Hypoxemia during and after Anesthesia

Marshall, Bryan E.; Wyche, Melville Q.

doi:10.1097/00000542-197208000-00009

Cited by 260 publications

(75 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Hypoxaemia in the immediate postoperative period is a common sequel to general anaesthesia. 16 A number of recent studies using pulse oximetry has demonstrated significant oxygen desaturation during transport of the patient from the OR to the PACU and in the immediate postoperative period. 4-7 In a study of 95 adult patients, Tyler et al showed that the incidence of postoperative hypoxaemia (SaO2 < 90 per cent) was 35 per cent and the incidence of severe hypoxaemia (SaO2 < 85 per cent) was 12 per cent.S Using Tyler's definitions of hypoxaemia and severe hypoxaemia the overall incidence rates in our study were 22 and seven per cent respectively.…”

Section: Discussionmentioning

confidence: 99%

“…Non-ventilated or collapsed alveoli distal to the closed airways result in an increase in venous admixture and an increase in the alveolar component of the physiologic shunt. 16 Patients who smoke tobacco or who have COPD or who are obese may have closing capacities during anaesthesia which approach or exceed FRC, resulting in ventilation/perfusion mismatching, an increase in the alveolar-arterial oxygen difference and hypoxaemia. 22 '23 These changes in pulmonary mechanics continue into the postoperative period 16'24 and may explain the greater degree of hypoxaemia observed in the cigarette smokers compared with non-smokers.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Changes in arterial oxygen saturation in cigarette smokers following general anaesthesia

et al. 1990

View full text Add to dashboard Cite

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Changes in arterial oxygen saturation in cigarette smokers following general anaesthesia

et al. 1990

View full text Add to dashboard Cite

“…Alveolar arterial oxygen pressure gradient (P (A-a) O2) was calculated using a standard formula. 13 The age-adjusted predicted values of PaO2 were calculated according to the formula of Marshall et al 13,14 (mean PaO2 =102-0.33 (age of years) mmHg). Percentages of the predicted values of PaO2 were calculated.…”

mentioning

confidence: 99%

Differences in Clinical Presentation of Pulmonary Embolism in Older vs Younger Patients

Köktürk

Oğuzülgen

Demir

et al. 2005

Circ J

View full text Add to dashboard Cite

ulmonary embolism (PE) is a major health problem associated with a significant morbidity and mortality particularly in older patients. The overall annual incidence is approximately more than 1 case per 1,000 person-years, 1 but this increases markedly with advancing age. [1][2][3][4] The incidence is distributed extremely unevenly over the ages: 1 case per 1,000,000 person-years for children aged less than 15 years, 72.4 cases per 100,000 person-years for adults aged 40-54 years and 2.8 cases per 1,000 personyears for those aged 85-89 years. 2,3,5 Autopsy series have shown that PE is responsible for, or at least accompanies, approximately 12% of inhospital deaths and this rate increases to 20% for the patients aged 70 years and over. 6,7 Kniffin et al reported a 1-year mortality for PE of 39% in patients older than 65 years, 3 and Sakuma et al reported that the relative risk of mortality from PE was 417.76 for the patients aged over 79 years. 8 The high incidence of PE requires physicians to maintain a high level of suspicion in order to make a prompt diagnosis and initiate appropriate treatment, which is even more important for elderly patients who have higher mortality rates. On the other hand, physicians have to deal with the challenge of diagnosing suspected PE in elderly because older patients with PE may present with atypical clinical features in the absence of the usual indices. However, the clinical presentation of PE in the elderly population has not been extensively investigated. In the present study, the Circulation Journal Vol.69, August 2005hospital records of patients with documented PE were analyzed according to age, and risk factors, presenting symptoms and signs, arterial blood gas (ABG) analysis, electrocardiographic (ECG) and echocardiographic (ECHO) findings and, pulmonary vascular obstruction scores (PVOs) as a marker of severity of the disease, were compared for a better definition of the disease characteristics in the older population. Methods Study Population and DesignThe study was carried out at Gazi University, a large teaching hospital in Ankara. Hospital records between 1998 to 2003 from the Chest Department's database were used to identify patients who had received a final diagnosis of PE, which was established according to the protocol previously published by Prospective Investigation of Pulmonary Embolism Diagnosis investigators. 9 Patients diagnosed with pneumonia were not included in the study.Patients who met the entry criteria were stratified into 2 groups as older (≥65 years old) or younger (<65 years old) patients. The risk factors for PE were defined as follows: 10,11 immobilization (at least 2 days' bed rest in the 2 weeks prior to admission), pregnancy (includes postpartum period within the 3 months prior to admission), estrogen or oral contraceptive use, stroke, obesity (body mass index >27 kg/m 2 ), trauma (within past 3 months), recent operation (within past 6 weeks), malignancy, recent history of long travel (>6 h within 1 week), chronic obstructive lung disease (COPD...

show abstract

“…[3][4][5][6] Special procedures are followed for the securing of endotracheai tubes, to minimize the chance of unintentional extubation. Normally, a minimum of 5 cm H20 PEEP is maintained in all intubated patients.…”

Section: Respiratory Protocolsmentioning

confidence: 99%

The recovery room in the 1980’s

Landow

1986

Can Anaesth Soc J

View full text Add to dashboard Cite

Hypoxemia during and after Anesthesia

Cited by 260 publications

References 0 publications

Changes in arterial oxygen saturation in cigarette smokers following general anaesthesia

Changes in arterial oxygen saturation in cigarette smokers following general anaesthesia

Differences in Clinical Presentation of Pulmonary Embolism in Older vs Younger Patients

The recovery room in the 1980’s

Contact Info

Product

Resources

About