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24


No evidence that anesthesiologists enhance care of the parturient [Letter]

Singer, M M
PMID: 3605727
ISSN: 0003-3022
CID: 101606

Postoperative impairment of mucous transport in the lung

Gamsu, G; Singer, M M; Vincent, H H; Berry, S; Nadel, J A
Impairment of mucous transport is considered significant to the postoperative development of atelectasis, but the association has never beed demonstrated in humans. Tantalum powder, which adheres to airway mucus, can be used to study mucociliary transport. The postoperative clearance of insufflated tantalum powder (mean diameter, 2.5 mum) was investigated in 25 patients. Eighteen patients underwent intra-abdominal vascular surgery and 7 undersent lower-extremity orthopedic procedures. At the completion of surgery, tantalum was insufflated into both lungs of each patient to outline a representative sample of airways from the trachea to the small bronchi. Tantalum clearance was evaluated from serial radiographs obtained immediately after insufflation, at approximately 6, 18, 26, and 48 hours later, and thereafter whenever appropriate. In the 7 orthopedic patients, clearance of tantalum was progressive and usually complete within 48 hours. Atelectasis did not occur in this group. In 14 of the 18 patients who had abdominal surgery, mucociliary clearance was markedly abnormal in that tantalum was retained for up to 6 days. Pooling of tantalum-labeled mucus occurred in dependent bronchi in 16 of these 18 patients. Pooling preceded and always accompanied radiographically visible atelectasis. Lobar atelectasis occurred in 6 patients and segmental atelectasis in 8. Tantalum-labeled mucus moved peripherally in atelectatic lobes or segments and was retained in these bronchi until re-expansion took place. Thus, impaired ciliary function and mucous transport are associated with and implicated in postoperative pulmonary atelectasis
PMID: 970743
ISSN: 0003-0805
CID: 101605

Radiographic evaluation of endotracheal tube position

Goodman, L R; Conrardy, P A; Laing, F; Singer, M M
A malpositioned endotracheal tube is a potential hazard to the intubated patient. Ideally, the tube tip should be 5+/-2 cm from the carina when the head and neck are in neutral position. In 92 of 100 patients studied, the carina overlay T5, T6, or T7 on portable radiographs. Therefore, even when the carina is not visible, it can be assumed that a tube tip positioned at the level of T3 or T4 is safe. The degree of neck flexion or extension at the time of radiography may be determined by evaluating the position of the mandible relative to the vertebral bodies
PMID: 183529
ISSN: 0361-803x
CID: 101604

Alteration of endotracheal tube position. Flexion and extension of the neck

Conrardy, P A; Goodman, L R; Lainge, F; Singer, M M
PMID: 1253616
ISSN: 0090-3493
CID: 101603

A breathing circuit for continuous positive airway pressure (CPAP)

Hamilton, F N; Singer, M M
PMID: 4598873
ISSN: 0090-3493
CID: 101602

Definitive management of innominate artery hemorrhage complicating tracheostomy

Utley, J R; Singer, M M; Roe, B B; Fraser, D G; Dedo, H H
PMID: 4552932
ISSN: 0098-7484
CID: 101600

Endocrine emergencies: diagnosis and intensive care

Singer, M M
PMID: 4998699
ISSN: 0025-7125
CID: 101601

Untoward results of gallamine administration during bilateral nephrectomy: treatment with haemodialysis. Case reports

Singer, M M; Dutton, R; Way, W L
PMID: 5575188
ISSN: 0007-0912
CID: 101599

Management of thoracic injuries

Singer, M M; Lee, J
PMID: 5287015
ISSN: 0020-5907
CID: 101598

Oxygen toxicity in man. A prospective study in patients after open-heart surgery

Singer, M M; Wright, F; Stanley, L K; Roe, B B; Hamilton, W K
PMID: 4921728
ISSN: 0028-4793
CID: 101597