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Draft a comprehensive differential diagnosis for acute substernal chest pain in a 45-year-old male with hypertension and hyperlipidemia, diaphoresis, exertional onset, and normal initial ECG/troponin; include life-threatening causes first, key distinguishing features, and immediate diagnostic next steps.

Draft a detailed differential diagnosis for new-onset unilateral throbbing headache with visual aura and brief monocular vision loss in a 32-year-old female on oral contraceptives; include red-flag symptoms, stroke/TIA considerations, and recommended initial workup.

Draft an assessment and plan for stage-2 hypertension (BP 162/98) in an obese 52-year-old with suspected obstructive sleep apnea; include ASCVD risk estimate, lifestyle prescriptions, first-line pharmacotherapy with drug/dose/targets, baseline labs/monitoring, and 4–6 week follow-up.

Draft an assessment and plan for type 2 diabetes follow-up with A1c 9.2% on metformin 1,000 mg BID and eGFR 65; compare adding a GLP-1 receptor agonist vs an SGLT2 inhibitor, address weight loss goals, hypoglycemia education, vaccinations, and micro/macrovascular screening.

Draft a history and physical for a patient presenting with chest pain, including HPI using OLDCARTS, pertinent ROS, PMH/meds/allergies, FH/SH, focused cardiac/pulmonary exam, initial labs and imaging orders, prioritized differential, HEART score risk stratification, and early management.

Draft a history and physical for a new patient with progressive exertional dyspnea, orthopnea, and bilateral leg edema; include differential (heart failure, COPD, PE, anemia, renal disease), targeted exam maneuvers, and first-line diagnostics and management.

Draft a progress note for COPD follow-up two weeks after an acute exacerbation treated with prednisone and antibiotics; include symptom trajectory, CAT score (if available), inhaler technique/adherence, oxygen needs, spirometry plan, smoking cessation counseling, and return precautions.

Draft a progress note for post-operative day 2 after total knee arthroplasty; include pain control strategy, DVT prophylaxis, PT/OT milestones, wound status, bowel/urinary function, labs/vitals review, complications screening, and discharge readiness.

Draft a discharge summary for community-acquired pneumonia admission; include admission/discharge dates, presenting symptoms, radiology/labs, pathogen if identified, inpatient therapies and response, discharge medications with durations, pending tests, follow-up appointments, and return precautions.

Draft a discharge summary for myocardial infarction managed with PCI and drug-eluting stent placement; include cath findings, complications, inpatient course, discharge medications (DAPT, statin, beta-blocker, ACEi/ARB), cardiac rehab referral, and follow-up plan.

Draft discharge instructions for a patient hospitalized with acute decompensated heart failure; include daily weights, sodium and fluid restriction amounts, medication list with dosing, signs of worsening heart failure, follow-up appointments, and lab monitoring plan.

Draft discharge instructions for an asthma exacerbation; include controller and reliever regimen, steroid taper schedule, spacer technique, trigger avoidance, a written asthma action plan, return precautions, and follow-up timing.

Draft a patient handout on managing high blood pressure in plain language; explain what BP numbers mean, key lifestyle steps (DASH diet, sodium limits, alcohol moderation), home BP monitoring instructions, medication adherence tips, and when to call the doctor.

Draft a patient handout for type 2 diabetes education in plain language; cover A1c goals, the plate method, physical activity targets, self-monitoring of blood glucose, hypoglycemia signs and the 15-15 rule, foot care basics, and a vaccination checklist.

Draft a summary of the latest CDC and WHO guidelines for managing community-acquired pneumonia in adults, including empiric antibiotic choices, duration of therapy, and follow-up recommendations.

Draft a plain-language overview of the ADA and AACE guidelines for diabetes management, focusing on A1c goals, weight management, and the use of GLP-1 receptor agonists and SGLT2 inhibitors.

Draft a summary of the 2024 USPSTF breast cancer screening recommendations, including updated screening intervals, risk-based approaches, and the role of MRI for high-risk patients.

Draft a concise summary of NCCN guidelines for melanoma management, including staging, surgical margins, adjuvant therapy, and checkpoint inhibitor recommendations.

Draft treatment alternatives for community-acquired MRSA skin infections in patients allergic to sulfa drugs; include oral and IV options, dosing, and duration.

Draft treatment alternatives for patients with type 2 diabetes who are unable to tolerate GLP-1 receptor agonists due to nausea; include medication substitutions and lifestyle recommendations.

Draft a summary of options for treating refractory depression, comparing ketamine infusions, transcranial magnetic stimulation (TMS), and electroconvulsive therapy (ECT).

Draft treatment options for advanced prostate cancer, including hormonal therapy, radiopharmaceuticals, and novel androgen receptor pathway inhibitors.

Draft a summary of recent research on mRNA vaccine technology beyond COVID-19, including applications in oncology and autoimmune disease prevention.

Draft an easy-to-understand overview of long COVID research, summarizing major symptoms, hypothesized mechanisms, and emerging treatment approaches.

Draft a summary of current research on Alzheimer’s disease biomarkers, including amyloid and tau imaging, and discuss how they influence diagnosis and trial design.

Draft an explanation of the interaction between warfarin and antibiotics such as ciprofloxacin or TMP-SMX, including INR effects and management recommendations.

Draft a summary evaluating drug interactions for patients taking Paxlovid and common cardiovascular drugs; include mechanism and recommended dose adjustments.

Draft a summary of the common and serious side effects of semaglutide, including GI intolerance, gallbladder disease, and thyroid-related warnings.

Draft an overview of potential side effects associated with long-term corticosteroid use, including osteoporosis, glucose intolerance, and adrenal suppression.

Draft a summary of essential lab tests to order in suspected acute pancreatitis, including amylase, lipase, liver enzymes, and metabolic panels, with interpretation guidance.

Draft laboratory workup recommendations for suspected hypothyroidism, including TSH, free T4, thyroid antibodies, and when to consider secondary causes.

Draft an explanation of which labs should be monitored in patients receiving methotrexate therapy, including CBC, LFTs, renal function, and frequency of monitoring.

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Research Article: Establishment of a CT-based prediction model for endotracheal tube size in infants aged <1 year

Date Published: 2026-06-18

Abstract:
By quantifying airway parameters on computed tomography (CT) and incorporating clinical factors such as age and prematurity, this study developed an airway prediction model for infants to provide more accurate guidance for endotracheal tube size selection and insertion depth in patients under one year of age. A retrospective analysis of data on infants under one year of age who underwent preoperative anesthesia evaluation at Peking University People's Hospital from January 2020 to December 2022. Inclusion criteria: All enrolled infants underwent chest CT examination, with the scanning range covering the level of the cricoid cartilage. The development of cricoid cartilage was associated with laryngeal cartilage maturity. Its size and ossification degree change with age, sex, height and other factors. Therefore, we collected clinical data including the age, sex, gestational age, preterm birth, height and weight at birth and visit which may affect the shortest diameter of the cricoid cartilage in children. Infants with congenital laryngeal malformations, acquired nutritional deficiencies, hormonal abnormalities such as hypothyroidism, neck tumors and a history of maternal smoking during pregnancy were excluded. Accurately measure the shortest inner diameter of the cricoid cartilage and the distance from the cricoid cartilage to the carina on CT images. SPSS 24.0 software was used for simple and multiple linear regression analysis to screen key factors. Corresponding prediction models were established for the shortest cricoid cartilage diameter and the cricoid-to-carina distance, so as to facilitate the individualized selection of tracheal tube sizes and insertion depths in clinical practice. In this study, age and preterm birth were identified as independent influencing factors for the shortest cricoid cartilage diameter in infants [ P =?0.008, 0.005(95% CI: 0.001 to 0.008); P =?0.022, ?1.261 (95% CI: ?2.321 to ?0.201)]. The established prediction formulas were as follows: the shortest diameter of the cricoid cartilage in full-term infants (mm)?=?6.119?+?0.005?×?age; The shortest diameter of the cricoid cartilage in preterm infants (mm)?=?6.119?+?0.005?×?age-1.261. For the distance from the cricoid cartilage to the carina, age was the only significant influencing factor [ P =?0.003, 35.725(95% CI: 0.016 to 0.073)], and carina formula was derived as follows: distance from the cricoid cartilage to the carina (mm)?=?35.725?+?0.044?×?age. Age and preterm status were independently associated with the shortest cricoid cartilage diameter in infants under one year of age, suggesting that preterm infants may require smaller endotracheal tubes than full-term infants of the same age. Age was also associated with the cricoid-to-carina distance. These CT-based findings may support more individualized airway management in infants. However, despite internal bootstrap validation, the model remains limited by the lack of external validation, small sample size, and highly specific ophthalmologic surgical population; therefore, broader validation is required before clinical generalization.

Introduction:
Infants present unique challenges for airway management because their airway anatomy differs from that of older children and adults. The infant airway is funnel-shaped, with the narrowest point located at the level of the cricoid cartilage rather than the glottis ( 1 ). In addition, the airway mucosa is fragile and highly vascular, and the laryngeal cartilage is relatively soft ( 2 ). As a result, inappropriate endotracheal tube selection may easily lead to complications. An oversized tube may cause mucosal…

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