LMWHs have additional advantage over unfractionated heparin: no volume load.
Koracevic
Goran P
GP
D000925:Anticoagulants / Q000008:administration & dosage / Q000009:adverse effects / Q000493:pharmacokinetics*; D006493:Heparin / Q000008:administration & dosage / Q000009:adverse effects / Q000493:pharmacokinetics*; D006495:Heparin, Low-Molecular-Weight / Q000008:administration & dosage / Q000009:adverse effects / Q000493:pharmacokinetics; D006801:Humans
D000925:Anticoagulants; D006495:Heparin, Low-Molecular-Weight; D006493:Heparin