediatrics. 2023 Feb 1;151(2):e2022057761. doi: 10.1542/peds.2022-057761. PMID: 36594224.
Packaging Regulations Needed to Mitigate THC Ingestions in Children. Zwiebel H, Goldman RD, Greenky D. JAMA Health Forum. 2025;6(7):e252628. doi:10.1001/jamahealthforum.2025.2628
The evolving landscape of cannabis edibles, Blake A, Nahtigal I. Current Opinion in Food Science, Volume 28, 2019, Pages 25-31, ISSN 2214-7993, https://doi.org/10.1016/j.cofs.2019.03.009.
Category: Critical Care
Posted: 3/30/2026 by Jessica Downing, MD
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The 2026 Acute Pulmonary Embolism Guidelines recommend a new approach to risk stratification of patients with acute PE, including measurement of at least one cardiac biomarker and serum lactate, evaluation of RV size and function with CTA or echo (preferred when feasible), and multidisciplinary PERT assessment for all patients with acute PE and elevated clinical severity scores to assist with further risk stratification.

Initial management strategies are based on these risk classifications. Inclusion of assessment of clot burden into risk stratification and management decisions is not recommended.
From a critical care perspective, we are most interested in patients in Classes C, D, and E.
Initial Management:
This infographic from the new guidelines summarizes treatment recommendations. Note that institution and system-specific guidelines and PERT approaches may not yet have shifted to use these criteria.

Creager MA, Barnes GD, Giri J, Mukherjee D, Jones WS, Burnett AE, Carman T, Casanegra AI, Castellucci LA, Clark SM, Cushman M, de Wit K, Eaves JM, Fang MC, Goldberg JB, Henkin S, Johnston-Cox H, Kadavath S, Kadian-Dodov D, Keeling WB, Klein AJP, Li J, McDaniel MC, Moores LK, Piazza G, Prenger KS, Pugliese SC, Ranade M, Rosovsky RP, Russo F, Secemsky EA, Sista AK, Tefera L, Weinberg I, Westafer LM, Young MN. 2026 AHA/ACC/ACCP/ACEP/CHEST/SCAI/SHM/SIR/SVM/SVN Guideline for the Evaluation and Management of Acute Pulmonary Embolism in Adults: A Report of the American College of Cardiology/American Heart Association Joint Committee on Clinical Practice Guidelines. J Am Coll Cardiol. 2026 Feb 19:S0735-1097(25)10161-7. doi: 10.1016/j.jacc.2025.11.005. Epub ahead of print. PMID: 41712898.
Category: Critical Care
Keywords: immersion, SIPE, swimmer, swimming (PubMed Search)
Posted: 3/30/2026 by TJ Gregory, MD
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Bottom Line: Swimming-Induced Pulmonary Edema (SIPE) AKA Immersion Pulmonary Edema is a rare, though life-threatening pathology associated with water-based activities, especially among athletes or military personnel. Caused by physiologic effects of immersion, not from aspiration/ingestion. Consider in any patient with respiratory distress or chest discomfort onset during water activities such as swimming, diving, etc. Diagnose with physical exam and POCUS. Manage supportively, potentially including positive pressure ventilation. Screen for alternative diagnoses.
See the link for more thorough review of assessment diagnostics, pathophysiology, pharmacological options, risk factors, and long-term considerations.
https://doi.org/10.1177/10806032251414379
Steins H. Swimming-Induced Pulmonary Edema: A Scoping Review and Analysis of Epidemiology, Pathophysiology, Diagnostics, Management, and Implications for Resource-Limited Care of Patients. Wilderness & Environmental Medicine. 2026;0(0). doi:10.1177/10806032251414379
Category: Trauma
Keywords: Shock, bradycardia, Hemoperitoneum, hypotension, (PubMed Search)
Posted: 3/29/2026 by Robert Flint, MD
(Updated: 4/1/2026)
Click here to contact Robert Flint, MD
Bradycardia accompanying hypotension can be found in spinal cord injury (loss of autonomic reflex), beta blocker and calcium channel blocker overdose, intrinsic cardiac electrophysiologic derangement, and, often forgotten, intrabdominal hemorrhage. In the appropriate setting (blunt trauma, ruptured ectopic pregnancy), bradycardic hypotensive patients should be considered the same as tachycardic hypotensive patients and get a work up and treatment focused on Hemoperitoneum.
Category: Orthopedics
Posted: 3/28/2026 by Brian Corwell, MD
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https://prod-images-static.radiopaedia.org/images/52314030/8089eeb717fd6d20e108ec2e586ba4.jpg
Hamate Fractures:
Rare (2 to 4% of all carpal fractures)
Mechanism: Usually a direct blow from a stick sport (bat, club or racket)
Have increased suspicion in these athletes who present w/ ulnar sided wrist pain
Presents with hypothenar pain and pain with gripping activities
Fractures occur in two locations: the body and the hook of the hamate
On exam you will find:
Hook of Hamate Pull Test
Examiner places the wrist in full ulnar deviation with the fingers flexed.
Examiner pulls on the ring and pinky finger with the patient resisting the pull.
Positive test
Diagnosis:
Category: Geriatrics
Posted: 3/26/2026 by Robert Flint, MD
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Using a database of 300,000 patients and applying a predictive measure for mortality, these authors found that patients over 66 with a high likelihood of 6 month mortality at the time of presentation were more likely to be admitted to an ICU when they presented to an ED. The authors conclude there is much work to be done regarding discussion of goals of care based on this information.
Adeyemi O, Hill J, Siman N, Goldfeld KS, Cuthel AM, Grudzen CR. Acute Care Use and Prognosis in Older Adults Presenting to the Emergency Department. J Pain Symptom Manage. 2025;69(6):559-568. doi:10.1016/j.jpainsymman.2025.01.006
Category: Administration
Keywords: safety net, uncompensated care, administration (PubMed Search)
Posted: 3/25/2026 by Mercedes Torres, MD
(Updated: 4/1/2026)
Click here to contact Mercedes Torres, MD
Bottom Line: Safety-net hospitals are those that see a substantial share of uninsured, Medicaid, or low-income Medicare patients. Their emergency departments (EDs) deliver disproportionally more undercompensated and uncompensated care, yet have similar operating costs as other EDs. Authors convened a group of 15 administrators of academic safety net EDs to identify and
develop a consensus understanding of barriers to delivering optimal care. See the link for details of their conclusions.
The 5 major calls to action specific to safety-net EDs identified by the group of content area experts
were as follows:
(1) a need for financially aligned incentives
(2) a need for timely access to outpatient primary and behavioral care
(3) a need to optimize our health care system’s in patient and post–acute care capacity
(4) a need to ensure appropriate workforce staffing and workplace safety
(5) a need to uniquely support vulnerable patients impacted by the social drivers of health.
Table 1 below shows potential solutions identified to address these concerns.

Yun BJ, Singh MK, Reznek MA, et al. Strengthening essential emergency departments: Transforming the safety net. Health Affairs Scholar, 2025, 3(3), doi.org/10.1093/haschl/qxaf044.
Category: Critical Care
Keywords: Sepsis, Septic Shock, SSC, Surviving Sepsis Campaign (PubMed Search)
Posted: 3/23/2026 by Kami Windsor, MD
(Updated: 3/24/2026)
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Click the link for below to read the bulleted, abridged version of the Executive Summary of the Updated SSC Guidelines for Adults with Sepsis and Septic Shock 2026…
New Statements for 2026:
Changes in Suggestion/Recommendations from 2021:
Changes in Strength of Recommendation or Evidence Certainty since 2021:
Upgrades
Downgrades
Otherwise the same:
Prescott HC, Antonelli M, Alhazzani W, et al. Executive Summary: Surviving Sepsis Campaign: International Guidelines for Management of Sepsis and Septic Shock 2026. Crit Care Med. 2026 Mar 23. doi: 10.1097/CCM.0000000000007089. Epub ahead of print.
Category: Infectious Disease
Keywords: STI, empiric treatment, sex disparity (PubMed Search)
Posted: 3/20/2026 by Lena Carleton, MD
(Updated: 3/23/2026)
Click here to contact Lena Carleton, MD
Bottom Line: Among adult ED patients tested for gonorrhea and chlamydia, empiric treatment often does not align with confirmed infection. There are also notable sex disparities; in this study, females with confirmed infection were ~3.5 times more likely than males to not receive empiric treatment.
Empiric treatment for gonorrhea (GC) and chlamydia trachomatis (CT) is common in the emergency department due to delayed test results. This systematic review and meta-analysis evaluated how well empiric treatment aligns with laboratory-confirmed infections, with a focus on overtreatment, undertreatment, and sex differences.
The authors included U.S.-based ED studies published between January 2010 and January 2025 (excluding pediatric EDs). Nineteen studies with 32,593 patients met the inclusion criteria. Although GC and CT were initially analyzed separately, they were combined due to inconsistent reporting.
Overall, 14% of tested patients had confirmed GC/CT (11% of females vs. 25% of males). Empiric treatment was given to 46% of patients, less often in females (31%) than in males (73%). Among patients with confirmed infection, 39% were not empirically treated, with a markedly higher rate in females (52%) compared to males (15%), suggesting females were ~3.5 times more likely to be undertreated.
Potential explanations include higher rates of symptomatic disease in males and broader testing in females with abdominal or pelvic complaints, which lowers test positivity rates. Bias, implicit or explicit, may also contribute.
Overall, there is significant discordance between empiric treatment and confirmed infection, with notable sex disparities. At the bedside, shared decision-making around empiric treatment is essential. At a systems level, EDs should ensure reliable follow-up processes to notify and treat patients who test positive after discharge.
Solnick RE, Patel R, Chang E, et al. Sex disparities in chlamydia and gonorrhea treatment in U.S. adult emergency departments: A systematic review and meta-analysis. Acad Emerg Med. 2025; 32: 1003-1016. doi:10.1111/acem.70070
Category: Trauma
Keywords: Whole blood, trauma center level (PubMed Search)
Posted: 3/22/2026 by Robert Flint, MD
(Updated: 4/1/2026)
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Looking at a national database, this study concluded the use of low titer O whole blood during trauma resuscitations was increasing at level one centers but not at level 2 and 3 centers. Is this a representation of the national blood supply as whole blood is harder to stock? We need to understand this trend to assure equal and appropriate care to trauma patients across the country.
LETTER TO THE EDITOR
Steven G. Schauer, Mark H. Yazer
First published: 01 February 2026
Category: Administration
Keywords: Ramadan, Muslim, diabetes (PubMed Search)
Posted: 3/21/2026 by Hanna Hussein, MD
(Updated: 4/1/2026)
Click here to contact Hanna Hussein, MD
Educational Pearls for the ED:
Many Muslim patients with diabetes will fast despite medical advice. Studies show a significant number continue fasting even when they are considered high risk.
Key medical risks during Ramadan fasting include:
- Hypoglycemia
- Hyperglycemia and diabetic ketoacidosis
- Dehydration
- Medication nonadherence or altered dosing schedules
This article discusses the ethical and clinical challenges that arise when Muslim patients with diabetes choose to fast during Ramadan. During this month, fasting from dawn to sunset involves abstaining from food, drink, and oral medications, which can complicate chronic disease management and increase risks such as hypoglycemia, hyperglycemia, dehydration, and medication nonadherence. Despite these risks, many patients still opt to fast due to strong religious and cultural motivations. The authors highlight gaps in physician–patient communication, including limited counseling on medication adjustments and risk stratification before Ramadan, as well as physicians’ lack of familiarity with the religious significance of fasting. Ethically, this situation reflects the balance between patient autonomy and physician beneficence. Rather than simply telling patients not to fast, the authors recommend culturally sensitive counseling, shared decision-making, and proactive pre-Ramadan planning to promote safer fasting practices while respecting patients’ beliefs.
Islam provides exemptions from fasting for illness, including diabetes in many cases. However, patients may still choose to fast for personal or cultural reasons. Avoid framing the discussion as “you cannot fast.” A shared decision-making approach that recognizes the religious importance of fasting is generally more effective. Pre-Ramadan counseling is essential. Ideally, patients should be seen before Ramadan to discuss risk stratification, medication adjustments, hydration strategies, and when to break the fast. In the ED, consider fasting status when evaluating diabetic patients presenting with hypoglycemia, hyperglycemia, or dehydration during Ramadan. Cultural competence is important. Even a brief acknowledgment of Ramadan’s significance can help build trust and improve adherence to medical recommendations.
Ethical conflicts in the treatment of fasting Muslim patients with diabetes during Ramadan
Ilhan Ilkilic · Hakan Ertin
Med Health Care and Philos (2017) 20:561–570
DOI 10.1007/s11019-017-9777-y
Category: Pediatrics
Keywords: Complications, intubation, pediatric (PubMed Search)
Posted: 3/19/2026 by Jenny Guyther, MD
(Updated: 3/20/2026)
Click here to contact Jenny Guyther, MD
This was review of 24 studies across 21 years that aimed to look at the complications associated with pediatric intubation in the hospital. The article also includes a list of all the articles with brief conclusions from each study for those interested.
Among a combined 7135 patients, there was an 84.7% overall success rate with a 30.1% rate of complication. There was a 69.8% first pass success rate. Desaturations < 90% was the most common complication followed by mainstem intubation. Studies also noted cardiac arrhythmia (55/3858 patients), hypotension (121/4536 patients) and cardiac arrest in 105/4836 patients). Other adverse events included esophageal intubation, surgical airway management and airway trauma.
Indications for intubation from most to least common are: neurologic, respiratory, trauma, cardiac arrest, sepsis, shock, cardiac failure and intoxication.
Alsabri M, Kamal I, Al-Tawil M, Bahbah EI, Elshanbary AA, Zaazouee MS, Zamarud A, Binsaeedu AS, Shahbaz MU, Chhetri J. Adverse events in pediatric orotracheal intubation in the pediatric emergency department: systematic review and meta-analysis. Pediatr Res. 2025 Jun 20. doi: 10.1038/s41390-025-04142-6. Epub ahead of print. PMID: 40542093.
Category: EMS
Keywords: IV, IO, epi, arrest, delivery (PubMed Search)
Posted: 3/18/2026 by Jenny Guyther, MD
(Updated: 4/1/2026)
Click here to contact Jenny Guyther, MD
The debate of the best way to administer epinephrine in cardiac arrest continues. Pediatric arrests are different from adults in many ways, but some differences in arrest include 1) data supporting improved survival with early epinephrine administration and 2) less IVs are placed in children overall compared to adults making IO placement possibly quicker.
In this study, 739 patients were included with a median age of 1 year. The IO was used in 72% of patients and an IV was used in 27.6% of patients. There was no difference between survival to hospital discharge or prehospital ROSC between the two groups.
Okubo M, Komukai S, Izawa J, Chung S, Dezfulian C, Guyette FX, Lupton JR, Martin-Gill C, Owusu-Ansah S, Ramgopal S, Callaway CW. Intraosseous vs Intravenous Access for Epinephrine in Pediatric Out-of-Hospital Cardiac Arrest. JAMA Netw Open. 2025 Jun 2;8(6):e2517291. doi: 10.1001/jamanetworkopen.2025.17291. PMID: 40560587; PMCID: PMC12199053.
Category: Critical Care
Keywords: landiolol, esmolol, mortality, sepsis, tachycardia (PubMed Search)
Posted: 3/17/2026 by Quincy Tran, MD, PhD
(Updated: 4/1/2026)
Click here to contact Quincy Tran, MD, PhD
Beta-blocker is used for tachycardia among patients with sepsis. Landiolol, a new beta-blocker with highly selective B1-agonist (ratio of B1:B2 250:1) has recently been approved for use. In a network meta-analysis comparing landiolol with esmolol (B1:B2 ratio 30:1), landiolol was associated with increased 28-day mortality (relative risk [RR], 1.57; 95% CI, 1.08–2.30). This result carried low certainty as there were not as many studies using landiolol and there was no direct comparison between landiolol versus esmolol.
Similarly, landiolol was associated with higher norepinephrine requirements (mean difference [MD], 0.17 ?g/kg/min; 95% CI, 0.02–0.32). Again, there was no direct head-to-head comparison between landiolol versus esmolol.
Tang Z, Sun Q, Xu J, Yang Y, Peng F. Comparison of Esmolol Versus Landiolol on Mortality in Adult Patients With Sepsis: A Systematic Review and Network Meta-Analysis. Crit Care Med. 2026 Feb 1;54(2):324-334. doi: 10.1097/CCM.0000000000006966. Epub 2025 Nov 25. PMID: 41363997; PMCID: PMC12955956.
Category: Trauma
Keywords: Trauma, geriatric, undertriage (PubMed Search)
Posted: 3/15/2026 by Robert Flint, MD
(Updated: 4/1/2026)
Click here to contact Robert Flint, MD
Another study, this one from New Zealand, showing older trauma patients with similar injury severity score had less trauma team activations and higher mortality.
M.Nonis, A.McCombie, C.Wakeman, J.Geddes, and L. R.Joyce, “The Effect of Increasing Age on Outcomes in Major Trauma: A Retrospective Cohort Study,” Emergency Medicine Australasia38, no. 1 (2026): e70226, https://doi.org/10.1111/1742-6723.70226.
Category: Orthopedics
Posted: 3/14/2026 by Brian Corwell, MD
Click here to contact Brian Corwell, MD
https://upload.orthobullets.com/topic/322147/images/dorsal_cortical_lateral_pooping_duck..jpg
Triquetrum fracture
The commonly missed ulnar wrist injury
2nd most common carpal bone fracture (15-18 % of all fractures)
Tender just distal to the ulna
X-ray findings are subtle and frequently missed
In one series, only 20% were visualized on plain film!
When seen, most often on the lateral view
Seen as a chip fracture of unclear donor site
Also, one of my favorite named radiologic findings!
https://pbs.twimg.com/media/FskPCbnWYBEk8H2.jpg
Nonsurgical management is indicated for most triquetral fractures.
Volar splint and follow up with hand surgery.
Category: Pediatrics
Keywords: pediatrics, neonate, cord clamping, cord milking, preterm neonates (PubMed Search)
Posted: 3/13/2026 by Kathleen Stephanos, MD
Click here to contact Kathleen Stephanos, MD
BOTTOM LINE: You are probably doing fine in your ED already, just delay cord clamping 60 seconds when possible.
The latest guidelines for neonatal resuscitation recommend a 60 second delay minimum in clamping the cord for neonates of all gestational ages who are stable.
In those OVER 28 weeks for whom clamping cannot be delayed (due to maternal or neonatal factors), cord milking can be performed.
DO NOT milk the cord in neonates under 28 weeks as this can increase the risk of intraventricular hemorrhage.
Cord milking is performed by gently massaging the cord blood starting about 20cm away from the infant and moving toward the infant's body 3-4 times before clamping. This essentially allows for a transfusion before clamping occurs, increasing LV preload and allowing for improved oxygenation.
Fortunately, in most EDs, the time to obtain the equipment for cord clamping likely takes more than 1 minute, so chances are in your practice you don't have to worry too much about this. But if you happen to have everything prepared, wait 60 seconds before clamping.
Lee HC, Strand ML, Finan E, Illuzzi J, Kamath-Rayne BD, Kapadia V, Mahgoub M, Niermeyer S, Schexnayder SM, Schmölzer GM, Weglarz J, Williams AL, Weiner GM, Wyckoff M, Yamada NK, Szyld E. Part 5: Neonatal Resuscitation: 2025 American Heart Association and American Academy of Pediatrics Guidelines for Cardiopulmonary Resuscitation and Emergency Cardiovascular Care. Pediatrics. 2026 Jan 1;157(1):e2025074352. doi: 10.1542/peds.2025-074352. PMID: 41122855.
Category: Pharmacology & Therapeutics
Keywords: Pulmonary embolism, heparin, low-molecular-weight heparin, LMWH (PubMed Search)
Posted: 3/12/2026 by Ashley Martinelli
(Updated: 4/1/2026)
Click here to contact Ashley Martinelli
The 2026 Acute Pulmonary Embolism Guidelines were recently released. They recommend low-molecular-weight heparin (LMWH) over heparin for hospitalized patients with acute PE who require initial parenteral therapy unless they are in Category E2 Acute PE Cardiopulmonary Failure (level 1B-R).
Top benefits include:
Category: Gastrointestional
Keywords: upper GI bleeding, antibiotics (PubMed Search)
Posted: 3/11/2026 by Neeraja Murali, DO, MPH
Click here to contact Neeraja Murali, DO, MPH
JAMA Internal Medicine recently published a systematic review and Bayesian meta-analysis looking at the utility of prophylactic antibiotics in cirrhotics with acute upper GI bleeding
TLDR: shorter durations of antibiotics (including no antibiotics!) had a 97.3% probability of noninferiority for all-cause mortality
This meta-analysis and systematic review explored the practice of giving prophylactic antibiotics to patients with cirrhosis and upper GI bleeding, which is strongly recommended in the current guidelines.
14 RCTs were included in the analysis, with 1322 patients. Authors compared 1) any prophylaxis vs none; and 2) 5-7 duration vs 2-3 duration of third generation cephalosporins.
-Shorter durations (including 0 days) had a 97.3% probability of noninferiority for all-cause mortality (RD 0.9%, 95%CrI -2.6 to 4.9). -
Secondary outcomes:
-Shorter durations had a 73.8% probability (RD 2.9%, 95%CrI -4.2 to 10) of noninferiority for early rebleeding (with substantial heterogenetity and low certainty of evidence)
-Shorter durations (especially 0 days) were associated with more study-defined infections (RD 15.2%, 95%CrI 5.0 to 25.9), probability not given.
Conclusions:
The authors argue that existing evidency does not support a mortality benefit from 5-7 days of antibiotic prophylaxis, and they further point out that the current guidelines are not based on high-quality evidence. They suggest that shorter or no prophylaxis may be reasonable, but admit that high-quality, large, double-blinded RCTs could help support this conclusion.
Fun Fact:
Annals also did a systematic review snapshot of this article: Arbab Z, Long B, Gottlieb M. Do Prophylactic Antibiotics Improve Outcomes in Patients With Cirrhosis and Upper Gastrointestinal Bleeding?. Ann Emerg Med. Published online December 9, 2025. doi:10.1016/j.annemergmed.2025.10.019
Prosty C, Noutsios D, Dubé LR, et al. Prophylactic Antibiotics for Upper Gastrointestinal Bleeding in Patients With Cirrhosis: A Systematic Review and Bayesian Meta-Analysis. JAMA Intern Med. 2025;185(10):1194-1203. doi:10.1001/jamainternmed.2025.3832
Arbab Z, Long B, Gottlieb M. Do Prophylactic Antibiotics Improve Outcomes in Patients With Cirrhosis and Upper Gastrointestinal Bleeding?. Ann Emerg Med. Published online December 9, 2025. doi:10.1016/j.annemergmed.2025.10.019
Category: Obstetrics & Gynecology
Posted: 3/4/2026 by Jennifer Wang, MD
(Updated: 3/9/2026)
Click here to contact Jennifer Wang, MD
Bottom Line: We are terrible at estimating how much blood people are losing just by looking at it. Use calibrated drapes (drapes with markings that tell you how much blood is being lost), or just a large bag and then weigh it afterwards (1g ~ 1ml of blood loss).
In 2025, Yunas et. al did a systematic review to look at how we evaluate blood loss in the postpartum period, defining postpartum hemorrhage (PPH) as >500ml and severe postpartum hemorrhage as >1000ml.
What they found was that visual estimation or relying on the provider's eyes was only 50% sensitive in identifying PPH and only 10% sensitive in identifying severe PPH, which means that we miss up to 90% of severe PPH when we just look at the blood.
Well, what do we do about that?
Per FIGO recommendations and the Yunas et. al study, gravimetric methods (or measuring everything that was soaked in blood and subtracting out the dry weight) are the most accurate, but they're very time-intensive, so an easier method is volumetric (having the patient bleed into a bag or bucket that has lines telling you how much volume of blood has been lost), especially calibrated drapes (pictured below). These are drapes designed for this purpose that can be placed under the patient. These are fairly cheap and should be in every ED as preparation for a precipitous delivery and potential PPH.
If your hospital doesn't have them and is unwilling to get them, you could use other large bags, such as trash bags, large patient belonging bags and weight these afterwards, subtracting the dry weight of the bag (1g ~ 1ml of blood).
Regardless of what you choose to do - DO NOT RELY ON YOUR EYES. THEY ARE NOT DEPENDABLE.

Begum F, Nieto-Calvache AJ, Schlembach D, et al. FIGO recommendations on objective measurement of blood loss after birth for early detection of postpartum hemorrhage. Int J Gynaecol Obstet. 2025;171(3):933-950. doi:10.1002/ijgo.70523
Yunas I, Gallos ID, Devall AJ, Podesek M, Allotey J, Takwoingi Y, Coomarasamy A. Tests for diagnosis of postpartum haemorrhage at vaginal birth. Cochrane Database Syst Rev. 2025 Jan 17;1(1):CD016134. doi: 10.1002/14651858.CD016134. PMID: 39821088; PMCID: PMC11740288.