Which of the following is true regarding vomiting? A. It can lead to dehydration
B. It is rarely a sign of serious illness
C. Vomiting blood often indicates a serious illness
D. Both A&C

A32-year-old woman presents for a routine gynecological exam. she has been married for 5 years and plans to start a family with her husband in the near future. her first menstrual period was at the age of 11. she is in a 28/4 cycle with no irregularities or discomfort. at age 18, she had an induced abortion and has used oral contraceptives since then. in the recto-vaginal exam, you palpate a mass on the left side. an ultrasound confirms a complex cystic tumor 6cm in diameter on the left ovary. there is no free fluid in the pelvis. there is no family history of any malignant tumors. what is your therapeutic approach?

A41-year-old man comes to the clinic complaining of a chronic cough over the past 4 months, which has now been accompanied by haemoptysis. he denies smoking or any past medical history. on physical examination, his head and neck examination is normal. his lungs have diffuse bilateral rales. cardiac examination is normal. laboratory findings reveal na 142 meq/l, k 4.2 meq/l, cl 110 meq/l, hco3 24 meq/l, bun (blood urea nitrogen) 39 mg/dl, creatinine 2.9 mg/dl. urinalysis reveals microscopic haematuria and 4+ proteinuria. which of the following serologic blood tests would most confirm the suspected diagnosis? - anti-glomerular basement membrane antibodies- anti-mitochondrial antibodies- anti-neutrophilic antibodies- anti-parietal cell antibodies- anti-smooth muscle antibodies

The physician ordered velosef (cephradine) im 50 mg/kg/day in equally divided doses four times a day for a child who weighs 40 pounds. convert pounds to kilograms and then calculate the prescribed dosage. mg every hours